**Joint OSSE Nature run at NASA Portal update**

**May 9, 2008**

Now the T511 Nature run model resolution data are available from NASA
portal as gradsdod.

 
[**http://opendap.nccs.nasa.gov:9090/dods/OSSE/T511**](http://opendap.nccs.nasa.gov:9090/dods/OSSE/T511)

You can view and down load data. The data can be down loaded in grib1,
NetCDF, or binary. It can be down loaded as selected region.

In order to access the data you have to provide IP number to Arlindo da
Silva of GMAO E-mail:Arlindo.Dasilva@nasa.gov

The same data set and more data are available fro

<http://portal.nccs.nasa.gov/OSSE>

or

<http://portal.nccs.nasa.gov/osse>

Login ID and password will be available from Harper Pryor of NCCS
E-mail: Harper.Pryor@nasa.gov

ftp access to the site is considered. Further reorganization of files is
progress.

Please note following usage and credit for the data set.

**\[Usage and credit \]**

This data must not be used for commercial purposes. ECMWF and the Joint
OSSEs must be given credit in any publications in which these data are
used. A user list at NCCS will be kept and shared with ECMWF and the
Joint OSSE. Redistribution rights are not given.

If you are interested in using the data set, please send
E-mail following information with the statement below to Michiko
Masutani  (michiko.masutani@noaa.gov).

            your name,

           Email  address,

            Affiliation,

            Title of the project (or how NR will be used)

Then your name will be added to the user list and sent to ECMWF.

\"I agree not to copy the ECMWF data or software provided by NCCS for
use by other persons, and I agree to not use these data and/or software
for commercial purposes. ECMWF will be given credit in any publications
in which these data and/or software are used. I understand that if other
persons in my organization wish to use these data and/or software, they
must also sign a copy of this agreement. \"

**\[Announcement from Arlindo da Silva 080430\]**

**Reorganized ECMWF T511 Nature Run files on /portal**

We have now transferred all the reorganized model level, T511, ECMWF
Nature Run files to the data portal at GSFC/NCCS.\
\
**The raw data**\
\
 On **dirac** and **thing\[1-4\]** these files can be found at:\
\
  **/portal/osse/Nature/T511**\
\
There 2 main sub-directories:\
\
  **prog**/ - 2D and 3D prognostic quantities\
  **diag/** - 2D diagnostics\
\
These are essentially the same files we got from ECMWF except that I
have renamed them and placed a single synoptic time per file. No
interpolation of any kind has been performed. Only people on the
\"osse\" group at NCCS have access to this directory. [The original
files as obtained from ECMWF are kept in mass storage.]{.underline}\
\
**GrADS control files**\
\
In the same directory you can find 3 GrADS control files:

*nature.diag.sfc.ctl\
nature.prog.eta.ctl\
nature.prog.sfc.ctl*

You can open these files directly with GrADS. It uses GrADS\' PDEF
feture to linearly interpolate the data from the original thinned
Gaussian grid to a regular Gaussian grid, **on the fly.** The files are
templated as to appear as a single timeseries. For a variable list check
these:

*<http://opendap.nccs.nasa.gov:9090/dods/OSSE/T511/prog.eta.info>\
<http://opendap.nccs.nasa.gov:9090/dods/OSSE/T511/prog.sfc.info>\
<http://opendap.nccs.nasa.gov:9090/dods/OSSE/T511/diag.sfc.info>*

**OPeNDAP Access\
\
**I have pointed the OPeNDAP server to the GrADS \"ctl\" files above.
Because of the licensing restrictions, currently only the IP numbers
below have access to these datasets (although anybody can look at the
dataset directory). If you would like to grant access to other personal
(read: not public) workstations/laptops please send me the IP numbers
and I\'dd add them after Oreste/Ron approaval. The URL for the datasets
are:\
\
  
[**http://opendap.nccs.nasa.gov:9090/dods/OSSE/T511**](http://opendap.nccs.nasa.gov:9090/dods/OSSE/T511)\
\
I am including a convenience GrADS script
([**open_osse.gs**](http://open_osse.gs/)) for accessing these datasets
from any of the \"allowed\" IP numbers. Start **gradsdods** and type

\% gradsdods\
\...\
ga-\> open_osse\
ga-\> [open_osse.gs](http://open_osse.gs/) prog.eta\
ga-\> d u

 

**Appendix A The script to open files.**

function open_osse(dset)

if(dset=\'\'\|dset=\'dset\')

say \'\'

say \'NAME\'

say \' open_osse - Opens ECMWF T511 Nature Run Datasets\'

say \'USAGE\'

say \' open_osse prog.eta \| prog.sfc \| diag.sfc \'

say \'EXAMPLES\'

say \' open_osse prog.eta\'

say \' open_osse prog.sfc\'

say \' open_osse diag.sfc\'

say \'IMPORTANT\'

say \' These are restricted datasets; the IP number\'

say \' of your workstation must be reggistered with\'

say \' the OPeNDAP server for you to be able to \'

say \' access this data.\'

say \'CONTACT\'

say \' Arlindo.daSilva@nasa.gov\'

say \'\'

return 1

endif

\* Get URL

\* \-\-\-\-\-\--

if ( dset=\'prog.eta\' )

url = \'http://opendap.nccs.nasa.gov:9090/dods/OSSE/T511/prog.eta\'

else; if ( dset=\'prog.sfc\' )

url = \'http://opendap.nccs.nasa.gov:9090/dods/OSSE/T511/prog.sfc\'

else; if ( dset=\'diag.sfc\' )

url = \'http://opendap.nccs.nasa.gov:9090/dods/OSSE/T511/diag.sfc\'

else

say \'open_osse: unknown dataset \' dset

say \'open_osse: expecting \"prog.eta\", \"prog.sfc\" or \"prog.eta\"\'

return 1

endif; endif; endif

\* Make sure we\'ve got DODS

\* \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\--

\'q config\'

config = sublin(result,1)

i = 1

while ( i\>0 )

word = subwrd(config,i)

if ( word=\'\' ); i=-1; endif

if ( word=\'dods\' \| word=\'dap\' ); dods=\'yes\'; endif

i = i + 1

endwhile

\* Open the file

\* \-\-\-\-\-\-\-\-\-\-\-\--

if ( dods=\'yes\' )

\'sdfopen \' url

say result

else

say \' \'

say \'open_osse: this version of GrADS cannot open OPeNDAP datasets\'

say \'open_osse: try \"gradsdods\" or \"gradsdap\" instead\'

say \' \'

return 1

endif

return rc

**Appendix B OPeNDAP and Joint OSSE Nature Run Access Control\
 **

Because of the licensing restrictions, currently only the IP numbers

below have access to these datasets (although anybody can look at the

dataset directory). If you would like to grant access to other personal

(read: not public) workstations/laptops please send the IP numbers to

**\
**