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>From: address@hidden (aspweb) >Organization: UCAR/Unidata >Keywords: 200012081606.eB8G6Eo12910 >I'm plotting snow depth with the SNOW parm in sfmap: > >sfmap << EOF > AREA = garea > GAREA = ${garea} > SATFIL = > RADFIL = > SFPARM = snow > DATTIM = 1200 > SFFILE = /usr/local/ldm/data/surface/${date}_sao.gem > >etc... > >but my plot only has 3 or 4 stations, whereas I know that there is more >snowcover than that on the northern tier. Does the SNOW parm read the 4 >group in the SA obs? Does snow cover only get sent out at certain times >of the day by stations? Thanks. > >Chris > >=============================== >Ohio State ASP Web Staff > >Chris Hennon >address@hidden >=============================== > Chris, Yes, dcmetr decodes the 4/ group for snow (along with the SNINCR group as the parameter SNEW which isn't in the default metr.pack file, and the 933 group for WEQS). Also, this is a parameter that is most frequently reported at the 6 hour intervals (0, 6 12, 18Z), that is, at synoptic observation times. In the above, you don't show what "FILTER" is set to. Try setting FILTER=0 or FILTER=n. With this setting, at 12Z today, I see lost of snow reports in NY, OH, MI, IN, IL, WI, MN, SD, ND, MT, WA. You can verify what stations reported SNOW with SFLIST and set SFPARM=snow>0. Steve Chiswell