The Arctic System Reanalysis (ASR)

Funded by:

- Office of Naval Research (ONR) (April 2018 - April 2021) to bring ASRv2.1 up to date.

- NASA (June 2015 - June 2017) to complete ASRv2 2000-2012

- The National Science Foundation as an International Polar Year (IPY) project


Latest News on ASR (2019/04/19):

ASRv2 15-km has been completed for 2000-2016 and is available at NCAR CISL RDA, 2017-2019 is in production. A full description of ASRv2 is in the Bulletin of the American Meteorological Society (PDF).

We are preparing a new version of ASR. It will use the latest version of WRF and WRFDA, a more advanced data assimilation procedure, implement Morrison microphysics with a specified variable aerosol concentration, change to Noah-MP land surface model, incorporate a thermodynamic sea ice model, and increase the horizontal resolution to at least 10 km with ~ 100 vertical levels. This will be known as ASRv2.5. We expect to complete 2000-2019 by mid-2020 and make it available through NCAR. Production after that will continue in near-real time.

ASRv1 30-km (formerly ASR final version) is complete for January 1, 2000 - December 31, 2012 and will not be extended. ASRv1 30-km is available at the NCAR CISL RDA. A write-up on ASRv1 is available in Bromwich et al. (2016) see below.

Some results for ASRv2 15-km for 2007

Known issues with ASRv1 30-km


Description

The Arctic System Reanalysis (ASR), which can be viewed as a blend of modeling and observations, provides a high resolution description in space (15 km) and time (3 h) of the atmosphere-sea ice-land surface system of the Arctic. The ASR ingests historical data streams of the physical components of the Arctic. Gridded fields from the ASR, such as temperature, radiation and winds, also serve as drivers for coupled ice-ocean, land surface and other models. The ASR permits reconstructions of the Arctic system's state, thereby serving as a state-of-the-art synthesis tool for assessing Arctic climate variability and monitoring Arctic change.


Recent publications based in part or entirely on ASR

  • Radovan, A., S. Crewell, E. M. Knudsen, and A. Rinke, 2019: Environmental conditions for polar low formation and development over the Nordic Seas: study of January cases based on the Arctic System Reanalysis. Tellus A: Dynamic Meteorology and Oceanography, 71:1, 1-16, doi: 10.1080/16000870.2019.1618131. Full Text (PDF)
  • Koyama, T., and J. Stroeve, 2019: Greenland monthly precipitation analysis from the Arctic System Reanalysis (ASR): 2000–2012. Polar Science, 19, 1-12, doi: 10.1016/j.polar.2018.09.001. Full Text (PDF)
  • Justino, F., A. B. Wilson, D. H. Bromwich, A. Avila, L.-S. Bai, and S.-H. Wang, 2019: Northern Hemisphere extratropical turbulent heat fluxes in ASRv2 and global reanalyses. J. Climate, 32, 2145-2166, doi: 10.1175/JCLI-D-18-0535.1. Full Text (PDF)

  • Gutjahr, O., and G. Heinemann G.,2018: A model-based comparison of extreme winds in the Arctic and around Greenland. Int. J. Climatol., 38, 5272–5292, https://doi.org/10.1002/joc.5729. Full Text (PDF)
  • Stoll, P. J., R. G. Graversen, G. Noer, K. Hodges, 2018: An objective global climatology of polar lows based on reanalysis data. Q. J. R. Meteorol. Soc., 144, 2099–2117, https://doi.org/10.1002/qj.3309, Full Text (PDF)
  • Boisvert, L. N., M. A. Webster, A. Petty, T. Markus, D. H. Bromwich, and R. I. Cullather, 2018: Intercomparison of Precipitation Estimates Over the Arctic Ocean and its peripheral seas from Reanalyses. J. Climate, doi: 10.1175/JCLI-D-18-0125.1. Full Text (PDF)

