Arctic System Reanalysis version 2

The Arctic System Reanalysis (ASR) is produced using a high-resolution version of the Polar Weather Research and Forecasting Model (PWRF) and High Resolution Land Data Assimilation (HRLDAS) systems that have been optimized for the Arctic. The final version of 15 km horizontal resolution data set which spans 2000-2016 is available on line through the NCAR's RDA. Similar to ASR version 1, ASR version 2 has 34 pressure levels (71 model levels), 31 surface (including 3 soil variables) and 11 upper air analysis variables, 71 surface (including 3 soil variables) and 17 upper air forecast variables. Both the u- and v- winds relative to grid and relative to earth are present in the final version. The wind speed is also added.ASR version 2 will be updated through 2019, then reran (2000-2019) using the most recent version of Polar WRF and WRFDA plus many other enhancements. This newer version, ASR version 2.5, should be available starting in mid-2020 and will be kept up-to-date through 2020 with a delay of about 3 months.

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  • datahelp@ucar.edu

Temporal Range

  • Begin:  2000-01-01T0000+00
    End:  2016-12-31T2100+00

Keywords

Resource Type dataset
Temporal Range Begin 2000-01-01T0000+00
Temporal Range End 2016-12-31T2100+00
Temporal Resolution N/A
Bounding Box North Lat 89.89776726397238
Bounding Box South Lat 24.643289708511624
Bounding Box West Long 0.0005745393972063084
Bounding Box East Long -0.0016643312958990464
Spatial Representation grid
Spatial Resolution 15000.0 m
Related Links

Related Resource #1 : The Arctic System Reanalysis (ASR) project website
Additional Information N/A
Resource Format NetCDF4
Standardized Resource Format NetCDF
Asset Size 53091279.133 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 National Center for Atmospheric Research, University Corporation for Atmospheric Research
Polar Meterology Group, Byrd Polar and Climate Research Center, The Ohio State University
Publisher NSF National Center for Atmospheric Research
Publication Date 2017-02-21
Digital Object Identifier (DOI) https://doi.org/10.5065/D6X9291B
Alternate Identifier d631001
Resource Version N/A
Topic Category climatologyMeteorologyAtmosphere
Progress completed
Metadata Date 2025-10-09T01:22:45Z
Metadata Record Identifier edu.ucar.gdex::d631001
Metadata Language eng; USA
Suggested Citation National Center for Atmospheric Research, University Corporation for Atmospheric Research, Polar Meterology Group, Byrd Polar and Climate Research Center, The Ohio State University. (2017). Arctic System Reanalysis version 2. NSF National Center for Atmospheric Research. https://doi.org/10.5065/D6X9291B. Accessed 12 October 2025.

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