Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-16-0474.1 |
Transient Response of the Southern Ocean to Changing Ozone: Regional Responses and Physical Mechanisms | |
Seviour, William J. M.; Gnanadesikan, Anand; Waugh, Darryn; Pradal, Marie-Aude | |
2017-04-01 | |
发表期刊 | JOURNAL OF CLIMATE
![]() |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2017 |
卷号 | 30期号:7 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The impact of changing ozone on the climate of the Southern Ocean is evaluated using an ensemble of coupled climate model simulations. By imposing a step change from 1860 to 2000 conditions, response functions associated with this change are estimated. The physical processes that drive this response are different across time periods and locations, as is the sign of the response itself. Initial cooling in the Pacific sector is driven not only by the increased winds pushing cold water northward, but also by the southward shift of storms associated with the jet stream. This shift drives both an increase in cloudiness (resulting in less absorption of solar radiation) and an increase in net freshwater flux to the ocean (resulting in a decrease in surface salinity that cuts off mixing of warm water from below). A subsurface increase in temperature associated with this reduction in mixing then upwells along the Antarctic coast, producing a subsequent warming. Similar changes in convective activity occur in the Weddell Sea but are offset in time. Changes in sea ice concentration also play a role in modulating solar heating of the ocean near the continent. The time scale for the initial cooling is much longer than that seen in NCAR CCSM3.5, possibly reflecting differences in natural convective variability between that model (which has essentially no Southern Ocean deep convection) and the one used here (which has a large and possibly unrealistically regular mode of convection) or to differences in cloud feedbacks or in the location of the anomalous winds. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000399678400010 |
WOS关键词 | ANTARCTIC SEA-ICE ; GENERAL-CIRCULATION MODEL ; BOUNDARY-LAYER ; CLIMATE-CHANGE ; CMIP5 MODELS ; TRENDS ; PARAMETERIZATION ; SIMULATIONS ; VARIABILITY ; CONVECTION |
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/19766 |
专题 | 气候变化 |
作者单位 | Johns Hopkins Univ, Dept Earth & Planetary Sci, Baltimore, MD 21218 USA |
推荐引用方式 GB/T 7714 | Seviour, William J. M.,Gnanadesikan, Anand,Waugh, Darryn,et al. Transient Response of the Southern Ocean to Changing Ozone: Regional Responses and Physical Mechanisms[J]. JOURNAL OF CLIMATE,2017,30(7). |
APA | Seviour, William J. M.,Gnanadesikan, Anand,Waugh, Darryn,&Pradal, Marie-Aude.(2017).Transient Response of the Southern Ocean to Changing Ozone: Regional Responses and Physical Mechanisms.JOURNAL OF CLIMATE,30(7). |
MLA | Seviour, William J. M.,et al."Transient Response of the Southern Ocean to Changing Ozone: Regional Responses and Physical Mechanisms".JOURNAL OF CLIMATE 30.7(2017). |
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