干旱区生态环境知识资源中心(Arid): Present-Day Patagonian Dust Emissions: Combining Surface Visibility, Mass Flux, and Reanalysis Data

Arid

DOI	10.1029/2020JD034459
	Present-Day Patagonian Dust Emissions: Combining Surface Visibility, Mass Flux, and Reanalysis Data
	Cosentino, N. J.; Gaiero, D. M.; Lambert, F.
通讯作者	Cosentino, NJ (corresponding author), Pontificia Univ Catolica Chile, Inst Geog, Fac Hist Geog & Ciencia Polit, Santiago, Chile. ; Cosentino, NJ (corresponding author), Nucleo Milenio Paleoclima, Santiago, Chile.
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN	2169-897X
EISSN	2169-8996
出版年	2021
卷号	126 期号:16
英文摘要	The magnitude of the climatic forcing associated with mineral dust aerosols remains uncertain due in part to a lack of observations on dust sources. While modeling and satellite studies provide spatially extensive constraints, they must be supported by surface-validating dust monitoring. Southern South America is the main dust source to the southern oceans (>45 degrees S), a region of low biological productivity potentially susceptible to increased micronutrient fertilization through dust deposition, as well as one of the main dust sources to Antarctica, implying long-range transport of dust from Patagonia and potentially affecting snow cover albedo. We present multiyear time series of dust-related visibility reduction (DRVR) and dust mass flux in Patagonia. We find that local DRVR is partly controlled by long-term (i.e., months) water deficit, while same-day conditions play a smaller role, reflective of water retention properties of fine-grained dust-emitting soils in low-moisture conditions. This is supported independently by reanalysis data showing that large-scale dust outbreaks are usually associated with anomalously high long-term water deficit. By combining visibility data, surface dust sampling, and particle dispersion modeling, we derive regional dust emission rates. Our results suggest that the inclusion of long-term soil hydrologic balance parameterizations under low-moisture conditions may improve the performance of dust emission schemes in Earth system models.
英文关键词	aerosols aridity dust Patagonia
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000688706700011
WOS关键词	SOURCE REGIONS ; SOIL-MOISTURE ; MINERAL DUST ; AEOLIAN DUST ; TRANSPORT ; DESERT ; DEPOSITION ; AEROSOLS ; IMPACT ; MODEL
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363890
作者单位	[Cosentino, N. J.; Lambert, F.] Pontificia Univ Catolica Chile, Inst Geog, Fac Hist Geog & Ciencia Polit, Santiago, Chile; [Cosentino, N. J.; Lambert, F.] Nucleo Milenio Paleoclima, Santiago, Chile; [Gaiero, D. M.] Consejo Nacl Invest Cient & Tecnol CONICET, Ctr Invest Ciencias Tierra CICTERRA, Cordoba, Argentina; [Gaiero, D. M.] Univ Nacl Cordoba, Fac Ciencias Exactas Fis & Nat, Cordoba, Argentina
推荐引用方式 GB/T 7714	Cosentino, N. J.,Gaiero, D. M.,Lambert, F.. Present-Day Patagonian Dust Emissions: Combining Surface Visibility, Mass Flux, and Reanalysis Data[J],2021,126(16).
APA	Cosentino, N. J.,Gaiero, D. M.,&Lambert, F..(2021).Present-Day Patagonian Dust Emissions: Combining Surface Visibility, Mass Flux, and Reanalysis Data.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,126(16).
MLA	Cosentino, N. J.,et al."Present-Day Patagonian Dust Emissions: Combining Surface Visibility, Mass Flux, and Reanalysis Data".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 126.16(2021).