problem with NASA GEOS-5 NWP data

Errors and unexpected results
Post Reply
User avatar
kbedka1
Posts: 428
Joined: Wed Jan 28, 2009 7:27 pm

problem with NASA GEOS-5 NWP data

Post by kbedka1 »

A colleague of mine in the CALIPSO science group here at LaRC (Jay Kar) is doing a survey of all 3-D visualization software that could be used by his team. He suggested I try to load some Goddard Earth Observing System Model, Version 5 (GEOS-5) NWP model data, which happens to be in Netcdf-4 format. I was able to see the full list of data fields, but when I selected one for display, the upper and lower bounds of the color table were listed as "missing" and the display was blank. I've verified that valid data is present in these fields through other means.

His goal is to bring together data from a variety of NASA assets, including Level 1 and Level 2 data from CloudSat and Calipso, and possibly data from other research instruments such as MOPITT into a single visualization. For this to happen as he'd like, additional support for various flavors of HDF format data would need to be developed in Mc-V.
User avatar
Rick
Posts: 404
Joined: Fri Jan 16, 2009 8:20 pm

Re: problem with NASA GEOS-5 NWP data

Post by Rick »

Hi Kris,

Can you post one of the files so we can give it a try?

Thanks,

Rick
User avatar
kbedka1
Posts: 428
Joined: Wed Jan 28, 2009 7:27 pm

Re: problem with NASA GEOS-5 NWP data

Post by kbedka1 »

User avatar
kbedka1
Posts: 428
Joined: Wed Jan 28, 2009 7:27 pm

Re: problem with NASA GEOS-5 NWP data

Post by kbedka1 »

Do you have any word on this?
User avatar
Rick
Posts: 404
Joined: Fri Jan 16, 2009 8:20 pm

Re: problem with NASA GEOS-5 NWP data

Post by Rick »

Hi Kris,

My apologies, but this one slipped through the cracks - can you please repost the file.

Thanks,

Rick
User avatar
kbedka1
Posts: 428
Joined: Wed Jan 28, 2009 7:27 pm

Re: problem with NASA GEOS-5 NWP data

Post by kbedka1 »

I've put the file at the above linked location
User avatar
kbedka1
Posts: 428
Joined: Wed Jan 28, 2009 7:27 pm

Re: problem with NASA GEOS-5 NWP data

Post by kbedka1 »

Actually, I'm sorry, the filename is slightly different. Here you go:

ftp://ftp.ssec.wisc.edu/pub/incoming/e5 ... _0300z.nc4
User avatar
Rick
Posts: 404
Joined: Fri Jan 16, 2009 8:20 pm

Re: problem with NASA GEOS-5 NWP data

Post by Rick »

Hi Kris,

The problem is the valid_range:

:valid_range = 9.9999999E14f, 9.9999999E14f; // float

The values must differ. I used tools.ui to created an ncml file and it was updated to the following:

<attribute name="valid_range" type="float" value="-9.9999999E14 9.9999999E14" />

Without that change, McV will not handle the file. Question - what program would you use to view the data?

Rick
Post Reply