cloud cover historical data

[hossein lotfi]

On Fri, Nov 6, 2009 at 11:53 AM, Mike Bosilovich
<mike.bosilovich at gmail.com>wrote:

> Hi Claudio,
>
> Just a word of caution. Any reanalysis data is not actually
> observations, and each reanalysis has it's own bias and uncertainty,
> NCEP or otherwise. One reanalysis is not necessarily representative of
> reality, especially in the physics output. Clouds and precipitation
> can be much more related to the model part of the data assimilation
> system. Temperature and heights less so, until you move toward data
> sparse regions.
>
> That said MERRA produces reanalysis cloud fields (1/2 degree
> resolution, global). The following links can be opened in gradsdap or
> opengrads sessions (sdfopen) to get the MERRA cloud fields:
>
> 1 hourly frequency: http://goldsmr2.sci.gsfc.nasa.gov:80/dods/MAT1NXRAD<http://goldsmr2.sci.gsfc.nasa.gov/dods/MAT1NXRAD>
> Monthly: http://goldsmr2.sci.gsfc.nasa.gov:80/dods/MATMNXRAD<http://goldsmr2.sci.gsfc.nasa.gov/dods/MATMNXRAD>
>
> The main data page is at:
> http://disc.sci.gsfc.nasa.gov/daac-bin/DataHoldings.pl with a variety
> of download options.
>
> Also, you may be interested in installing opengrads on your computer.
> It has command lines built in for "merra" and "nomads", and these open
> gui interfaces to each reanalyses Grads Data Servers.
>
> Good Luck and have a great weekend!!
>
> Mike
>
> On Fri, Nov 6, 2009 at 11:59 AM, claudio cortes <claudiomet at gmail.com>
> wrote:
> > greetings
> >
> > when I need historical data for climatological studies, I download
> > datasetes from this ftp:
> > ftp://ftp.cdc.noaa.gov/pub/Datasets/ncep.reanalysis/pressure/
> > where can I find historical values of temperature, geotential heights,
> > humidity and wind
> > and this information I can extract it using grads
> >
> > but at this moment, I need cloud cover historial data and
> > where can I find cloud cover historical datasets ?
> >
> > thaks !
> >
> > --
> > Claudio Cortes
> > +56 (2) 2994121
> >
> > Meteorologo
> > Laboratorio de Meteorologia y Calidad de Aire
> > Centro Nacional del Medio Ambiente (CENMA)
> >
> --------------------------------------------------------------------------------------
> >
> > Claudio Cortes
> > +56 (2) 2994121
> >
> > Meteorologist
> > Meteorology and Air Quality Labs
> > National Enviroment Center, Chile (CENMA)
> >
>
Hi
Thank you very very  much for your email and links
it's has very good data
Thank you [?]   [?]   [?]  [?]  [?]  [?]  [?]
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