<DIV>Hi, </DIV> <DIV>you can find all ERA-40 <STRONG><FONT size=3>Parameters and units in this web</FONT></STRONG> </DIV> <DIV> </DIV> <DIV><A href="http://badc.nerc.ac.uk/data/ecmwf-e40/file_naming.html">http://badc.nerc.ac.uk/data/ecmwf-e40/file_naming.html</A><BR><BR><B><I>sajjad saeed <sajjad_met@HOTMAIL.COM></I></B> wrote:</DIV> <BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">Dear all,<BR><BR>Can some one tell me what are the units of precipitation, u, v wind,<BR>temperature etc in the reanalysis ERA 40 datasets of ECMWF. From where we<BR>can find the units of different variables available in ERA 40 datasets.<BR><BR>Thanyou in advance for your information.<BR><BR><BR>Sajjad Saeed<BR>...........................................................<BR>Meteorologist,<BR>Pakistan Meteorological Department (PMD),<BR>P.O.Box 1214, Sector H-8/2, Islamabad, Pakistan.<BR><BR>Research Fellow<BR>Global Change Impact
Studies Centre (GCISC),<BR>First Floor, Saudi Pak Tower, Blue Area, Islamabad, Pakistan.<BR>Ph: +92-51-9219785, Fax: +92-51-9219787<BR>Mob:+92-334-5419962<BR>Email: sajjad_met@hotmail.com. sajjad2pk2@yahoo.com<BR>sajjad.saeed@gcisc.org.pk<BR><BR><BR><BR><BR><BR>>From: Suvarna Fadnavis <SUVARNA@TROPMET.RES.IN><BR>>Reply-To: GRADSUSR@LIST.CINECA.IT<BR>>To: GRADSUSR@LIST.CINECA.IT<BR>>Subject: Re: contour plot for diff latitudinal belts<BR>>Date: Wed, 28 Jun 2006 07:03:35 +1200<BR>><BR>>Dear Dr. ARINDAM CHAKRABORTY,<BR>> Thank you for your help in plotting contour in proper oredr( x,y, z and<BR>>t).<BR>> with best regards<BR>> Suvarna<BR>>On Fri, 23 Jun 2006 22:17:34 -0400, Arindam Chakraborty wrote<BR>> > hi Suvarna,<BR>> > when grads reads a data file, (by default) the different<BR>> > dimensions are read in this order: x, y, z, variable, t;<BR>> > Means x (longitude) varies fastest, and then y (latitude) and so
on.<BR>> > (Although there can be variations of this, see<BR>> > http://grads.iges.org/grads/gadoc/descriptorfile.html#VARS for<BR>> > 'non-standard binaries' for details. But for your control file the<BR>> > standard rule applies).<BR>> > Now, one of your control files has y and z, for which first 8<BR>> > data values in the file will be read as different latitudes at the<BR>> > first level, and so on. For another control file, which has z and t,<BR>> > the first 12 data values will be taken as different levels at the<BR>> > first latitude (alias time here), and so on for the rest of<BR>> > the data. This is the reason you get different results for those two<BR>> > control files.<BR>> > How to write the control file is dependent on how you've<BR>> > written down the data file. It is always a good idea to write the data<BR>> > in the default order of grads if you plan to use it in grads
later on.<BR>> > In your case, you need to write y as the faster varying dimension<BR>> > than z in your output data file. Then use the control file which has y<BR>> > and z.<BR>> > Please also set the lat levels as 35, 25, ..., 5, -5, ..., 35<BR>> > (the centers of the bands of average), that's a better way of<BR>> > representation.<BR>> ><BR>> > ----------------------------<BR>> > ARINDAM CHAKRABORTY<BR>> > Department of Meteorology<BR>> > Florida State University<BR>> > Tallahassee, FL-32306, USA<BR>> > Tel: +001-850-6443524 (Off)<BR>> > +001-850-5758550 (Res)<BR>> > Fax: +001-850-6449642<BR>> > ____________________________<BR>> ><BR>> > On Sat, 24 Jun 2006, Suvarna Fadnavis wrote:<BR>> ><BR>> > > Dear Dr. Chakraborty,<BR>> > > I am trying to plot (Contor) QBO values obtaied at 8<BR>>latitudinal belts<BR>>(40-<BR>> > > 30,
30-20, 20-10, 0-10 10-0 10-20, 20-30, 30-40). I want to plot QBO<BR>>values by<BR>>taking<BR>> > > x axis as latitude and y axais as pressure levels. I tried to plot it<BR>>by taking<BR>> > > (1) x-axis as time (t=8) and y -axis as pressure<BR>> > > (2) x-axis as latitude and y -axis as pressure by defining ydef 8<BR>>levels -40 -30 -<BR>>20 -<BR>> > > 10 10 20 30 40<BR>> > > I should get the same structure but I get two different<BR>>structure.<BR>>Please<BR>> > > guide me which is correct and what is the reason for difference. I am<BR>>attaching ctl<BR>>and<BR>> > > gs and data file for your kinf perusal.<BR>> > > suvarna<BR>><BR>><BR>>With best regards<BR>> Suvarna Fadanvis<BR>>Scientist –B<BR>>Indian Institute Of Tropical Meteorology<BR>>DR. Homi Bhabha road, Pashan, Pune, India<BR>>Ph. No
25893600<BR><BR>_________________________________________________________________<BR>Express yourself instantly with MSN Messenger! Download today it's FREE!<BR>http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/<BR></BLOCKQUOTE><BR><BR><BR><DIV align=center><EM><STRONG><FONT color=#1b2c48>Kind Regards<BR>Naser Sarhan<BR>School of Environmental Sciences<BR>University of East Anglia<BR>Norwich NR4 7TJ<BR></FONT></STRONG><BR></EM><BR><BR><BR><BR><BR><BR><BR><BR><BR><BR></DIV><p> 
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