HRES O1280
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
HRES O1280
Mean sea-level pressure has been interpolated from the O1280 octahedral reduced Gaussian grid to regular lat-lon grids at different target resolutions using EMOSLIB and MIR.
- The differences for more than 99% of grid points are less than 20Pa and in the cases presented here all differences are less than 1 hPa.
- 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 interpolation at the poles.
The plots show the differences with the contours chosen on a logarithmic scale to enhance the smaller differences. Differences smaller than 0.1% of the field range are not shown. Grid points where the absolute difference is greater than 50% of the maximum absolute difference are indicated with red (EMOSLIB greater than MIR) and blue (EMOSLIB less than MIR) filled circles.
| 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 Mean absolute difference = - 0.000294312304
Median absolute difference = - 0.125000
Standard deviation = 1.072257
Variance RMS of differences = 1.149734072257RMS of differences = 1.072257 Percentage of points with absolute difference < 1.0 = 95.306%
< 2.0 = 97.828%
< 10.0 = 99.743% | -100.0 : -90.0 - 1 ( 0.000015%)
-90.0 : -80.0 - 0 ( 0.000000%)
-80.0 : -70.0 -91.375000 : -73.100000 - 1 ( 0.000015%)
-7370.100000 0 : -5460.825000 0 - 9 5 ( 0.000139%000077%)
-5460.825000 0 : -3650.550000 0 - 80 12 ( 0.001234%000185%)
-50.0 : -40.0 - 36 .550000 : -18.275000 - 996 ( 0.000555%)
-40.0 : -30.0 - 153 ( 0.002360%)
-30.0 : -20.0 - 638 ( 0.015362%009840%)
-1820.275000 : 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 : -10.0 - 7583 ( 0.116957%)
-10.0 : 0.0 - 3294855 ( 50.818295%)
0.0 : 10.0 - 3172050 ( 48.924209%)
10.0 : 20.0 - 7478 ( 0.115337%)
20.0 : 30.0 - 603 ( 0.009300%)
30.0 : 40.0 - 121 ( 0.001866%)
40.0 : 50.0 - 49 ( 0.000756%)
50.0 : 60.0 - 13 ( 0.000201%)
60.0 : 70.0 - 2 ( 0.000031%)
70.0 : 80.0 - 0 ( 0.000000%)
80.0 : 90.0 - 0 ( 0.000000%)
90.0 : 100.0 - 0 ( 0.000000%) |  Image Removed Image Added
| |
| 0.125x0.125 | Maximum difference = 92.937500
Minimum difference = -80.062500
Average difference = -0.000149
Mean Mean absolute difference = - 0.000149297040
Median absolute difference = - 0.062500
Standard deviation = 1.112258
Variance RMS of differences = 1.237119112258RMS of differences = 1.112258 Percentage of points with absolute difference < 1.0 = 95.244%
< 2.0 = 97.784%
< 10.0 = 99.717% | -100.0 : -90.0 - 0 ( 0.000000%)
-90.0 : -80.0 -92.937500 : -74.350000 - 1 ( 0.000024%)
-80.0 : -70.0 - 3 ( 0.000072%)
-70.0 : -60.0 - 10 ( 0.000241%)
-74.350000 : -55.762500 - 13 -60.0 : -50.0 - 7 ( 0.000169%)
-50.0 : -40.0 - 26 ( 0.000313%000626%)
-5540.762500 0 : -3730.175000 0 - 49 84 ( 0.001181%002024%)
-3730.175000 0 : -1820.587500 0 - 563 387 ( 0.009325%)
-20.0 : -10.0 - 5446 ( 0.013566%131226%)
-1810.587500 0 : 0.000000 0 - 2867529 2862191 ( 6968.095752%967128%)
0.000000 0 : 1810.587500 0 - 1281313 1276136 ( 30.874417%749672%)
18 10.587500 : 37.175000 - 556 0 : 20.0 - 5303 ( 0.127781%)
20.0 : 30.0 - 362 ( 0.013397%008723%)
37 30.175000 : 55.762500 - 46 0 : 40.0 - 81 ( 0.001952%)
40.0 : 50.0 - 28 ( 0.000675%)
50.0 : 60.0 - 9 ( 0.000217%)
60.0 : 70.0 - 2 ( 0.001108%000048%)
55 70.762500 : 74.350000 - 6 0 : 80.0 - 3 ( 0.000072%)
80.0 : 90.0 - 0 ( 0.000145%000000%)
74 90.350000 0 : 92100.937500 0 - 4 1 ( 0.000096%000024%) |  Image Removed Image Added
| |
| 0.25x0.25 | Maximum difference = 92.875000
