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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 |
|---|
| 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%) | | |
