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- EMOSLIB does not apply any land sea-mask processing when interpolating the mean sea-level pressure so differences arise only from the different interpolation method and selection of nearest points used by MIR
- The differences for more than 99% of grid points are less than 20Pa
- The largest differences occur in regions of high orography with the field gradient changes most rapidly.
- Larger differences are also seen in the lower resolution target grids (0.5ºx0.5º and 1.0ºx1.0º) at the polar latitudes (90ºN and 90ºS) which arise from the different handling of the poles.
Target resolution | Statistics of differences | Histogram of differences | Global | Europe |
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0.1x0.1 | Maximum difference = 68.125000 Minimum difference = -91.375000 Average difference = -0.000294 Mean difference = -0.000294 Median difference = -0.125000 Standard deviation = 1.072257 Variance = 1.149734 RMS of differences = 1.072257 | -91.375000 : -73.100000 - 1 ( 0.000015%) -73.100000 : -54.825000 - 9 ( 0.000139%) -54.825000 : -36.550000 - 80 ( 0.001234%) -36.550000 : -18.275000 - 996 ( 0.015362%) -18.275000 : 0.000000 - 3302198 ( 50.931550%) 0.000000 : 18.275000 - 3179303 ( 49.036076%) 18.275000 : 36.550000 - 932 ( 0.014375%) 6.550000 : 54.825000 - 72 ( 0.001110%) 54.825000 : 73.100000 - 9 ( 0.000139%) 73.100000 : 91.375000 - 0 ( 0.000000%) | | |
0.125x0.125 | Maximum difference = 92.937500 Minimum difference = -80.062500 Average difference = -0.000149 Mean difference = -0.000149 Median difference = -0.062500 Standard deviation = 1.112258 Variance = 1.237119 RMS of differences = 1.112258 | -92.937500 : -74.350000 - 1 ( 0.000024%) -74.350000 : -55.762500 - 13 ( 0.000313%) -55.762500 : -37.175000 - 49 ( 0.001181%) -37.175000 : -18.587500 - 563 ( 0.013566%) -18.587500 : 0.000000 - 2867529 ( 69.095752%) 0.000000 : 18.587500 - 1281313 ( 30.874417%) 18.587500 : 37.175000 - 556 ( 0.013397%) 37.175000 : 55.762500 - 46 ( 0.001108%) 55.762500 : 74.350000 - 6 ( 0.000145%) 74.350000 : 92.937500 - 4 ( 0.000096%) | | |
0.25x0.25 | Maximum difference = 92.875000 Minimum difference = -61.875000 Average difference = 0.000752 Mean difference = 0.000752 Median difference = -0.125000 Standard deviation = 1.266861 Variance = 1.604937 RMS of differences = 1.266861 | -92.875000 : -74.300000 - 0 ( 0.000000%) -74.300000 : -55.725000 - 4 ( 0.000385%) -55.725000 : -37.150000 - 12 ( 0.001156%) -37.150000 : -18.575000 - 150 ( 0.014448%) -18.575000 : 0.000000 - 529369 ( 50.987151%) 0.000000 : 18.575000 - 508549 ( 48.981835%) 18.575000 : 37.150000 - 141 ( 0.013581%) 37.150000 : 55.725000 - 12 ( 0.001156%) 55.725000 : 74.300000 - 1 ( 0.000096%) 74.300000 : 92.875000 - 2 ( 0.000193%) | | |
0.5x0.5 | Maximum difference = 51.000000 Minimum difference = -61.000000 Average difference = 0.004363 Mean difference = 0.004363 Median difference = 0.000000 Standard deviation = 1.523147 Variance = 2.319977 RMS of differences = 1.523153 | -61.000000 : -48.800000 - 3 ( 0.001154%) -48.800000 : -36.600000 - 2 ( 0.000769%) -36.600000 : -24.400000 - 13 ( 0.005002%) -24.400000 : -12.200000 - 818 ( 0.314712%) -12.200000 : 0.000000 - 41933 ( 16.133041%) 0.000000 : 12.200000 - 216306 ( 83.220222%) 12.200000 : 24.400000 - 825 ( 0.317405%) 24.400000 : 36.600000 - 15 ( 0.005771%) 36.600000 : 48.800000 - 4 ( 0.001539%) 48.800000 : 61.000000 - 1 ( 0.000385%) | | |
1.0x1.0 | Maximum difference = 50.937500 Minimum difference = -60.812500 Average difference = 0.012001 Mean difference = 0.012001 Median difference = -0.062500 Standard deviation = 1.932739 Variance = 3.735481 RMS of differences = 1.932777 | -60.812500 : -48.650000 - 1 ( 0.001535%) -48.650000 : -36.487500 - 0 ( 0.000000%) -36.487500 : -24.325000 - 0 ( 0.000000%) -24.325000 : -12.162500 - 382 ( 0.586249%) -12.162500 : 0.000000 - 44628 ( 68.489871%) 0.000000 : 12.162500 - 19754 ( 30.316145%) 12.162500 : 24.325000 - 388 ( 0.595457%) 24.325000 : 36.487500 - 6 ( 0.009208%) 36.487500 : 48.650000 - 0 ( 0.000000%) 48.650000 : 60.812500 - 1 ( 0.001535%) | | |