气候变化领域集成服务门户(CCPortal): The impact of volcanic eruptions of different magnitude on stratospheric water vapor in the tropics

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DOI	10.5194/acp-21-6565-2021
	The impact of volcanic eruptions of different magnitude on stratospheric water vapor in the tropics
	Alicia Kroll C.; Dacie S.; Azoulay A.; Schmidt H.; Timmreck C.
发表日期	2021
ISSN	1680-7316
起始页码	6565
结束页码	6591
卷号	21 期号:8
英文摘要	Increasing the temperature of the tropical cold-point region through heating by volcanic aerosols results in increases in the entry value of stratospheric water vapor (SWV) and subsequent changes in the atmospheric energy budget. We analyze tropical volcanic eruptions of different strengths with sulfur (S) injections ranging from 2.5 span classCombining double low line"inline-formula"Tg/span S up to 40 span classCombining double low line"inline-formula"Tg/span S using EVAens, the 100-member ensemble of the Max Planck Institute-Earth System Model in its low-resolution configuration (MPI-ESM-LR) with artificial volcanic forcing generated by the Easy Volcanic Aerosol (EVA) tool. Significant increases in SWV are found for the mean over all ensemble members from 2.5 span classCombining double low line"inline-formula"Tg/span S onward ranging between [5, 160] span classCombining double low line"inline-formula"%/span. However, for single ensemble members, the standard deviation between the control run members (0 span classCombining double low line"inline-formula"Tg/span S) is larger than SWV increase of single ensemble members for eruption strengths up to 20 span classCombining double low line"inline-formula"Tg/span S. A historical simulation using observation-based forcing files of the Mt. Pinatubo eruption, which was estimated to have emitted (span classCombining double low line"inline-formula"7.5±2.5/span) span classCombining double low line"inline-formula"Tg/span S, returns SWV increases slightly higher than the 10 span classCombining double low line"inline-formula"Tg/span S EVAens simulations due to differences in the aerosol profile shape. An additional amplification of the tape recorder signal is also apparent, which is not present in the 10 span classCombining double low line"inline-formula"Tg/span S run. These differences underline that it is not only the eruption volume but also the aerosol layer shape and location with respect to the cold point that have to be considered for post-eruption SWV increases. The additional tropical clear-sky SWV forcing for the different eruption strengths amounts to [0.02, 0.65] span classCombining double low line"inline-formula"W m-2/span, ranging between [2.5, 4] span classCombining double low line"inline-formula"%/span of the aerosol radiative forcing in the 10 span classCombining double low line"inline-formula"Tg/span S scenario. The monthly cold-point temperature increases leading to the SWV increase are not linear with respect to aerosol optical depth (AOD) nor is the corresponding SWV forcing, among others, due to hysteresis effects, seasonal dependencies, aerosol profile heights and feedbacks. However, knowledge of the cold-point temperature increase allows for an estimation of SWV increases of 12 span classCombining double low line"inline-formula"%/span per Kelvin increase in mean cold-point temperature. For yearly averages, power functions are fitted to the cold-point warming and SWV forcing with increasing AOD./p. © 2021 EDP Sciences. All rights reserved.
语种	英语
scopus关键词	air temperature; magnitude; stratosphere; sulfur; tropical region; volcanic aerosol; volcanic eruption; water vapor; Central Luzon; Luzon; Mount Pinatubo; Philippines; Zambales
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/246932
作者单位	Atmosphere in the Earth System, Max Planck Institute for Meteorology, Hamburg, Germany; International Max Planck Research School on Earth System Modelling (IMPRS-ESM), Hamburg, Germany; Remote Sensing Technology Institute (IMF), German Aerospace Center (DLR), Oberpfaffenhofen, Germany
推荐引用方式 GB/T 7714	Alicia Kroll C.,Dacie S.,Azoulay A.,et al. The impact of volcanic eruptions of different magnitude on stratospheric water vapor in the tropics[J],2021,21(8).
APA	Alicia Kroll C.,Dacie S.,Azoulay A.,Schmidt H.,&Timmreck C..(2021).The impact of volcanic eruptions of different magnitude on stratospheric water vapor in the tropics.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(8).
MLA	Alicia Kroll C.,et al."The impact of volcanic eruptions of different magnitude on stratospheric water vapor in the tropics".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.8(2021).