On August 27, 2025, the NSF NCAR Climate Data Gateway (CDG) and Geoscience Data Exchange (GDEX) will be migrated into the RDA. Please update your bookmarks and citations.
The RDA Jira Help Desk will be unavailable starting August 25 at 5:00 PM MDT. Service will resume on August 26 under a new name: DATAHELP. All customer channels will automatically redirect to the new DATAHELP page.
The Global Upper Stratospheric and Lower Mesospheric Analyses are provided on a pair of 65 by 65 polar grids, daily at 12Z. These were operationally prepared by NCEP/CPC, using Advanced Microwave Sounding Unit (AMSU) satellite data.
The analyses are available on four levels: 5, 2, 1 and 0.4 millibars. Parameters include pressure, geopotential height, and temperature.
Citation counts are compiled through information provided by publicly-accessible APIs according to the guidelines developed through the https://makedatacount.org/ project. If journals do not provide citation information to these publicly-accessible services, then this citation information will not be included in RDA citation counts. Additionally citations that include dataset DOIs are the only types included in these counts, so legacy citations without DOIs, references found in publication acknowledgements, or references to a related publication that describes a dataset will not be included in these counts.