Cut-cell Eta Model: History and Challenges Overcome

نویسندگان

چکیده

Incentive for writing a limited area weather prediction model stemmed from the author’s several years stay at University of California in Los Angeles, end sixties. Exposed to what he refers as Akio Arakawa approach, having had an idea scheme that was improvement using, and being aware importance topography country continue his career in, led 1973 first 3D code, forerunner become Eta model. Refinements enhancements introduced by author subsequent collaborator acquired, Zaviša Janjić, resulted code when installed then U.S. National Meteorological Center, attracted attention. Hallmarks were Mesinger’s eta vertical coordinate, Janjić’s transformation horizontal advection model’s semi-staggered B/E grid. In 1993 became primary regional forecasting Weather Bureau, 1998 its precipitation accuracy 24-48 h forecasts higher across all intensity thresholds than predecessor, Nested Grid Model (NGM) 00-24 forecasts. Lately, is extensively used also climate (RCM), mostly over South American domain, near-real time tool North Regional Reanalysis (NARR), run Centers Environmental Prediction/Climate Prediction Center. Several later unique numerical refinements addressing problems noticed are summarized “before after” fashion, results mentioned ensemble skill compared highly acclaimed driver European Centre Medium-Range Forecasts (ECMWF)

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ژورنال

عنوان ژورنال: Anuário do Instituto de Geociências

سال: 2023

ISSN: ['0101-9759', '1982-3908']

DOI: https://doi.org/10.11137/1982-3908_2023_46_56300