气候变化领域集成服务门户(CCPortal): Spatiotemporal changes in aerosol properties by hygroscopic growth and impacts on radiative forcing and heating rates during DISCOVER-AQ 2011

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DOI	10.5194/acp-21-12021-2021
	Spatiotemporal changes in aerosol properties by hygroscopic growth and impacts on radiative forcing and heating rates during DISCOVER-AQ 2011
	Perez-Ramirez D.; Whiteman D.N.; Veselovskii I.; Ferrare R.; Titos G.; Granados-Munoz M.J.; Sanchez-Hernandez G.; Navas-Guzman F.
发表日期	2021
ISSN	1680-7316
起始页码	12021
结束页码	12048
卷号	21 期号:15
英文摘要	This work focuses on the characterization of vertically resolved aerosol hygroscopicity properties and their direct radiative effects through a unique combination of ground-based and airborne remote sensing measurements during the Column and Vertically Resolved Observations Relevant to Air Quality (DISCOVER-AQ) 2011 field campaign in the Baltimore-Washington DC metropolitan area. To that end, we combined aerosol measurements from a multiwavelength Raman lidar located at NASA Goddard Space Flight Center and the airborne NASA Langley High Spectral Resolution Lidar-1 (HSRL-1) lidar system. In situ measurements aboard the P-3B airplane and ground-based Aerosol Robotic Network - Distributed Regional Aerosol Gridded Observational Network (AERONET-DRAGON) served to validate and complement quantifications of aerosol hygroscopicity from lidar measurements and also to extend the study both temporally and spatially. The focus here is on 22 and 29 July 2011, which were very humid days and characterized by a stable atmosphere and increasing relative humidity with height in the planetary boundary layer (PBL). Combined lidar and radiosonde (temperature and water vapor mixing ratio) measurements allowed the retrieval of the Hänel hygroscopic growth factor which agreed with that obtained from airborne in situ measurements and also explained the significant increase of extinction and backscattering with height. Airborne measurements also confirmed aerosol hygroscopicity throughout the entire day in the PBL and identified sulfates and water-soluble organic carbon as the main species of aerosol particles. The combined Raman and HSRL-1 measurements permitted the inversion for aerosol microphysical properties revealing an increase of particle radius with altitude consistent with hygroscopic growth. Aerosol hygroscopicity pattern served as a possible explanation of aerosol optical depth increases during the day, particularly for fine-mode particles. Lidar measurements were used as input to the libRadtran radiative transfer code to obtain vertically resolved aerosol radiative effects and heating rates under dry and humid conditions, and the results reveal that aerosol hygroscopicity is responsible for larger cooling effects in the shortwave range (7-10ĝ€¯Wĝ€¯m-2 depending on aerosol load) near the ground, while heating rates produced a warming of 0.12ĝ€¯Kĝ€¯d-1 near the top of PBL where aerosol hygroscopic growth was highest. © Copyright:
语种	英语
scopus关键词	aerosol property; boundary layer; hygroscopicity; lidar; radiative forcing; radiosonde; relative humidity; spatiotemporal analysis; Baltimore; Maryland; United States; Washington [United States]
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/246662
作者单位	Applied Physics Department, University of Granada, Granada, 18071, Spain; Andalusian Institute for Earth System Research (IISTA-CEAMA), Granada, 18006, Spain; Atmospheric Sciences Program, Howard University, Washington, DC 20059, United States; Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow, Russian Federation; NASA Langley Research Center, Hampton, VA, United States; Federal Office of Meteorology and Climatology, Meteo Swiss 1530, Payerne, Switzerland
推荐引用方式 GB/T 7714	Perez-Ramirez D.,Whiteman D.N.,Veselovskii I.,et al. Spatiotemporal changes in aerosol properties by hygroscopic growth and impacts on radiative forcing and heating rates during DISCOVER-AQ 2011[J],2021,21(15).
APA	Perez-Ramirez D..,Whiteman D.N..,Veselovskii I..,Ferrare R..,Titos G..,...&Navas-Guzman F..(2021).Spatiotemporal changes in aerosol properties by hygroscopic growth and impacts on radiative forcing and heating rates during DISCOVER-AQ 2011.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(15).
MLA	Perez-Ramirez D.,et al."Spatiotemporal changes in aerosol properties by hygroscopic growth and impacts on radiative forcing and heating rates during DISCOVER-AQ 2011".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.15(2021).