VERIFICATION TO WMO STANDARDS ---------------------------------------- JAPAN METEOROLOGICAL AGENCY APRIL 2015 ----------------------------------------------- GLOBAL SPECTRAL MODEL (TL959,L100) ---------------------------------------- TABLE 1.1 NORTHERN HEMISPHERE VERIFICATION AGAINST ANALYSIS (20-90N) ---------------------------------------------------------- MEAN SEA LEVEL PRESSURE APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE ANOM. CORR. SKILL SCORE PERIOD (hPa) (hPa) -------------- -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ ------ ------ 24 -0.02 -0.03 0.89 0.88 0.99 0.99 16.6 17.4 48 -0.07 -0.09 1.52 1.48 0.98 0.98 25.3 26.2 72 -0.10 -0.11 2.28 2.25 0.96 0.96 33.4 34.7 96 -0.14 3.23 0.92 43.8 120 -0.13 4.28 0.86 52.1 144 -0.10 5.40 0.78 59.6 168 -0.12 6.48 0.69 66.3 192 -0.10 7.54 0.58 72.6 216 -0.11 8.18 0.50 76.6 240 -0.13 8.86 0.42 78.8 264 -0.21 9.48 0.34 81.3 TABLE 1.2 NORTHERN HEMISPHERE VERIFICATION AGAINST ANALYSIS (20-90N) ---------------------------------------------------------- 500 HPA GEOPOTENTIAL HEIGHT APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE ANOM. CORR. SKILL SCORE PERIOD (m) (m) -------------- -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ ------ ------ 24 -0.19 -0.43 6.62 6.48 1.00 1.00 10.0 10.0 48 0.09 -0.24 13.75 13.34 0.99 0.99 18.4 18.2 72 0.46 0.18 22.65 22.18 0.97 0.97 26.9 26.9 96 0.49 33.45 0.94 35.4 120 0.86 46.02 0.88 43.6 144 1.27 58.88 0.80 50.8 168 1.44 72.01 0.71 57.4 192 1.80 84.61 0.60 63.1 216 1.94 93.22 0.52 67.0 240 1.74 100.86 0.43 69.8 264 1.13 107.86 0.35 71.8 TABLE 1.3 NORTHERN HEMISPHERE VERIFICATION AGAINST ANALYSIS (20-90N) ---------------------------------------------------------- 250 HPA GEOPOTENTIAL HEIGHT APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE ANOM. CORR. SKILL SCORE PERIOD (m) (m) -------------- -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ ------ ------ 24 -0.68 -0.84 8.90 8.79 1.00 1.00 8.4 8.4 48 -1.32 -1.65 17.92 17.50 0.99 0.99 14.6 14.5 72 -1.90 -2.11 28.47 28.52 0.98 0.98 21.1 21.1 96 -2.63 41.92 0.95 28.0 120 -2.74 58.60 0.89 35.5 144 -2.53 76.31 0.82 42.3 168 -1.71 93.70 0.73 48.5 192 -0.96 113.00 0.61 54.8 216 -0.47 125.86 0.52 58.9 240 -0.43 135.27 0.43 61.7 264 -0.27 143.84 0.36 63.6 TABLE 1.4 NORTHERN HEMISPHERE VERIFICATION AGAINST ANALYSIS (20-90N) ---------------------------------------------------------- 500 HPA TEMPERATURE APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE ANOM. CORR. PERIOD (K) (K) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 0.01 0.01 0.47 0.47 0.99 0.99 48 0.00 0.00 0.88 0.86 0.98 0.98 72 -0.02 -0.01 1.31 1.31 0.95 0.95 96 -0.03 1.77 0.90 120 -0.04 2.33 0.83 144 -0.04 2.85 0.74 168 -0.04 3.32 0.65 192 -0.04 3.82 0.53 216 -0.02 4.15 0.45 240 -0.02 4.38 0.38 264 0.00 4.55 0.32 TABLE 1.5 NORTHERN HEMISPHERE VERIFICATION AGAINST ANALYSIS (20-90N) ---------------------------------------------------------- 250 HPA TEMPERATURE APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE ANOM. CORR. PERIOD (K) (K) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -0.04 -0.03 0.63 0.62 0.99 0.99 48 -0.10 -0.09 1.06 1.05 0.96 0.96 72 -0.14 -0.14 1.53 1.50 0.92 0.93 96 -0.18 2.01 0.87 120 -0.22 2.51 0.79 144 -0.22 2.96 0.71 168 -0.18 3.35 0.62 192 -0.14 3.66 0.55 216 -0.10 3.94 0.48 240 -0.11 4.15 0.43 264 -0.09 4.29 0.39 TABLE 1.6 NORTHERN HEMISPHERE VERIFICATION AGAINST ANALYSIS (20-90N) ---------------------------------------------------------- 500 HPA WIND APRIL 2015 ------------------------------------------------ FORECAST MEAN SPEED ERROR RMSEV PERIOD (m/s) (m/s) -------- 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ 24 -0.08 -0.07 2.14 2.14 48 -0.18 -0.17 3.90 3.86 72 -0.26 -0.26 5.69 5.66 96 -0.33 7.58 120 -0.35 9.42 144 -0.34 11.15 168 -0.27 12.82 192 -0.22 14.34 216 -0.17 15.41 240 -0.07 16.13 264 -0.04 16.75 TABLE 1.7 NORTHERN HEMISPHERE VERIFICATION AGAINST ANALYSIS (20-90N) ---------------------------------------------------------- 250 HPA WIND APRIL 2015 ------------------------------------------------ FORECAST MEAN SPEED ERROR RMSEV PERIOD (m/s) (m/s) -------- 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ 24 -0.09 -0.10 3.30 3.23 48 -0.19 -0.19 5.44 5.30 72 -0.25 -0.26 7.52 7.56 96 -0.32 9.99 120 -0.37 12.58 144 -0.39 15.01 168 -0.36 17.33 192 -0.32 19.90 216 -0.25 21.70 240 -0.20 22.89 264 -0.11 23.80 TABLE 2.1 TROPICS VERIFICATION AGAINST ANALYSIS (20N-20S) ---------------------------------------------------------- 850 HPA GEOPOTENTIAL HEIGHT APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE ANOM. CORR. SKILL SCORE PERIOD (m) (m) -------------- -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ ------ ------ 24 -0.33 -0.25 3.29 3.08 0.97 0.98 28.4 27.3 48 -0.48 -0.37 4.86 4.52 0.94 0.95 37.2 35.3 72 -0.58 -0.44 5.75 5.45 0.92 0.93 42.1 40.3 96 -0.71 6.07 0.92 43.5 120 -1.21 6.80 0.90 46.2 144 -1.89 7.73 0.88 48.4 168 -2.32 8.89 0.85 51.0 192 -2.30 9.89 0.82 53.5 216 -1.99 10.77 0.79 55.3 240 -1.43 11.54 0.76 57.2 264 -0.84 12.15 0.74 58.3 TABLE 2.2 TROPICS VERIFICATION AGAINST ANALYSIS (20N-20S) ---------------------------------------------------------- 250 HPA GEOPOTENTIAL HEIGHT APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE ANOM. CORR. SKILL SCORE PERIOD (m) (m) -------------- -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ ------ ------ 24 0.74 0.64 4.53 4.34 0.98 0.98 20.3 20.5 48 -0.46 -0.58 6.94 6.87 0.95 0.95 28.3 28.5 72 -1.31 -1.46 9.02 9.10 0.92 0.91 33.7 34.0 96 -2.28 10.85 0.88 38.3 120 -2.85 12.78 0.83 42.2 144 -3.45 14.62 0.77 45.9 168 -3.76 16.20 0.72 49.0 192 -3.74 18.06 0.66 52.1 216 -3.42 19.72 0.59 54.8 240 -2.71 21.38 0.53 57.6 264 -2.00 22.84 0.46 60.1 TABLE 2.3 TROPICS VERIFICATION AGAINST ANALYSIS (20N-20S) ---------------------------------------------------------- 850 HPA TEMPERATURE APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE ANOM. CORR. PERIOD (K) (K) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -0.02 -0.02 0.40 0.41 0.96 0.97 48 0.02 0.00 0.68 0.66 0.89 0.91 72 0.02 0.00 0.82 0.81 0.84 0.87 96 0.01 0.90 0.83 120 0.04 0.99 0.80 144 0.07 1.07 0.77 168 0.09 1.17 0.72 192 0.10 1.27 0.67 216 0.12 1.35 0.62 240 0.16 1.44 0.57 264 0.19 1.55 0.52 TABLE 2.4 TROPICS VERIFICATION AGAINST ANALYSIS (20N-20S) ---------------------------------------------------------- 250 HPA TEMPERATURE APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE ANOM. CORR. PERIOD (K) (K) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 0.04 0.03 0.38 0.36 0.91 0.92 48 0.01 -0.01 0.54 0.52 0.81 0.82 72 -0.01 -0.03 0.65 0.63 0.74 0.74 96 -0.06 0.70 0.68 120 -0.08 0.75 0.64 144 -0.08 0.80 0.60 168 -0.07 0.84 0.56 192 -0.05 0.89 0.52 216 -0.05 0.94 0.48 240 -0.04 0.98 0.44 264 -0.04 1.01 0.41 TABLE 2.5 TROPICS VERIFICATION AGAINST ANALYSIS (20N-20S) ---------------------------------------------------------- 850 HPA WIND APRIL 2015 ------------------------------------------------ FORECAST MEAN SPEED ERROR RMSEV PERIOD (m/s) (m/s) -------- 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ 24 -0.15 -0.15 1.41 1.39 48 -0.27 -0.27 2.07 2.04 72 -0.35 -0.36 2.53 2.53 96 -0.39 2.90 120 -0.37 3.20 144 -0.33 3.46 168 -0.28 3.73 192 -0.26 4.02 216 -0.24 4.23 240 -0.25 4.44 264 -0.25 4.62 TABLE 2.6 TROPICS VERIFICATION AGAINST ANALYSIS (20N-20S) ---------------------------------------------------------- 250 HPA WIND APRIL 2015 ------------------------------------------------ FORECAST MEAN SPEED ERROR RMSEV PERIOD (m/s) (m/s) -------- 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ 24 -0.40 -0.42 2.96 2.94 48 -0.77 -0.78 4.40 4.39 72 -1.02 -1.03 5.43 5.43 96 -1.21 6.29 120 -1.31 7.07 144 -1.36 7.75 168 -1.38 8.43 192 -1.35 9.07 216 -1.32 9.59 240 -1.30 10.17 264 -1.34 10.83 TABLE 3.1 SOUTHERN HEMISPHERE VERIFICATION AGAINST ANALYSIS (20-90S) ---------------------------------------------------------- MEAN SEA LEVEL PRESSURE APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE ANOM. CORR. SKILL SCORE PERIOD (hPa) (hPa) -------------- -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ ------ ------ 24 0.03 0.04 0.91 0.91 1.00 1.00 12.0 12.0 48 0.04 0.05 1.86 1.82 0.98 0.98 21.7 21.4 72 0.05 0.05 2.95 3.00 0.95 0.95 30.6 30.4 96 0.08 4.32 0.89 39.1 120 0.13 5.61 0.82 46.3 144 0.20 6.88 0.72 52.7 168 0.26 8.07 0.62 58.4 192 0.28 9.05 0.53 62.0 216 0.29 9.69 0.47 63.7 240 0.26 10.39 0.41 66.1 264 0.25 10.76 0.38 67.0 TABLE 3.2 SOUTHERN HEMISPHERE VERIFICATION AGAINST ANALYSIS (20-90S) ---------------------------------------------------------- 500 HPA GEOPOTENTIAL HEIGHT APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE ANOM. CORR. SKILL SCORE PERIOD (m) (m) -------------- -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ ------ ------ 24 0.75 0.77 7.88 7.80 1.00 1.00 9.6 9.6 48 0.96 1.01 16.74 16.67 0.99 0.99 17.9 17.8 72 1.09 1.08 28.26 28.57 0.96 0.96 26.2 26.2 96 1.24 42.62 0.91 34.4 120 1.60 56.19 0.84 41.4 144 2.08 70.46 0.75 48.0 168 2.60 84.87 0.64 53.6 192 2.60 97.63 0.53 58.2 216 2.63 106.44 0.45 61.2 240 2.68 114.99 0.37 63.9 264 3.30 120.48 0.32 65.4 TABLE 3.3 SOUTHERN HEMISPHERE VERIFICATION AGAINST ANALYSIS (20-90S) ---------------------------------------------------------- 250 HPA GEOPOTENTIAL HEIGHT APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE ANOM. CORR. SKILL SCORE PERIOD (m) (m) -------------- -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ ------ ------ 24 0.43 0.45 10.16 9.93 1.00 1.00 8.0 7.9 48 -0.08 -0.07 20.89 20.72 0.99 0.99 14.4 14.3 72 -0.75 -0.73 35.28 35.46 0.97 0.96 21.4 21.2 96 -1.33 54.19 0.92 28.8 120 -1.39 72.38 0.85 35.4 144 -1.08 92.11 0.76 41.7 168 -0.59 112.78 0.65 47.7 192 0.15 130.38 0.54 52.6 216 1.28 143.81 0.45 55.7 240 2.15 154.59 0.38 58.4 264 3.37 160.63 0.33 59.8 TABLE 3.4 SOUTHERN HEMISPHERE VERIFICATION AGAINST ANALYSIS (20-90S) ---------------------------------------------------------- 500 HPA TEMPERATURE APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE ANOM. CORR. PERIOD (K) (K) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 0.00 0.00 0.49 0.49 0.99 0.99 48 -0.03 -0.02 0.94 0.94 0.97 0.97 72 -0.04 -0.04 1.45 1.45 0.92 0.92 96 -0.07 2.01 0.85 120 -0.08 2.50 0.76 144 -0.08 2.98 0.67 168 -0.09 3.47 0.56 192 -0.09 3.94 0.44 216 -0.07 4.24 0.36 240 -0.06 4.46 0.29 264 -0.02 4.57 0.25 TABLE 3.5 SOUTHERN HEMISPHERE VERIFICATION AGAINST ANALYSIS (20-90S) ---------------------------------------------------------- 250 HPA TEMPERATURE APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE ANOM. CORR. PERIOD (K) (K) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -0.01 -0.02 0.61 0.61 0.98 0.98 48 -0.05 -0.06 1.12 1.12 0.95 0.95 72 -0.09 -0.10 1.66 1.66 0.88 0.88 96 -0.11 2.23 0.78 120 -0.13 2.68 0.68 144 -0.14 3.08 0.58 168 -0.11 3.46 0.46 192 -0.05 3.82 0.35 216 0.02 4.04 0.29 240 0.05 4.23 0.22 264 0.05 4.37 0.17 TABLE 3.6 SOUTHERN HEMISPHERE VERIFICATION AGAINST ANALYSIS (20-90S) ---------------------------------------------------------- 500 HPA WIND APRIL 2015 ------------------------------------------------ FORECAST MEAN SPEED ERROR RMSEV PERIOD (m/s) (m/s) -------- 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ 24 -0.07 -0.08 2.23 2.24 48 -0.16 -0.15 4.23 4.23 72 -0.24 -0.24 6.26 6.28 96 -0.28 8.36 120 -0.29 10.17 144 -0.31 11.95 168 -0.31 13.56 192 -0.28 14.84 216 -0.22 15.75 240 -0.21 16.62 264 -0.17 17.17 TABLE 3.7 SOUTHERN HEMISPHERE VERIFICATION AGAINST ANALYSIS (20-90S) ---------------------------------------------------------- 250 HPA WIND APRIL 2015 ------------------------------------------------ FORECAST MEAN SPEED ERROR RMSEV PERIOD (m/s) (m/s) -------- 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ 24 -0.15 -0.13 3.14 3.13 48 -0.28 -0.28 5.61 5.59 72 -0.42 -0.41 8.30 8.27 96 -0.43 11.30 120 -0.46 14.09 144 -0.50 16.89 168 -0.46 19.58 192 -0.41 21.75 216 -0.37 23.16 240 -0.38 24.57 264 -0.35 25.47 TABLE 4.1 NORTH AMERICA VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 850 HPA GEOPOTENTIAL HEIGHT APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (m) (m) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -2.04 -2.37 8.48 8.31 0.98 0.98 48 -2.66 -2.69 11.85 12.54 0.98 0.98 72 -1.26 -2.12 16.71 17.02 0.96 0.96 96 -1.07 22.99 0.94 120 -0.45 30.15 0.91 144 -2.31 39.73 0.85 168 -4.21 50.90 0.72 192 -4.41 61.15 0.62 216 -3.17 61.01 0.68 240 -1.47 62.51 0.67 264 -0.20 66.43 0.63 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 82 12 UTC = 85 --------------------------------------------------------- TABLE 4.2 NORTH AMERICA VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 500 