Mean State

Download Data
Period Mean (original grids) [mm d-1]
Model Period Mean (intersection) [mm d-1]
Benchmark Period Mean (intersection) [mm d-1]
Model Period Mean (complement) [mm d-1]
Benchmark Period Mean (complement) [mm d-1]
Bias [mm d-1]
RMSE [mm d-1]
Phase Shift [months]
Bias Score [1]
RMSE Score [1]
Seasonal Cycle Score [1]
Spatial Distribution Score [1]
Overall Score [1]
Benchmark [-] 3.69
I62_CRUJRA [-] 3.61 3.63 3.71 3.34 -0.0636 0.868 0.586 0.643 0.694 0.921 0.988 0.788
I63_CRUJRA [-] 3.61 3.63 3.71 3.34 -0.0636 0.868 0.586 0.643 0.694 0.921 0.988 0.788
I65_CRUJRA [-] 3.61 3.63 3.71 3.34 -0.0636 0.868 0.586 0.643 0.694 0.921 0.988 0.788
I67_GSWP3 [-] 3.56 3.57 3.69 3.43 -0.120 0.788 0.791 0.657 0.718 0.882 0.994 0.794
Download Data
Period Mean (original grids) [mm d-1]
Model Period Mean (intersection) [mm d-1]
Benchmark Period Mean (intersection) [mm d-1]
Model Period Mean (complement) [mm d-1]
Benchmark Period Mean (complement) [mm d-1]
Bias [mm d-1]
RMSE [mm d-1]
Phase Shift [months]
Bias Score [1]
RMSE Score [1]
Seasonal Cycle Score [1]
Spatial Distribution Score [1]
Overall Score [1]
Benchmark [-] 2.49
I62_CRUJRA [-] 2.38 2.35 2.47 3.99 -0.108 0.640 0.167 0.584 0.664 0.982 0.991 0.777
I63_CRUJRA [-] 2.38 2.35 2.47 3.99 -0.108 0.640 0.167 0.584 0.664 0.982 0.991 0.777
I65_CRUJRA [-] 2.38 2.35 2.47 3.99 -0.108 0.640 0.167 0.584 0.664 0.982 0.991 0.777
I67_GSWP3 [-] 2.35 2.32 2.48 6.68 -0.139 0.615 0.189 0.585 0.684 0.981 0.991 0.785
Download Data
Period Mean (original grids) [mm d-1]
Model Period Mean (intersection) [mm d-1]
Benchmark Period Mean (intersection) [mm d-1]
Model Period Mean (complement) [mm d-1]
Benchmark Period Mean (complement) [mm d-1]
Bias [mm d-1]
RMSE [mm d-1]
Phase Shift [months]
Bias Score [1]
RMSE Score [1]
Seasonal Cycle Score [1]
Spatial Distribution Score [1]
Overall Score [1]
Benchmark [-] 2.43
I62_CRUJRA [-] 2.35 2.34 2.43 2.45 -0.0824 0.615 0.633 0.686 0.747 0.925 0.990 0.819
I63_CRUJRA [-] 2.35 2.34 2.43 2.45 -0.0824 0.615 0.633 0.686 0.747 0.925 0.990 0.819
I65_CRUJRA [-] 2.35 2.34 2.43 2.45 -0.0824 0.615 0.633 0.686 0.747 0.925 0.990 0.819
I67_GSWP3 [-] 2.38 2.37 2.44 2.09 -0.0500 0.557 0.491 0.715 0.783 0.936 0.989 0.841
Download Data
Period Mean (original grids) [mm d-1]
Model Period Mean (intersection) [mm d-1]
Benchmark Period Mean (intersection) [mm d-1]
Model Period Mean (complement) [mm d-1]
Benchmark Period Mean (complement) [mm d-1]
Bias [mm d-1]
RMSE [mm d-1]
Phase Shift [months]
Bias Score [1]
RMSE Score [1]
Seasonal Cycle Score [1]
Spatial Distribution Score [1]
Overall Score [1]
Benchmark [-] 1.34
I62_CRUJRA [-] 0.969 0.969 1.32 1.59 -0.332 0.478 0.711 0.399 0.627 0.910 0.945 0.702
I63_CRUJRA [-] 0.969 0.969 1.32 1.59 -0.332 0.478 0.711 0.399 0.627 0.910 0.945 0.702
I65_CRUJRA [-] 0.969 0.969 1.32 1.59 -0.332 0.478 0.711 0.399 0.627 0.910 0.945 0.702
I67_GSWP3 [-] 1.13 1.12 1.33 1.34 -0.154 0.294 0.625 0.617 0.771 0.921 0.989 0.814
Download Data
Period Mean (original grids) [mm d-1]
Model Period Mean (intersection) [mm d-1]
Benchmark Period Mean (intersection) [mm d-1]
