Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-16-0864.1 |
Eddy-Driven Jet Sensitivity to Diabatic Heating in an Idealized GCM | |
Baker, Hugh S.; Woollings, Tim; Mbengue, Cheikh | |
2017-08-01 | |
发表期刊 | JOURNAL OF CLIMATE
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ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2017 |
卷号 | 30期号:16 |
文章类型 | Article |
语种 | 英语 |
国家 | England |
英文摘要 | The eddy-driven jet is studied using a dry idealized model to determine its sensitivity to thermal forcings. The jet latitude, speed, and variability are investigated under a series of Gaussian patch thermal forcing simulations applied systematically on a latitude-sigma grid in the troposphere. This work builds on previous studies by isolating the responses of the jet speed and latitude as opposed to combining them into a single annular mode index. It also explores the sensitivity of the jet to much smaller spatial heatings rather than applying forcing patterns to simulate anthropogenic climate change, as the size and magnitude of the forcings due to anthropogenic climate change are uncertain. The jet speed and latitude are found to have different sensitivity distributions from each other, which also vary between summer and winter. A simple mechanistic understanding of these sensitivities is presented by considering how the individual thermal forcings modify mean isentropic surfaces. In the cases analyzed, the jet response to forcing scales approximately linearly with the strength of the forcing and when forcings are applied in combination. The findings show a rich latitude-pressure distribution of jet sensitivities to thermal forcings, which will aid interpretation of jet responses in a changing climate. Furthermore, they highlight the areas where uncertainty needs to be reduced in the size and position of expected anthropogenic forcings, in order that the uncertainty in changes of the eddy-driven jet can be reduced. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000406040200020 |
WOS关键词 | NORTH-ATLANTIC OSCILLATION ; SEA-ICE LOSS ; ATMOSPHERIC CIRCULATION RESPONSE ; STRATOSPHERIC POLAR VORTEX ; CLIMATE-CHANGE ; STORM-TRACK ; THERMAL FORCINGS ; ANNULAR MODES ; TROPOSPHERE ; VARIABILITY |
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/21098 |
专题 | 气候变化 |
作者单位 | Univ Oxford, Atmospher Ocean & Planetary Phys, Oxford, England |
推荐引用方式 GB/T 7714 | Baker, Hugh S.,Woollings, Tim,Mbengue, Cheikh. Eddy-Driven Jet Sensitivity to Diabatic Heating in an Idealized GCM[J]. JOURNAL OF CLIMATE,2017,30(16). |
APA | Baker, Hugh S.,Woollings, Tim,&Mbengue, Cheikh.(2017).Eddy-Driven Jet Sensitivity to Diabatic Heating in an Idealized GCM.JOURNAL OF CLIMATE,30(16). |
MLA | Baker, Hugh S.,et al."Eddy-Driven Jet Sensitivity to Diabatic Heating in an Idealized GCM".JOURNAL OF CLIMATE 30.16(2017). |
条目包含的文件 | 条目无相关文件。 |
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