Climatic factors contributing to long-term variations in surface fine dust concentration in the United States
High concentrations of dust particles can cause respiratory problems and increase non-accidental mortality. Studies found fine dust (with an aerodynamic diameter of less than 2.5 µm) is an important component of the total PM2.5 mass in the western and central US in spring and summer and has positive...
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2018
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00041871 2023-05-15T17:35:39+02:00 Climatic factors contributing to long-term variations in surface fine dust concentration in the United States Pu, Bing Ginoux, Paul 2018-03 electronic https://doi.org/10.5194/acp-18-4201-2018 https://noa.gwlb.de/receive/cop_mods_00041871 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00041491/acp-18-4201-2018.pdf https://acp.copernicus.org/articles/18/4201/2018/acp-18-4201-2018.pdf eng eng Copernicus Publications Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-18-4201-2018 https://noa.gwlb.de/receive/cop_mods_00041871 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00041491/acp-18-4201-2018.pdf https://acp.copernicus.org/articles/18/4201/2018/acp-18-4201-2018.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2018 ftnonlinearchiv https://doi.org/10.5194/acp-18-4201-2018 2022-02-08T22:41:21Z High concentrations of dust particles can cause respiratory problems and increase non-accidental mortality. Studies found fine dust (with an aerodynamic diameter of less than 2.5 µm) is an important component of the total PM2.5 mass in the western and central US in spring and summer and has positive trends. This work examines climatic factors influencing long-term variations in surface fine dust concentration in the US using station data from the Interagency Monitoring Protected Visual Environments (IMPROVE) network during 1990–2015. The variations in the fine dust concentration can be largely explained by the variations in precipitation, surface bareness, and 10 m wind speed. Moreover, including convective parameters such as convective inhibition (CIN) and convective available potential energy (CAPE) that reveal the stability of the atmosphere better explains the variations and trends over the Great Plains from spring to fall. While the positive trend of fine dust concentration in the southwestern US in spring is associated with precipitation deficit, the increase in fine dust over the central Great Plains in summer is largely associated with enhanced CIN and weakened CAPE, which are caused by increased atmospheric stability due to surface drying and lower-troposphere warming. The strengthening of the Great Plains low-level jet also contributes to the increase in fine dust concentration in the central Great Plains in summer via its positive correlation with surface winds and negative correlation with CIN. Summer dusty days in the central Great Plains are usually associated with a westward extension of the North Atlantic subtropical high that intensifies the Great Plains low-level jet and also results in a stable atmosphere with subsidence and reduced precipitation. Article in Journal/Newspaper North Atlantic Niedersächsisches Online-Archiv NOA Atmospheric Chemistry and Physics 18 6 4201 4215 |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Pu, Bing Ginoux, Paul Climatic factors contributing to long-term variations in surface fine dust concentration in the United States |
topic_facet |
article Verlagsveröffentlichung |
description |
High concentrations of dust particles can cause respiratory problems and increase non-accidental mortality. Studies found fine dust (with an aerodynamic diameter of less than 2.5 µm) is an important component of the total PM2.5 mass in the western and central US in spring and summer and has positive trends. This work examines climatic factors influencing long-term variations in surface fine dust concentration in the US using station data from the Interagency Monitoring Protected Visual Environments (IMPROVE) network during 1990–2015. The variations in the fine dust concentration can be largely explained by the variations in precipitation, surface bareness, and 10 m wind speed. Moreover, including convective parameters such as convective inhibition (CIN) and convective available potential energy (CAPE) that reveal the stability of the atmosphere better explains the variations and trends over the Great Plains from spring to fall. While the positive trend of fine dust concentration in the southwestern US in spring is associated with precipitation deficit, the increase in fine dust over the central Great Plains in summer is largely associated with enhanced CIN and weakened CAPE, which are caused by increased atmospheric stability due to surface drying and lower-troposphere warming. The strengthening of the Great Plains low-level jet also contributes to the increase in fine dust concentration in the central Great Plains in summer via its positive correlation with surface winds and negative correlation with CIN. Summer dusty days in the central Great Plains are usually associated with a westward extension of the North Atlantic subtropical high that intensifies the Great Plains low-level jet and also results in a stable atmosphere with subsidence and reduced precipitation. |
format |
Article in Journal/Newspaper |
author |
Pu, Bing Ginoux, Paul |
author_facet |
Pu, Bing Ginoux, Paul |
author_sort |
Pu, Bing |
title |
Climatic factors contributing to long-term variations in surface fine dust concentration in the United States |
title_short |
Climatic factors contributing to long-term variations in surface fine dust concentration in the United States |
title_full |
Climatic factors contributing to long-term variations in surface fine dust concentration in the United States |
title_fullStr |
Climatic factors contributing to long-term variations in surface fine dust concentration in the United States |
title_full_unstemmed |
Climatic factors contributing to long-term variations in surface fine dust concentration in the United States |
title_sort |
climatic factors contributing to long-term variations in surface fine dust concentration in the united states |
publisher |
Copernicus Publications |
publishDate |
2018 |
url |
https://doi.org/10.5194/acp-18-4201-2018 https://noa.gwlb.de/receive/cop_mods_00041871 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00041491/acp-18-4201-2018.pdf https://acp.copernicus.org/articles/18/4201/2018/acp-18-4201-2018.pdf |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-18-4201-2018 https://noa.gwlb.de/receive/cop_mods_00041871 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00041491/acp-18-4201-2018.pdf https://acp.copernicus.org/articles/18/4201/2018/acp-18-4201-2018.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/acp-18-4201-2018 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
18 |
container_issue |
6 |
container_start_page |
4201 |
op_container_end_page |
4215 |
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1766134875365048320 |