|
PROFESSIONAL INTERESTS:
Dr. Chen’s research interests include studying sources, evolution, and
environmental impacts of atmospheric trace gases and aerosols, through
field/laboratory experiments and receptor modeling. Dr. Chen conducted the
Maryland Aerosol Regional Characterization (MARCH-Atlantic) study, wherein
he developed a source apportionment technique coupling factor and ensemble
air parcel back trajectory analyses. He is currently involved in the PM2.5
and VOCs source apportionment projects in Hong Kong, China, California,
and the U.S. east coast. Particular focus of his research is on improving
techniques for the quantification of light-absorbing carbonaceous aerosol.
Dr. Chen has been investigating various thermal evolution methods as well
as in-situ or time-integrated optical measurements. This research provides
insights into the current emission inventories and radiative forcing
estimates.
SELECTED PUBLICATIONS:
- Chen, L-W. A, J. C. Chow, J. G. Watson, H. Moosmüller, and W. P.
Arnott, 2004:
- Modeling reflectance and transmittance of quartz-fiber filter
samples containing elemental carbon particles: Implications for
thermal/optical analysis. J. Aerosol Sci., 35(6), 765-780.
- Louie, P. K.K., J. C. Chow, L.-W. A. Chen, J. G. Watson, G. Leunga,
and D. W.M. Sin, 2005:
- PM2.5 chemical composition in Hong Kong: urban and
regional variations. Sci. Total Environ., in press.
- Louie, P. K.K., J. G. Watson, J. C. Chow, L.-W. A. Chen, D. W.M.
Sin, and A. K.H. Laud, 2005:
- Seasonal characteristics and regional transport of PM2.5 in Hong
Kong. Atmos. Environ., in press.
- Chow J. C., J. G. Watson, L.-W. A. Chen, H. Moosmüller, W. P.
Arnott, and K. K. Fung, 2004:
- Equivalence of elemental carbon measured by thermal/optical
reflectance and transmittance methods with different temperature
protocols. Environ. Sci. Tech., 38(16), 4414-4422.
- Chen, L.-W. A., J. C. Chow, B. G. Doddridge, R. R. Dickerson, W. F.
Ryan, and P. K. Mueller, 2003:
- Analysis of a summertime PM2.5 and Haze Episode in the
Mid-Atlantic Region. J. Air & Waste Manage. Assoc.,
53(8), 946-956, 2003.
- Chen, L.-W. A., B. G. Doddridge, R. R. Dickerson, J. C. Chow, and R.
C. Henry, 2002:
- Origins of fine aerosol mass in the Baltimore-Washington corridor:
Implications from observations, factor analysis, and air parcel back
trajectories. Atmos. Environ., 36(28), 4541-4554.
- Chen, L.-W. A., B. G. Doddridge, R. R. Dickerson, P. K. Mueller, J.
C. Chow, and W. A. Butler, 2001:
- Seasonal variations in elemental carbon aerosol, carbon monoxide,
and sulfur dioxide: Implications for sources. Geophys. Res.
Ltrs., 28(9), 1711-1714.
- Chen, L.-W. and Y.-L. Wang, 1999:
- Dual electron/ion source, United States Patent, Patent # US
005977549, Department of Commerce, USA.
- Chen, L.-W. and Y.-L. Wang, 1998:
- Operation of a single column focused ion/electron beam system based
on a dual ion/electron source. Applied Physics Letters,
73, 2212-2215.
- Chen, L.-W. and Y.-L. Wang, 1998: Stable field-induced electron
emission from a solidified liquid metal ion source. Applied Physics
Letters, 72, 389-392.
|
