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Historical Dynamical Downscaling For East Asia With The Atmosphere and Ocean Coupled Regional Model

Abstract

The atmosphere–ocean-coupled regional downscaling system of the Regional Spectral Model for the atmosphere and the Regional Ocean Modeling System (RSM–ROMS) was used to improve the downscaling simulation accuracy, particularly of coastal areas, and a dynamical downscale of the historical global reanalysis data for the East Asian region over 25 years was conducted. The results showed that in the coupled run, the sea surface temperature (SST) tended to show large-scale discrepancy from reality, basically because the models remain imperfect. On the other hand, for net heat flux, precipitation, and surface air temperature, the coupled run showed positive improvement compared with the uncoupled run. The improvement in these three variables and the degradation in SST were also apparent for event-based (one-month) averages. This inconsistency between the impacts on SST and the other variables may indicate that there is room to improve the model system further, particularly in the coupling and/or boundary layer processes for both the atmosphere and ocean.

Article / Publication Data
Active/Online
YES
Volume
94
Available Metadata
Accepted On
July 30, 2015
DOI ↗
Fiscal Year
NOAA IR URL ↗
Peer Reviewed
YES
Publication Name
Journal of The Meteorological Society of Japan
Published On
February 11, 2016
Publisher Name
J Stage
Print Volume
94
Page Range
199-208
Submitted On
December 11, 2014
URL ↗

Institutions

Not available

Authors

Authors who have authored or contributed to this publication.

  • Suryun Ham - lead None
    Other
  • Haiqin Li - third Gsl
    Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder
    NOAA/Global Systems Laboratory