Gridding Issues of NPOL Data

Zebra vs CIDD - CIDD image (left) shows radar location correctly relative to data while Zebra image (right) shows offset between data and radar location



Zebra vs CIDD - CIDD image (left) shows radar location correctly relative to data while Zebra image (right) shows offset between data and radar location



20151114 - NPOL vs GPM

Comparison of polar NPOL rhi data (top), interpolated GPM Ku data (middle) and interpolated GPM Ka data (bottom) for two different cross-sections. Note attenuation and lower sensitivity of GPM Ku data relative to NPOL and of GPM Ka data relative to GPM Ku data. This holds true for all comparisons below.



20151117 - NPOL vs GPM

This distinct rainband moves very rapidly. Unless the GPM and NPOL data are from the exact same time, there will be an offset



Comparison of polar NPOL rhi data (top), interpolated GPM Ku data (middle) and interpolated GPM Ka data (bottom). Note offset of GPM data relative to NPOL. GPM time is later than NPOL in both cases and rainband has moved closer to NPOL radar (from ~66 km to ~59 km).



20151211 - NPOL vs GPM

Comparison of polar NPOL rhi data (top), interpolated GPM Ku data (middle) and interpolated GPM Ka data (bottom) for two different cross-sections.



Comparison of interpolated GPM Ku data (top) and interpolated GPM Ka data (bottom) for several xsects.

20151114




20151117




20151203




20151208




20160210




20160310




20160321