HPA GEOPOTENTIAL HEIGHT APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (m) (m) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -7.26 -8.23 12.53 12.85 0.99 0.99 48 -8.17 -8.78 17.47 17.95 0.99 0.99 72 -6.82 -8.14 23.70 23.86 0.98 0.97 96 -5.75 33.06 0.95 120 -5.52 44.60 0.93 144 -8.27 57.94 0.89 168 -8.41 73.42 0.82 192 -8.12 91.63 0.71 216 -5.31 96.63 0.72 240 -4.39 99.54 0.71 264 -3.53 103.06 0.70 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 88 12 UTC = 91 --------------------------------------------------------- TABLE 4.3 NORTH AMERICA VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 250 HPA GEOPOTENTIAL HEIGHT APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (m) (m) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -8.51 -9.41 16.35 16.30 0.99 0.99 48 -10.64 -11.18 23.64 23.89 0.99 0.99 72 -11.43 -12.72 32.83 33.01 0.98 0.98 96 -11.00 43.49 0.96 120 -11.73 58.97 0.93 144 -14.57 77.56 0.88 168 -13.85 98.64 0.83 192 -12.65 125.84 0.75 216 -9.07 139.89 0.72 240 -7.61 142.58 0.70 264 -7.54 148.81 0.67 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 88 12 UTC = 91 --------------------------------------------------------- TABLE 4.4 NORTH AMERICA VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 850 HPA TEMPERATURE APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (K) (K) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -0.67 -0.72 1.67 1.86 0.92 0.93 48 -0.60 -0.64 1.83 2.02 0.94 0.94 72 -0.47 -0.54 2.04 2.25 0.93 0.93 96 -0.36 2.62 0.92 120 -0.33 3.09 0.90 144 -0.38 3.68 0.86 168 -0.27 4.44 0.78 192 -0.31 5.18 0.72 216 -0.20 5.66 0.69 240 -0.15 5.97 0.66 264 -0.44 5.96 0.66 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 81 12 UTC = 84 --------------------------------------------------------- TABLE 4.5 NORTH AMERICA VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 500 HPA TEMPERATURE APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (K) (K) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -0.02 -0.11 0.94 0.95 0.95 0.95 48 -0.04 -0.14 1.18 1.20 0.96 0.96 72 -0.13 -0.23 1.50 1.51 0.95 0.94 96 -0.23 1.85 0.93 120 -0.29 2.33 0.90 144 -0.34 2.95 0.84 168 -0.23 3.55 0.79 192 -0.15 4.25 0.72 216 -0.15 4.86 0.66 240 -0.16 4.83 0.64 264 -0.16 4.95 0.60 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 89 12 UTC = 92 --------------------------------------------------------- TABLE 4.6 NORTH AMERICA VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 250 HPA TEMPERATURE APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (K) (K) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 0.21 0.25 1.10 1.10 0.94 0.94 48 0.16 0.18 1.33 1.36 0.95 0.95 72 0.09 0.15 1.67 1.65 0.93 0.93 96 0.11 2.04 0.90 120 0.08 2.47 0.87 144 0.11 2.96 0.83 168 0.10 3.43 0.77 192 0.20 4.14 0.65 216 0.33 4.43 0.64 240 0.28 4.31 0.63 264 0.13 4.18 0.65 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 88 12 UTC = 92 --------------------------------------------------------- TABLE 4.7 NORTH AMERICA VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 850 HPA WIND APRIL 2015 ------------------------------------------------ FORECAST MEAN SPEED ERROR RMSEV PERIOD (m/s) (m/s) -------- 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ 24 -0.54 -0.85 4.04 4.16 48 -0.64 -0.92 4.58 4.74 72 -0.78 -1.03 5.30 5.49 96 -1.10 6.30 120 -1.17 7.27 144 -0.86 8.76 168 -0.82 10.20 192 -0.77 11.66 216 -0.85 11.81 240 -0.80 11.91 264 -0.81 11.89 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 78 12 UTC = 81 --------------------------------------------------------- TABLE 4.8 NORTH AMERICA VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 500 HPA WIND APRIL 2015 ------------------------------------------------ FORECAST MEAN SPEED ERROR RMSEV PERIOD (m/s) (m/s) -------- 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ 24 -0.65 -0.77 4.68 4.64 48 -0.79 -0.91 5.65 5.73 72 -0.98 -1.05 6.88 6.83 96 -1.17 8.25 120 -1.14 10.08 144 -0.88 12.27 168 -0.80 14.58 192 -0.66 16.69 216 -0.97 17.27 240 -1.15 17.29 264 -1.07 17.71 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 86 12 UTC = 90 --------------------------------------------------------- TABLE 4.9 NORTH AMERICA VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 250 HPA WIND APRIL 2015 ------------------------------------------------ FORECAST MEAN SPEED ERROR RMSEV PERIOD (m/s) (m/s) -------- 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ 24 -0.79 -0.58 6.12 5.97 48 -0.86 -0.68 7.82 7.56 72 -0.89 -0.69 9.39 9.19 96 -0.78 10.83 120 -0.71 13.22 144 -0.35 16.65 168 -0.53 19.94 192 -0.40 23.68 216 -0.61 25.78 240 -0.91 26.11 264 -0.87 26.44 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 86 12 UTC = 90 --------------------------------------------------------- TABLE 5.1 EUROPE/NORTH AFRICA VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 850 HPA GEOPOTENTIAL HEIGHT APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (m) (m) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -5.51 -4.89 9.21 10.07 0.98 0.98 48 -6.06 -7.93 11.98 13.94 0.98 0.98 72 -6.63 -10.10 17.42 18.87 0.97 0.97 96 -9.48 25.29 0.95 120 -8.06 31.92 0.92 144 -6.61 37.78 0.91 168 -5.09 45.69 0.87 192 -4.76 54.89 0.82 216 -11.11 66.96 0.77 240 -17.82 76.59 0.68 264 -20.27 79.24 0.59 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 67 12 UTC = 64 --------------------------------------------------------- TABLE 5.2 EUROPE/NORTH AFRICA VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 500 HPA GEOPOTENTIAL HEIGHT APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (m) (m) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -11.11 -8.86 14.75 13.42 0.98 0.98 48 -11.32 -12.18 18.54 18.68 0.99 0.99 72 -10.57 -14.37 25.94 26.94 0.97 0.97 96 -14.57 38.34 0.96 120 -13.06 50.77 0.93 144 -9.75 60.12 0.92 168 -4.93 73.84 0.90 192 -4.41 91.66 0.84 216 -5.59 107.26 0.74 240 -11.58 125.12 0.65 264 -13.30 129.37 0.63 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 66 12 UTC = 62 --------------------------------------------------------- TABLE 5.3 EUROPE/NORTH AFRICA VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 250 HPA GEOPOTENTIAL HEIGHT APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (m) (m) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -13.23 -10.38 18.27 16.91 0.99 0.99 48 -14.51 -15.06 23.73 24.14 0.99 0.99 72 -15.04 -19.87 33.68 35.27 0.98 0.98 96 -23.07 50.94 0.96 120 -20.41 67.30 0.93 144 -15.92 82.01 0.92 168 -9.06 97.81 0.91 192 -8.06 126.09 0.85 216 -1.35 146.24 0.74 240 -5.87 169.12 0.67 264 -5.22 180.07 0.64 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 67 12 UTC = 63 --------------------------------------------------------- TABLE 5.4 EUROPE/NORTH AFRICA VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 850 HPA TEMPERATURE APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (K) (K) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -0.73 -0.33 1.47 1.24 0.91 0.90 48 -0.73 -0.38 1.57 1.35 0.93 0.93 72 -0.61 -0.33 1.78 1.56 0.92 0.92 96 -0.37 1.96 0.90 120 -0.36 2.59 0.85 144 -0.23 3.05 0.83 168 -0.02 3.51 0.79 192 0.06 4.17 0.72 216 0.44 4.57 0.66 240 0.50 5.15 0.58 264 0.50 5.58 0.56 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 70 12 UTC = 65 --------------------------------------------------------- TABLE 5.5 EUROPE/NORTH AFRICA VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 500 HPA TEMPERATURE APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (K) (K) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -0.12 -0.12 0.85 0.81 0.94 0.95 48 -0.10 -0.15 1.07 1.02 0.96 0.96 72 -0.06 -0.18 1.43 1.42 0.94 0.94 96 -0.24 2.05 0.90 120 -0.15 2.64 0.87 144 -0.16 3.02 0.84 168 0.03 3.28 0.81 192 0.07 4.12 0.73 216 0.40 4.29 0.68 240 0.47 4.71 0.64 264 0.58 5.11 0.61 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 70 12 UTC = 65 --------------------------------------------------------- TABLE 5.6 EUROPE/NORTH AFRICA VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 250 HPA TEMPERATURE APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (K) (K) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 0.31 0.33 1.08 1.09 0.93 0.92 48 0.30 0.31 1.28 1.31 0.93 0.93 72 0.21 0.25 1.62 1.68 0.90 0.90 96 0.22 2.25 0.83 120 0.22 2.75 0.77 144 0.24 2.99 0.76 168 0.20 3.37 0.69 192 0.11 3.96 0.62 216 0.59 3.99 0.58 240 0.67 4.11 0.59 264 0.82 4.20 0.56 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 70 12 UTC = 65 --------------------------------------------------------- TABLE 5.7 EUROPE/NORTH AFRICA VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 850 HPA WIND APRIL 2015 ------------------------------------------------ FORECAST MEAN SPEED ERROR RMSEV PERIOD (m/s) (m/s) -------- 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ 24 -0.65 -0.27 3.89 3.85 48 -0.62 -0.30 4.28 4.22 72 -0.60 -0.44 5.06 4.86 96 -0.50 5.83 120 -0.40 6.74 144 -0.39 7.50 168 -0.22 8.51 192 -0.36 9.51 216 0.05 10.49 240 0.00 10.95 264 -0.01 11.44 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 67 12 UTC = 65 --------------------------------------------------------- TABLE 5.8 EUROPE/NORTH AFRICA VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 500 HPA WIND APRIL 2015 ------------------------------------------------ FORECAST MEAN SPEED ERROR RMSEV PERIOD (m/s) (m/s) -------- 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ 24 -0.32 -0.36 4.16 4.03 48 -0.35 -0.45 5.22 4.96 72 -0.52 -0.64 6.87 6.57 96 -0.90 8.90 120 -0.49 10.86 144 -0.38 11.98 168 -0.13 14.36 192 -0.54 16.79 216 -0.46 17.93 240 -0.04 20.16 264 -0.35 20.37 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 69 12 UTC = 66 --------------------------------------------------------- TABLE 5.9 EUROPE/NORTH AFRICA VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 250 HPA WIND APRIL 2015 ------------------------------------------------ FORECAST MEAN SPEED ERROR RMSEV PERIOD (m/s) (m/s) -------- 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ 24 -0.57 -0.66 4.95 4.98 48 -0.60 -0.79 6.19 6.27 72 -0.85 -1.10 8.57 8.47 96 -1.48 11.89 120 -1.23 15.38 144 -0.94 17.28 168 -0.97 20.11 192 -1.60 24.01 216 -1.71 25.87 240 -1.07 29.06 264 -0.94 29.75 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 69 12 UTC = 65 --------------------------------------------------------- TABLE 6.1 ASIA VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 850 HPA GEOPOTENTIAL HEIGHT APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (m) (m) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 2.31 1.77 12.98 10.28 0.97 0.97 48 1.67 1.42 15.68 12.77 0.96 0.97 72 0.80 1.75 19.51 17.56 0.95 0.95 96 0.81 21.86 0.94 120 0.26 27.06 0.91 144 -0.92 34.86 0.84 168 -0.49 39.22 0.80 192 2.88 43.55 0.76 216 5.27 46.32 0.74 240 4.81 53.23 0.68 264 1.28 57.65 0.64 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 109 12 UTC = 109 --------------------------------------------------------- TABLE 6.2 ASIA VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 500 HPA GEOPOTENTIAL HEIGHT APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (m) (m) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -0.72 -0.50 12.13 12.21 0.98 0.98 48 -0.26 0.07 17.11 16.52 0.97 0.97 72 0.34 1.79 22.83 22.67 0.96 0.96 96 1.31 29.48 0.94 120 1.10 37.76 0.92 144 -0.67 49.56 0.87 168 -1.00 59.40 0.83 192 1.72 65.88 0.81 216 4.18 69.36 0.80 240 3.29 77.47 0.75 264 -0.72 85.47 0.70 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 121 12 UTC = 118 --------------------------------------------------------- TABLE 6.3 ASIA VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 250 HPA GEOPOTENTIAL HEIGHT APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (m) (m) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -5.24 -3.68 20.21 20.11 0.97 0.98 48 -4.53 -2.61 27.10 26.73 0.97 0.98 72 -3.14 0.60 33.97 33.89 0.97 0.97 96 1.06 43.54 0.96 120 1.74 56.47 0.94 144 -0.12 72.66 0.91 168 -1.31 86.71 0.89 192 0.98 102.08 0.85 216 4.65 111.23 0.83 240 4.18 121.81 0.79 264 -1.66 131.55 0.76 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 119 12 UTC = 116 --------------------------------------------------------- TABLE 6.4 ASIA VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 850 HPA TEMPERATURE APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (K) (K) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -0.74 -0.74 2.24 2.03 0.90 0.91 48 -0.66 -0.69 2.42 2.23 0.91 0.92 72 -0.57 -0.57 2.63 2.41 0.90 0.91 96 -0.49 2.70 0.90 120 -0.45 3.10 0.88 144 -0.57 3.59 0.86 168 -0.64 4.23 0.81 192 -0.55 4.66 0.78 216 -0.50 5.06 0.76 240 -0.59 5.41 0.72 264 -0.74 5.75 0.67 