气候变化领域集成服务门户(CCPortal): The response of mesospheric H2O and CO to solar irradiance variability in models and observations

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DOI	10.5194/acp-21-201-2021
	The response of mesospheric H2O and CO to solar irradiance variability in models and observations
	Karagodin-Doyennel A.; Rozanov E.; Kuchar A.; Ball W.; Arsenovic P.; Remsberg E.; Jöckel P.; Kunze M.; Plummer D.A.; Stenke A.; Marsh D.; Kinnison D.; Peter T.
发表日期	2021
ISSN	1680-7316
起始页码	201
结束页码	216
卷号	21 期号:1
英文摘要	Water vapor (H2O) is the source of reactive hydrogen radicals in the middle atmosphere, whereas carbon monoxide (CO), being formed by CO2photolysis, is suitable as a dynamical tracer. In the mesosphere, both H2O and CO are sensitive to solar irradiance (SI) variability because of their destruction/production by solar radiation. This enables us to analyze the solar signal in both models and observed data. Here, we evaluate the mesospheric H2O and CO response to solar irradiance variability using the Chemistry- Climate Model Initiative (CCMI-1) simulations and satellite observations. We analyzed the results of four CCMI models (CMAM, EMAC-L90MA, SOCOLv3, and CESM1- WACCM 3.5) operated in CCMI reference simulation REFC1SD in specified dynamics mode, covering the period from 1984-2017. Multiple linear regression analyses show a pronounced and statistically robust response of H2O and CO to solar irradiance variability and to the annual and semiannual cycles. For periods with available satellite data, we compared the simulated solar signal against satellite observations, namely the GOZCARDS composite for 1992-2017 for H2O and Aura/MLS measurements for 2005-2017 for CO. The model results generally agree with observations and reproduce an expected negative and positive correlation for H2O and CO, respectively, with solar irradiance. However, the magnitude of the response and patterns of the solar signal varies among the considered models, indicating differences in the applied chemical reaction and dynamical schemes, including the representation of photolyzes. We suggest that there is no dominating thermospheric influence of solar irradiance in CO, as reported in previous studies, because the response to solar variability is comparable with observations in both low-top and high-top models. We stress the importance of this work for improving our understanding of the current ability and limitations of state-of-the-art models to simulate a solar signal in the chemistry and dynamics of the middle atmosphere. © 2021 Copernicus GmbH. All rights reserved.
语种	英语
scopus关键词	carbon dioxide; chemical reaction; climate modeling; irradiance; mesosphere; oxygen; photolysis; regression analysis; satellite data; solar radiation; water vapor
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/247239
作者单位	The Institute for Atmospheric and Climate Science (IAC), ETH Zurich, Zurich, Switzerland; The Physikalisch-Meteorologisches Observatorium Davos/World Radiation Center (PMOD/WRC), Davos, Switzerland; Faculty of Physics and Earth Sciences, Leipzig Institute for Meteorology (LIM), Leipzig, Germany, Germany; Department of Geoscience and Remote Sensing, TU Delft, Delft, Netherlands; Swiss Federal Laboratories for Materials Science and Technology (EMPA), Dübendorf, Switzerland; Science Directorate, NASA Langley Research Center, Hampton, VA, United States; Institut für Physik der Atmosphäre, Deutsches Zentrum für Luft- und Raumfahrt (DLR), Oberpfaffenhofen, Germany; Institut für Meteorologie, Freie Universität Berlin, Berlin, 12165, Germany; Climate Research Division, Environment and Climate Change Canada, Montreal, Canada, Canada; National Center for Atmospheric Research, Boulder, CO, United States; Priestley International Centre for Climate, University of Leeds, Leeds, United Kingdom
推荐引用方式 GB/T 7714	Karagodin-Doyennel A.,Rozanov E.,Kuchar A.,et al. The response of mesospheric H2O and CO to solar irradiance variability in models and observations[J],2021,21(1).
APA	Karagodin-Doyennel A..,Rozanov E..,Kuchar A..,Ball W..,Arsenovic P..,...&Peter T..(2021).The response of mesospheric H2O and CO to solar irradiance variability in models and observations.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(1).
MLA	Karagodin-Doyennel A.,et al."The response of mesospheric H2O and CO to solar irradiance variability in models and observations".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.1(2021).