Aaron Van Donkelaar, All V. Martin, Rokjin J. Park
ground-level PM2.5 with aerosol optical depth determined from satellite remote sensing
Rokjin J. Park, Daniel J. Jacob, Naresh Kumar, Robert M. Yantosca
reduction in U.S. anthropogenic emissions to achieve linear improvement of visibility in wilderness areas over the 2004-2018 period toward an endpoint of natural visibility conditions by 2064. Linear...
Rokjin J. Park, Daniel J. Jacob, Mian Chin, All V. Martin
Abstract. We use a global 3-D model simulation of elemental carbon (EC) and organic carbon (OC) aerosols to interpret year-round observations for 1998 at a network of 45 U.S. sites (IMPROVE) and from...
Rokjin J. Park, Daniel J. Jacob, Mian Chin, All V. Martin
Abstract. We use a global 3-D model (GEOS-CHEM) to better quantify the sources of elemental carbon (EC) and organic carbon (OC) aerosols in the United States through simulation of year-round...
United States: A case study of the South American wildland fire of May 1998. (2009)
Hee-jin In, Daewon W. Byun, Rokjin J. Park, Nan-kyoung Moon, Soontae Kim, Sharon Zhong, ...
of trans-boundary transport of carbonaceous aerosols on the regional air quality in the
Surface ozone background in the United States: Canadian and Mexican pollution influences (2009)
Huiqun Wang, Daniel J. Jacob, David G. Streets, Rokjin J. Park, Alice B. Gillil, A. Van Donkelaar
We use a global chemical transport model (GEOS-Chem) with 1 o x1 o horizontal resolution to quantify the effects of anthropogenic emissions from Canada, Mexico, and outside North America on daily...
Becky Alexander, Rokjin J. Park, Daniel J. Jacob, Sunling Gong
We use observations of the oxygen-17 excess (Δ 17 O) of sulfate in the Arctic to quantify the sulfate source from aqueous SO2 (S(IV)) oxidation by O2 catalyzed by transition metals. Due to the lack...
Jun Wang, Andrew A. Hoffmann, Rokjin J. Park, Daniel J. Jacob, Scot T. Martin
[1] The partitioning between solid and aqueous phases of tropospheric sulfate-ammonium particles is simulated with a global 3-D chemical transport model (CTM). The simulation explicitly accounts for...
Click Here for Full Article Air-sea exchange in the global mercury cycle (2008)
Sarah A. Strode, Lyatt Jaeglé, Noelle E. Selin, Daniel J. Jacob, Rokjin J. Park, Robert M. Yantosca, ...
[1] We present results from a new global atmospheric mercury model coupled with a mixed layer slab ocean. The ocean model describes the interactions of the mixed layer with the atmosphere and deep...
Click Here for Full Article (2008)
Aaron Van Donkelaar, All V. Martin, Rokjin J. Park
Estimating ground-level PM 2.5 using aerosol optical depth determined from satellite remote sensing
Colette L. Heald, Daniel J. Jacob, Rokjin J. Park, Lynn M. Russell, Barry J. Huebert, John H. Seinfeld, ...
large organic aerosol source in the free troposphere missing from
Yang Liu, Rokjin J. Park, Daniel J. Jacob, Qinbin Li, Vasu Kilaru, Jeremy A. Sarnat
Mapping annual mean ground-level PM 2.5 concentrations using
Noelle E. Selin, Daniel J. Jacob, Rokjin J. Park, Robert M. Yantosca, Sarah Strode, Lyatt Jaeglé, ...
[1] We use a global 3-D model of atmospheric mercury (GEOS-Chem) to interpret worldwide observations of total gaseous mercury (TGM) and reactive gaseous mercury (RGM) in terms of the constraints they...
Rokjin J. Park, Daniel J. Jacob, Mian Chin, Randall V. Martin
[1] We use a global three-dimensional model (GEOS-CHEM) to better quantify the sources of elemental carbon (EC) and organic carbon (OC) aerosols in the United States through simulation of year-round...
United States and Europe (Interagency Monitoring of Protected Visual Environments (2008)
Rokjin J. Park, Daniel J. Jacob, Brendan D. Field, Robert M. Yantosca, Mian Chin
[1] We use a global three-dimensional coupled oxidant-aerosol model (GEOS-CHEM) to estimate natural and transboundary pollution influences on sulfate-nitrate-ammonium aerosol concentrations in the...
O. Russell, Dwight Atkinson, Thomas Braverman, Kevin Civerolo, Ashu Dastoor, Didier Davignon, ...
[1] An atmospheric mercury model intercomparison study has been conducted to compare three regional-scale atmospheric mercury models, CMAQ, REMSAD, and TEAM, in a tightly constrained testing...
Rokjin J. Park, Daniel J. Jacob, Jennifer A. Logan
Fire and biofuel contributions to annual mean aerosol mass concentrations in the United States
Air-sea exchange in the global mercury cycle, Glob (2007)
Sarah A. Strode, Lyatt Jaeglé, Noelle E. Selin, Daniel J. Jacob, Rokjin J. Park, Robert M. Yantosca, ...
Abstract. We present results from a new global atmospheric mercury model coupled with a 2
Transpacific transport of Asian anthropogenic aerosols and its impact (2006)
Colette L. Heald, Daniel J. Jacob, Rokjin J. Park, Becky Alex, T. Duncan Fairlie, Robert M. Yantosca, ...
on surface air quality in the United States
Export efficiency of black carbon aerosol in continental outflow: Global implications (2005)
Rokjin J. Park, Daniel J. Jacob, Paul I. Palmer, Antony D. Clarke, Rodney J. Weber, Mark A. Zondlo, ...
[1] We use aircraft observations of Asian outflow from the NASATransport and Chemical Evolution over the Pacific (TRACE-P) mission over the NW Pacific in March–April 2001 to estimate the export...
Dominick V. Spracklen, Jennifer A. Logan, Loretta J. Mickley, Rokjin J. Park, Rosemarie Yevich, Anthony L. Westerling, ...
[1] Forest wildfire area burned in the western U.S. has increased in recent decades resulting in a substantial organic carbon (OC) source with large interannual variability. We derive OC emissions...