Model Period Mean (complement) [mm d-1]
Benchmark Period Mean (complement) [mm d-1]
Bias [mm d-1]
RMSE [mm d-1]
Phase Shift [months]
Bias Score [1]
RMSE Score [1]
Seasonal Cycle Score [1]
Spatial Distribution Score [1]
Overall Score [1]
Benchmark [-] 7.16
I62_CRUJRA [-] 7.79 7.80 7.47 6.10 0.0758 1.92 1.34 0.484 0.688 0.810 0.987 0.731
I63_CRUJRA [-] 7.79 7.80 7.47 6.10 0.0758 1.92 1.34 0.484 0.688 0.810 0.987 0.731
I65_CRUJRA [-] 7.79 7.80 7.47 6.10 0.0758 1.92 1.34 0.484 0.688 0.810 0.987 0.731
I67_GSWP3 [-] 8.03 8.05 7.23 6.19 0.324 1.66 1.06 0.541 0.730 0.850 0.990 0.768
Download Data
Period Mean (original grids) [mm d-1]
Model Period Mean (intersection) [mm d-1]
Benchmark Period Mean (intersection) [mm d-1]
Model Period Mean (complement) [mm d-1]
Benchmark Period Mean (complement) [mm d-1]
Bias [mm d-1]
RMSE [mm d-1]
Phase Shift [months]
Bias Score [1]
RMSE Score [1]
Seasonal Cycle Score [1]
Spatial Distribution Score [1]
Overall Score [1]
Benchmark [-] 1.73
I62_CRUJRA [-] 1.47 1.47 1.72 2.48 -0.235 0.403 0.844 0.544 0.728 0.872 0.908 0.756
I63_CRUJRA [-] 1.47 1.47 1.72 2.48 -0.235 0.403 0.844 0.544 0.728 0.872 0.908 0.756
I65_CRUJRA [-] 1.47 1.47 1.72 2.48 -0.235 0.403 0.844 0.544 0.728 0.872 0.908 0.756
I67_GSWP3 [-] 1.47 1.47 1.71 2.34 -0.221 0.315 0.845 0.616 0.800 0.871 0.961 0.810
Download Data
Period Mean (original grids) [mm d-1]
Model Period Mean (intersection) [mm d-1]
Benchmark Period Mean (intersection) [mm d-1]
Model Period Mean (complement) [mm d-1]
Benchmark Period Mean (complement) [mm d-1]
Bias [mm d-1]
RMSE [mm d-1]
Phase Shift [months]
Bias Score [1]
RMSE Score [1]
Seasonal Cycle Score [1]
Spatial Distribution Score [1]
Overall Score [1]
Benchmark [-] 1.78
I62_CRUJRA [-] 1.43 1.43 1.74 4.28 -0.187 0.486 0.895 0.577 0.716 0.865 0.989 0.773
I63_CRUJRA [-] 1.43 1.43 1.74 4.28 -0.187 0.486 0.895 0.577 0.716 0.865 0.989 0.773
I65_CRUJRA [-] 1.43 1.43 1.74 4.28 -0.187 0.486 0.895 0.577 0.716 0.865 0.989 0.773
I67_GSWP3 [-] 1.44 1.45 1.76 4.86 -0.155 0.416 0.677 0.632 0.770 0.903 0.990 0.813
Download Data
Period Mean (original grids) [mm d-1]
Model Period Mean (intersection) [mm d-1]
Benchmark Period Mean (intersection) [mm d-1]
Model Period Mean (complement) [mm d-1]
Benchmark Period Mean (complement) [mm d-1]
Bias [mm d-1]
RMSE [mm d-1]
Phase Shift [months]
Bias Score [1]
RMSE Score [1]
Seasonal Cycle Score [1]
Spatial Distribution Score [1]
Overall Score [1]
Benchmark [-] 3.96
I62_CRUJRA [-] 3.57 3.57 3.87 5.22 0.00697 1.59 0.725 0.523 0.542 0.917 0.941 0.693
I63_CRUJRA [-] 3.57 3.57 3.87 5.22 0.00697 1.59 0.725 0.523 0.542 0.917 0.941 0.693
I65_CRUJRA [-] 3.57 3.57 3.87 5.22 0.00697 1.59 0.725 0.523 0.542 0.917 0.941 0.693
I67_GSWP3 [-] 3.70 3.69 3.96 5.02 0.129 1.44 0.584 0.551 0.594 0.925 0.945 0.722
Download Data
Period Mean (original grids) [mm d-1]
Model Period Mean (intersection) [mm d-1]
Benchmark Period Mean (intersection) [mm d-1]
Model Period Mean (complement) [mm d-1]
Benchmark Period Mean (complement) [mm d-1]
Bias [mm d-1]
RMSE [mm d-1]
Phase Shift [months]
Bias Score [1]
