气候变化领域集成服务门户(CCPortal): Polar stratospheric nitric acid depletion surveyed from a decadal dataset of IASI total columns

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DOI	10.5194/acp-22-10993-2022
	Polar stratospheric nitric acid depletion surveyed from a decadal dataset of IASI total columns
	Wespes, Catherine; Ronsmans, Gaetane; Clarisse, Lieven; Solomon, Susan; Hurtmans, Daniel; Clerbaux, Cathy; Coheur, Pierre-Francois
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	10993
结束页码	11007
卷号	22 期号:16 页码:15
英文摘要	In this paper, we exploit the first 10-year data record (2008-2017) of nitric acid (HNO3) total columns measured by the IASI-A/MetOp infrared sounder, characterized by an exceptional daily sampling and a good vertical sensitivity in the lower-to-mid stratosphere (around 50 hPa), to monitor the relationship between the temperature decrease and the observed HNO3 loss that occurs each year in the Antarctic stratosphere during the polar night. Since the HNO3 depletion results from the formation of polar stratospheric clouds (PSCs), which trigger the development of the ozone (O3) hole, its continuous monitoring is of high importance. We verify here, from the 10-year time evolution of HNO3 together with temperature (taken from reanalysis at 50 hPa), the recurrence of specific regimes in the annual cycle of IASI HNO3 and identify (for each year) the day and the 50 hPa temperature (drop temperature) corresponding to the onset of strong HNO3 depletion in the Antarctic winter. Although the measured HNO3 total column does not allow for the uptake of HNO3 by different types of PSC particles along the vertical profile to be differentiated, an average drop temperature of 194.2 +/- 3.8 K, close to the nitric acid trihydrate (NAT) existence threshold (similar to 195 K at 50 hPa), is found in the region of potential vorticity lower than -10 x 10-5 Km2kg-1s-1 (similar to the 70-90 circle S equivalent latitude region during winter). The spatial distribution and interannual variability of the drop temperature are investigated and discussed. This paper highlights the capability of the IASI sounder to monitor the evolution of polar stratospheric HNO3, a key player in the processes involved in the depletion of stratospheric O3.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000847385900001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273489
作者单位	Universite Libre de Bruxelles; Massachusetts Institute of Technology (MIT); Centre National de la Recherche Scientifique (CNRS); UDICE-French Research Universities; Sorbonne Universite; Universite Paris Cite; Universite Paris Saclay
推荐引用方式 GB/T 7714	Wespes, Catherine,Ronsmans, Gaetane,Clarisse, Lieven,et al. Polar stratospheric nitric acid depletion surveyed from a decadal dataset of IASI total columns[J],2022,22(16):15.
APA	Wespes, Catherine.,Ronsmans, Gaetane.,Clarisse, Lieven.,Solomon, Susan.,Hurtmans, Daniel.,...&Coheur, Pierre-Francois.(2022).Polar stratospheric nitric acid depletion surveyed from a decadal dataset of IASI total columns.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(16),15.
MLA	Wespes, Catherine,et al."Polar stratospheric nitric acid depletion surveyed from a decadal dataset of IASI total columns".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.16(2022):15.