Interpolation of total precipitation is affected by the changes to:
- the land sea-mask processing
- the default interpolation method
- the distance computation and selection of nearest points
- the change to the precipitation thresholds
HRES - O1280
Total precipitation for a 24 hour period has been interpolated from the O1280 target grid to regular lat-lon grids at different resolutions using EMOSLIB and MIR.
- For the cases shown here, differences between MIR and EMOSLIB are generally less than +/- 25mm
- In general, more than 99.5% of points differ by less than 0.5mm
- The largest differences occur close to the coasts and in areas where the gradient of the field changes most rapidly
The plots show the differences with the contours chosen on a logarithmic scale to enhance the smaller differences. Grid points where the absolute difference is greater than 25% 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 = 19.104004 Percentage of points with absolute difference < 0.10 = 96.346% | -25.0 :-20.0 - 1 ( 0.000015%) | ||
0.125x0.125 | Maximum difference = 10.871887 Percentage of points with absolute difference < 0.10 = 96.319% | -25.0 :-20.0 - 1 ( 0.000024%) | ||
0.25x0.25 | Maximum difference = 10.833740 Percentage of points with absolute difference < 0.10 = 96.313% | -25.0 :-20.0 - 1 ( 0.000096%) | ||
0.5x0.5 | Maximum difference = 11.169434 Percentage of points with absolute difference < 0.10 = 96.267% | -15.0 :-10.0 - 1 ( 0.000385% | ||
1.0x1.0 | Maximum difference = 8.422852 Percentage of points with absolute difference < 0.10 = 96.466% | -15.0 :-10.0 - 1 ( 0.001535%) |