RMSE Score [1]
Seasonal Cycle Score [1]
Spatial Distribution Score [1]
Overall Score [1]
Benchmark [-] 1.56
I62_CRUJRA [-] 1.11 1.11 1.57 1.30 -0.474 0.548 1.06 0.305 0.654 0.874 0.805 0.658
I63_CRUJRA [-] 1.11 1.11 1.57 1.30 -0.474 0.548 1.06 0.305 0.654 0.874 0.805 0.658
I65_CRUJRA [-] 1.11 1.11 1.57 1.30 -0.474 0.548 1.06 0.305 0.654 0.874 0.805 0.658
I67_GSWP3 [-] 1.30 1.30 1.56 1.36 -0.279 0.347 0.775 0.488 0.778 0.899 0.969 0.782
Download Data
Period Mean (original grids) [mm d-1]
Model Period Mean (intersection) [mm d-1]
Benchmark Period Mean (intersection) [mm d-1]
Model Period Mean (complement) [mm d-1]
Benchmark Period Mean (complement) [mm d-1]
Bias [mm d-1]
RMSE [mm d-1]
Phase Shift [months]
Bias Score [1]
RMSE Score [1]
Seasonal Cycle Score [1]
Spatial Distribution Score [1]
Overall Score [1]
Benchmark [-] 1.72
I62_CRUJRA [-] 1.43 1.43 1.64 2.85 -0.0394 0.451 0.700 0.658 0.745 0.907 0.960 0.803
I63_CRUJRA [-] 1.43 1.43 1.64 2.85 -0.0394 0.451 0.700 0.658 0.745 0.907 0.960 0.803
I65_CRUJRA [-] 1.43 1.43 1.64 2.85 -0.0394 0.451 0.700 0.658 0.745 0.907 0.960 0.803
I67_GSWP3 [-] 1.47 1.46 1.72 2.85 -0.00240 0.384 0.469 0.718 0.807 0.934 0.977 0.849
Download Data
Period Mean (original grids) [mm d-1]
Model Period Mean (intersection) [mm d-1]
Benchmark Period Mean (intersection) [mm d-1]
Model Period Mean (complement) [mm d-1]
Benchmark Period Mean (complement) [mm d-1]
Bias [mm d-1]
RMSE [mm d-1]
Phase Shift [months]
Bias Score [1]
RMSE Score [1]
Seasonal Cycle Score [1]
Spatial Distribution Score [1]
Overall Score [1]
Benchmark [-] 2.57
I62_CRUJRA [-] 2.15 2.15 2.54 2.81 -0.354 0.609 1.12 0.421 0.724 0.830 0.981 0.736
I63_CRUJRA [-] 2.15 2.15 2.54 2.81 -0.354 0.609 1.12 0.421 0.724 0.830 0.981 0.736
I65_CRUJRA [-] 2.15 2.15 2.54 2.81 -0.354 0.609 1.12 0.421 0.724 0.830 0.981 0.736
I67_GSWP3 [-] 2.32 2.34 2.57 2.53 -0.208 0.467 0.758 0.560 0.799 0.886 0.990 0.807
Download Data
Period Mean (original grids) [mm d-1]
Model Period Mean (intersection) [mm d-1]
Benchmark Period Mean (intersection) [mm d-1]
Model Period Mean (complement) [mm d-1]
Benchmark Period Mean (complement) [mm d-1]
Bias [mm d-1]
RMSE [mm d-1]
Phase Shift [months]
Bias Score [1]
RMSE Score [1]
Seasonal Cycle Score [1]
Spatial Distribution Score [1]
Overall Score [1]
Benchmark [-] 2.30
I62_CRUJRA [-] 2.25 2.24 2.25 3.28 0.0910 0.807 1.09 0.596 0.723 0.839 0.905 0.757
I63_CRUJRA [-] 2.25 2.24 2.25 3.28 0.0910 0.807 1.09 0.596 0.723 0.839 0.905 0.757
I65_CRUJRA [-] 2.25 2.24 2.25 3.28 0.0910 0.807 1.09 0.596 0.723 0.839 0.905 0.757
I67_GSWP3 [-] 2.09 2.09 2.29 3.44 -0.0502 0.545 0.863 0.645 0.769 0.873 0.983 0.808
Download Data
Period Mean (original grids) [mm d-1]
Model Period Mean (intersection) [mm d-1]
Benchmark Period Mean (intersection) [mm d-1]
Model Period Mean (complement) [mm d-1]
Benchmark Period Mean (complement) [mm d-1]
Bias [mm d-1]
RMSE [mm d-1]
Phase Shift [months]
Bias Score [1]
RMSE Score [1]
Seasonal Cycle Score [1]
Spatial Distribution Score [1]
Overall Score [1]
Benchmark [-] 0.449
I62_CRUJRA [-] 0.392 0.394 0.436 0.782 -0.0195 0.212 1.14 0.762 0.826 0.830 0.970 0.843
