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Temporal Characterization of Dust Activity in the Central Patagonia Desert (years 1964-2017)Like a peninsula into the Southern Ocean, the vast Patagonia desert in the southern tip of South America is exposed to extreme winds. Dust blown from this region has important impacts thousands of kilometers away, but these impacts are very difficult to assess. Questions such as the sources of dust found in snow in East Antarctica as well as the provenance of nutrients in the Southern Ocean remain unanswered. While the Patagonia desert is the likely source of dust, there is a dearth of observational records of dust activity from this desert. This study fills the gap in observations by providing a record of 50 years of surface and satellite observations of the largest and most active dust source in Patagonia: lake Colhu Huapi. The seasonality, frequency and periods of major dust activity are identified from meteorological records at a station located 100km downwind from the lake. Collocated satellite observations confirmed the major periods of dust activity in the last 30 years. This dataset provides information on how to interpret records of recent dust found in East Antarctica snow as well as help to understand the CO2 cycle in the Southern Ocean.
Document ID
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
External Source(s)
Gasso, Santiago
(Morgan State Univ. Baltimore, MD, United States)
Torres, Omar
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
April 17, 2019
Publication Date
March 1, 2019
Publication Information
Publication: Journal of Geophysical Research-Atmospheres
Publisher: American Geophysical Union
Volume: 124
Issue: 6
Subject Category
Earth Resources And Remote Sensing
Report/Patent Number
Funding Number(s)
Distribution Limits
Use by or on behalf of the US Gov. Permitted.
satellite observations
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