**Aerosol data problems with NASA GMAO GEOS-5**

[Jason Snyder]

I am still having problem with this website:

http://portal.nccs.nasa.gov/cgi-lats4d/webform.cgi?&i=GEOS-5/yotc/0.25_deg/assim/inst3_3d_aer_Nv
I am trying to download data and I need to set up the times so that the time
steps are every 0 hours (ie January 3 2009 0:00Z, NOT January 3 2009 0:00Z,
so I can use it with NCEP wind data also with time times ending on 0 hours
(ie January 3 2009 0:00Z).  I tried to make the start time for the data I
ordered January 3 2009 0:00 Z(I used many start and end dates including
March 14 2009, etc.).  I get a netcdf file but when I try to open it in
GrADS I get the following message:

ga-> sdfopen inst3_3d_aer_Nv-201001200048.nc
Scanning self-describing file:  inst3_3d_aer_Nv-201001200048.nc
 NetCDF: Index exceeds dimension bound
SDF Error: nc_get_vara_double failed to read coordinate axis value
gadsdf: Error reading first time value in SDF file.
ga->

How can I download aerosol data so that I can use it with NCEP data (
http://www.esrl.noaa.gov/psd/data/gridded/data.ncep.reanalysis.html)?

I tried downloading data from

http://portal.nccs.nasa.gov/cgi-lats4d/webform.cgi?&i=GEOS-5/yotc/0.25_deg/assim/inst3_3d_aer_Nv

using the original begin and end time values under time range (January 1
2009 3:00 Z)

and I cannot use this data set with the NCEP data from website :
http://www.esrl.noaa.gov/psd/data/gridded/data.ncep.reanalysis.html

since this data has time steps ending with 0 hours Z instead od 3 hours Z
from the aerosol data.  How do I resolve this or at least how where can I
find aerosol/wind data that I can use together?

Thanks,

Jason
On Mon, Jan 18, 2010 at 5:35 PM, Jason Snyder <jmssnyder at ucdavis.edu> wrote:

> I am trying to download a netcdf file with sulfate aerosol and bin 4 dust
> mixing ratio data from the following website:
>
>
> http://portal.nccs.nasa.gov/cgi-lats4d/webform.cgi?&i=GEOS-5/yotc/0.25_deg/assim/inst3_3d_aer_Nv
>
> I get this error message when I do this:
>    The website cannot display the page  HTTP 500
>     Most likely causes:
>
>    - The website is under maintenance.
>    - The website has a programming error.
>
>     What you can try:       Refresh the page.       Go back to the
> previous page.      [image: More information]<https://mail.google.com/a/ucdavis.edu/html/compose/static_files/blank_quirks.html#>
>    The website cannot display the page  HTTP 500
>     Most likely causes:
>
>    - The website is under maintenance.
>    - The website has a programming error.
>
>     What you can try:       Refresh the page.       Go back to the
> previous page.      [image: More information]<https://mail.google.com/a/ucdavis.edu/html/compose/static_files/blank_quirks.html#>
> I have been trying this several times and still I keep getting this error
> message.
> For the tme steps on the data requested I need to have start on 0 hours
> time wise to be compatible with other data sets.
>
> Can you help me get data from this website or if you have these data files
> already to e-mail them to me?
>
> Thanks,
>
> Jason
>
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