气候变化领域集成服务门户(CCPortal): New Global Meteoric Smoke Observations From SOFIE: Insight Regarding Chemical Composition, Meteoric Influx, and Hemispheric Asymmetry

CCPortal

DOI	10.1029/2021JD035007
	New Global Meteoric Smoke Observations From SOFIE: Insight Regarding Chemical Composition, Meteoric Influx, and Hemispheric Asymmetry
	Hervig M.E.; Plane J.M.C.; Siskind D.E.; Feng W.; Bardeen C.G.; Bailey S.M.
发表日期	2021
ISSN	2169897X
卷号	126 期号:13
英文摘要	Measurements from the Solar Occultation For Ice Experiment (SOFIE) in both hemispheres are used to characterize meteoric smoke in the mesosphere and to estimate the meteoric flux into Earth's atmosphere. New smoke extinction retrievals from sunrise measurements in the Northern Hemisphere (NH) are presented, which complement the previously reported sunset observations in the Southern Hemisphere (SH). The sunrise observations are in good agreement with simulations from the Whole Atmosphere Community Climate Model (WACCM), for both the seasonal and height dependence of smoke in the mesosphere. The SOFIE-WACCM comparisons assumed that smoke in the mesosphere exists purely as Fe-rich olivine. This is justified because olivine is detected optically by SOFIE, meteoric ablation is predicted to inject similar quantities of the most abundant elements (Fe, Mg, and Si) into the mesosphere, and olivine is anticipated by theory and laboratory experiments. In addition, the ablated meteoric influx (AMI) and total meteoric influx determined from SOFIE assuming Fe-rich olivine is in agreement with a recent and independent investigation based on models and observations. SOFIE observations from 2007 to 2021 indicate a global AMI of 7.3 ± 2.2 metric tons per day (t d−1), which corresponds to a total influx (ablated plus surviving material) of 24.7 ± 7.3 t d−1. Finally, the results indicate stronger descent in the NH polar winter mesosphere than in the SH winter. This hemispheric asymmetry at polar latitudes is indicated by smoke and water vapor results from both SOFIE and WACCM. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	meteoric influx; meteoric smoke; SOFIE; WACCM
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185125
作者单位	GATS, Driggs, ID, United States; School of Chemistry, University of Leeds, Leeds, United Kingdom; Space Science Division, Naval Research Laboratory, Washington, DC, United States; NCAS School of Earth and Environment, University of Leeds, Leeds, United Kingdom; National Center for Atmospheric Research, Boulder, CO, United States; Virginia Polytechnic Institute, Blacksburg, VA, United States
推荐引用方式 GB/T 7714	Hervig M.E.,Plane J.M.C.,Siskind D.E.,et al. New Global Meteoric Smoke Observations From SOFIE: Insight Regarding Chemical Composition, Meteoric Influx, and Hemispheric Asymmetry[J],2021,126(13).
APA	Hervig M.E.,Plane J.M.C.,Siskind D.E.,Feng W.,Bardeen C.G.,&Bailey S.M..(2021).New Global Meteoric Smoke Observations From SOFIE: Insight Regarding Chemical Composition, Meteoric Influx, and Hemispheric Asymmetry.Journal of Geophysical Research: Atmospheres,126(13).
MLA	Hervig M.E.,et al."New Global Meteoric Smoke Observations From SOFIE: Insight Regarding Chemical Composition, Meteoric Influx, and Hemispheric Asymmetry".Journal of Geophysical Research: Atmospheres 126.13(2021).