Great Plains Low-Level Jet Occurrence and Upper-Level Coupling in CERA-20C

The Great Plains Low-Level Jet Occurrence and Upper-Level Coupling CERA-20C dataset comprises a 3-hourly record of low-level jet activity and degree of upper-atmospheric jet stream coupling over the contiguous United States from 1901-2010 derived from CERA-20C following the objective dynamically-based methodology of Burrows et al. (2019). This dataset extends the work of Uccellini (1980) who first highlighted variations in the degree of coupling between low-level jets and upper-level flow using a visual weather map approach. The presence of an active low-level jet is first assessed according to the conventional Bonner (1968) low-level jet classification. Then, the local finite-amplitude wave activity index of Huang and Nakamura (2015) is applied to assess whether a detected jet is upper-level coupled (or not). This dataset is remarkable because understanding the degree of low-level (terrain) coupling for a particular low-level jet is instrumental in predicting whether regional land-atmosphere interactions may play a role in its evolution, and moreover, whether land data assimilation holds promise for improved predictability in such cases. The dataset includes the coupled/uncoupled classification, as well as u- and v-winds at 700 and 850 hPa from CERA-20C.

To Access Resource:

Questions? Email Resource Support Contact:

  • Chi-Fan Shih
    chifan@ucar.edu
    UCAR/NCAR - Research Data Archive

Temporal Range

  • Begin:  1901-05-01T00:00:00Z
    End:  2010-09-30T21:00:00Z

Keywords

Resource Type dataset
Temporal Range Begin 1901-05-01T00:00:00Z
Temporal Range End 2010-09-30T21:00:00Z
Temporal Resolution N/A
Bounding Box North Lat 49.5
Bounding Box South Lat 25.875
Bounding Box West Long -129.375
Bounding Box East Long -50.625
Spatial Representation grid
Spatial Resolution 1.125 degree
Related Links N/A
Additional Information N/A
Resource Format NetCDF (Binary)
Standardized Resource Format NetCDF
Asset Size 5048 MB
Legal Constraints

Creative Commons Attribution 4.0 International License


Access Constraints None
Software Implementation Language N/A

Resource Support Name Chi-Fan Shih
Resource Support Email chifan@ucar.edu
Resource Support Organization UCAR/NCAR - Research Data Archive
Distributor NCAR Research Data Archive
Metadata Contact Name N/A
Metadata Contact Email rdahelp@ucar.edu
Metadata Contact Organization NCAR Research Data Archive

Author Burrows, David A.
Ferguson, Craig R.
Bosart, Lance F.
Publisher Research Data Archive at the National Center for Atmospheric Research, Computational and Information Systems Laboratory
Publication Date 2019-07-26
Digital Object Identifier (DOI) https://doi.org/10.5065/KDB5-9X72
Alternate Identifier d197000
Resource Version N/A
Topic Category climatologyMeteorologyAtmosphere
Progress completed
Metadata Date 2024-08-04T02:10:46Z
Metadata Record Identifier edu.ucar.rda::d197000
Metadata Language eng; USA
Suggested Citation Burrows, David A., Ferguson, Craig R., Bosart, Lance F.. (2019). Great Plains Low-Level Jet Occurrence and Upper-Level Coupling in CERA-20C. Research Data Archive at the National Center for Atmospheric Research, Computational and Information Systems Laboratory. https://doi.org/10.5065/KDB5-9X72. Accessed 24 November 2024.

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