Transport of pollution to a remote coastal site during gap flow from California's interior: impacts on aerosol composition, clouds, and radiative balance

Transport of pollution to a remote coastal site during gap flow from California's interior: impacts on aerosol composition, clouds, and radiative balance

During the CalWater 2015 field campaign, ground-level observations of aerosol size, concentration, chemical composition, and cloud activity were made at Bodega Bay, CA, on the remote California coast. A strong anthropogenic influence on air quality, aerosol physicochemical properties, and cloud acti...

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Main Authors: A. C. Martin, G. C. Cornwell, S. A. Atwood, K. A. Moore, N. E. Rothfuss, H. Taylor, P. J. DeMott, S. M. Kreidenweis, M. D. Petters, K. A. Prather
Format: Article
Language:English
Published: Copernicus Publications 2017-01-01
Series:Atmospheric Chemistry and Physics
Online Access:http://www.atmos-chem-phys.net/17/1491/2017/acp-17-1491-2017.pdf
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spelling doaj-9d1d5f09f83049b5b621dfbdc0517bb42020-11-24T22:31:10ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242017-01-011721491150910.5194/acp-17-1491-2017Transport of pollution to a remote coastal site during gap flow from California's interior: impacts on aerosol composition, clouds, and radiative balanceA. C. Martin0G. C. Cornwell1S. A. Atwood2K. A. Moore3N. E. Rothfuss4H. Taylor5P. J. DeMott6S. M. Kreidenweis7M. D. Petters8K. A. Prather9Climate Atmospheric Science and Physical Oceanography, Scripps Institution of Oceanography, La Jolla, CA, USADepartment of Chemistry and Biochemistry, University of California San Diego, La Jolla, CA, USADepartment of Atmospheric Science, Colorado State University, Fort Collins, CO, USADepartment of Chemistry and Biochemistry, University of California San Diego, La Jolla, CA, USADepartment of Marine Earth and Atmospheric Sciences, North Carolina State University, Raleigh, NC, USADepartment of Marine Earth and Atmospheric Sciences, North Carolina State University, Raleigh, NC, USADepartment of Atmospheric Science, Colorado State University, Fort Collins, CO, USADepartment of Atmospheric Science, Colorado State University, Fort Collins, CO, USADepartment of Marine Earth and Atmospheric Sciences, North Carolina State University, Raleigh, NC, USAClimate Atmospheric Science and Physical Oceanography, Scripps Institution of Oceanography, La Jolla, CA, USADuring the CalWater 2015 field campaign, ground-level observations of aerosol size, concentration, chemical composition, and cloud activity were made at Bodega Bay, CA, on the remote California coast. A strong anthropogenic influence on air quality, aerosol physicochemical properties, and cloud activity was observed at Bodega Bay during periods with special weather conditions, known as Petaluma Gap flow, in which air from California's interior is transported to the coast. This study applies a diverse set of chemical, cloud microphysical, and meteorological measurements to the Petaluma Gap flow phenomenon for the first time. It is demonstrated that the sudden and often dramatic change in aerosol properties is strongly related to regional meteorology and anthropogenically influenced chemical processes in California's Central Valley. In addition, it is demonstrated that the change in air mass properties from those typical of a remote marine environment to properties of a continental regime has the potential to impact atmospheric radiative balance and cloud formation in ways that must be accounted for in regional climate simulations.http://www.atmos-chem-phys.net/17/1491/2017/acp-17-1491-2017.pdf
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language English
format Article
sources DOAJ
author A. C. Martin
G. C. Cornwell
S. A. Atwood
K. A. Moore
N. E. Rothfuss
H. Taylor
P. J. DeMott
S. M. Kreidenweis
M. D. Petters
K. A. Prather
spellingShingle A. C. Martin
G. C. Cornwell
S. A. Atwood
K. A. Moore
N. E. Rothfuss
H. Taylor
P. J. DeMott
S. M. Kreidenweis
M. D. Petters
K. A. Prather
Transport of pollution to a remote coastal site during gap flow from California's interior: impacts on aerosol composition, clouds, and radiative balance
Atmospheric Chemistry and Physics
author_facet A. C. Martin
G. C. Cornwell
S. A. Atwood
K. A. Moore
N. E. Rothfuss
H. Taylor
P. J. DeMott
S. M. Kreidenweis
M. D. Petters
K. A. Prather
author_sort A. C. Martin
title Transport of pollution to a remote coastal site during gap flow from California's interior: impacts on aerosol composition, clouds, and radiative balance
title_short Transport of pollution to a remote coastal site during gap flow from California's interior: impacts on aerosol composition, clouds, and radiative balance
title_full Transport of pollution to a remote coastal site during gap flow from California's interior: impacts on aerosol composition, clouds, and radiative balance
title_fullStr Transport of pollution to a remote coastal site during gap flow from California's interior: impacts on aerosol composition, clouds, and radiative balance
title_full_unstemmed Transport of pollution to a remote coastal site during gap flow from California's interior: impacts on aerosol composition, clouds, and radiative balance
title_sort transport of pollution to a remote coastal site during gap flow from california's interior: impacts on aerosol composition, clouds, and radiative balance
publisher Copernicus Publications
series Atmospheric Chemistry and Physics
issn 1680-7316
1680-7324
publishDate 2017-01-01
description During the CalWater 2015 field campaign, ground-level observations of aerosol size, concentration, chemical composition, and cloud activity were made at Bodega Bay, CA, on the remote California coast. A strong anthropogenic influence on air quality, aerosol physicochemical properties, and cloud activity was observed at Bodega Bay during periods with special weather conditions, known as Petaluma Gap flow, in which air from California's interior is transported to the coast. This study applies a diverse set of chemical, cloud microphysical, and meteorological measurements to the Petaluma Gap flow phenomenon for the first time. It is demonstrated that the sudden and often dramatic change in aerosol properties is strongly related to regional meteorology and anthropogenically influenced chemical processes in California's Central Valley. In addition, it is demonstrated that the change in air mass properties from those typical of a remote marine environment to properties of a continental regime has the potential to impact atmospheric radiative balance and cloud formation in ways that must be accounted for in regional climate simulations.
url http://www.atmos-chem-phys.net/17/1491/2017/acp-17-1491-2017.pdf
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