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 139 12 UTC = 138 --------------------------------------------------------- TABLE 6.5 ASIA VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 500 HPA TEMPERATURE APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (K) (K) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -0.10 -0.03 1.06 1.04 0.94 0.95 48 -0.05 0.02 1.35 1.31 0.95 0.96 72 0.02 0.09 1.67 1.61 0.94 0.95 96 0.12 1.95 0.94 120 0.19 2.43 0.92 144 0.16 2.92 0.90 168 0.16 3.48 0.87 192 0.08 3.98 0.83 216 0.13 4.26 0.81 240 0.13 4.64 0.77 264 0.05 4.91 0.74 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 157 12 UTC = 154 --------------------------------------------------------- TABLE 6.6 ASIA VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 250 HPA TEMPERATURE APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (K) (K) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -0.05 0.10 1.25 1.27 0.91 0.91 48 -0.07 0.12 1.53 1.51 0.91 0.91 72 -0.09 0.13 1.81 1.77 0.88 0.89 96 0.16 2.12 0.85 120 0.15 2.45 0.84 144 0.21 2.87 0.79 168 0.24 3.15 0.74 192 0.25 3.41 0.72 216 0.25 3.60 0.70 240 0.32 3.76 0.64 264 0.29 4.04 0.59 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 155 12 UTC = 152 --------------------------------------------------------- TABLE 6.7 ASIA VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 850 HPA WIND APRIL 2015 ------------------------------------------------ FORECAST MEAN SPEED ERROR RMSEV PERIOD (m/s) (m/s) -------- 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ 24 -0.75 -0.72 4.12 3.98 48 -0.80 -0.66 4.76 4.58 72 -0.77 -0.68 5.52 5.22 96 -0.71 6.09 120 -0.67 6.78 144 -0.68 7.87 168 -0.75 8.45 192 -0.86 9.01 216 -0.78 9.26 240 -0.68 9.84 264 -0.89 10.16 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 135 12 UTC = 135 --------------------------------------------------------- TABLE 6.8 ASIA VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 500 HPA WIND APRIL 2015 ------------------------------------------------ FORECAST MEAN SPEED ERROR RMSEV PERIOD (m/s) (m/s) -------- 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ 24 -0.69 -0.49 4.61 4.62 48 -0.80 -0.60 5.73 5.70 72 -0.89 -0.79 7.01 6.81 96 -0.91 8.13 120 -1.11 9.41 144 -1.04 10.98 168 -1.13 12.08 192 -1.38 13.11 216 -1.21 13.76 240 -1.03 14.88 264 -1.27 15.46 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 154 12 UTC = 150 --------------------------------------------------------- TABLE 6.9 ASIA VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 250 HPA WIND APRIL 2015 ------------------------------------------------ FORECAST MEAN SPEED ERROR RMSEV PERIOD (m/s) (m/s) -------- 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ 24 -0.71 -0.60 6.52 6.24 48 -1.11 -0.74 8.25 7.97 72 -1.38 -1.08 9.71 9.47 96 -1.27 11.35 120 -1.46 13.37 144 -1.46 15.28 168 -1.61 16.86 192 -1.63 19.13 216 -1.28 20.84 240 -1.06 22.27 264 -1.32 22.96 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 150 12 UTC = 148 --------------------------------------------------------- TABLE 7.1 AUSTRALIA/NEW ZEALAND VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 850 HPA GEOPOTENTIAL HEIGHT APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (m) (m) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -0.72 -1.39 6.04 6.25 0.97 0.97 48 -0.63 -0.60 8.95 9.41 0.97 0.99 72 -0.32 0.20 12.59 14.62 0.95 0.92 96 0.35 21.27 0.90 120 1.49 26.67 0.86 144 -0.08 33.35 0.79 168 1.17 35.31 0.70 192 -1.75 40.29 0.71 216 -5.08 49.18 0.55 240 -6.21 53.30 0.47 264 -8.16 60.14 0.39 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 26 12 UTC = 9 --------------------------------------------------------- TABLE 7.2 AUSTRALIA/NEW ZEALAND VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 500 HPA GEOPOTENTIAL HEIGHT APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (m) (m) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -6.58 -8.42 10.73 11.96 0.98 0.99 48 -7.40 -8.15 13.79 15.70 0.98 0.98 72 -7.34 -9.11 18.97 23.06 0.96 0.95 96 -9.01 32.88 0.94 120 -6.88 41.65 0.87 144 -6.84 46.65 0.82 168 -3.76 49.28 0.78 192 -3.93 60.69 0.71 216 -10.73 69.70 0.64 240 -10.88 78.67 0.48 264 -8.83 91.35 0.35 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 26 12 UTC = 9 --------------------------------------------------------- TABLE 7.3 AUSTRALIA/NEW ZEALAND VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 250 HPA GEOPOTENTIAL HEIGHT APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (m) (m) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -6.49 -10.35 12.58 14.93 0.98 0.99 48 -8.81 -11.94 17.92 21.79 0.98 0.98 72 -11.55 -14.93 27.22 32.57 0.97 0.95 96 -15.58 46.65 0.94 120 -13.31 56.12 0.89 144 -12.75 65.06 0.85 168 -7.38 70.45 0.82 192 -2.71 84.82 0.72 216 -8.83 92.49 0.65 240 -9.93 107.76 0.52 264 -4.14 119.83 0.41 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 26 12 UTC = 9 --------------------------------------------------------- TABLE 7.4 AUSTRALIA/NEW ZEALAND VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 850 HPA TEMPERATURE APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (K) (K) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -0.19 -0.18 1.18 1.34 0.84 0.80 48 -0.05 -0.05 1.38 1.64 0.88 0.86 72 0.07 -0.01 1.67 1.97 0.89 0.83 96 0.00 2.18 0.84 120 0.08 2.47 0.79 144 0.31 2.91 0.66 168 0.55 3.28 0.65 192 0.85 3.70 0.58 216 0.52 3.43 0.68 240 0.44 3.52 0.61 264 0.67 4.04 0.54 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 27 12 UTC = 9 --------------------------------------------------------- TABLE 7.5 AUSTRALIA/NEW ZEALAND VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 500 HPA TEMPERATURE APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (K) (K) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -0.02 -0.12 0.81 0.68 0.87 0.91 48 -0.12 -0.22 0.98 0.97 0.90 0.90 72 -0.18 -0.34 1.23 1.14 0.88 0.89 96 -0.33 1.62 0.87 120 -0.29 1.81 0.78 144 -0.23 1.97 0.82 168 -0.05 2.19 0.72 192 0.07 2.28 0.66 216 -0.06 2.53 0.64 240 0.00 2.69 0.58 264 0.28 3.09 0.50 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 27 12 UTC = 10 --------------------------------------------------------- TABLE 7.6 AUSTRALIA/NEW ZEALAND VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 250 HPA TEMPERATURE APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (K) (K) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 0.23 0.07 0.92 0.93 0.89 0.85 48 0.12 -0.03 1.15 1.30 0.88 0.89 72 -0.10 -0.12 1.44 1.59 0.88 0.83 96 -0.26 2.10 0.76 120 -0.38 2.38 0.74 144 -0.40 2.41 0.72 168 -0.29 2.60 0.67 192 0.00 2.96 0.52 216 0.21 3.00 0.45 240 0.05 3.17 0.49 264 0.10 3.52 0.44 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 27 12 UTC = 10 --------------------------------------------------------- TABLE 7.7 AUSTRALIA/NEW ZEALAND VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 850 HPA WIND APRIL 2015 ------------------------------------------------ FORECAST MEAN SPEED ERROR RMSEV PERIOD (m/s) (m/s) -------- 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ 24 -0.53 -0.54 3.68 3.47 48 -0.59 -0.52 4.17 3.98 72 -0.62 -0.64 4.88 4.46 96 -0.72 5.19 120 -0.70 5.75 144 -0.63 6.70 168 -0.62 6.98 192 -0.44 7.46 216 -0.48 7.75 240 -0.57 8.35 264 -0.51 8.69 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 29 12 UTC = 14 --------------------------------------------------------- TABLE 7.8 AUSTRALIA/NEW ZEALAND VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 500 HPA WIND APRIL 2015 ------------------------------------------------ FORECAST MEAN SPEED ERROR RMSEV PERIOD (m/s) (m/s) -------- 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ 24 -0.69 -0.93 4.00 4.04 48 -0.79 -1.11 4.77 4.80 72 -0.86 -1.14 5.90 6.09 96 -1.25 7.60 120 -1.25 9.00 144 -1.18 10.09 168 -1.35 10.48 192 -1.13 11.53 216 -1.24 12.14 240 -1.09 13.23 264 -1.23 13.35 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 29 12 UTC = 14 --------------------------------------------------------- TABLE 7.9 AUSTRALIA/NEW ZEALAND VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 250 HPA WIND APRIL 2015 ------------------------------------------------ FORECAST MEAN SPEED ERROR RMSEV PERIOD (m/s) (m/s) -------- 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ 24 -0.88 -0.98 5.40 5.35 48 -1.10 -1.26 6.82 7.00 72 -1.26 -1.69 8.30 8.58 96 -1.91 11.20 120 -1.41 13.72 144 -1.02 15.57 168 -1.17 17.16 192 -0.56 18.58 216 -0.55 20.46 240 -0.72 21.34 264 -1.38 22.13 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 29 12 UTC = 14 --------------------------------------------------------- TABLE 8.1 TROPICS VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 850 HPA GEOPOTENTIAL HEIGHT APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (m) (m) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -3.59 -3.63 10.86 10.72 0.60 0.63 48 -3.65 -3.54 11.21 11.08 0.73 0.75 72 -4.07 -4.18 11.56 11.65 0.73 0.75 96 -4.79 11.95 0.76 120 -5.70 12.41 0.76 144 -6.34 13.02 0.76 168 -6.65 13.78 0.73 192 -6.15 14.10 0.68 216 -6.07 14.77 0.63 240 -5.66 15.56 0.61 264 -5.02 15.73 0.58 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 69 12 UTC = 72 --------------------------------------------------------- TABLE 8.2 TROPICS VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 500 HPA GEOPOTENTIAL HEIGHT APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (m) (m) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -10.96 -10.37 15.30 14.85 0.54 0.55 48 -11.81 -11.11 16.06 15.67 0.69 0.69 72 -12.55 -11.89 16.77 16.40 0.72 0.73 96 -12.66 17.09 0.74 120 -13.67 17.98 0.75 144 -14.23 18.54 0.76 168 -14.32 18.83 0.76 192 -13.71 18.82 0.73 216 -13.20 19.43 0.66 240 -12.77 20.12 0.62 264 -12.28 20.20 0.58 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 70 12 UTC = 73 --------------------------------------------------------- TABLE 8.3 TROPICS VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 250 HPA GEOPOTENTIAL HEIGHT APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (m) (m) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -9.88 -10.35 16.82 16.68 0.56 0.59 48 -11.80 -12.33 18.59 18.45 0.70 0.73 72 -13.29 -13.66 20.10 19.98 0.75 0.78 96 -14.83 21.25 0.79 120 -16.19 22.71 0.78 144 -16.93 24.05 0.78 168 -17.00 24.84 0.77 192 -15.95 25.12 0.76 216 -15.46 26.44 0.73 240 -14.88 27.80 0.69 264 -14.35 28.63 0.65 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 70 12 UTC = 72 --------------------------------------------------------- TABLE 8.4 TROPICS VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 850 HPA TEMPERATURE APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (K) (K) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -0.46 -0.45 1.01 1.02 0.41 0.46 48 -0.43 -0.46 1.02 1.06 0.54 0.57 72 -0.44 -0.47 1.05 1.08 0.61 0.65 96 -0.49 1.11 0.70 120 -0.52 1.15 0.71 144 -0.51 1.17 0.73 168 -0.48 1.18 0.74 192 -0.48 1.22 0.73 216 -0.48 1.27 0.70 240 -0.46 1.30 0.67 264 -0.44 1.37 0.63 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 77 12 UTC = 81 --------------------------------------------------------- TABLE 8.5 TROPICS VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 500 HPA TEMPERATURE APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (K) (K) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 0.06 -0.02 0.74 0.77 0.54 0.52 48 0.02 -0.08 0.78 0.81 0.62 0.60 72 -0.01 -0.09 0.82 0.86 0.64 0.62 96 -0.11 0.91 0.61 120 -0.13 0.93 0.63 144 -0.12 0.97 0.61 168 -0.11 1.00 0.61 192 -0.10 1.03 0.61 216 -0.08 1.06 0.60 240 -0.10 1.12 0.56 264 -0.11 1.16 0.55 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 79 12 UTC = 83 --------------------------------------------------------- TABLE 8.6 TROPICS VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 250 HPA TEMPERATURE APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (K) (K) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 0.10 0.04 0.64 0.59 0.52 0.57 48 0.06 -0.01 0.70 0.66 0.56 0.60 72 0.04 -0.04 0.75 0.71 0.58 0.61 96 -0.06 0.77 0.60 120 -0.10 0.82 0.60 144 -0.12 0.86 0.61 168 -0.11 0.89 0.60 192 -0.09 0.92 0.58 216 -0.09 0.97 0.58 240 -0.06 1.03 0.56 264 -0.07 1.06 0.53 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 78 12 UTC = 82 --------------------------------------------------------- TABLE 8.7 TROPICS VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 850 HPA WIND APRIL 2015 ------------------------------------------------ FORECAST MEAN SPEED ERROR RMSEV PERIOD (m/s) (m/s) -------- 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ 24 -0.58 -0.60 3.23 3.16 48 -0.73 -0.68 3.43 3.32 72 -0.81 -0.71 3.63 3.49 96 -0.78 3.66 120 -0.80 3.82 144 -0.81 3.98 168 -0.75 