2009-12-18T12:00:00Z is universal (greenwich) time > Hello Ethan, > > Many thanks for the clarification. I have one final question/clarification. I > am still a little confused about the time zone. Let us say I am interested in > Temperature_surface over a period of time at 40 N & 75W (EST). And I get the > following data from your data base. > > date,lat[unit="degrees_north"],lon[unit="degrees_east"],Temperature_surface[unit="K"] > 2009-12-18T12:00:00Z,40.0,-75.0,266.8 > 2009-12-18T15:00:00Z,40.0,-75.0,271.24 > 2009-12-18T18:00:00Z,40.0,-75.0,274.6 > > Do the temperatures [266.8, 271.24 274.6] correspond to [7AM 10AM 1PM] EST or > do they correspond to [12PM 3PM 6PM] EST, respectively? > > Thanks > - Shiva > > -----Original Message----- > From: Unidata THREDDS Support [mailto:address@hidden > Sent: Thursday, December 17, 2009 6:50 PM > To: Kameswaran, Shivakumar UTRC > Cc: address@hidden > Subject: [THREDDS #LUC-457370]: Question on latitude for gridded data set > > Hi Shiva, > > > Many thanks for your response. So if the longitude goes from 0 to 360, > > what convention is followed to represent points east and west of the > > Greenwich meridian. Also, if I want the conditions at 75 W (longitude), > > should I specify -75 or should I specify it as (360-75)? I current > > specify it as -75 and I do get some numbers out of the database. > > So what does -75 correspond to? > > The longitude is in degrees east of the Greenwich meridian. So 1 is just east > of the meridian and 359 is just west. The prefered input for 75 W would be > 285. I'm not sure about what -75 returns. I'm guessing that gets converted to > 285 internally as well but I'm not absolutely sure. > > Ethan > > > Ticket Details > =================== > Ticket ID: LUC-457370 > Department: Support THREDDS > Priority: Normal > Status: Closed > > Ticket Details =================== Ticket ID: LUC-457370 Department: Support THREDDS Priority: Critical Status: Closed
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