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DOI | 10.1007/s00382-016-3107-6 |
Simplified ISCCP cloud regimes for evaluating cloudiness in CMIP5 models | |
Jin, Daeho1,2; Oreopoulos, Lazaros2; Lee, Dongmin2,3 | |
2017 | |
发表期刊 | CLIMATE DYNAMICS
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ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2017 |
卷号 | 48 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | We take advantage of ISCCP simulator data available for many models that participated in CMIP5, in order to introduce a framework for comparing model cloud output with corresponding ISCCP observations based on the cloud regime (CR) concept. Simplified global CRs are employed derived from the co-variations of three variables, namely cloud optical thickness, cloud top pressure and cloud fraction (tau, p (c) , CF). Following evaluation criteria established in a companion paper of ours (Jin et al. 2016), we assess model cloud simulation performance based on how well the simplified CRs are simulated in terms of similarity of centroids, global values and map correlations of relative-frequency-of-occurrence, and long-term total cloud amounts. Mirroring prior results, modeled clouds tend to be too optically thick and not as extensive as in observations. CRs with high-altitude clouds from storm activity are not as well simulated here compared to the previous study, but other regimes containing near-overcast low clouds show improvement. Models that have performed well in the companion paper against CRs defined by joint tau-p (c) histograms distinguish themselves again here, but improvements for previously underperforming models are also seen. Averaging across models does not yield a drastically better picture, except for cloud geographical locations. Cloud evaluation with simplified regimes seems thus more forgiving than that using histogram-based CRs while still strict enough to reveal model weaknesses. |
英文关键词 | CMIP5 evaluation CFMIP COSP ISCCP simulator Cloud assessment Cloud climatology Cloud regime |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000392307300007 |
WOS关键词 | INSTRUMENT SIMULATORS ; ECMWF |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/35949 |
专题 | 气候变化 |
作者单位 | 1.Univ Space Res Assoc, Columbia, MD 21046 USA; 2.NASA, Goddard Space Flight Ctr, Code 613, Greenbelt, MD 20771 USA; 3.Morgan State Univ, Baltimore, MD 21239 USA |
推荐引用方式 GB/T 7714 | Jin, Daeho,Oreopoulos, Lazaros,Lee, Dongmin. Simplified ISCCP cloud regimes for evaluating cloudiness in CMIP5 models[J]. CLIMATE DYNAMICS,2017,48. |
APA | Jin, Daeho,Oreopoulos, Lazaros,&Lee, Dongmin.(2017).Simplified ISCCP cloud regimes for evaluating cloudiness in CMIP5 models.CLIMATE DYNAMICS,48. |
MLA | Jin, Daeho,et al."Simplified ISCCP cloud regimes for evaluating cloudiness in CMIP5 models".CLIMATE DYNAMICS 48(2017). |
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