Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1800357115 |
Dynamic amplification of extreme precipitation sensitivity | |
Nie, Ji1; Sobel, Adam H.2,3; Shaevitz, Daniel A.3; Wang, Shuguang3 | |
2018-09-18 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
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ISSN | 0027-8424 |
出版年 | 2018 |
卷号 | 115期号:38页码:9467-9472 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | A useful starting hypothesis for predictions of changes in precipitation extremes with climate is that those extremes increase at the same rate as atmospheric moisture does, which is similar to 7% K-1 following the Clausius-Clapeyron (CC) relation. This hypothesis, however, neglects potential changes in the strengths of atmospheric circulations associated with precipitation extremes. As increased moisture leads to increased precipitation, the increased latent heating may lead to stronger large-scale ascent and thus, additional increase in precipitation, leading to a super-CC scaling. This study investigates this possibility in the context of the 2015 Texas extreme precipitation event using the Column Quasi-Geostrophic (CQG) method. Analogs to this event are simulated in different climatic conditions with varying surface temperature (T-s) given the same adiabatic quasigeostrophic forcing. Precipitation in these events exhibits super-CC scaling due to the dynamic contribution associated with increasing ascent due to increased latent heating, an increase with importance that increases with Ts. The thermodynamic contribution (attributable to increasing water vapor; assuming no change in vertical motion) approximately follows CC as expected, while vertical structure changes of moisture and diabatic heating lead to negative but secondary contributions to the sensitivity, reducing the rate of increase. |
英文关键词 | extreme precipitation convection climate change |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000447224900049 |
WOS关键词 | CLIMATE-CHANGE ; FUTURE CHANGES ; SINGLE-COLUMN ; MODEL ; SIMULATIONS ; TEMPERATURE ; CONVECTION ; INCREASES ; ATTRIBUTION ; EVENTS |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
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/204987 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Peking Univ, Dept Atmospher & Ocean Sci, Beijing 100871, Peoples R China; 2.Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY 10964 USA; 3.Columbia Univ, Dept Appl Phys & Appl Math, New York, NY 10027 USA |
推荐引用方式 GB/T 7714 | Nie, Ji,Sobel, Adam H.,Shaevitz, Daniel A.,et al. Dynamic amplification of extreme precipitation sensitivity[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2018,115(38):9467-9472. |
APA | Nie, Ji,Sobel, Adam H.,Shaevitz, Daniel A.,&Wang, Shuguang.(2018).Dynamic amplification of extreme precipitation sensitivity.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,115(38),9467-9472. |
MLA | Nie, Ji,et al."Dynamic amplification of extreme precipitation sensitivity".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 115.38(2018):9467-9472. |
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