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This is demonstrated in the figures below for the LSM and SST from ERA-Interim the HRES O1280 grid interpolated to a 0.75x05x0.75 5 regular lat-lon grid. The figure on the left shows the results using EMOSLIB with the default (bilinear) interpolation method and that on the right those using a nearest neighbour method for both SST and LSM.
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LSM and SST from HRES (O1280) both ERA Interim (N128) interpolated with EMOSLIB to a 0.75x05x0.75 5 regular lat-lon grid using the default interpolation method (bilinear) and land-sea mask processing
Globally, in total, there are:
| ERA Interim (N128) LSM and SST from HRES (O1280) both interpolated with EMOSLIB to a 0.75x05x0.75 5 regular lat-lon grid using the nearest neighbour and default land-sea mask processing
Globally, in total, there are:
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Repeating the interpolation with MIR produces the following results, again with the figure on the left showing the results with the default (linear) interpolation method and that on the right those using a nearest neighbour method.
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LSM and SST from HRES (O1280) both ERA Interim (N128) interpolated with MIR to a 0.75x05x0.75 5 regular lat-lon grid using the default interpolation method (linear) and no land-sea mask processing
Globally, in total, there are:
| ERA Interim (N128) LSM and SST from HRES (O1280) both interpolated with MIR to a 0.75x05x0.75 5 regular lat-lon grid using the nearest-neighbour method (linear) method and no land-sea mask processing
Globally, in total, there are:
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Using the nearest neighbour (or nearest LSM) interpolation method for both fields with MIR produces a sea-surface temperature field consistent with the land-sea mask. |