气候变化领域集成服务门户(CCPortal): Intercomparison of biomass burning aerosol optical properties from in situ and remote-sensing instruments in ORACLES-2016

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DOI	10.5194/acp-19-9181-2019
	Intercomparison of biomass burning aerosol optical properties from in situ and remote-sensing instruments in ORACLES-2016
	Pistone K.; Redemann J.; Doherty S.; Zuidema P.; Burton S.; Cairns B.; Cochrane S.; Ferrare R.; Flynn C.; Freitag S.; Howell S.G.; Kacenelenbogen M.; Leblanc S.; Liu X.; Sebastian Schmidt K.; Iii A.J.S.; Segal-Rozenhaimer M.; Shinozuka Y.; Stamnes S.; Van Diedenhoven B.; Van Harten G.; Xu F.
发表日期	2019
ISSN	16807316
起始页码	9181
结束页码	9208
卷号	19 期号:14
英文摘要	The total effect of aerosols, both directly and on cloud properties, remains the biggest source of uncertainty in anthropogenic radiative forcing on the climate. Correct characterization of intensive aerosol optical properties, particularly in conditions where absorbing aerosol is present, is a crucial factor in quantifying these effects. The southeast Atlantic Ocean (SEA), with seasonal biomass burning smoke plumes overlying and mixing with a persistent stratocumulus cloud deck, offers an excellent natural laboratory to make the observations necessary to understand the complexities of aerosol-cloud-radiation interactions. The first field deployment of the NASA ORACLES (ObseRvations of Aerosols above CLouds and their intEractionS) campaign was conducted in September of 2016 out of Walvis Bay, Namibia. Data collected during ORACLES-2016 are used to derive aerosol properties from an unprecedented number of simultaneous measurement techniques over this region. Here, we present results from six of the eight independent instruments or instrument combinations, all applied to measure or retrieve aerosol absorption and single-scattering albedo. Most but not all of the biomass burning aerosol was located in the free troposphere, in relative humidities typically ranging up to 60 %. We present the single-scattering albedo (SSA), absorbing and total aerosol optical depth (AAOD and AOD), and absorption, scattering, and extinction Ångström exponents (AAE, SAE, and EAE, respectively) for specific case studies looking at near-coincident and near-colocated measurements from multiple instruments, and SSAs for the broader campaign average over the month-long deployment. For the case studies, we find that SSA agrees within the measurement uncertainties between multiple instruments, though, over all cases, there is no strong correlation between values reported by one instrument and another. We also find that agreement between the instruments is more robust at higher aerosol loading (AOD400 > 0:4). The campaign-wide average and range shows differences in the values measured by each instrument. We find the ORACLES-2016 campaign-average SSA at 500 nm (SSA500) to be between 0.85 and 0.88, depending on the instrument considered (4STAR, AirMSPI, or in situ measurements), with the interquartile ranges for all instruments between 0.83 and 0.89. This is consistent with previous September values reported over the region (between 0.84 and 0.90 for SSA at 550nm). The results suggest that the differences observed in the campaign-average values may be dominated by instrument-specific spatial sampling differences and the natural physical variability in aerosol conditions over the SEA, rather than fundamental methodological differences. © 2019 Author(s).
语种	英语
scopus关键词	aerosol; biomass burning; comparative study; complexity; in situ measurement; optical depth; radiative forcing; remote sensing; uncertainty analysis; Atlantic Ocean; Atlantic Ocean (Southeast); Erongo; Namibia; Namibia; Walvis Bay
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/144272
作者单位	Bay Area Environmental Research Institute, Moffett Field, CA, United States; NASA Ames Research Center, Moffett Field, CA, United States; School of Meteorology, University of Oklahoma, Norman, OK, United States; JISAO, University of Washington, Seattle, WA, United States; University of Miami, Rosenstiel School of Marine and Atmospheric Science, Miami, FL, United States; NASA Langley Research Center, Hampton, VA, United States; NASA Goddard Institute for Space Studies, New York, NY, United States; University of Colorado, Boulder, CO, United States; Pacific Northwest National Laboratory, Richland, WA, United States; University of Hawaii at Manoa, Honolulu, HI, United States; Brookhaven National Laboratory, Brookhaven, NY, United States; Universities Space Research Association, Mountain View, CA, United States; Columbia University, Center for Climate System Research, New York, NY, United States; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States
推荐引用方式 GB/T 7714	Pistone K.,Redemann J.,Doherty S.,et al. Intercomparison of biomass burning aerosol optical properties from in situ and remote-sensing instruments in ORACLES-2016[J],2019,19(14).
APA	Pistone K..,Redemann J..,Doherty S..,Zuidema P..,Burton S..,...&Xu F..(2019).Intercomparison of biomass burning aerosol optical properties from in situ and remote-sensing instruments in ORACLES-2016.Atmospheric Chemistry and Physics,19(14).
MLA	Pistone K.,et al."Intercomparison of biomass burning aerosol optical properties from in situ and remote-sensing instruments in ORACLES-2016".Atmospheric Chemistry and Physics 19.14(2019).