Atmospheric deposition of glacial iron in the Gulf of Alaska impacted by the position of the Aleutian Low
Our understanding of glacial flour dust storm delivery of iron to the Gulf of Alaska (GoA) is limited. Here we interpret concurrent time series satellite, meteorological, and aerosol geochemical data from the GoA to examine how interannual variability in regional weather patterns impacts offshore ae...
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ftpubmed:oai:pubmedcentral.nih.gov:7340097 2023-05-15T13:14:52+02:00 Atmospheric deposition of glacial iron in the Gulf of Alaska impacted by the position of the Aleutian Low Schroth, Andrew W. Crusius, John Gassó, Santiago Moy, Christopher M. Buck, Nathan J. Resing, Joseph A. Campbell, Robert W. 2017-05-10 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7340097/ http://www.ncbi.nlm.nih.gov/pubmed/32636573 https://doi.org/10.1002/2017gl073565 en eng http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7340097/ http://www.ncbi.nlm.nih.gov/pubmed/32636573 http://dx.doi.org/10.1002/2017gl073565 Geophys Res Lett Article Text 2017 ftpubmed https://doi.org/10.1002/2017gl073565 2020-07-12T00:41:35Z Our understanding of glacial flour dust storm delivery of iron to the Gulf of Alaska (GoA) is limited. Here we interpret concurrent time series satellite, meteorological, and aerosol geochemical data from the GoA to examine how interannual variability in regional weather patterns impacts offshore aerosol glacial Fe deposition. In 2011, when a northerly Aleutian Low (AL) was persistent during fall, dust emission was suppressed and highly intermittent due to prevalent wet conditions, low winds, and a deep early season snowpack. Conversely, in 2012, frequent and prolonged fall dust storms and high offshore glacial Fe transport were driven by dry conditions and strong offshore winds generated by persistent strong high pressure over the Alaskan interior and Bering Sea and a southerly AL. Twenty-five-fold interannual variability in regional offshore glacial aerosol Fe deposition indicates that glacial dust’s impact on GoA nutrient budgets is highly dynamic and particularly sensitive to regional climate forcing. Text aleutian low Bering Sea Alaska PubMed Central (PMC) Bering Sea Gulf of Alaska Geophysical Research Letters 44 10 5053 5061 |
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Article Schroth, Andrew W. Crusius, John Gassó, Santiago Moy, Christopher M. Buck, Nathan J. Resing, Joseph A. Campbell, Robert W. Atmospheric deposition of glacial iron in the Gulf of Alaska impacted by the position of the Aleutian Low |
topic_facet |
Article |
description |
Our understanding of glacial flour dust storm delivery of iron to the Gulf of Alaska (GoA) is limited. Here we interpret concurrent time series satellite, meteorological, and aerosol geochemical data from the GoA to examine how interannual variability in regional weather patterns impacts offshore aerosol glacial Fe deposition. In 2011, when a northerly Aleutian Low (AL) was persistent during fall, dust emission was suppressed and highly intermittent due to prevalent wet conditions, low winds, and a deep early season snowpack. Conversely, in 2012, frequent and prolonged fall dust storms and high offshore glacial Fe transport were driven by dry conditions and strong offshore winds generated by persistent strong high pressure over the Alaskan interior and Bering Sea and a southerly AL. Twenty-five-fold interannual variability in regional offshore glacial aerosol Fe deposition indicates that glacial dust’s impact on GoA nutrient budgets is highly dynamic and particularly sensitive to regional climate forcing. |
format |
Text |
author |
Schroth, Andrew W. Crusius, John Gassó, Santiago Moy, Christopher M. Buck, Nathan J. Resing, Joseph A. Campbell, Robert W. |
author_facet |
Schroth, Andrew W. Crusius, John Gassó, Santiago Moy, Christopher M. Buck, Nathan J. Resing, Joseph A. Campbell, Robert W. |
author_sort |
Schroth, Andrew W. |
title |
Atmospheric deposition of glacial iron in the Gulf of Alaska impacted by the position of the Aleutian Low |
title_short |
Atmospheric deposition of glacial iron in the Gulf of Alaska impacted by the position of the Aleutian Low |
title_full |
Atmospheric deposition of glacial iron in the Gulf of Alaska impacted by the position of the Aleutian Low |
title_fullStr |
Atmospheric deposition of glacial iron in the Gulf of Alaska impacted by the position of the Aleutian Low |
title_full_unstemmed |
Atmospheric deposition of glacial iron in the Gulf of Alaska impacted by the position of the Aleutian Low |
title_sort |
atmospheric deposition of glacial iron in the gulf of alaska impacted by the position of the aleutian low |
publishDate |
2017 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7340097/ http://www.ncbi.nlm.nih.gov/pubmed/32636573 https://doi.org/10.1002/2017gl073565 |
geographic |
Bering Sea Gulf of Alaska |
geographic_facet |
Bering Sea Gulf of Alaska |
genre |
aleutian low Bering Sea Alaska |
genre_facet |
aleutian low Bering Sea Alaska |
op_source |
Geophys Res Lett |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7340097/ http://www.ncbi.nlm.nih.gov/pubmed/32636573 http://dx.doi.org/10.1002/2017gl073565 |
op_doi |
https://doi.org/10.1002/2017gl073565 |
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Geophysical Research Letters |
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44 |
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10 |
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5053 |
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5061 |
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1766265817464307712 |