[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[THREDDS #NTZ-878435]: download ensembles data questions



> Hello Lansing,
> 
> sorry not have written it already in the first e-mail. Yes, I'm trying to 
> download data from the ensembles website (http://www.ensembles-eu.org). Then, 
> from the home page I click on data archives and then on the point 3 of the 
> first list (RCM simulations for hindcasts           and future scenarios) , 
> then RCM data portal. At this point I choose the Erasmo Buonuomo model (grid 
> resolution 25 km, normal sensitivity) and click on online in the DODS/OpenDAP 
> access column. Following I choose DM (daily mean data) and look for the 
> maximum temperature 
> (METO-HC_HadRM3Q0_CTL_ERA40_DM_25km_1959-1960_tasmax.nc.gz). Here there is 
> the data download page with several editable dialogue boxes, where there are 
> also longitude and latitude.
> 
> Thanks in advance for your help and time
> Corrado
> 
> -------------------------------------------
> Corrado Camera
> Post-doc Researcher
> Energy, Environment and Water Research Center
> The Cyprus Institute
> _____
> 
> From: Unidata THREDDS Support [mailto:address@hidden
> To: address@hidden
> Sent: Wed, 11 Jul 2012 18:23:44 +0200
> Subject: [THREDDS #NTZ-878435]: download ensembles data questions
> 
> > Good morning,
> >
> > I've just begun working on climate topics and so I am new in
> > downloading data from the ENSEMBLES website. I've found the files with
> > the abbreviations of the different parameters and from that side it is
> > ok. On the other side, I am wondering if it is possible to download data
> > not for all the model but only for a particular area (I am interested
> > in Cyprus only). In the downloading mask I've seen that there are
> > longitude and latitude fields (rlon, rlat, lon, and lat) and making them
> > active it appears (e.g.) something like rlat: 0:1:189 (I am looking at
> > METO-HC_HadRM3Q0_CTL_ERA40_DM_25km_1981-1990_tasmax.nc.gz).
> > And the same for rlon: 0:1:169.
> >
> > I think that I am not obliged to download the entire range of rlat and
> > rlon (maybe I can set rlat: 0:30:70 and rlon: 0:55:90), but where I
> > can see which are the grid cells that correspond to Cyprus in order to
> > correctly modify the string?
> >
> > Thank you in advance for your help.
> >
> > Kind regards
> > Corrado Camera
> >
> > -------------------------------------------
> > Corrado Camera
> > Post-doc Researcher
> > Energy, Environment and Water Research Center
> > The Cyprus Institute
> >
> 
> Hello Corrado,
> 
> I'm guessing that you are trying to pull data down from www.ensembles-eu.org. 
>  Is this correct?  I started to poke around, but didn't find a data download 
> page that looked like one of our servers.  Could you confirm for me where you 
> are looking to pull your data down?  I could probably help more.
> 
> Regards,
> Lansing Madry
> Unidata
> Boulder, Colorado
> 
> 
> Ticket Details
> ===================
> Ticket ID: NTZ-878435
> Department: Support THREDDS
> Priority: Normal
> Status: Open
> 
> 
> 
Hello Corrado,

No worries - I figured out where you were looking from what you told me in your 
second e-mail.  You are correct that you can select a subset of latitude and 
longitude to download.  The general format of the subsetting is 
start:stop:stride, where stride is set to 1 to get every point, 2 to get every 
other point, and so on.  A useful resource for figuring out how to get what you 
want is www.opendap.org.  Unfortunately, you will need to track down the 
metadata that describes the particular model file you are trying to download in 
order to pick the indices you need.  You could of course use a trial and error 
method, but this might be painful for you.  I looked through the documentation 
that was provided on the download site, and it only gives the horizontal 
resolution (214x220) without specifying what lon0 and lat0 are.  You might best 
be served by contacting the person listed in the documentation, who appears to 
be one address@hidden

I wish I could be more helpful, but it is not a dataset with which I am 
familiar.

Regards,
  Lansing

Ticket Details
===================
Ticket ID: NTZ-878435
Department: Support THREDDS
Priority: Normal
Status: Open


NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.