<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman, new york, times, serif;font-size:12pt"><DIV>Hi All,</DIV>
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<DIV>Am wondering about this situation where in GrADS, I had choose ZTYPE=1 and the variable is prs for the surface pressure, while in RIP am using prs as the variable (not sfc - due to better output than sfc). The problem is why the output from these two post processing giving me a differ output? for instance RIP showed overestimated and GrADS was underestimated from the observed data of surface pressure. Any thoughts about this? Please and many thanks in advance.</DIV>
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<DIV>Regards,<BR></DIV></div><br>
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