  • Akperov et al., 2018: Cyclone activity in the Arctic from an ensemble of regional climate models (Arctic CORDEX). J. Geophys. Res.: Atmospheres, 123, 2537-2554, doi: 10.1002/2017/JD027703. Full Text (PDF)

  • Bromwich, D., A. Wilson, L. Bai, Z. Liu, M. Barlage, C. Shih, S. Maldonado, K. Hines, S.-H. Wang, J. Woollen, B. Kuo, H. Lin, T. Wee, M. Serreze, and J. Walsh, 2018: The Arctic System Reanalysis Version 2. Bull. Amer. Meteor. Soc., 99, 805-828, doi: 10.1175/BAMS-D-16-0215.1. Full Text (PDF)

  • Zahn, M., M. Akperov, A. Rinke, F. Feser, and I. I. Mokhov, 2018: Trends of cyclone characteristics in the Arctic and their patterns from different reanalysis data. J. Geophys. Res., 123, 2737-2751, doi: 10.1002/2017JD027439. Full Text (PDF)
  • Kohnemann, S. H. E., G. Heinemann, D. H. Bromwich, and O. Gutjahr, 2017: Extreme warming in the Kara Sea and Barents Sea during the winter period 2000-2016. J. Climate., 30, 8913-8927, doi: 10.1175/JCLI-D-16-0693. Full Text (PDF)

  • Kolstad, E. W., 2017: Higher ocean wind speeds during marine cold air outbreaks. Q. J. R. Meteorol. Soc., 143, 2084-2092, doi: 10.1002/qj.23068. Full Text (PDF)

  • Smirnova, J., and P. Golubkin, 2017: Comparing polar lows in atmospheric reanalyses: Arctic System Reanalysis versus ERA-Interim. Mon. Wea. Rev., 145, 2375-2383, doi: 10.1175/MWR-D-16-0333.1. Full Text (PDF)
  • Bromwich, D. H., A. B. Wilson, L. Bai, G. W. K. Moore, and P. Bauer, 2016: A comparison of the regional Arctic System Reanalysis and the global ERA-Interim Reanalysis for the Arctic. Q. J. R. Meteorol. Soc., 142, 644-658, doi: 10.1002/qj.2527. Full Text (PDF)

  • Moore, G. W. K., D. H. Bromwich, A. B. Wilson, I. Renfrew, and L. Bai, 2016: Arctic System Reanalysis improvements in topographically-forced winds near Greenland. Q. J. R. Meteorol. Soc., 142, 2033-2045, doi: 10.1002/qj.2798. Full Text (PDF)

  • Moore, G. W. K., I. A. Renfrew, B. E. Harden, and S. H. Nernild, 2015: The impact of resolution on the representation of southeast Greenland barrier winds and katabatic flows. Geophys. Res. Letts., 42, doi: 10.1002/2015GL063550. Full Text (PDF), Supplementary (PDF)
  • Rampal, P., S. Bouillon, E. Ólason, and M. Morlighem, 2015: neXtSIM: a new Lagrangian sea ice model, The Cryosphere Discuss., 9, 5885-5941, doi:10.5194/tcd-9-5885-2015. Full Text (PDF)
  • Tuononen, M., V. A. Sinclair, and T. Vihma, 2015: A climatology of low-level jets in the mid-latituesand polar regions of the Northern Hemisphere. Atmos. Sci. Let., 16, 492-499, doi: 10.1002/asl.587.

