Four-dimensional variational inversion of black carbon emissions during ARCTAS-CARB with WRFDA-Chem
Biomass burning emissions of atmospheric aerosols, including black carbon, are growing due to increased global drought, and comprise a large source of uncertainty in regional climate and air quality studies. We develop and apply new incremental four-dimensional variational (4D-Var) capabilities in W...
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ftdoajarticles:oai:doaj.org/article:195190b0eee54985a8bc2f388f3bc501 2023-05-15T15:15:24+02:00 Four-dimensional variational inversion of black carbon emissions during ARCTAS-CARB with WRFDA-Chem J. J. Guerrette D. K. Henze 2017-06-01T00:00:00Z https://doi.org/10.5194/acp-17-7605-2017 https://doaj.org/article/195190b0eee54985a8bc2f388f3bc501 EN eng Copernicus Publications http://www.atmos-chem-phys.net/17/7605/2017/acp-17-7605-2017.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-17-7605-2017 1680-7316 1680-7324 https://doaj.org/article/195190b0eee54985a8bc2f388f3bc501 Atmospheric Chemistry and Physics, Vol 17, Pp 7605-7633 (2017) Physics QC1-999 Chemistry QD1-999 article 2017 ftdoajarticles https://doi.org/10.5194/acp-17-7605-2017 2022-12-31T01:17:35Z Biomass burning emissions of atmospheric aerosols, including black carbon, are growing due to increased global drought, and comprise a large source of uncertainty in regional climate and air quality studies. We develop and apply new incremental four-dimensional variational (4D-Var) capabilities in WRFDA-Chem to find optimal spatially and temporally distributed biomass burning (BB) and anthropogenic black carbon (BC) aerosol emissions. The constraints are provided by aircraft BC concentrations from the Arctic Research of the Composition of the Troposphere from Aircraft and Satellites in collaboration with the California Air Resources Board (ARCTAS-CARB) field campaign and surface BC concentrations from the Interagency Monitoring of PROtected Visual Environment (IMPROVE) network on 22, 23, and 24 June 2008. We consider three BB inventories, including Fire INventory from NCAR (FINN) v1.0 and v1.5 and Quick Fire Emissions Database (QFED) v2.4r8. On 22 June, aircraft observations are able to reduce the spread between a customized QFED inventory and FINNv1.0 from a factor of 3. 5 ( × 3. 5) to only × 2. 1. On 23 and 24 June, the spread is reduced from × 3. 4 to × 1. 4. The posterior corrections to emissions are heterogeneous in time and space, and exhibit similar spatial patterns of sign for both inventories. The posterior diurnal BB patterns indicate that multiple daily emission peaks might be warranted in specific regions of California. The US EPA's 2005 National Emissions Inventory (NEI05) is used as the anthropogenic prior. On 23 and 24 June, the coastal California posterior is reduced by × 2, where highway sources dominate, while inland sources are increased near Barstow by × 5. Relative BB emission variances are reduced from the prior by up to 35 % in grid cells close to aircraft flight paths and by up to 60 % for fires near surface measurements. Anthropogenic variance reduction is as high as 40 % and is similarly limited to sources close to observations. We find that the 22 June aircraft observations are able to ... Article in Journal/Newspaper Arctic black carbon Directory of Open Access Journals: DOAJ Articles Arctic Finn ENVELOPE(12.739,12.739,65.935,65.935) Atmospheric Chemistry and Physics 17 12 7605 7633 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 J. J. Guerrette D. K. Henze Four-dimensional variational inversion of black carbon emissions during ARCTAS-CARB with WRFDA-Chem |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
Biomass burning emissions of atmospheric aerosols, including black carbon, are growing due to increased global drought, and comprise a large source of uncertainty in regional climate and air quality studies. We develop and apply new incremental four-dimensional variational (4D-Var) capabilities in WRFDA-Chem to find optimal spatially and temporally distributed biomass burning (BB) and anthropogenic black carbon (BC) aerosol emissions. The constraints are provided by aircraft BC concentrations from the Arctic Research of the Composition of the Troposphere from Aircraft and Satellites in collaboration with the California Air Resources Board (ARCTAS-CARB) field campaign and surface BC concentrations from the Interagency Monitoring of PROtected Visual Environment (IMPROVE) network on 22, 23, and 24 June 2008. We consider three BB inventories, including Fire INventory from NCAR (FINN) v1.0 and v1.5 and Quick Fire Emissions Database (QFED) v2.4r8. On 22 June, aircraft observations are able to reduce the spread between a customized QFED inventory and FINNv1.0 from a factor of 3. 5 ( × 3. 5) to only × 2. 1. On 23 and 24 June, the spread is reduced from × 3. 4 to × 1. 4. The posterior corrections to emissions are heterogeneous in time and space, and exhibit similar spatial patterns of sign for both inventories. The posterior diurnal BB patterns indicate that multiple daily emission peaks might be warranted in specific regions of California. The US EPA's 2005 National Emissions Inventory (NEI05) is used as the anthropogenic prior. On 23 and 24 June, the coastal California posterior is reduced by × 2, where highway sources dominate, while inland sources are increased near Barstow by × 5. Relative BB emission variances are reduced from the prior by up to 35 % in grid cells close to aircraft flight paths and by up to 60 % for fires near surface measurements. Anthropogenic variance reduction is as high as 40 % and is similarly limited to sources close to observations. We find that the 22 June aircraft observations are able to ... |
format |
Article in Journal/Newspaper |
author |
J. J. Guerrette D. K. Henze |
author_facet |
J. J. Guerrette D. K. Henze |
author_sort |
J. J. Guerrette |
title |
Four-dimensional variational inversion of black carbon emissions during ARCTAS-CARB with WRFDA-Chem |
title_short |
Four-dimensional variational inversion of black carbon emissions during ARCTAS-CARB with WRFDA-Chem |
title_full |
Four-dimensional variational inversion of black carbon emissions during ARCTAS-CARB with WRFDA-Chem |
title_fullStr |
Four-dimensional variational inversion of black carbon emissions during ARCTAS-CARB with WRFDA-Chem |
title_full_unstemmed |
Four-dimensional variational inversion of black carbon emissions during ARCTAS-CARB with WRFDA-Chem |
title_sort |
four-dimensional variational inversion of black carbon emissions during arctas-carb with wrfda-chem |
publisher |
Copernicus Publications |
publishDate |
2017 |
url |
https://doi.org/10.5194/acp-17-7605-2017 https://doaj.org/article/195190b0eee54985a8bc2f388f3bc501 |
long_lat |
ENVELOPE(12.739,12.739,65.935,65.935) |
geographic |
Arctic Finn |
geographic_facet |
Arctic Finn |
genre |
Arctic black carbon |
genre_facet |
Arctic black carbon |
op_source |
Atmospheric Chemistry and Physics, Vol 17, Pp 7605-7633 (2017) |
op_relation |
http://www.atmos-chem-phys.net/17/7605/2017/acp-17-7605-2017.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-17-7605-2017 1680-7316 1680-7324 https://doaj.org/article/195190b0eee54985a8bc2f388f3bc501 |
op_doi |
https://doi.org/10.5194/acp-17-7605-2017 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
17 |
container_issue |
12 |
container_start_page |
7605 |
op_container_end_page |
7633 |
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1766345771909644288 |