NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
A51F-0123: Model Analysis of Tropospheric Aerosol Variability and Sources over the North Atlantic During NAAMES 2015-2016The North Atlantic Aerosols and Marine Ecosystems Study (NAAMES) is a five-year Earth-Venture Suborbital-2 Mission to characterize the plankton ecosystems and their influences on remote marine aerosols, boundary layer clouds, and their implications for climate in the North Atlantic. While marine-sourced aerosols have been shown to make important contributions to surface aerosol loading, cloud condensation nuclei and ice nuclei concentrations over remote marine and coastal regions, it is still a challenge to differentiate the marine biogenic aerosol signal from the strong influence of continental pollution outflow. We examine here the spatiotemporal variability and quantify the sources of tropospheric aerosols over the North Atlantic during the first two phases (November 2015 and May-June 2016) of NAAMES using a state-of-the-art chemical transport model (GEOS-Chem). The model is driven by the Modern-Era Retrospective analysis for Research and Applications, Version 2 (MERRA-2) from the NASA Global Modeling and Assimilation Office (GMAO). It includes sulfate-nitrate-ammonium aerosol thermodynamics coupled to ozone-NOx-hydrocarbon-aerosol chemistry, mineral dust, sea salt, elemental and organic carbon aerosols, and especially a recently implemented parameterization for the marine primary organic aerosol emission. The simulated aerosols over the North Atlantic are evaluated with available satellite (e.g., MODIS) observations of aerosol optical depths (AOD), and aircraft and ship aerosol measurements. We diagnose transport pathways for continental pollution outflow over the North Atlantic using carbon monoxide, an excellent tracer for anthropogenic pollution transport. We also conduct model perturbation experiments to quantify the relative contributions of terrestrial and oceanic sources to the aerosol loading, AOD, and their variability over the North Atlantic.
Document ID
20170001273
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Authors
Liu, Hongyu (National Inst. of Aerospace Hampton, VA, United States)
Moore, Richard (NASA Langley Research Center Hampton, VA United States)
Hostetler, Chris A. (NASA Langley Research Center Hampton, VA United States)
Ferrare, Richard Anthony (NASA Langley Research Center Hampton, VA United States)
Fairlie, Thomas Duncan (NASA Langley Research Center Hampton, VA United States)
Hu, Youngxiang (NASA Langley Research Center Hampton, VA United States)
Chen, Gao (NASA Langley Research Center Hampton, VA United States)
Hair, Johnathan W. (NASA Langley Research Center Hampton, VA United States)
Johnson, Matthew S. (NASA Ames Research Center Moffett Field, CA United States)
Date Acquired
February 3, 2017
Publication Date
December 12, 2016
Subject Category
Earth Resources And Remote Sensing
Report/Patent Number
ARC-E-DAA-TN38154
Meeting Information
Meeting: 2016 AGU Fall Meeting
Location: San Francisco, CA
Country: United States
Start Date: December 12, 2016
End Date: December 16, 2016
Sponsors: American Geophysical Union
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
aerosols
plankton ecosystems
model analysis

Related Records

IDRelationTitle20170000380See AlsoModel Analysis of Tropospheric Aerosol Variability and Sources over the North Atlantic During NAAMES 2015-2016
No Preview Available