DOI: 10.1002/2017JD027576
Scopus记录号: 2-s2.0-85041642173
论文题名: Effect of Gravity Waves From Small Islands in the Southern Ocean on the Southern Hemisphere Atmospheric Circulation
作者: Garfinkel C.I. ; Oman L.D.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 3 起始页码: 1552
结束页码: 1561
语种: 英语
英文关键词: gravity waves
; Southern Ocean
; stratospheric circulation
英文摘要: The effect of small islands in the Southern Ocean on the atmospheric circulation in the Southern Hemisphere is considered with a series of simulations using the NASA Goddard Earth Observing System Chemistry-Climate Model in which the gravity wave stress generated by these islands is increased to resemble observed values. The enhanced gravity wave drag leads to a 2 K warming of the springtime polar stratosphere, partially ameliorating biases in this region. Resolved wave drag declines in the stratospheric region in which the added orographic gravity waves deposit their momentum, such that changes in gravity waves are partially compensated by changes in resolved waves, though resolved wave drag increases further poleward. The orographic drag from these islands has impacts for surface climate, as biases in tropospheric jet position are also partially ameliorated. These results suggest that these small islands are likely contributing to the missing drag near 60°S in the upper stratosphere evident in many data assimilation products. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114473
Appears in Collections: 气候减缓与适应
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作者单位: The Fredy and Nadine Herrmann Institute of Earth Sciences, Hebrew University, Jerusalem, Israel; NASA Goddard Space Flight Center, Greenbelt, MD, United States
Recommended Citation:
Garfinkel C.I.,Oman L.D.. Effect of Gravity Waves From Small Islands in the Southern Ocean on the Southern Hemisphere Atmospheric Circulation[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(3)