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.

To Access Resource:

Questions? Email Resource Support Contact:

  • Doug Schuster
    UCAR/NCAR - Research Data Archive

Temporal Range

  • Begin:  1997-12-01T06:00:00Z
    End:  2010-12-31T18:00:00Z


Resource Type dataset
Temporal Range Begin 1997-12-01T06:00:00Z
Temporal Range End 2010-12-31T18:00:00Z
Temporal Resolution N/A
Bounding Box North Lat 90
Bounding Box South Lat -90
Bounding Box West Long -180
Bounding Box East Long 180
Spatial Representation grid
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 1483681 MB
Legal Constraints

Use of this dataset is subject to UCAR's Terms of Use, except that commercial use is generally not prohibited.

Access Constraints Registration on the RDA web site is a requirement for access to the data.
Software Implementation Language N/A

Resource Support Name Doug Schuster
Resource Support Email
Resource Support Organization UCAR/NCAR - Research Data Archive
Distributor NCAR Research Data Archive
Metadata Contact Name N/A
Metadata Contact Email
Metadata Contact Organization NCAR Research Data Archive

Author Raeder, Kevin
Anderson, Jeffrey L.
Collins, Nancy
Hoar, Timothy J.
Publisher Research Data Archive at the National Center for Atmospheric Research, Computational and Information Systems Laboratory
Publication Date 2016-07-18
Digital Object Identifier (DOI)
Alternate Identifier ds199.1
Resource Version N/A
Topic Category climatologyMeteorologyAtmosphere
Progress completed
Metadata Date 2022-04-25T21:05:02-07:00
Metadata Record Identifier edu.ucar.rda::ds199.1
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. Research Data Archive at the National Center for Atmospheric Research, Computational and Information Systems Laboratory. Accessed 30 September 2023.

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