Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-17-0491.1 |
The Spectral Dimension of Modeled Relative Humidity Feedbacks in the CMIP5 Experiments | |
Pan, Fang1; Huang, Xianglei2 | |
2018-12-01 | |
发表期刊 | JOURNAL OF CLIMATE
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ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2018 |
卷号 | 31期号:24页码:10021-10038 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The spectral radiative kernel technique is used to derive spectrally resolved relative humidity (RH) feedbacks for 16 GCMs that participated in CMIP5. Examining spectral and spatial details of these RH feedbacks leads to three findings. First, while the global average of broadband RH feedbacks is close to zero for all the GCMs, there exist wide discrepancies in the spectral details among the GCMs. Second, the spatial pattern of the RH feedbacks varies with spectral frequency; for a given frequency, the spatial feedback pattern correlates well with the spatial pattern of RH changes over the vertical layer to which the top-of-atmosphere spectral flux at the same frequency is most sensitive. Third, the nearly zero global average of broadband RH feedback is a result of spatial compensation and spectral compensation. Since GCMs have produced consistent RH feedbacks and RH changes to a large extent in the high latitudes, the tropical Atlantic, and the deep tropical Pacific, radiative RH kernels are further used to infer mean changes in RH vertical profiles from spectral RH feedbacks averaged over the three broad regions. Good agreements are demonstrated by comparing such inferences against the actual RH changes in the GCMs. This study suggests that the spectral dimension of RH feedback could provide an additional constraint to climate models and the understanding of vertical features of RH changes when they are obtainable from future observations. |
英文关键词 | Feedback Longwave radiation Water vapor Remote sensing |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000451266000002 |
WOS关键词 | WATER-VAPOR FEEDBACK ; CLIMATE FEEDBACKS ; INFRARED-SPECTRA ; ATMOSPHERE |
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/19735 |
专题 | 气候变化 |
作者单位 | 1.NASA, Langley Res Ctr, Hampton, VA 23665 USA; 2.Univ Michigan, Dept Climate & Space Sci & Engn, Ann Arbor, MI 48109 USA |
推荐引用方式 GB/T 7714 | Pan, Fang,Huang, Xianglei. The Spectral Dimension of Modeled Relative Humidity Feedbacks in the CMIP5 Experiments[J]. JOURNAL OF CLIMATE,2018,31(24):10021-10038. |
APA | Pan, Fang,&Huang, Xianglei.(2018).The Spectral Dimension of Modeled Relative Humidity Feedbacks in the CMIP5 Experiments.JOURNAL OF CLIMATE,31(24),10021-10038. |
MLA | Pan, Fang,et al."The Spectral Dimension of Modeled Relative Humidity Feedbacks in the CMIP5 Experiments".JOURNAL OF CLIMATE 31.24(2018):10021-10038. |
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