Re: NCL can't read NASA HIRDLS Zonal Average file properly.

From: Wei Huang <huangwei_at_nyahnyahspammersnyahnyah>
Date: Wed Nov 09 2011 - 08:36:42 MST

Joe,

HDFOES5 only handles GRID and SWATH data for now.
As this is a ZA (Zonal Average) data, we will take this as a chance
to implement ZA type, as at the time we were implementing
hdfeos5, we could not find a good ZA data sample.

We will let you know when it is done.

Thanks,

Wei

huangwei@ucar.edu
VETS/CISL
National Center for Atmospheric Research
P.O. Box 3000 (1850 Table Mesa Dr.)
Boulder, CO 80307-3000 USA
(303) 497-8924

On Nov 8, 2011, at 2:55 PM, Mary Haley wrote:

> Hi,
>
> Thanks for providing the file offline.
>
> I tried various things on it, including dumping the NO2Day variable with HDF's "h5dump" utility:
>
> h5dump -d "/HDFEOS/ZAS/HIRDLS/Data Fields/NO2Day" --noindex *he5
>
>
> This program does seem to show that there are some values in the file other than zeros and missing values.
>
> I've created a ticket for this, NCL-1237. We'll let you know when we have more information on it.
>
> --Mary
>
> On Nov 8, 2011, at 12:13 PM, H. Joe Lee wrote:
>
>> Hi,
>>
>> I'm trying to visualize the NASA HIRDLS Zonal Average file from [1].
>>
>> When I run the attached code, I can see that NCL doesn't read the "NO2Day" variable properly.
>> I also tried to print "Pressure" and "Latitude" variables but their values are also wrong.
>>
>> If I read the file as an HDF5 file instead of HDF-EOS5 file, I get the following errors
>> ---------------------------------------------------
>> variable length of
>>
>> file: h5reader.c, line: 3174
>>
>> variable length of
>>
>> fatal:NhlRealloc Failed:[errno=25]
>> ----------------------------------------------------
>> and the attribute values are all wrong.
>>
>> I'm wondering if there's any way to fix this problem. I'm running NCL 6.0.0 now.
>>
>> [1] ftp://acdisc.gsfc.nasa.gov/data/s4pa///Aura_HIRDLS_Level3/HIR3ZAD.006/HIRDLS-Aura_L3ZAD_v06-00-00-c02_2005d022-2008d077.he5
>>
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Received on Wed Nov 9 08:36:57 2011

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