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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Hi, NCL talk forum:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I am using ESMF_regrid to regrid my modeled CO (dimentioned Lev(15)*Row(299)*Col(459)) to AIRS L2 swath locations (dimentioned 45*30). I attached my code test.ncl for the regridding and plotting. I found some of the regridded output are missing values. Then I plotted those missing value locations (black dots in the attached figure). The red dashed box defines my model domain. I understand when the satellite swath is out of the model domain, the regridded CO will be missing values since no model grids will correspond to those locations. But as you can see, some black dots are actually inside my model domain, especially the upper right ones, which are relatively far away from the edges of the model domain. In another words, the esmf regrid program can not regrid accurately for some of the swath locations that are inside the model domain. It doesn’t make sense to me. What is the reason?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>--------------------------------------<o:p></o:p></p><p class=MsoNormal>Lijun Diao<o:p></o:p></p><p class=MsoNormal>University of Houston<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>