I63_CRUJRA [-] 0.392 0.394 0.436 0.782 -0.0195 0.212 1.14 0.762 0.826 0.830 0.970 0.843
I65_CRUJRA [-] 0.392 0.394 0.436 0.782 -0.0195 0.212 1.14 0.762 0.826 0.830 0.970 0.843
I67_GSWP3 [-] 0.350 0.353 0.445 0.744 -0.0570 0.208 0.866 0.747 0.837 0.873 0.976 0.854
Download Data
Period Mean (original grids) [mm d-1]
Model Period Mean (intersection) [mm d-1]
Benchmark Period Mean (intersection) [mm d-1]
Model Period Mean (complement) [mm d-1]
Benchmark Period Mean (complement) [mm d-1]
Bias [mm d-1]
RMSE [mm d-1]
Phase Shift [months]
Bias Score [1]
RMSE Score [1]
Seasonal Cycle Score [1]
Spatial Distribution Score [1]
Overall Score [1]
Benchmark [-] 1.25
I62_CRUJRA [-] 1.07 1.06 1.23 1.68 -0.162 0.328 0.410 0.650 0.738 0.959 0.975 0.812
I63_CRUJRA [-] 1.07 1.06 1.23 1.68 -0.162 0.328 0.410 0.650 0.738 0.959 0.975 0.812
I65_CRUJRA [-] 1.07 1.06 1.23 1.68 -0.162 0.328 0.410 0.650 0.738 0.959 0.975 0.812
I67_GSWP3 [-] 1.23 1.22 1.25 1.24 0.00396 0.326 0.369 0.666 0.770 0.962 0.950 0.824
Download Data
Period Mean (original grids) [mm d-1]
Model Period Mean (intersection) [mm d-1]
Benchmark Period Mean (intersection) [mm d-1]
Model Period Mean (complement) [mm d-1]
Benchmark Period Mean (complement) [mm d-1]
Bias [mm d-1]
RMSE [mm d-1]
Phase Shift [months]
Bias Score [1]
RMSE Score [1]
Seasonal Cycle Score [1]
Spatial Distribution Score [1]
Overall Score [1]
Benchmark [-] 3.20
I62_CRUJRA [-] 2.94 2.95 3.15 3.46 0.0367 1.07 0.979 0.540 0.648 0.856 0.967 0.732
I63_CRUJRA [-] 2.94 2.95 3.15 3.46 0.0367 1.07 0.979 0.540 0.648 0.856 0.967 0.732
I65_CRUJRA [-] 2.94 2.95 3.15 3.46 0.0367 1.07 0.979 0.540 0.648 0.856 0.967 0.732
I67_GSWP3 [-] 3.05 3.05 3.22 3.35 0.0827 0.905 0.749 0.611 0.721 0.894 0.977 0.785
Download Data
Period Mean (original grids) [mm d-1]
Model Period Mean (intersection) [mm d-1]
Benchmark Period Mean (intersection) [mm d-1]
Model Period Mean (complement) [mm d-1]
Benchmark Period Mean (complement) [mm d-1]
Bias [mm d-1]
RMSE [mm d-1]
Phase Shift [months]
Bias Score [1]
RMSE Score [1]
Seasonal Cycle Score [1]
Spatial Distribution Score [1]
Overall Score [1]
Benchmark [-] 3.30
I62_CRUJRA [-] 2.92 2.94 3.27 3.77 -0.284 0.451 0.969 0.584 0.810 0.860 0.996 0.812
I63_CRUJRA [-] 2.92 2.94 3.27 3.77 -0.284 0.451 0.969 0.584 0.810 0.860 0.996 0.812
I65_CRUJRA [-] 2.92 2.94 3.27 3.77 -0.284 0.451 0.969 0.584 0.810 0.860 0.996 0.812
I67_GSWP3 [-] 3.04 3.06 3.29 3.31 -0.155 0.351 0.872 0.715 0.835 0.871 0.998 0.851
Download Data
Period Mean (original grids) [mm d-1]
Model Period Mean (intersection) [mm d-1]
Benchmark Period Mean (intersection) [mm d-1]
Model Period Mean (complement) [mm d-1]
Benchmark Period Mean (complement) [mm d-1]
Bias [mm d-1]
RMSE [mm d-1]
Phase Shift [months]
Bias Score [1]
RMSE Score [1]
Seasonal Cycle Score [1]
Spatial Distribution Score [1]
Overall Score [1]
Benchmark [-] 2.42
I62_CRUJRA [-] 2.11 2.12 2.34 4.74 -0.0808 0.445 0.730 0.694 0.760 0.902 0.984 0.820
I63_CRUJRA [-] 2.11 2.12 2.34 4.74 -0.0808 0.445 0.730 0.694 0.760 0.902 0.984 0.820
