CESM2 Pacific Pacemaker Ensemble

A 10-member ensemble of CESM2 (1 degree spatial resolution) simulations in which time-evolving SST anomalies in the eastern tropical Pacific are nudged to observations (NOAA Extended Reconstruction Sea Surface Temperature version 5: ERSSTv5) during 1880-2019. In this way, the observed evolution of ENSO is maintained in each simulation (i.e. ENSO is the pacemaker), with the rest of the model's coupled climate system free to evolve. Note that only the SST anomalies, not the total SST, are nudged to observations, maintaining the model's mean state, including and model biases. In the East Pacific, the nudging is full strength between 15S and 15N and from the International Date Line to the American coast with a 5 degree latitude buffer region to the south and north where the strength of the relaxation is linearly reduced. West of the Date Line, the nudging mask takes the form of a wedge shape, tapering off in latitude toward the Maritime continent.

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Temporal Range

  • Begin:  1880-01-01
    End:  2019-12-31

Keywords

Resource Type dataset
Temporal Range Begin 1880-01-01
Temporal Range End 2019-12-31
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 : CESM CVCWG CESM2 Pacific Pacemaker Ensemble

Additional Information N/A
Resource Format NetCDF
Standardized Resource Format NetCDF
Asset Size 51417238.793 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 Rosenbloom, N.
Simpson, I.
Phillips, A. S.
Publisher NSF National Center for Atmospheric Research
Publication Date 2025-07-24
Digital Object Identifier (DOI) Not Assigned
Alternate Identifier d651068
Resource Version N/A
Topic Category climatologyMeteorologyAtmosphere
Progress completed
Metadata Date 2025-10-09T01:35:11Z
Metadata Record Identifier edu.ucar.gdex::d651068
Metadata Language eng; USA
Suggested Citation Rosenbloom, N., Simpson, I., Phillips, A. S.. (2025). CESM2 Pacific Pacemaker Ensemble. NSF National Center for Atmospheric Research. https://gdex.ucar.edu/datasets/d651068. Accessed 12 October 2025.

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