A Revised Prognostic Cloud Fraction Scheme in a Global Forecasting System
| Autor: | Jung-Hyo Chae, Rae-Seol Park, Song-You Hong |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Cumulus parameterization
Scheme (programming language) Atmospheric Science 010504 meteorology & atmospheric sciences Atmospheric models Meteorology business.industry Cloud cover Cloud fraction 0211 other engineering and technologies Geopotential height Cloud computing 02 engineering and technology 01 natural sciences Climatology Satellite data Environmental science business computer 021101 geological & geomatics engineering 0105 earth and related environmental sciences computer.programming_language |
| Zdroj: | Monthly Weather Review. 144:1219-1229 |
| ISSN: | 1520-0493 0027-0644 |
| Popis: | In this study, a revised prognostic cloud fraction scheme for atmospheric models is proposed and its performance is evaluated with a diagnostic cloud fraction scheme. A revision is proposed through a direct linkage between hydrometeors in the cumulus parameterization scheme and the amount of predicted cloud fractions. Cloud fractions that are determined via the prognostic cloud fraction scheme appear to be more realistic than those determined via a diagnostic cloud fraction scheme when both are compared with satellite data. In a medium-range forecast test bed, the biases of large-scale features such as temperature, geopotential height, and mean sea level pressure are moderately reduced when the prognostic cloud fraction scheme is used. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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