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dc.contributor.authorDavis, Shannon R.  Concept link
dc.contributor.authorTalbot, Robert  Concept link
dc.contributor.authorMao, Huiting  Concept link
dc.contributor.authorNeuman, Jonathan A.  Concept link
dc.identifier.citationAtmosphere 5 (2014): 973-1001en_US
dc.description© The Author(s), 2014. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Atmosphere 5 (2014): 973-1001, doi:10.3390/atmos5040973.en_US
dc.description.abstractAn analysis of coastal meteorological mechanisms facilitating the transit pollution plumes emitted from sources in the Northeastern U.S. was based on observations from the International Consortium for Atmospheric Research on Transport and Transformation (ICARTT) 2004 field campaign. Particular attention was given to the relation of these plumes to coastal transport patterns in lower tropospheric layers throughout the Gulf of Maine (GOM), and their contribution to large-scale pollution outflow from the North American continent. Using measurements obtained during a series of flights of the National Oceanic & Atmospheric Administration (NOAA) WP-3D and the National Aeronautics and Space Administration (NASA) DC-8, a unique quasi-Lagrangian case study was conducted for a freshly emitted plume emanating from the New York City source region in late July 2004. The development of this plume stemmed from the accumulation of boundary layer pollutants within a coastal residual layer, where weak synoptic conditions allowed for its advection into the marine troposphere and transport by a mean southwesterly flow. Upon entering the GOM, analysis showed that the plume layer vertical structure evolved into an internal boundary layer form, with signatures of steep vertical gradients in temperature, moisture and wind speed often resulting in periodic turbulence. This structure remained well-defined during the plume study, allowing for the detachment of the plume layer from the surface and minimal plume-sea surface exchange. In contrast, shear driven turbulence within the plume layer facilitated lateral mixing with other low-level plumes during its transit. This turbulence was periodic and further contributed to the high spatial variability in trace gas mixing ratios. Further influences of the turbulent mixing were observed in the impact of the plume inland as observed by the Atmospheric Investigation, Regional Modeling, Analysis and Prediction (AIRMAP) air quality network. This impact was seen as extreme elevations of surface ozone and CO levels, equaling the highest observed that summer.en_US
dc.description.sponsorshipFinancial support for this work was from the NOAA Office of Oceanic and Atmospheric Research under grant #NA07OAR4600514. - See more at:
dc.publisherMDPI AGen_US
dc.rightsAttribution 4.0 International*
dc.subjectAtmospheric physicsen_US
dc.subjectContinental outflowen_US
dc.subjectTrace gas transporten_US
dc.subjectBoundary layersen_US
dc.subjectICARTT campaignen_US
dc.subjectNew Englanden_US
dc.subjectNorth Atlanticen_US
dc.subjectRegional climateen_US
dc.titleMeteorological influences on trace gas transport along the North Atlantic coast during ICARTT 2004en_US

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Attribution 4.0 International
Except where otherwise noted, this item's license is described as Attribution 4.0 International