I65_CRUJRA [-] 2.11 2.12 2.34 4.74 -0.0808 0.445 0.730 0.694 0.760 0.902 0.984 0.820
I67_GSWP3 [-] 2.18 2.18 2.43 4.29 -0.0485 0.386 0.601 0.728 0.809 0.917 0.985 0.850
Download Data
Period Mean (original grids) [mm d-1]
Model Period Mean (intersection) [mm d-1]
Benchmark Period Mean (intersection) [mm d-1]
Model Period Mean (complement) [mm d-1]
Benchmark Period Mean (complement) [mm d-1]
Bias [mm d-1]
RMSE [mm d-1]
Phase Shift [months]
Bias Score [1]
RMSE Score [1]
Seasonal Cycle Score [1]
Spatial Distribution Score [1]
Overall Score [1]
Benchmark [-] 1.44
I62_CRUJRA [-] 1.26 1.27 1.42 2.79 -0.0999 0.387 0.731 0.624 0.776 0.899 0.968 0.809
I63_CRUJRA [-] 1.26 1.27 1.42 2.79 -0.0999 0.387 0.731 0.624 0.776 0.899 0.968 0.809
I65_CRUJRA [-] 1.26 1.27 1.42 2.79 -0.0999 0.387 0.731 0.624 0.776 0.899 0.968 0.809
I67_GSWP3 [-] 1.28 1.30 1.43 1.93 -0.0676 0.313 0.627 0.701 0.812 0.909 0.983 0.843
Download Data
Period Mean (original grids) [mm d-1]
Model Period Mean (intersection) [mm d-1]
Benchmark Period Mean (intersection) [mm d-1]
Model Period Mean (complement) [mm d-1]
Benchmark Period Mean (complement) [mm d-1]
Bias [mm d-1]
RMSE [mm d-1]
Phase Shift [months]
Bias Score [1]
RMSE Score [1]
Seasonal Cycle Score [1]
Spatial Distribution Score [1]
Overall Score [1]
Benchmark [-] 6.23
I62_CRUJRA [-] 6.13 6.13 6.27 4.47 -0.107 1.28 0.738 0.629 0.721 0.919 0.979 0.794
I63_CRUJRA [-] 6.13 6.13 6.27 4.47 -0.107 1.28 0.738 0.629 0.721 0.919 0.979 0.794
I65_CRUJRA [-] 6.13 6.13 6.27 4.47 -0.107 1.28 0.738 0.629 0.721 0.919 0.979 0.794
I67_GSWP3 [-] 6.18 6.18 6.27 4.64 -0.105 1.06 0.531 0.667 0.773 0.943 0.979 0.827
Download Data
Period Mean (original grids) [mm d-1]
Model Period Mean (intersection) [mm d-1]
Benchmark Period Mean (intersection) [mm d-1]
Model Period Mean (complement) [mm d-1]
Benchmark Period Mean (complement) [mm d-1]
Bias [mm d-1]
RMSE [mm d-1]
Phase Shift [months]
Bias Score [1]
RMSE Score [1]
Seasonal Cycle Score [1]
Spatial Distribution Score [1]
Overall Score [1]
Benchmark [-] 3.47
I62_CRUJRA [-] 3.25 3.23 3.47 3.29 -0.216 0.668 0.607 0.683 0.788 0.927 0.990 0.835
I63_CRUJRA [-] 3.25 3.23 3.47 3.29 -0.216 0.668 0.607 0.683 0.788 0.927 0.990 0.835
I65_CRUJRA [-] 3.25 3.23 3.47 3.29 -0.216 0.668 0.607 0.683 0.788 0.927 0.990 0.835
I67_GSWP3 [-] 3.35 3.34 3.49 2.95 -0.138 0.529 0.535 0.744 0.825 0.935 0.996 0.865
Download Data
Period Mean (original grids) [mm d-1]
Model Period Mean (intersection) [mm d-1]
Benchmark Period Mean (intersection) [mm d-1]
Model Period Mean (complement) [mm d-1]
Benchmark Period Mean (complement) [mm d-1]
Bias [mm d-1]
RMSE [mm d-1]
Phase Shift [months]
Bias Score [1]
RMSE Score [1]
Seasonal Cycle Score [1]
Spatial Distribution Score [1]
Overall Score [1]
Benchmark [-] 1.76
I62_CRUJRA [-] 1.43 1.45 1.78 1.64 -0.202 1.03 0.952 0.278 0.555 0.863 0.794 0.609
I63_CRUJRA [-] 1.43 1.45 1.78 1.64 -0.202 1.03 0.952 0.278 0.555 0.863 0.794 0.609
I65_CRUJRA [-] 1.43 1.45 1.78 1.64 -0.202 1.03 0.952 0.278 0.555 0.863 0.794 0.609
I67_GSWP3 [-] 1.68 1.68 1.76 2.34 -0.0862 0.782 0.782 0.368 0.663 0.885 0.865 0.689

