An Ensemble of Atmospheric Forcing Files from a CAM reanalysis 

This dataset contains files that are an ensemble of 'coupler history' files from an 80-member reanalysis performed with the Data Assimilation Research Testbed (DART) using the Community Atmosphere Model Version 4 with the finite volume core (CAM4 FV) at 1.9 degree by 2.5 degree resolution. The observations assimilated include all those used in the NCEP/NCAR reanalysis (temperature and wind components from radiosondes, aircraft, and satellite drift winds) plus radio occultation observations from the COSMIC satellites starting in late 2006.  These files are intended to be used as 'DATM stream files' for CESM "I" component sets (land-only) that require a data atmosphere. Some example stream text files are included to illustrate how to use these data.


Note:  All data were replaced for this dataset on January 27, 2020. There were some unphysical radiation values in the prior version of the dataset that has been fixed in the replacement file set. The unphysical radiation values caused CLM to error out but were likely not an issue for other applications.

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Temporal Range

  • Begin:  1997-12-01T060000+00
    End:  2010-12-31T180000+00

Keywords

Resource Type dataset
Temporal Range Begin 1997-12-01T060000+00
Temporal Range End 2010-12-31T180000+00
Temporal Resolution N/A
Bounding Box North Lat N/A
Bounding Box South Lat N/A
Bounding Box West Long N/A
Bounding Box East Long N/A
Spatial Representation N/A
Spatial Resolution N/A
Related Links

Related Resource #1 : CISL IMAGe Data Assimilation Research Section
Additional Information N/A
Resource Format NetCDF
Standardized Resource Format NetCDF
Asset Size 1521722.949 MB
Legal Constraints

Creative Commons Attribution 4.0 International License
Access Constraints None
Software Implementation Language N/A

Resource Support Name N/A
Resource Support Email datahelp@ucar.edu
Resource Support Organization N/A
Distributor NSF NCAR Geoscience Data Exchange
Metadata Contact Name N/A
Metadata Contact Email datahelp@ucar.edu
Metadata Contact Organization NSF NCAR Geoscience Data Exchange

Author Raeder, Kevin
Anderson, Jeffrey L.
Collins, Nancy
Hoar, Timothy J.
Publisher NSF National Center for Atmospheric Research
Publication Date 2016-07-18
Digital Object Identifier (DOI) https://doi.org/10.5065/38ED-RZ08
Alternate Identifier d199001
Resource Version N/A
Topic Category climatologyMeteorologyAtmosphere
Progress completed
Metadata Date 2025-10-09T01:20:48Z
Metadata Record Identifier edu.ucar.gdex::d199001
Metadata Language eng; USA
Suggested Citation Raeder, Kevin, Anderson, Jeffrey L., Collins, Nancy, Hoar, Timothy J.. (2016). An Ensemble of Atmospheric Forcing Files from a CAM reanalysis. NSF National Center for Atmospheric Research. https://doi.org/10.5065/38ED-RZ08. Accessed 14 October 2025.

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