4.14 192 -0.71 4.34 216 -0.69 4.50 240 -0.69 4.74 264 -0.68 4.84 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 68 12 UTC = 75 --------------------------------------------------------- TABLE 8.8 TROPICS VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 500 HPA WIND APRIL 2015 ------------------------------------------------ FORECAST MEAN SPEED ERROR RMSEV PERIOD (m/s) (m/s) -------- 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ 24 -0.58 -0.60 3.37 3.36 48 -0.68 -0.73 3.68 3.66 72 -0.74 -0.72 3.97 4.04 96 -0.68 4.30 120 -0.71 4.55 144 -0.71 4.83 168 -0.63 5.09 192 -0.54 5.47 216 -0.50 5.86 240 -0.44 6.16 264 -0.39 6.50 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 69 12 UTC = 76 --------------------------------------------------------- TABLE 8.9 TROPICS VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 250 HPA WIND APRIL 2015 ------------------------------------------------ FORECAST MEAN SPEED ERROR RMSEV PERIOD (m/s) (m/s) -------- 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ 24 -1.01 -0.97 4.56 4.49 48 -1.39 -1.29 5.32 5.38 72 -1.77 -1.64 5.87 6.07 96 -1.90 6.73 120 -2.03 7.46 144 -2.16 8.09 168 -2.27 8.69 192 -2.30 9.17 216 -2.09 9.62 240 -2.08 10.04 264 -2.24 10.59 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 68 12 UTC = 74 --------------------------------------------------------- TABLE 9.1 NORTHERN EXTRATROPICS VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 850 HPA GEOPOTENTIAL HEIGHT APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (m) (m) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -1.99 -2.40 11.07 10.42 0.98 0.98 48 -2.30 -3.17 14.08 13.76 0.98 0.98 72 -2.32 -3.16 19.01 18.55 0.97 0.97 96 -2.92 25.05 0.95 120 -2.50 32.91 0.93 144 -2.97 41.45 0.89 168 -2.93 49.57 0.85 192 -0.97 57.65 0.81 216 -0.44 62.02 0.78 240 -1.20 68.38 0.74 264 -2.15 73.55 0.68 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 382 12 UTC = 378 --------------------------------------------------------- TABLE 9.2 NORTHERN EXTRATROPICS VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 500 HPA GEOPOTENTIAL HEIGHT APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (m) (m) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -5.57 -5.50 13.41 13.20 0.98 0.98 48 -5.49 -6.02 18.31 17.99 0.98 0.98 72 -4.83 -5.46 25.68 25.44 0.97 0.97 96 -4.65 35.92 0.95 120 -3.83 48.61 0.92 144 -4.24 61.13 0.89 168 -3.92 73.17 0.85 192 -2.09 86.40 0.81 216 0.01 93.94 0.78 240 -0.42 102.72 0.74 264 -0.78 109.44 0.69 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 398 12 UTC = 391 --------------------------------------------------------- TABLE 9.3 NORTHERN EXTRATROPICS VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 250 HPA GEOPOTENTIAL HEIGHT APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (m) (m) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -8.39 -7.97 19.08 19.09 0.98 0.98 48 -8.96 -9.16 25.42 25.48 0.98 0.98 72 -9.10 -9.26 34.25 34.76 0.98 0.98 96 -9.00 47.18 0.96 120 -8.08 63.91 0.94 144 -8.13 81.28 0.91 168 -7.50 97.48 0.88 192 -5.32 118.85 0.82 216 -1.57 132.84 0.79 240 -1.14 143.29 0.75 264 -1.08 152.30 0.70 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 396 12 UTC = 390 --------------------------------------------------------- TABLE 9.4 NORTHERN EXTRATROPICS VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 850 HPA TEMPERATURE APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (K) (K) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -0.62 -0.55 1.79 1.70 0.91 0.92 48 -0.56 -0.52 1.95 1.88 0.94 0.93 72 -0.46 -0.42 2.18 2.09 0.93 0.93 96 -0.34 2.45 0.91 120 -0.29 2.93 0.89 144 -0.29 3.45 0.86 168 -0.28 4.02 0.81 192 -0.24 4.54 0.77 216 -0.12 4.92 0.74 240 -0.10 5.29 0.70 264 -0.17 5.58 0.66 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 419 12 UTC = 415 --------------------------------------------------------- TABLE 9.5 NORTHERN EXTRATROPICS VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 500 HPA TEMPERATURE APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (K) (K) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -0.10 -0.09 0.98 0.97 0.95 0.95 48 -0.09 -0.09 1.26 1.22 0.96 0.96 72 -0.08 -0.09 1.61 1.58 0.95 0.95 96 -0.09 2.03 0.93 120 -0.05 2.59 0.90 144 -0.07 3.11 0.87 168 -0.04 3.59 0.84 192 -0.04 4.17 0.78 216 0.03 4.54 0.75 240 0.07 4.75 0.72 264 0.13 4.96 0.68 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 448 12 UTC = 441 --------------------------------------------------------- TABLE 9.6 NORTHERN EXTRATROPICS VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 250 HPA TEMPERATURE APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (K) (K) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 0.12 0.18 1.17 1.17 0.94 0.93 48 0.09 0.15 1.45 1.45 0.94 0.94 72 0.05 0.12 1.80 1.79 0.92 0.92 96 0.10 2.26 0.89 120 0.06 2.74 0.86 144 0.11 3.18 0.82 168 0.12 3.54 0.78 192 0.12 3.94 0.73 216 0.19 4.15 0.71 240 0.22 4.26 0.69 264 0.18 4.47 0.65 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 443 12 UTC = 437 --------------------------------------------------------- TABLE 9.7 NORTHERN EXTRATROPICS VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 850 HPA WIND APRIL 2015 ------------------------------------------------ FORECAST MEAN SPEED ERROR RMSEV PERIOD (m/s) (m/s) -------- 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ 24 -0.66 -0.63 3.96 3.92 48 -0.71 -0.63 4.50 4.45 72 -0.74 -0.69 5.28 5.16 96 -0.72 6.12 120 -0.71 7.03 144 -0.63 8.21 168 -0.62 9.11 192 -0.66 9.94 216 -0.56 10.39 240 -0.50 10.67 264 -0.58 11.02 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 401 12 UTC = 398 --------------------------------------------------------- TABLE 9.8 NORTHERN EXTRATROPICS VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 500 HPA WIND APRIL 2015 ------------------------------------------------ FORECAST MEAN SPEED ERROR RMSEV PERIOD (m/s) (m/s) -------- 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ 24 -0.64 -0.62 4.44 4.44 48 -0.74 -0.74 5.55 5.54 72 -0.85 -0.91 7.03 6.91 96 -1.00 8.63 120 -0.97 10.37 144 -0.90 12.02 168 -0.91 13.62 192 -1.00 15.15 216 -0.93 16.12 240 -0.83 17.12 264 -0.87 17.68 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 434 12 UTC = 428 --------------------------------------------------------- TABLE 