Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-19-0050.1 |
Tropical Pacific Ocean Dynamical Response to Short-Term Sulfate Aerosol Forcing | |
Verma, Tarun1; Saravanan, R.2; Chang, P.2,3; Mahajan, S.4 | |
2019-12-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2019 |
卷号 | 32期号:23页码:8205-8221 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The large-scale and long-term climate impacts of anthropogenic sulfate aerosols consist of Northern Hemisphere cooling and a southward shift of the tropical rain belt. On interannual time scales, however, the response to aerosols is localized with a sizable imprint on local ocean-atmosphere interaction. A large concentration of anthropogenic sulfates over Asia may impact ENSO by modifying processes and interactions that generate this coupled ocean-atmosphere variability. Here, we use climate model experiments with different degrees of ocean-atmosphere coupling to study the tropical Pacific response to an abrupt increase in anthropogenic sulfates. These include an atmospheric general circulation model (GCM) coupled to either a full-ocean GCM or a slab-ocean model, or simply forced by climatology of sea surface temperature. Comparing the responses helps differentiate between the fast atmospheric and slow ocean-mediated responses, and highlights the role of ocean-atmosphere coupling in the latter. We demonstrate the link between the Walker circulation and the equatorial Pacific upper-ocean dynamics in response to increased sulfate aerosols. The local surface cooling due to sulfate aerosols emitted over the Asian continent drives atmospheric subsidence over the equatorial west Pacific. The associated anomalous circulation imparts westerly momentum to the underlying Pacific Ocean, leading to an El Nino-like upper-ocean response and a transient warming of the east equatorial Pacific Ocean. The oceanic adjustment eventually contributes to its decay, giving rise to a damped oscillation of the tropical Pacific Ocean in response to abrupt anthropogenic sulfate aerosol forcing. |
英文关键词 | Tropics Atmosphere-ocean interaction Ocean dynamics Aerosols Climate models Interannual variability |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000494722000003 |
WOS关键词 | SEA-SURFACE TEMPERATURE ; COMMUNITY ATMOSPHERE MODEL ; WALKER CIRCULATION ; OVERTURNING CIRCULATION ; ANTHROPOGENIC AEROSOLS ; SEASONAL CYCLE ; TRADE WINDS ; ENSO ; ATLANTIC ; RAINFALL |
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/225637 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Los Alamos Natl Lab, Los Alamos, NM 87545 USA; 2.Texas A&M Univ, Dept Atmospher Sci, College Stn, TX USA; 3.Texas A&M Univ, Dept Oceanog, College Stn, TX 77843 USA; 4.Oak Ridge Natl Lab, Oak Ridge, TN USA |
推荐引用方式 GB/T 7714 | Verma, Tarun,Saravanan, R.,Chang, P.,et al. Tropical Pacific Ocean Dynamical Response to Short-Term Sulfate Aerosol Forcing[J]. JOURNAL OF CLIMATE,2019,32(23):8205-8221. |
APA | Verma, Tarun,Saravanan, R.,Chang, P.,&Mahajan, S..(2019).Tropical Pacific Ocean Dynamical Response to Short-Term Sulfate Aerosol Forcing.JOURNAL OF CLIMATE,32(23),8205-8221. |
MLA | Verma, Tarun,et al."Tropical Pacific Ocean Dynamical Response to Short-Term Sulfate Aerosol Forcing".JOURNAL OF CLIMATE 32.23(2019):8205-8221. |
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