Minimum difference = -61.875000
Average difference = 0.000752
Mean absolute difference = 0.000752338583
Median absolute difference = - 0.125000
Standard deviation = 1.266861
Variance RMS of differences = 1.604937266861RMS of differences = 1.266861 Percentage of points with absolute difference < 1.0 = 95.149%
< 2.0 = 97.663%
< 10.0 = 99.580% | -100.0 : -90.0 - 0 ( 0.000000%)
-90.0 : -80.0 - 0 ( 0.000000%)
-80.0 : -70.0 -92.875000 : -74.300000 - 0 ( 0.000000%)
-70.0 : -60.0 - 4 ( 0.000385%)
-7460.300000 0 : -5550.725000 0 - 4 ( 0.000385%)
-50.0 : -40.0 - 6 ( 0.000578%)
-5540.725000 0 : -3730.150000 0 - 12 15 ( 0.001156%001445%)
-3730.150000 0 : -1820.575000 0 - 150 101 ( 0.009728%)
-20.0 : -10.0 - 2043 ( 0.014448%196775%)
-1810.575000 0 : 0.000000 0 - 529369 527362 ( 50.987151%793843%)
0.000000 0 : 1810.575000 0 - 508549 506516 ( 48.981835%)
18.575000 : 37.150000 - 141 .786022%)
10.0 : 20.0 - 2066 ( 0.198991%)
20.0 : 30.0 - 93 ( 0.013581%008957%)
37 30.150000 0 : 5540.725000 - 12 0 - 19 ( 0.001830%)
40.0 : 50.0 - 6 ( 0.000578%)
50.0 : 60.0 - 2 ( 0.000193%)
60.0 : 70.0 - 1 ( 0.001156%000096%)
55 70.725000 0 : 7480.300000 0 - 1 ( 0.000096%)
74.300000 : 92.875000 - 2 80.0 : 90.0 - 0 ( 0.000000%)
90.0 : 100.0 - 1 ( 0.000193%000096%) |  Image Removed Image Added
| |
| 0.5x0.5 | Maximum difference = 51.000000
Minimum difference = -61.000000
Average difference = 0.004363
Mean absolute difference = 0.004363309541
Median absolute difference = 0.000000
Standard deviation = 1.523147
Variance = 2.319977
RMS of differences = 1.523153 Percentage of points with absolute difference < 1.0 = 94.304%
< 2.0 = 97.268%
< 10.0 = 99.306% | -70.0 : -60.0 - 2 ( 0.000769%)
-60.0 : -50.0 - 1 ( 0.000385%)
-6150.000000 0 : -4840.800000 0 - 3 1 ( 0.001154%000385%)
-4840.800000 0 : -3630.600000 0 - 2 3 ( 0.000769%001154%)
-3630.600000 0 : -2420.400000 0 - 13 21 ( 0.005002%008079%)
-2420.400000 0 : -1210.200000 0 - 818 855 ( 0.314712%328947%)
-1210.200000 0 : 0.000000 0 - 41933 41886 ( 16.133041%114958%)
0.000000 0 : 1210.200000 0 - 216306 216238 ( 83.220222%194060%)
12 10.200000 0 : 2420.400000 0 - 825 871 ( 0.317405%335103%)
24 20.400000 0 : 3630.600000 0 - 15 33 ( 0.012696%)
30.0 : 40.0 - 6 ( 0.005771%002308%)
36 40.600000 0 : 4850.800000 0 - 4 2 ( 0.001539%000769%)
48 50.800000 0 : 6160.000000 0 - 1 ( 0.000385%)
60.0 : 70.0 - 0 ( 0.000000%) |  Image Added Image Removed
| |
| 1.0x1.0 | Maximum difference = 50.937500
Minimum difference = -60.812500
Average difference = 0.012001
Mean absolute difference = 0.012001437874
Median absolute difference = - 0.062500
Standard deviation = 1.932739
Variance = 3.735481
RMS of differences = 1.932777 Percentage of points with absolute difference < 1.0 = 94.672%
< 2.0 = 96.980%
< 10.0 = 98.766% | -70.0 : -60.0 -60.812500 : -48.650000 - 1 ( 0.001535%)
-48.650000 : -36.487500 -60.0 : -50.0 - 0 ( 0.000000%)
-50.0 : -40.0 - 0 ( 0.000000%)
-3640.487500 0 : -2430.325000 0 - 0 ( 0.000000%)
-24.325000 : -12.162500 - 382 30.0 : -20.0 - 2 ( 0.003069%)
-20.0 : -10.0 - 389 ( 0.586249%596992%)
-1210.162500 0 : 0.000000 0 - 44628 44619 ( 68.489871%476059%)
0.000000 0 : 1210.162500 0 - 19754 19737 ( 30.316145%290055%)
12 10.162500 0 : 2420.325000 0 - 388 401 ( 0.595457%615408%)
24.325000 : 36.487500 - 6 20.0 : 30.0 - 9 ( 0.013812%)
30.0 : 40.0 - 1 ( 0.009208%001535%)
36 40.487500 0 : 4850.650000 0 - 0 ( 0.000000%)
48 50.650000 0 : 60.812500 0 - 1 ( 0.001535%)
60.0 : 70.0 - 0 ( 0.000000%) |  Image Removed Image Added
| |
