Versions Compared

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

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 target grid to regular lat-lon grids at different resolutions using EMOSLIB and 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 interpolation at the poles.


Target resolutionStatistics of differencesHistogram of differencesGlobalEurope
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%

-100.000000 : -90.000000 -          1 (  0.000015%)
  -90.000000 : -80.000000 -          0 (  0.000000%)
  -80.000000 : -70.000000 -91.375000 : -73.100000 -          1 (  0.000015%)
  -7370.100000 000000 : -5460.825000 000000 -          9 5 (  0.000139%000077%)
  -5460.825000 000000 : -3650.550000 000000 -         80 12 (  0.001234%000185%)
  -50.000000 : -40.000000 -         36 .550000 : -18.275000 -        996 (  0.000555%)
  -40.000000 : -30.000000 -        153 (  0.002360%)
  -30.000000 : -20.000000 -        638 (  0.015362%009840%)
  -1820.275000 :     000000 : -10.000000 -       7583 (  0.116957%)
  -10.000000 : 0.000000 -    3302198 3294855 ( 50.931550%818295%)
      0.000000 : 10.000000 -    3172050 ( 48.924209%)
  10.000000 : 20.000000 -       7478 (  0.115337%)
  20.000000 :    1830.275000 000000 -    3179303 ( 49.036076%)
 18.275000 :   36.550000 -        932         603 (  0.009300%)
  30.000000 : 40.000000 -        121 (  0.001866%)
  40.000000 : 50.000000 -         49 (  0.014375%000756%)
   6  50.550000 000000 :    5460.825000 -         72 000000 -         13 (  0.000201%)
  60.000000 : 70.000000 -          2 (  0.000031%)
  70.000000 : 80.000000 -          0 (  0.001110%000000%)
 54  80.825000 000000 :    7390.100000 000000 -          9 0 (  0.000139%000000%)
 73  90.100000 000000 :    91100.375000 000000 -          0 (  0.000000%)

Image RemovedImage Added

0.125x0.125

Maximum difference = 92.937500
Minimum difference = -80.062500
Average difference = -0.000149
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%

-100.000000 : -90.000000 -          0 (  0.000000%)
  -90.000000 : -80.000000 -92.937500 : -74.350000 -          1 (  0.000024%)
  -80.000000 : -70.000000 -          3 (  0.000072%)
-74.350000 : -55.762500 -         13   -70.000000 : -60.000000 -         10 (  0.000241%)
  -60.000000 : -50.000000 -          7 (  0.000169%)
  -50.000000 : -40.000000 -         26 (  0.000313%000626%)
  -5540.762500 000000 : -3730.175000 000000 -         49 84 (  0.001181%002024%)
  -3730.175000 000000 : -1820.587500 000000 -        563 387 (  0.009325%)
  -20.000000 : -10.000000 -       5446 (  0.013566%131226%)
  -1810.587500 000000 :      0.000000 -    2867529 2862191 ( 6968.095752%967128%)
          0.000000 :    1810.587500 000000 -    1281313 1276136 ( 30.874417%749672%)
 18   10.587500 :   37.175000 -        556 000000 : 20.000000 -       5303 (  0.127781%)
   20.000000 : 30.000000 -        362 (  0.013397%008723%)
 37   30.175000 :  55.762500 -         46 000000 : 40.000000 -         81 (  0.001952%)
   40.000000 : 50.000000 -         28 (  0.000675%)
    50.000000 : 60.000000 -          9 (  0.000217%)
    60.000000 : 70.000000 -          2 (  0.001108%000048%)
 55    70.762500 :  74.350000 -          6 000000 : 80.000000 -          3 (  0.000072%)
    80.000000 : 90.000000 -          0 (  0.000145%000000%)
  74  90.350000 000000 : 92100.937500 000000 -          4 1 (  0.000096%000024%)