Temporally integrated period mean

BENCHMARK MEAN
Data not available
Data not available
MODEL MEAN
Data not available
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BIAS
Data not available
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BIAS SCORE
Data not available
Data not available
RMSE
Data not available
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RMSE SCORE
Data not available
Data not available
BENCHMARK MAX MONTH
Data not available
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MODEL MAX MONTH
Data not available
Data not available
DIFFERENCE IN MAX MONTH
Data not available
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SEASONAL CYCLE SCORE
Data not available
Data not available

SPATIAL TAYLOR DIAGRAM
Data not available
MODEL COLORS
Data not available

Spatially integrated regional mean

MODEL COLORS
Data not available
REGIONAL MEAN
Data not available
ANNUAL CYCLE
Data not available
MONTHLY ANOMALY
Data not available
ANNUAL CYCLE
Data not available

All Models

Benchmark
Data not available
Data not available
I62_CRUJRA
Data not available
Data not available
I63_CRUJRA
Data not available
Data not available
I65_CRUJRA
Data not available
Data not available
I67_GSWP3
Data not available
Data not available

Data Information

  Title:
GPCP Version 2.3 Combined Precipitation Dataset (Final)

  Version:
2.3

  Institutions:
NOAA/OAR/ESRL PSD, Boulder, Colorado, USA
ESSIC/CICS, University of Maryland, USA

  Source:
GPCC gauge analysis to bias correct satellite estimates over land and merge with satellite based on sampling

  History:
2019-04-18: downloaded source from http://www.esrl.noaa.gov/psd/data/gridded/data.gpcp.html
2019-05-09: converted to netCDF with https://github.com/mmu2019/Datasets/blob/master/read-pr-gpcp.py

  References:
Adler, R.F., G.J. Huffman, A. Chang, R. Ferraro, P. Xie, J. Janowiak, B. Rudolf, U. Schneider, S. Curtis, D. Bolvin, A. Gruber, J. Susskind, P. Arkin (2003), The Version 2 Global Precipitation Climatology Project (GPCP) Monthly Precipitation Analysis (1979 - Present), J. Hydrometeor., 4(6), 1147-1167
2} }

  Comments:
time_period: 1979-01 through 2018-12
original_temporal_resolution: monthly
original_spatial_resolution: 2.5x2.5 degree
original_units: mm/day
final_temporal_resolution: monthly
final_spatial_resolution: 0.5x0.5 degree
final_units: kg/m2/s

  Convention:
CF-1.7