9.9 NORTHERN EXTRATROPICS VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 250 HPA WIND APRIL 2015 ------------------------------------------------ FORECAST MEAN SPEED ERROR RMSEV PERIOD (m/s) (m/s) -------- 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ 24 -0.67 -0.56 5.61 5.48 48 -0.88 -0.70 7.21 7.01 72 -1.04 -0.90 8.93 8.84 96 -1.04 11.02 120 -1.00 13.59 144 -0.88 15.93 168 -1.03 18.30 192 -1.11 21.05 216 -1.05 22.95 240 -0.97 24.39 264 -0.85 25.18 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 430 12 UTC = 425 --------------------------------------------------------- TABLE 10.1 SOUTHERN EXTRATROPICS VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 850 HPA GEOPOTENTIAL HEIGHT APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (m) (m) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -0.07 -0.40 8.51 10.23 0.98 0.97 48 0.41 0.06 11.54 13.27 0.97 0.97 72 1.29 0.72 16.26 18.68 0.95 0.96 96 1.47 24.54 0.92 120 1.44 30.71 0.89 144 1.34 38.46 0.84 168 3.15 43.06 0.80 192 4.64 49.13 0.72 216 3.69 58.44 0.64 240 2.80 61.81 0.59 264 2.52 63.04 0.56 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 39 12 UTC = 37 --------------------------------------------------------- TABLE 10.2 SOUTHERN EXTRATROPICS VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 500 HPA GEOPOTENTIAL HEIGHT APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (m) (m) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -6.25 -7.05 12.48 13.72 0.98 0.98 48 -6.22 -6.72 15.91 18.10 0.98 0.98 72 -4.64 -5.29 22.37 25.38 0.96 0.96 96 -4.41 35.34 0.94 120 -3.69 45.96 0.91 144 -3.11 55.30 0.85 168 0.21 65.74 0.79 192 3.39 70.92 0.75 216 2.89 79.04 0.69 240 3.80 86.82 0.64 264 3.58 91.41 0.60 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 40 12 UTC = 37 --------------------------------------------------------- TABLE 10.3 SOUTHERN EXTRATROPICS VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 250 HPA GEOPOTENTIAL HEIGHT APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (m) (m) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -7.44 -8.59 15.45 16.60 0.98 0.98 48 -8.91 -9.83 21.01 23.14 0.98 0.98 72 -9.90 -9.07 30.41 33.44 0.97 0.97 96 -9.19 47.00 0.95 120 -8.88 62.30 0.91 144 -7.26 76.35 0.87 168 -3.83 89.89 0.82 192 1.61 98.43 0.76 216 2.09 108.13 0.73 240 5.28 122.37 0.65 264 3.12 125.33 0.62 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 40 12 UTC = 38 --------------------------------------------------------- TABLE 10.4 SOUTHERN EXTRATROPICS VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 850 HPA TEMPERATURE APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (K) (K) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -0.48 -0.63 1.67 1.75 0.86 0.87 48 -0.39 -0.57 1.82 1.94 0.88 0.89 72 -0.29 -0.44 2.04 2.21 0.88 0.86 96 -0.42 2.53 0.85 120 -0.35 2.73 0.83 144 -0.36 3.21 0.78 168 -0.32 3.55 0.74 192 -0.40 3.94 0.69 216 -0.38 4.06 0.64 240 -0.20 4.26 0.59 264 -0.24 4.19 0.62 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 40 12 UTC = 38 --------------------------------------------------------- TABLE 10.5 SOUTHERN EXTRATROPICS VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 500 HPA TEMPERATURE APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (K) (K) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 -0.07 -0.07 0.86 0.90 0.91 0.92 48 -0.14 -0.08 1.05 1.14 0.93 0.93 72 -0.17 -0.08 1.36 1.48 0.91 0.91 96 -0.09 1.92 0.88 120 -0.06 2.28 0.83 144 -0.05 2.62 0.78 168 0.00 2.89 0.75 192 0.21 3.21 0.68 216 0.22 3.47 0.63 240 0.32 3.64 0.61 264 0.29 3.66 0.60 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 42 12 UTC = 40 --------------------------------------------------------- TABLE 10.6 SOUTHERN EXTRATROPICS VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 250 HPA TEMPERATURE APRIL 2015 ------------------------------------------------ FORECAST MEAN ERROR RMSE trend corr. PERIOD (K) (K) -------------- -------- 00 UTC 12 UTC 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ ------ ------ 24 0.12 0.13 1.01 1.00 0.90 0.91 48 0.01 0.02 1.28 1.30 0.90 0.92 72 -0.17 -0.05 1.67 1.68 0.89 0.89 96 -0.12 2.13 0.83 120 -0.20 2.47 0.79 144 -0.25 2.76 0.72 168 -0.25 3.01 0.71 192 -0.31 3.16 0.68 216 -0.12 3.44 0.63 240 -0.13 3.53 0.61 264 -0.20 3.65 0.61 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 42 12 UTC = 40 --------------------------------------------------------- TABLE 10.7 SOUTHERN EXTRATROPICS VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 850 HPA WIND APRIL 2015 ------------------------------------------------ FORECAST MEAN SPEED ERROR RMSEV PERIOD (m/s) (m/s) -------- 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ 24 -0.74 -0.59 4.30 4.14 48 -0.82 -0.66 4.68 4.59 72 -0.82 -0.70 5.39 5.24 96 -0.64 6.16 120 -0.63 6.88 144 -0.37 7.77 168 -0.48 8.21 192 -0.43 8.75 216 -0.56 9.10 240 -0.36 9.52 264 -0.17 9.81 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 40 12 UTC = 39 --------------------------------------------------------- TABLE 10.8 SOUTHERN EXTRATROPICS VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 500 HPA WIND APRIL 2015 ------------------------------------------------ FORECAST MEAN SPEED ERROR RMSEV PERIOD (m/s) (m/s) -------- 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ 24 -0.60 -0.77 4.31 4.48 48 -0.83 -0.95 5.16 5.43 72 -0.96 -1.07 6.26 6.87 96 -1.13 8.45 120 -1.31 9.87 144 -1.16 11.25 168 -1.22 12.05 192 -1.09 13.16 216 -1.32 14.04 240 -1.11 14.68 264 -1.25 15.12 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 42 12 UTC = 41 --------------------------------------------------------- TABLE 10.9 SOUTHERN EXTRATROPICS VERIFICATION AGAINST RADIOSONDES ------------------------------------------------------ 250 HPA WIND APRIL 2015 ------------------------------------------------ FORECAST MEAN SPEED ERROR RMSEV PERIOD (m/s) (m/s) -------- 00 UTC 12 UTC 00 UTC 12 UTC (HOURS) ------ ------ ------ ------ 24 -0.69 -0.76 5.44 5.44 48 -0.95 -1.04 6.78 7.06 72 -1.36 -1.31 8.44 8.74 96 -1.61 11.33 120 -1.91 13.87 144 -1.87 16.58 168 -1.94 18.58 192 -1.60 20.00 216 -1.96 21.46 240 -1.88 21.95 264 -2.71 22.85 --------------------------------------------------------- NUMBER OF OBSERVATIONS USED 00 UTC = 42 12 UTC = 41 ---------------------------------------------------------