Image RemovedImage 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%

-100.000000 : -90.000000 -          0 (  0.000000%)
  -90.000000 : -80.000000 -          0 (  0.000000%)
  -80.000000 : -70.000000 -92.875000 : -74.300000 -          0 (  0.000000%)
  -70.000000 : -60.000000 -          4 (  0.000385%)
  -7460.300000 000000 : -5550.725000 000000 -          4 (  0.000385%)
-55.725000 : -37.150000 -         12   -50.000000 : -40.000000 -          6 (  0.000578%)
  -40.000000 : -30.000000 -         15 (  0.001156%001445%)
  -3730.150000 000000 : -1820.575000 000000 -        150 101 (  0.009728%)
  -20.000000 : -10.000000 -       2043 (  0.014448%196775%)
  -1810.575000 000000 : 0.000000 -     529369 527362 ( 50.987151%793843%)
          0.000000 : 1810.575000 000000 -     508549 506516 ( 48.981835%)
18.575000 : 37.150000 -        141 786022%)
   10.000000 : 20.000000 -       2066 (  0.198991%)
   20.000000 : 30.000000 -         93 (  0.013581%008957%)
37   30.150000 000000 : 5540.725000 -         12 000000 -         19 (  0.001830%)
  40.000000 : 50.000000 -          6 (  0.000578%)
  50.000000 : 60.000000 -          2 (  0.000193%)
  60.000000 : 70.000000 -          1 (  0.001156%000096%)
55  70.725000 000000 : 7480.300000 000000 -          1 (  0.000096%)
  80.000000 : 90.000000 -          0 (  0.000000%)
74  90.300000 000000 : 92100.875000 000000 -          2 1 (  0.000193%000096%)

Image RemovedImage 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%

-70.000000 : -60.000000 -          2 (  0.000769%)
-60.000000 : -50.000000 -          1 (  0.000385%)
-6150.000000 : -4840.800000 000000 -          3 1 (  0.001154%000385%)
-4840.800000 000000 : -3630.600000 000000 -          2 3 (  0.000769%001154%)
-3630.600000 000000 : -2420.400000 000000 -         13 21 (  0.005002%008079%)
-2420.400000 000000 : -1210.200000 000000 -        818 855 (  0.314712%328947%)
-1210.200000 000000 : 0.000000 -      41933 41886 ( 16.133041%114958%)
        0.000000 : 1210.200000 000000 -     216306 216238 ( 83.220222%194060%)
12 10.200000 000000 : 2420.400000 000000 -        825 871 (  0.317405%335103%)
24 20.400000 000000 : 3630.600000 000000 -         15 33 (  0.012696%)
 30.000000 : 40.000000 -          6 (  0.005771%002308%) 
36 40.600000 000000 : 4850.800000 000000 -          4 2 (  0.001539%000769%)
48  50.800000 000000 : 6160.000000 -          1 (  0.000385%)
  60.000000 : 70.000000 -          0 (  0.000000%)

Image RemovedImage Added

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%

-70.000000 : -60.000000 -60.812500 : -48.650000 -          1 (  0.001535%)
-48.650000 : -36.487500 -60.000000 : -50.000000 -          0 (  0.000000%)
-50.000000 : -40.000000 -          0 (  0.000000%)
-3640.487500 000000 : -2430.325000 000000 -          0 (  0.000000%)
-24.325000 : -12.162500 -        382 30.000000 : -20.000000 -          2 (  0.003069%)
-20.000000 : -10.000000 -        389 (  0.586249%596992%)
-1210.162500 000000 : 0.000000 -      44628 44619 ( 68.489871%476059%)
    0.000000 : 1210.162500 000000 -      19754 19737 ( 30.316145%290055%)
  12 10.162500 000000 : 2420.325000 000000 -        388 401 (  0.595457%615408%)
  24.325000 : 36.487500 -          6  20.000000 : 30.000000 -          9 (  0.013812%)
 30.000000 : 40.000000 -          1 (  0.009208%001535%)
  36 40.487500 000000 : 4850.650000 000000 -          0 (  0.000000%)
 48 50.650000 000000 : 60.812500 000000 -          1 (  0.001535%)
 60.000000 : 70.000000 -          0 (  0.000000%)

Image AddedImage Removed