Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018GL077598 |
Regional Intensification of the Tropical Hydrological Cycle During ENSO | |
Stephens, Graeme L.1,2; Hakuba, Maria Z.3; Webb, Mark J.4; Lebsock, Matthew1; Yue, Qing1; Kahn, Brian H.1; Hristova-Veleva, Svetla1; Rapp, Anita D.5; Stubenrauch, Claudia J.6; Elsaesser, Gregory S.7,8; Slingo, Julia4 | |
2018-05-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:9页码:4361-4370 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; England; France |
英文摘要 | This study provides observational evidence for feedbacks that amplify the short-term hydrological response associated with the warm phase of the El Nino-Southern Oscillation. Our analyses make use of a comprehensive set of independent satellite observations collected over decades to show that much larger local changes to cloud (similar to 50%/K) and precipitation (similar to 60%/K) occur than would be expected from the guidance of Clausius-Clapeyron theory (similar to 7%/K). This amplification comes from atmospheric feedbacks involving shifts in the patterns of latent and radiative heating that mutually act on the dynamics enhancing changes to the hydrological cycle. We also confirm the existence of an opposing negative flux feedback at the ocean surface, driven largely by solar radiation changes, that opposes the surface warming. Estimates of the strength of this and other feedback factors associated with warming in the Nino3 region are provided from observations. These observations are also used to examine comparative processes and feedbacks in model experiments from the Coupled Model Intercomparison Project Phase 5 Atmospheric Model Intercomparison Project. Plain Language Summary It is a widely held paradigm of a warming world the "wet gets wetter and dry drier." It is also argued that in this context precipitation in wet areas is expected to increase at a rate of approximately 7%/K, which is in accordance with expected increases in water vapor availability from elementary theory (the so-called Clausius-Clapeyron response). One of the main wet regions of the planet is the region of deep tropical convection organized into broad convective zones referred to as the Inter-Tropical Convergence Zone, and this region undergoes variability that is often used to test ideas thought to be relevant to climate change. Our study pieces together several independent measurements collected over multiple decades to reveal a strong, positive feedback on tropical convection associated with the short-term climate variations of the El Nino/Southern Oscillation. The feedback is a result of coupled dynamical-radiative processes that combine to produce intensification of the tropical hydrological cycle that is more than twice that expected from the CC response alone. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000434111700068 |
WOS关键词 | PRECIPITATION EXTREMES ; ATMOSPHERE RADIATION ; EL-NINO ; CLIMATE ; CLOUDS ; AMPLIFICATION ; IMPROVEMENTS ; FEEDBACKS ; MODIS ; TRMM |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/25485 |
专题 | 气候变化 |
作者单位 | 1.CALTECH, Jet Prop Lab, Pasadena, CA USA; 2.Univ Reading, Dept Meteorol, Reading, Berks, England; 3.Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA; 4.UK Meteorol Off, Exeter, Devon, England; 5.Texas A&M Univ, Dept Atmospher Sci, College Stn, TX USA; 6.Sorbonne Univ, CNRS, Lab Meteorol Dynam, Inst Pierre Simon Laplace, Paris, France; 7.Columbia Univ, Dept Appl Phys & Appl Math, New York, NY USA; 8.NASA, Goddard Inst Space Studies, New York, NY 10025 USA |
推荐引用方式 GB/T 7714 | Stephens, Graeme L.,Hakuba, Maria Z.,Webb, Mark J.,et al. Regional Intensification of the Tropical Hydrological Cycle During ENSO[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(9):4361-4370. |
APA | Stephens, Graeme L..,Hakuba, Maria Z..,Webb, Mark J..,Lebsock, Matthew.,Yue, Qing.,...&Slingo, Julia.(2018).Regional Intensification of the Tropical Hydrological Cycle During ENSO.GEOPHYSICAL RESEARCH LETTERS,45(9),4361-4370. |
MLA | Stephens, Graeme L.,et al."Regional Intensification of the Tropical Hydrological Cycle During ENSO".GEOPHYSICAL RESEARCH LETTERS 45.9(2018):4361-4370. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论