Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-6637-2018 |
Radiative effects of ozone waves on the Northern Hemisphere polar vortex and its modulation by the QBO | |
Silverman, Vered1; Harnik, Nili1; Matthes, Katja2; Lubis, Sandro W.3; Wahl, Sebastian2 | |
2018-05-09 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:9页码:6637-6659 |
文章类型 | Article |
语种 | 英语 |
国家 | Israel; Germany; USA |
英文摘要 | The radiative effects induced by the zonally asymmetric part of the ozone field have been shown to significantly change the temperature of the NH winter polar cap, and correspondingly the strength of the polar vortex. In this paper, we aim to understand the physical processes behind these effects using the National Center for Atmospheric Research (NCAR)'s Whole Atmosphere Community Climate Model, run with 1960s ozone-depleting substances and greenhouse gases. We find a mid-winter polar vortex influence only when considering the quasi-biennial oscillation (QBO) phases separately, since ozone waves affect the vortex in an opposite manner. Specifically, the emergence of a midlatitude QBO signal is delayed by 1-2 months when radiative ozone-wave effects are removed. The influence of ozone waves on the winter polar vortex, via their modulation of shortwave heating, is not obvious, given that shortwave heating is largest during fall, when planetary stratospheric waves are weakest. Using a novel diagnostic of wave 1 temperature amplitude tendencies and a synoptic analysis of upward planetary wave pulses, we are able to show the chain of events that lead from a direct radiative effect on weak early fall upward-propagating planetary waves to a winter polar vortex modulation. We show that an important stage of this amplification is the modulation of individual wave life cycles, which accumulate during fall and early winter, before being amplified by wave-mean flow feedbacks. We find that the evolution of these early winter upward planetary wave pulses and their induced stratospheric zonal mean flow deceleration is qualitatively different between QBO phases, providing a new mechanistic view of the extratropical QBO signal. We further show how these differences result in opposite radiative ozone-wave effects between east and west QBOs. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000431763600003 |
WOS关键词 | QUASI-BIENNIAL OSCILLATION ; PLANETARY-WAVES ; STRATOSPHERIC OZONE ; VARIABILITY ; CIRCULATION ; ATMOSPHERE ; DESIGN ; WINTER ; MODEL |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; 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/19444 |
专题 | 地球科学 |
作者单位 | 1.Tel Aviv Univ, Fac Exact Sci, Dept Geophys, Tel Aviv, Israel; 2.GEOMAR Helmholtz Ctr Ocean Res Kiel, Kiel, Germany; 3.Univ Chicago, Dept Geophys Sci, 5734 S Ellis Ave, Chicago, IL 60637 USA |
推荐引用方式 GB/T 7714 | Silverman, Vered,Harnik, Nili,Matthes, Katja,et al. Radiative effects of ozone waves on the Northern Hemisphere polar vortex and its modulation by the QBO[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(9):6637-6659. |
APA | Silverman, Vered,Harnik, Nili,Matthes, Katja,Lubis, Sandro W.,&Wahl, Sebastian.(2018).Radiative effects of ozone waves on the Northern Hemisphere polar vortex and its modulation by the QBO.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(9),6637-6659. |
MLA | Silverman, Vered,et al."Radiative effects of ozone waves on the Northern Hemisphere polar vortex and its modulation by the QBO".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.9(2018):6637-6659. |
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