[gradsusr] Aqua_AIRS_Level3/AIRX3STD.005 using opendap

[M.Mahakur]

Respected Jenifer and Chris Lynnes,

Thank you very much for your sugestions. Now I could read/display both ways.

With Regards,
Mahakur

----- Original Message -----
From: Jennifer Adams <jma at cola.iges.org>
To: GrADS Users Forum <gradsusr at gradsusr.org>
Sent: Fri, 01 Feb 2013 21:49:03 +0530 (IST)
Subject: Re: [gradsusr] Aqua_AIRS_Level3/AIRX3STD.005 using opendap

You will definitely need a descriptor file for this … either for xdfopen or open. The coordinate variables have non-standard names, and there are a lot of them: 

netcdf AIRS.2008.06.30.L3.RetStd001.v5.2.2.0.G08184124505 {
dimensions:
        CH4_LayersU115 = 3 ;
        CH4_LayersU231 = 3 ;
        CH4_LayersU250 = 3 ;
        CH4_LayersU269 = 3 ;
        CO_LayersU114 = 7 ;
        CO_LayersU230 = 7 ;
        CO_LayersU249 = 7 ;
        CO_LayersU268 = 7 ;
        CoarseCldLyrsU113 = 3 ;
        CoarseCldLyrsU229 = 3 ;
        CoarseCldLyrsU248 = 3 ;
        CoarseCldLyrsU267 = 3 ;
        EmisLvlsU116 = 4 ;
        EmisLvlsU232 = 4 ;
        H2OPrsLvlsU112 = 12 ;
        H2OPrsLvlsU228 = 12 ;
        H2OPrsLvlsU247 = 12 ;
        H2OPrsLvlsU266 = 12 ;
        LatitudeU271 = 180 ;
        LongitudeU272 = 360 ;
        MWEmisLvlsU251 = 3 ;
        MWEmisLvlsU270 = 3 ;
        TempPrsLvlsU111 = 24 ;
        TempPrsLvlsU227 = 24 ;
        TempPrsLvlsU246 = 24 ;
        TempPrsLvlsU265 = 24 ;
variables:

If all those dimensions with the same size have different values, you'll need a separate descriptor for each set of coordinates. Variables that have the same coordinates can be grouped together in a single descriptor file. 
--Jennifer



On Feb 1, 2013, at 10:43 AM, M.Mahakur wrote:

> Respected All,
> 
> I tried to access the L3 AIRX3STD v5 of AQUA/AIRS data using opendap:
> 
> sdfopen http://acdisc.gsfc.nasa.gov/opendap/Aqua_AIRS_Level3/AIRX3STD.005//2008/AIRS.2008.01.01.L3.RetStd001.v5.2.2.0.G08066120251.hdf
> 
> It opened with the error: SDF file has no discernable time coordinate -- using default values.
> 
> Hence it printed a wrong value for time (as below):
> 
> SDF file http://acdisc.gsfc.nasa.gov/opendap/Aqua_AIRS_Level3/AIRX3STD.005//2008/AIRS.2008.06.30.L3.RetStd001.v5.2.2.0.G08184124505.hdf is open as file 1
> LON set to 0 360 
> LAT set to -89.5 89.5 
> LEV set to 0 0 
> Time values set: 1:1:1:0 1:1:1:0 
> E set to 1 1 
> ga-> q file
> File 1 : 
>  Descriptor: http://acdisc.gsfc.nasa.gov/opendap/Aqua_AIRS_Level3/AIRX3STD.005//2008/AIRS.2008.06.30.L3.RetStd001.v5.2.2.0.G08184124505.hdf
>  Binary: http://acdisc.gsfc.nasa.gov/opendap/Aqua_AIRS_Level3/AIRX3STD.005//2008/AIRS.2008.06.30.L3.RetStd001.v5.2.2.0.G08184124505.hdf
>  Type = Gridded
>  Xsize = 360  Ysize = 180  Zsize = 24  Tsize = 1  Esize = 1
>  Number of Variables = 137
> 
> The major problem is it does not show all varibles. The no. of varibales are much larger than 137! I tried with opengrads also, the same problem.
> 
> How can I solve this? I am sure lot of users are using this data ..
> 
> Regards and Thanks,
> 
> Mahakur
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> gradsusr at gradsusr.org
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--
Jennifer M. Adams
IGES/COLA
4041 Powder Mill Road, Suite 302
Calverton, MD 20705
jma at cola.iges.org




-- 
M. Mahakur
Forecasting Research Division
INDIAN INSTITUTE OF TROPICAL  METEOROLOGY
(Ministry of Earth Sciences, Govt. of India)
Dr. Homi Bhabha Road, NCL Post, Pashan
PUNE - 411 008 (INDIA)