Claudio,<br>Try the NOMDADS site from NCDC: <a href="http://nomads.ncdc.noaa.gov/data/">http://nomads.ncdc.noaa.gov/data/</a><br><br>There are a ton of archived analyses and model output, and you can check them to see if any of them have cloud cover data. I know in particular that eta data (first directory on the site in that link) has total atmospheric cloud cover in % as a variable. Hopefully this site has what you are looking for.<br>
<br>Jeff Duda<br><br><div class="gmail_quote">On Fri, Nov 6, 2009 at 10:59 AM, claudio cortes <span dir="ltr"><<a href="mailto:claudiomet@gmail.com">claudiomet@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
greetings<br>
<br>
when I need historical data for climatological studies, I download<br>
datasetes from this ftp:<br>
<a href="ftp://ftp.cdc.noaa.gov/pub/Datasets/ncep.reanalysis/pressure/" target="_blank">ftp://ftp.cdc.noaa.gov/pub/Datasets/ncep.reanalysis/pressure/</a><br>
where can I find historical values of temperature, geotential heights,<br>
humidity and wind<br>
and this information I can extract it using grads<br>
<br>
but at this moment, I need cloud cover historial data and<br>
where can I find cloud cover historical datasets ?<br>
<br>
thaks !<br>
<br>
--<br>
Claudio Cortes<br>
+56 (2) 2994121<br>
<br>
Meteorologo<br>
Laboratorio de Meteorologia y Calidad de Aire<br>
Centro Nacional del Medio Ambiente (CENMA)<br>
--------------------------------------------------------------------------------------<br>
<br>
Claudio Cortes<br>
+56 (2) 2994121<br>
<br>
Meteorologist<br>
Meteorology and Air Quality Labs<br>
National Enviroment Center, Chile (CENMA)<br>
</blockquote></div><br><br clear="all"><br>-- <br>Jeff Duda<br>Iowa State University<br>Meteorology Graduate Student<br>3134 Agronomy Hall<br><a href="http://www.meteor.iastate.edu/~jdduda">www.meteor.iastate.edu/~jdduda</a><br>