Present-Day Patagonian Dust Emissions: Combining Surface Visibility, Mass Flux, and Reanalysis Data
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 So...
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ftconicet:oai:ri.conicet.gov.ar:11336/173879 2023-10-09T21:47:15+02:00 Present-Day Patagonian Dust Emissions: Combining Surface Visibility, Mass Flux, and Reanalysis Data Cosentino, Nicolas Juan Gaiero, Diego Marcelo Lambert, Fabrice application/pdf http://hdl.handle.net/11336/173879 eng eng American Geophysical Union info:eu-repo/semantics/altIdentifier/url/https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2020JD034459 info:eu-repo/semantics/altIdentifier/doi/10.1029/2020JD034459 http://hdl.handle.net/11336/173879 Cosentino, Nicolas Juan; Gaiero, Diego Marcelo; Lambert, Fabrice; Present-Day Patagonian Dust Emissions: Combining Surface Visibility, Mass Flux, and Reanalysis Data; American Geophysical Union; Journal of Geophysical Research: Atmospheres; 126; 16; 8-2021; 1-18 2169-8996 2169-897X CONICET Digital CONICET info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ AEROSOLS ARIDITY DUST PATAGONIA https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1029/2020JD034459 2023-09-24T18:44:05Z 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°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. Fil: Cosentino, Nicolas Juan. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina. Pontificia Universidad Católica de Chile; Chile Fil: Gaiero, Diego Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en ... Article in Journal/Newspaper Antarc* Antarctica CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Patagonia Argentina Cosentino ENVELOPE(-61.417,-61.417,-62.717,-62.717) Journal of Geophysical Research: Atmospheres 126 16 |
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Open Polar |
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CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
AEROSOLS ARIDITY DUST PATAGONIA https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
spellingShingle |
AEROSOLS ARIDITY DUST PATAGONIA https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 Cosentino, Nicolas Juan Gaiero, Diego Marcelo Lambert, Fabrice Present-Day Patagonian Dust Emissions: Combining Surface Visibility, Mass Flux, and Reanalysis Data |
topic_facet |
AEROSOLS ARIDITY DUST PATAGONIA https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
description |
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°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. Fil: Cosentino, Nicolas Juan. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina. Pontificia Universidad Católica de Chile; Chile Fil: Gaiero, Diego Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en ... |
format |
Article in Journal/Newspaper |
author |
Cosentino, Nicolas Juan Gaiero, Diego Marcelo Lambert, Fabrice |
author_facet |
Cosentino, Nicolas Juan Gaiero, Diego Marcelo Lambert, Fabrice |
author_sort |
Cosentino, Nicolas Juan |
title |
Present-Day Patagonian Dust Emissions: Combining Surface Visibility, Mass Flux, and Reanalysis Data |
title_short |
Present-Day Patagonian Dust Emissions: Combining Surface Visibility, Mass Flux, and Reanalysis Data |
title_full |
Present-Day Patagonian Dust Emissions: Combining Surface Visibility, Mass Flux, and Reanalysis Data |
title_fullStr |
Present-Day Patagonian Dust Emissions: Combining Surface Visibility, Mass Flux, and Reanalysis Data |
title_full_unstemmed |
Present-Day Patagonian Dust Emissions: Combining Surface Visibility, Mass Flux, and Reanalysis Data |
title_sort |
present-day patagonian dust emissions: combining surface visibility, mass flux, and reanalysis data |
publisher |
American Geophysical Union |
url |
http://hdl.handle.net/11336/173879 |
long_lat |
ENVELOPE(-61.417,-61.417,-62.717,-62.717) |
geographic |
Patagonia Argentina Cosentino |
geographic_facet |
Patagonia Argentina Cosentino |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
info:eu-repo/semantics/altIdentifier/url/https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2020JD034459 info:eu-repo/semantics/altIdentifier/doi/10.1029/2020JD034459 http://hdl.handle.net/11336/173879 Cosentino, Nicolas Juan; Gaiero, Diego Marcelo; Lambert, Fabrice; Present-Day Patagonian Dust Emissions: Combining Surface Visibility, Mass Flux, and Reanalysis Data; American Geophysical Union; Journal of Geophysical Research: Atmospheres; 126; 16; 8-2021; 1-18 2169-8996 2169-897X CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.1029/2020JD034459 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
126 |
container_issue |
16 |
_version_ |
1779310211944677376 |