Spatial and temporal variability of brown carbon in United States: implications for direct radiative effects
A newly developed dataset from the Interagency Monitoring of PROtected Visual Environments (IMPROVE) observation network, combined with a 3-D chemical transport model, is used to evaluate the spatial and temporal variability of brown carbon (BrC) in the United States. The model with BrC emitted from...
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ftpubmed:oai:pubmedcentral.nih.gov:8353956 2023-05-15T15:04:04+02:00 Spatial and temporal variability of brown carbon in United States: implications for direct radiative effects June, Nicole Wang, Xuan Chen, L.-W. Antony Chow, Judith C. Watson, John G. Wang, Xiaoliang Henderson, Barron H. Zheng, Yiqi Mao, Jingqiu 2020-12-16 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8353956/ http://www.ncbi.nlm.nih.gov/pubmed/34381286 https://doi.org/10.1029/2020gl090332 en eng http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8353956/ http://www.ncbi.nlm.nih.gov/pubmed/34381286 http://dx.doi.org/10.1029/2020gl090332 Geophys Res Lett Article Text 2020 ftpubmed https://doi.org/10.1029/2020gl090332 2021-08-15T00:48:49Z A newly developed dataset from the Interagency Monitoring of PROtected Visual Environments (IMPROVE) observation network, combined with a 3-D chemical transport model, is used to evaluate the spatial and temporal variability of brown carbon (BrC) in the United States. The model with BrC emitted from biomass burning and biofuel emissions agrees with the seasonal and spatial variability of BrC planetary boundary layer (PBL) absorption aerosol optical depth (AAOD) observations within a factor of 2. The model without whitening, the tendency for absorption to decrease with aerosol aging, overestimates the observed BrC PBL AAOD, and does not reflect the measured BrC PBL AAOD spatial variability. The model shows higher absorption direct radiative effects (DRE) from BrC at northern high latitudes than at mid-latitudes in spring and summer, due to boreal fire emissions, long whitening lifetimes and high surface albedos. These findings highlight the need to study BrC over the Arctic region. Text Arctic PubMed Central (PMC) Arctic Geophysical Research Letters 47 23 |
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Article June, Nicole Wang, Xuan Chen, L.-W. Antony Chow, Judith C. Watson, John G. Wang, Xiaoliang Henderson, Barron H. Zheng, Yiqi Mao, Jingqiu Spatial and temporal variability of brown carbon in United States: implications for direct radiative effects |
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A newly developed dataset from the Interagency Monitoring of PROtected Visual Environments (IMPROVE) observation network, combined with a 3-D chemical transport model, is used to evaluate the spatial and temporal variability of brown carbon (BrC) in the United States. The model with BrC emitted from biomass burning and biofuel emissions agrees with the seasonal and spatial variability of BrC planetary boundary layer (PBL) absorption aerosol optical depth (AAOD) observations within a factor of 2. The model without whitening, the tendency for absorption to decrease with aerosol aging, overestimates the observed BrC PBL AAOD, and does not reflect the measured BrC PBL AAOD spatial variability. The model shows higher absorption direct radiative effects (DRE) from BrC at northern high latitudes than at mid-latitudes in spring and summer, due to boreal fire emissions, long whitening lifetimes and high surface albedos. These findings highlight the need to study BrC over the Arctic region. |
format |
Text |
author |
June, Nicole Wang, Xuan Chen, L.-W. Antony Chow, Judith C. Watson, John G. Wang, Xiaoliang Henderson, Barron H. Zheng, Yiqi Mao, Jingqiu |
author_facet |
June, Nicole Wang, Xuan Chen, L.-W. Antony Chow, Judith C. Watson, John G. Wang, Xiaoliang Henderson, Barron H. Zheng, Yiqi Mao, Jingqiu |
author_sort |
June, Nicole |
title |
Spatial and temporal variability of brown carbon in United States: implications for direct radiative effects |
title_short |
Spatial and temporal variability of brown carbon in United States: implications for direct radiative effects |
title_full |
Spatial and temporal variability of brown carbon in United States: implications for direct radiative effects |
title_fullStr |
Spatial and temporal variability of brown carbon in United States: implications for direct radiative effects |
title_full_unstemmed |
Spatial and temporal variability of brown carbon in United States: implications for direct radiative effects |
title_sort |
spatial and temporal variability of brown carbon in united states: implications for direct radiative effects |
publishDate |
2020 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8353956/ http://www.ncbi.nlm.nih.gov/pubmed/34381286 https://doi.org/10.1029/2020gl090332 |
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Arctic |
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Arctic |
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Arctic |
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Geophys Res Lett |
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8353956/ http://www.ncbi.nlm.nih.gov/pubmed/34381286 http://dx.doi.org/10.1029/2020gl090332 |
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https://doi.org/10.1029/2020gl090332 |
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Geophysical Research Letters |
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47 |
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23 |
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1766335887632760832 |