  • Moore, G. W. K., 2014: A new look at Southeast Greenland barrier winds and katabatic flow. US CLIVAR Variations Newsletter, 12, No. 2, 13-19. Full Text (PDF)
  • Tilinina, N., S. K. Gulev, and D. H. Bromwich, 2014: New view of Arctic cyclone activity from the Arctic System Reanalysis. Geophys. Res. Letts., 41, doi: 10.1002/2013gl058924. Full Text (PDF)
  • Wesslén C., M. Tjernström, D. H. Bromwich, G. de Boer, A. M. L. Ekman, L.-S. Bai, and S.-H. Wang, 2014: The Arctic summer atmosphere: An evaluation of reanalyses using ASCOS data. Atmos. Chem. Phys., 14, 2605-2624, doi:10.5194/acp-14-2605-2014. Full Text (PDF)
  • Moore, G. W. K., 2013: The Novaya Zemlya Bora and its impact on Barents Sea air-sea interaction. Geophys. Res. Letts., 40, 3462-3467, doi: 10.1002/grl.50641. Full Text (PDF)

  • Recent Presentations on ASR:

    • Bromwich et al., 2018: Arctic System Reanalysis provides high-resolution accuracy for Arctic studies. SCAR/IASC Open Science Conference, June 19-23, 2018, Davos, Switzerland. (PDF)
    • Bromwich et al., 2017: Improving the representation of the Greater Arctic with ASRv2. 5th International Conference on Reanalysis (ICR5), November 13-17, 2017, Rome, Italy. (PDF)
    • Bromwich et al., 2017: The Arctic System Reanalysis. MOSAiC Implementation Workshop, November 13-16, 2017, St. Petersburg, Russia, (PDF)
    • Bromwich, D. H., A. B. Wilson, L.-S. Bai, G. W. K. Moore, K. M. Hines, S.-H. Wang, W. Kuo, Z. Liu, H.-C. Lin, T.-K. Wee, M. Barlage, M. C. Serreze, J. E. Walsh, A. Slater, J. Woollen, and C.-F. Shih, 2017: Arctic System Reanalysis depiction of Arctic atmospheric circulation. 1st (AC)3 Science Conference on Arctic Amplification, March 26-28, 2017, Bremen, Germany. (PDF)
    • Bromwich, D. H., A. B. Wilson, L.-S. Bai, G. W. K. Moore, K. M. Hines, S.-H. Wang, W. Kuo, Z. Liu, H.-C. Lin, T.-K. Wee, M. Barlage, M. C. Serreze, J. E. Walsh, and A. Slater, 2017: Arctic System Reanalysis: motivation, development, and performance. NCEP, February 28, 2017, College Park, MD. (PDF)
    • Bromwich, D. H., A. B. Wilson, L.-S. Bai, G. W. K. Moore, B. Kuo, Z. Liu, H.-C. Lin, and M. Barlage, 2014: A comparison of the regional Arctic System Reanalysis and the global ERA-Interim Reanalysis for the Arctic. American Geophysical Union Fall Meeting, December 2014, San Francisco, CA. (PDF)
    • Tilinina, N., S. Gulev, and D. H. Bromwich, 2014: New view of Arctic cyclone activity from the Arctic System Reanalysis. EGU General Assembly, 27 April - 02 May 2014, Vienna, Austria. (PDF)
    • Bromwich, D. H., L. Bai, K. M. Hines, S.-H. Wang, B. Kuo, Z. Liu, H.-C. Lin, M. Barlage, M. C. Serreze, J. E. Walsh, 2012: Very high resolution Arctic System Reanalysis for 2000-2011. 4th World Climate Research Programme, International Conference on Reanalyses, 7-12 May 2012, Silver Spring, MA. (PDF)
    • Liu, Z, H.-C. Lin, Y.-H. K, T.-K. Wee, D. H. Bromwich, L. Bai, K. M. Hines, S.-H. Wang, 2012:: WRF atmospheric data assimilation: Lessons learnd from ASR. 4th World Climate Research Programme, International Conference on Reanalyses, 7-12 May 2012, Silver Spring, MA. (PDF)
    • Barlage, M. D. H. Bromwich, L. Bai, and K. M. Hines, 2012:: Arctic System Reanalysis: Land surface parameter assimilation and model updates. 4th World Climate Research Programme, International Conference on Reanalyses, 7-12 May 2012, Silver Spring, MA. (PDF)

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