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DOI | 10.1029/2018GL080833 |
Atmospheric Moisture Measurements Explain Increases in Tropical Rainfall Extremes | |
Roderick, Thomas P.1; Wasko, Conrad2; Sharma, Ashish1 | |
发表日期 | 2019 |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
卷号 | 46期号:3页码:1375-1382 |
英文摘要 | Anthropogenic climate change is increasing extreme rainfall as a result of an increased water-holding capacity of the atmosphere due to higher temperatures. However, observed rainfall-temperature scaling relationships often differ from the theorized increases in moisture-holding capacity. This discrepancy is most evident in the tropics, where higher surface temperatures show a marked decrease in extreme rainfall intensity despite observed increases in extreme rainfall. Here we use atmospheric moisture measurements from the National Aeronautics and Space Administration's Atmospheric Infrared Sounder with surface data to investigate the tropical rainfall-temperature scaling relationship. We show rainfall intensity scales positively with integrated water vapor in all regions. Further, integrated water vapor does not consistently scale positively with surface air temperature and its dependence on background temperature offers a physical explanation for the apparent negative scaling. We conclude that the inconsistent relationship between surface air temperature and moisture is the reason for the "apparent" negative scaling consistently found in the tropics. |
WOS研究方向 | Geology |
来源期刊 | GEOPHYSICAL RESEARCH LETTERS
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文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/93549 |
作者单位 | 1.univ New South wales, Sch Civil & Environm Engn, Sydney, NSW, Australia; 2.Univ Melbourne, Dept Infrastruct Engn, Melbourne, Vic, Australia |
推荐引用方式 GB/T 7714 | Roderick, Thomas P.,Wasko, Conrad,Sharma, Ashish. Atmospheric Moisture Measurements Explain Increases in Tropical Rainfall Extremes[J],2019,46(3):1375-1382. |
APA | Roderick, Thomas P.,Wasko, Conrad,&Sharma, Ashish.(2019).Atmospheric Moisture Measurements Explain Increases in Tropical Rainfall Extremes.GEOPHYSICAL RESEARCH LETTERS,46(3),1375-1382. |
MLA | Roderick, Thomas P.,et al."Atmospheric Moisture Measurements Explain Increases in Tropical Rainfall Extremes".GEOPHYSICAL RESEARCH LETTERS 46.3(2019):1375-1382. |
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