Re: [gembud] [EXTERNAL] Re: GFS v16 pressure levels < 1 mb and GEMPAK

  • To: "Herzmann, Daryl E [AGRON]" <akrherz@xxxxxxxxxxx>, "gembud@xxxxxxxxxxxxxxxx" <gembud@xxxxxxxxxxxxxxxx>
  • Subject: Re: [gembud] [EXTERNAL] Re: GFS v16 pressure levels < 1 mb and GEMPAK
  • From: "Mullenax, Robert R. (WFF-820.0)[ORBITAL SCIENCES CORPORATION]" <robert.r.mullenax@xxxxxxxx>
  • Date: Mon, 29 Mar 2021 15:30:45 +0000
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Thank you, Daryl. 

-----Original Message-----
From: gembud <gembud-bounces@xxxxxxxxxxxxxxxx> On Behalf Of Herzmann, Daryl E 
[AGRON]
Sent: Monday, March 29, 2021 10:24 AM
To: gembud@xxxxxxxxxxxxxxxx
Subject: [EXTERNAL] Re: [gembud] GFS v16 pressure levels < 1 mb and GEMPAK

Greetings,

Thanks for raising this issue Robert.  I have added a github issue denoting the 
same here:

https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2FUnidata%2Fgempak%2Fissues%2F56&amp;data=04%7C01%7Crobert.r.mullenax%40nasa.gov%7C9950d07b734546c467b908d8f2c6f476%7C7005d45845be48ae8140d43da96dd17b%7C0%7C0%7C637526283621707778%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&amp;sdata=uFmCS6RRCBsw%2FR%2FuTp2wZLYtF3%2BAL7d1db%2BEEuxFBCQ%3D&amp;reserved=0

I checked the most recent release of NCEP NAWIPS and don't see any change log 
entries denoting fixing this nor in the release coming tomorrow (*7.14.0*).  So 
no good news at the moment on this issue.

daryl

--
/**
 * daryl herzmann
 * Systems Analyst III -- Iowa Environmental Mesonet
 * 
https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fmesonet.agron.iastate.edu%2F&amp;data=04%7C01%7Crobert.r.mullenax%40nasa.gov%7C9950d07b734546c467b908d8f2c6f476%7C7005d45845be48ae8140d43da96dd17b%7C0%7C0%7C637526283621707778%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&amp;sdata=LwzvLUffDgcMUrOl2Xl7qpovx9g0LMTKDac6n2FidgQ%3D&amp;reserved=0
 */

________________________________________
From: gembud <gembud-bounces@xxxxxxxxxxxxxxxx> on behalf of Steve Decker 
<sgdecker@xxxxxxxxxxxxxxxxxx>
Sent: Monday, March 22, 2021 4:13 PM
To: gembud@xxxxxxxxxxxxxxxx
Subject: Re: [gembud] GFS v16 pressure levels < 1 mb and GEMPAK

Hmm, looking at the code (e.g., 
https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2FUnidata%2Fgempak%2Fblob%2Fmaster%2Fgempak%2Fsource%2Fgridlib%2Fgd%2Fgdhtoi.f&amp;data=04%7C01%7Crobert.r.mullenax%40nasa.gov%7C9950d07b734546c467b908d8f2c6f476%7C7005d45845be48ae8140d43da96dd17b%7C0%7C0%7C637526283621707778%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&amp;sdata=cNtb%2BGrPjA4Kqugxqk1Jmlu%2BdRC2FA1748LQ5K6zj28%3D&amp;reserved=0
 ) it appears the vertical levels may fundamentally be integers at the file 
format level.  Maybe NCEP has a fix (I have no idea), but it doesn't look like 
it would be easy.

Steve

On 3/22/21 4:54 PM, Mullenax, Robert R. (WFF-820.0)[ORBITAL SCIENCES 
CORPORATION] via gembud wrote:
Hello GEMPAK users,

We are wanting to use the 0.7 mb height, temp, and wind from the new GFS v16. 
However, after decoding the file and doing a gdinfo, the 0.7 mb level doesn't 
show up. I am assuming GEMPAK has an issue with a pressure level as a decimal. 
I also assume NCEP likely provided a fix for that. Has anyone using Unidata 
GEMPAK fixed this to look at data < 1 mb?

Thanks,
Robert Mullenax


Robert Mullenax
Meteorologist
CSBF/Peraton
Columbia Scientific Balloon Facility
robert.r.mullenax@xxxxxxxx<mailto:robert.r.mullenax@xxxxxxxx>
903-729-0271




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--
Steve Decker, Associate Teaching Professor Director, Meteorology Undergraduate 
Program
Department of Environmental Sciences           Phone: (848) 932-5750
Rutgers University                               Fax: (732) 932-8644
14 College Farm Rd                  Email: 
decker@xxxxxxxxxxxxxxxxxx<mailto:decker@xxxxxxxxxxxxxxxxxx>
New Brunswick, NJ  08901-8551

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