HYSPLIT Forum: hysplitbbs.arl.noaa.gov

Subject: Archived gdas1 and gb1 profile discrepancy

Dear ARL forum:

I am using archived gdas1 and gb1 profiles in to predict cloud formation. For cases prior to December 2004, start of the gdas1 archive, I use the gb1 archive. To check consistency between the two archives I compared profiles for the same date, time and location; they are attached. One can see, there is a huge difference between Td values (green lines). I think the gdas1 soundings are the most accurate.

Can the accuracy of the gb1 Td values be improved?

Sincerely,

Em. Prof. Edward Hindman
Earth and Atmospheric Sciences
The City College of New York
https://ehindman.ccny.cuny.edu

ARL does not create this dataset.
https://www.ready.noaa.gov/gbl_reanalysis.php
You may want to contact NCEP/NCAR with any concerns.
https://psl.noaa.gov/data/gridded/data.ncep.reanalysis.html