High latitude dust in the Earth system
Natural dust is often associated with hot, subtropical deserts, but significant dust events have been reported from cold, high latitudes. This review synthesizes current understanding of high-latitude (≥50°N and ≥40°S) dust source geography and dynamics and provides a prospectus for future research o...
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ftloughboroughun:oai:figshare.com:article/9483533 2023-05-15T13:35:35+02:00 High latitude dust in the Earth system Joanna Bullard Matthew Baddock Tom Bradwell John Crusius Eleanor F. Darlington Diego Gaiero Santiago Gasso Gudrun Gisladottir Richard Hodgkins Robert McCulloch Cheryl McKenna-Neuman Tom Mockford Helena Stewart Throstur Thorsteinsson 2016-05-23T00:00:00Z https://figshare.com/articles/journal_contribution/High_latitude_dust_in_the_Earth_system/9483533 unknown 2134/21540 https://figshare.com/articles/journal_contribution/High_latitude_dust_in_the_Earth_system/9483533 CC BY-NC-ND 4.0 CC-BY-NC-ND Earth Sciences not elsewhere classified untagged Text Journal contribution 2016 ftloughboroughun 2022-01-01T20:11:58Z Natural dust is often associated with hot, subtropical deserts, but significant dust events have been reported from cold, high latitudes. This review synthesizes current understanding of high-latitude (≥50°N and ≥40°S) dust source geography and dynamics and provides a prospectus for future research on the topic. Although the fundamental processes controlling aeolian dust emissions in high latitudes are essentially the same as in temperate regions, there are additional processes specific to or enhanced in cold regions. These include low temperatures, humidity, strong winds, permafrost and niveo-aeolian processes all of which can affect the efficiency of dust emission and distribution of sediments. Dust deposition at high latitudes can provide nutrients to the marine system, speci fically by contributing iron to high-nutrient, low-chlorophyll oceans; it also affects ice albedo and melt rates. There have been no attempts to quantify systematically the expanse, characteristics, or dynamics of high-latitude dust sources. To address this, we identify and compare the main sources and drivers of dust emissions in the Northern (Alaska, Canada, Greenland, and Iceland) and Southern (Antarctica, New Zealand, and Patagonia) Hemispheres. The scarcity of year-round observations and limitations of satellite remote sensing data at high latitudes are discussed. It is estimated that under contemporary conditions high-latitude sources cover >500,000 km 2 and contribute at least 80–100 Tg yr 1 of dust to the Earth system (~5% of the global dust budget); both are projected to increase under future climate change scenarios. Other Non-Article Part of Journal/Newspaper Antarc* Antarctica Antarctica New Zealand Greenland Ice Iceland permafrost Alaska Loughborough University: Figshare Canada Greenland New Zealand Patagonia |
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Open Polar |
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Loughborough University: Figshare |
op_collection_id |
ftloughboroughun |
language |
unknown |
topic |
Earth Sciences not elsewhere classified untagged |
spellingShingle |
Earth Sciences not elsewhere classified untagged Joanna Bullard Matthew Baddock Tom Bradwell John Crusius Eleanor F. Darlington Diego Gaiero Santiago Gasso Gudrun Gisladottir Richard Hodgkins Robert McCulloch Cheryl McKenna-Neuman Tom Mockford Helena Stewart Throstur Thorsteinsson High latitude dust in the Earth system |
topic_facet |
Earth Sciences not elsewhere classified untagged |
description |
Natural dust is often associated with hot, subtropical deserts, but significant dust events have been reported from cold, high latitudes. This review synthesizes current understanding of high-latitude (≥50°N and ≥40°S) dust source geography and dynamics and provides a prospectus for future research on the topic. Although the fundamental processes controlling aeolian dust emissions in high latitudes are essentially the same as in temperate regions, there are additional processes specific to or enhanced in cold regions. These include low temperatures, humidity, strong winds, permafrost and niveo-aeolian processes all of which can affect the efficiency of dust emission and distribution of sediments. Dust deposition at high latitudes can provide nutrients to the marine system, speci fically by contributing iron to high-nutrient, low-chlorophyll oceans; it also affects ice albedo and melt rates. There have been no attempts to quantify systematically the expanse, characteristics, or dynamics of high-latitude dust sources. To address this, we identify and compare the main sources and drivers of dust emissions in the Northern (Alaska, Canada, Greenland, and Iceland) and Southern (Antarctica, New Zealand, and Patagonia) Hemispheres. The scarcity of year-round observations and limitations of satellite remote sensing data at high latitudes are discussed. It is estimated that under contemporary conditions high-latitude sources cover >500,000 km 2 and contribute at least 80–100 Tg yr 1 of dust to the Earth system (~5% of the global dust budget); both are projected to increase under future climate change scenarios. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
Joanna Bullard Matthew Baddock Tom Bradwell John Crusius Eleanor F. Darlington Diego Gaiero Santiago Gasso Gudrun Gisladottir Richard Hodgkins Robert McCulloch Cheryl McKenna-Neuman Tom Mockford Helena Stewart Throstur Thorsteinsson |
author_facet |
Joanna Bullard Matthew Baddock Tom Bradwell John Crusius Eleanor F. Darlington Diego Gaiero Santiago Gasso Gudrun Gisladottir Richard Hodgkins Robert McCulloch Cheryl McKenna-Neuman Tom Mockford Helena Stewart Throstur Thorsteinsson |
author_sort |
Joanna Bullard |
title |
High latitude dust in the Earth system |
title_short |
High latitude dust in the Earth system |
title_full |
High latitude dust in the Earth system |
title_fullStr |
High latitude dust in the Earth system |
title_full_unstemmed |
High latitude dust in the Earth system |
title_sort |
high latitude dust in the earth system |
publishDate |
2016 |
url |
https://figshare.com/articles/journal_contribution/High_latitude_dust_in_the_Earth_system/9483533 |
geographic |
Canada Greenland New Zealand Patagonia |
geographic_facet |
Canada Greenland New Zealand Patagonia |
genre |
Antarc* Antarctica Antarctica New Zealand Greenland Ice Iceland permafrost Alaska |
genre_facet |
Antarc* Antarctica Antarctica New Zealand Greenland Ice Iceland permafrost Alaska |
op_relation |
2134/21540 https://figshare.com/articles/journal_contribution/High_latitude_dust_in_the_Earth_system/9483533 |
op_rights |
CC BY-NC-ND 4.0 |
op_rightsnorm |
CC-BY-NC-ND |
_version_ |
1766067464440905728 |