<DIV> <div class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">u 21 99 u wind (m/s) <BR>v 21 99 v wind (m/s) <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN></div> <div class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">z 21 99 geopot height (m**2/s**2) you have to divide by 10 when drawing z to be m/s**2<o:p></o:p></SPAN></div> <div class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">t 21 99 temperature (K) <o:p></o:p></SPAN></div></DIV> <DIV><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 Bernd Becker,<BR><BR>The units are not given on that page and on the related links. Can you tell<BR>me what is the unit of precipitation in ERA 40 datasets. Is precipitation<BR>expressed in mm/day or cm/day etc for the daily data? Likewise what are the<BR>units of U and V components of wind, Is it expressed in m/see or cm/see etc.<BR>Where from I can get such information<BR><BR>Thankyou for your early response<BR><BR>Sajjad<BR><BR><BR><BR>******************************************************************************<BR>Sajjad Saeed<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: bernd.becker@METOFFICE.GOV.UK<BR>>Reply-To: GRADSUSR@LIST.CINECA.IT<BR>>To: GRADSUSR@LIST.CINECA.IT<BR>>Subject: Re: Units of Precipitation,U,V wind etc. in ERA 40 datasets<BR>>Date: Fri, 10 Nov 2006 11:34:29 +0000<BR>><BR>>http://www.ecmwf.int/products/data/archive/descriptions/e4/index.html<BR>><BR>>On Fri, 2006-11-10 at 16:29 +0500, sajjad saeed wrote:<BR>> > 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<BR>>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<BR>>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<BR>>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<BR>>data<BR>> > > > in the default order of grads if you plan to use it in grads later<BR>>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<BR>>y<BR>> > > > and z.<BR>> > > > Please also set the lat levels as 35, 25, ..., 5, -5, ...,<BR>>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<BR>>QBO<BR>> > >values by<BR>>
> >taking<BR>> > > > > x axis as latitude and y axais as pressure levels. I tried to plot<BR>>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<BR>>different<BR>> > >structure.<BR>> > >Please<BR>> > > > > guide me which is correct and what is the reason for difference. I<BR>>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>>--<BR>>Bernd Becker The Monthly Outlook<BR>>Met Office FitzRoy Road Exeter Devon EX1 3PB United Kingdom<BR>>Tel.: +44 (0) 1392 884511 Fax: +44 (0)870 900 5050<BR>>E-mail:bernd.becker@metoffice.gov.uk - http://www.metoffice.gov.uk<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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