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- the land sea-mask processing
- the default interpolation method
- the distance computation and selection of nearest points
HRES - O1280
Temperature at 2m has been interpolated from the O1280 target octahedral reduced Gaussian grid to regular lat-lon grids at different target resolutions using EMOSLIB and MIR.
- For the cases shown here, differences between MIR and EMOSLIB generally lie between +/-5K.
- In general, more than 99.55% of points differ by less than +/-0.5 K.
- The largest differences occur close to the coasts and in areas of steep orography where the gradient of the 2m temperature field changes most rapidly
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% 25% of the maximum absolute difference are indicated with red (EMOSLIB greater than MIR) and blue (EMOSLIB less than MIR) filled circles.
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Target resolution | Statistics of differences | Histogram of differences | Global | Europe |
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0.1x0.1 | Maximum difference = 4.757812 Minimum difference = -4.185547 Mean absolute difference = 0.011020 Median absolute difference = 0.001953 Standard deviation = 0.054195 RMS of differences = 0.054195 Percentage of points with absolute difference < 0.5 = 99.771% < 1.0 = 99.955% < 2.0 = 99.996% | -5.500000 5 : -4.500000 5 - 0 ( 0.000000%) -4.500000 5 : -3.500000 5 - 4 ( 0.000062%) -3.500000 5 : -2.500000 5 - 44 ( 0.000679%) -2.500000 5 : -1.500000 5 - 322 ( 0.004966%) -1.500000 5 : -0.500000 5 - 7168 ( 0.110556%) -0.500000 5 : 0.500000 5 - 6468824 ( 99.772102%) 0.500000 5 : 1.500000 5 - 6847 ( 0.105605%) 1.500000 5 : 2.500000 5 - 354 ( 0.005460%) 2.500000 5 : 3.500000 5 - 31 ( 0.000478%) 3.500000 5 : 4.500000 5 - 4 ( 0.000062%) 4.500000 5 : 5.500000 5 - 2 ( 0.000031%) | Image Added
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0.125x0.125 | Maximum difference = 5.131653 Minimum difference = -3.907410 Mean absolute difference = 0.011335 Median absolute difference = 0.001160 Standard deviation = 0.054557 RMS of differences = 0.054557 Percentage of points with absolute difference < 0.5 = 99.772% < 1.0 = 99.954% < 2.0 = 99.996% | -6.500000 5 : -5.500000 5 - 0 ( 0.000000%) -5.500000 5 : -4.500000 5 - 0 ( 0.000000%) -4.500000 5 : -3.500000 5 - 3 ( 0.000072%) -3.500000 5 : -2.500000 5 - 25 ( 0.000602%) -2.500000 5 : -1.500000 5 - 230 ( 0.005542%) -1.500000 5 : -0.500000 5 - 4543 ( 0.109468%) -0.500000 5 : 0.500000 5 - 4140621 ( 99.772077%) 0.500000 5 : 1.500000 5 - 4386 ( 0.105685%) 1.500000 5 : 2.500000 5 - 249 ( 0.006000%) 2.500000 5 : 3.500000 5 - 20 ( 0.000482%) 3.500000 5 : 4.500000 5 - 2 ( 0.000048%) 4.500000 5 : 5.500000 5 - 1 ( 0.000024%) 5.500000 5 : 6.500000 5 - 0 ( 0.000000%) | Image Added
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0.25x0.25 | Maximum difference = 3.029404 Minimum difference = -3.908096 Mean absolute difference = 0.011457 Median absolute difference = 0.001846 Standard deviation = 0.057023 RMS of differences = 0.057023 Percentage of points with absolute difference < 0.5 = 99.743% < 1.0 = 99.946% < 2.0 = 99.996% | -4.500000 5 : -3.500000 5 - 1 ( 0.000096%) -3.500000 5 : -2.500000 5 - 7 ( 0.000674%) -2.500000 5 : -1.500000 5 - 60 ( 0.005779%) -1.500000 5 : -0.500000 5 - 1293 ( 0.124538%) -0.500000 5 : 0.500000 5 - 1035573 ( 99.743123%) 0.500000 5 : 1.500000 5 - 1224 ( 0.117892%) 1.500000 5 : 2.500000 5 - 79 ( 0.007609%) 2.500000 5 : 3.500000 5 - 3 ( 0.000289%) 3.500000 5 : 4.500000 5 - 0 ( 0.000000%)
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0.5x0.5 | Maximum difference = 4.168945 Minimum difference = -3.477539 Mean absolute difference = 0.013174 Median absolute difference = 0.000977 Standard deviation = 0.066953 RMS of differences = 0.066953 Percentage of points with absolute difference < 0.5 = 99.645% < 1.0 = 99.920% < 2.0 = 99.990% | -5.500000 5 : -4.500000 5 - 0 ( 0.000000%) -4.500000 5 : -3.500000 5 - 0 ( 0.000000%) -3.500000 5 : -2.500000 5 - 4 ( 0.001539%) -2.500000 5 : -1.500000 5 - 23 ( 0.008849%) -1.500000 5 : -0.500000 5 - 434 ( 0.166974%) -0.500000 5 : 0.500000 5 - 258998 ( 99.645275%) 0.500000 5 : 1.500000 5 - 433 ( 0.166590%) 1.500000 5 : 2.500000 5 - 25 ( 0.009618%) 2.500000 5 : 3.500000 5 - 2 ( 0.000769%) 3.500000 5 : 4.500000 5 - 1 ( 0.000385%) 4.500000 5 : 5.500000 5 - 0 ( 0.000000%) | Image Added
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1.0x1.0 | Maximum difference = 2.676575 Minimum difference = -1.856628 Mean absolute difference = 0.013214 Median absolute difference = 0.001160 Standard deviation = 0.063501 RMS of differences = 0.063501 Percentage of points with absolute difference < 0.5 = 99.652% < 1.0 = 99.932% < 2.0 = 99.994% | -3.500000 5 : -2.500000 5 - 0 ( 0.000000%) -2.500000 5 : -1.500000 5 - 2 ( 0.003069%) -1.500000 5 : -0.500000 5 - 116 ( 0.178023%) -0.500000 5 : 0.500000 5 - 64933 ( 99.651627%) 0.500000 5 : 1.500000 5 - 104 ( 0.159607%) 1.500000 5 : 2.500000 5 - 4 ( 0.006139%) 2.500000 5 : 3.500000 5 - 1 ( 0.001535%) | Image Added
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