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remapcon and remapcon2

Added by Rob Nicholas almost 15 years ago

Would someone be willing to explain the difference between the 'remapcon' and 'remapcon2' operators? What is the difference between a first-order and second-order conservative remapping?

Thanks,
Rob


Replies (1)

RE: remapcon and remapcon2 - Added by Uwe Schulzweida almost 15 years ago

Hi Rob,
The second-order conservative remapping consider also the gradients in lon and lat direction.

First-order conservative remapping:

for ( n = 0; n < num_links; n++ )
   dst_array[dst_addr[n]] += src_array[src_addr[n]]*weights[n];

Second-order conservative remapping:
for ( n = 0; n < num_links; n++ )
   dst_array[dst_addr[n]] += src_array[src_addr[n]]*weights[n] +
                             src_grad_lon[src_addr[n]]*weights_lon[n] +
                             src_grad_lat[src_addr[n]]*weights_lat[n];

Best Regards,
Uwe

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