| DOI: | 10.1002/2016GL070446
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| 论文题名: | An effective approach to evaluate GCM simulated diurnal variation of clouds |
| 作者: | Chen G.; Wang W.-C.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8503
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| EISSN: | 1944-8234
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| 出版年: | 2016
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| 卷: | 43, 期:20 | | 起始页码: | 11064
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| 结束页码: | 11071
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| 语种: | 英语
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| 英文关键词: | cloud diurnal variation
; cloud-radiation interaction
; effective-daytime cloud fraction
; GCM evaluation
; ISCCP
; MERRA
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| Scopus关键词: | Climatology
; Climatology
; Incident solar radiation
; Incident solar radiation
; Solar radiation
; Solar radiation
; Cloud fraction
; Cloud fraction
; Cloud-radiation interactions
; Cloud-radiation interactions
; Diurnal variation
; Diurnal variation
; GCM evaluation
; GCM evaluation
; ISCCP
; ISCCP
; MERRA
; MERRA
; Climate models
; Climate models
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| 英文摘要: | Cloud radiative effects strongly depend on diurnal variations of insolation and cloud radiative properties. In general circulation models (GCMs), even when the daily-mean cloud properties agree with observations, errors in cloud diurnal cycle can still significantly impact the shortwave radiation and induce model biases. However, this aspect is overlooked in GCM evaluation and intercomparison programs (e.g., Coupled Model Intercomparison Project Phase 5 (CMIP5)), which mainly consider the daily-mean cloud fraction. This study presents a simple approach of using a diagnostic parameter, the “effective-daytime cloud fraction” which accounts for the concurrent variation of clouds and insolation, to reveal GCM biases in cloud diurnal variations. The usefulness of the approach is illustrated by the significant biases of cloud diurnal cycle in the Modern-Era Retrospective analysis for Research and Applications (MERRA) reanalysis when compared with that in the International Satellite Cloud Climatology Project (ISCCP) data. It is thus suggested that the parameter be included as one of the GCM diagnostics for evaluating cloud diurnal cycle in model intercomparisons. ©2016. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84995378465&doi=10.1002%2f2016GL070446&partnerID=40&md5=fd0a7ed523e708fddafcf6b77deebc04
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/9466
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | Atmospheric Sciences Research Center, State University of New York at Albany, Albany, NY, United States
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| Recommended Citation: | |
Chen G.,Wang W.-C.. An effective approach to evaluate GCM simulated diurnal variation of clouds[J]. Geophysical Research Letters,2016-01-01,43(20).
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