Current Research Projects:

  • IMPROVE (Interagency Monitoring of Protected Visual Environments) Program.
  • Measurements of trace elements in the air using Rotating Drum Impactor (RDI) and X-ray fluorescence (XRF) at the Advanced Light Source (ALS) in Lawrence Berkeley National Laboratory (LBNL).
  • Black Carbon mass concentrations in polar region (Barrow, Alaska in USA, Alert, Nunavut in Canada, and Baranoba in Russia).
  • Agricultural Air Quality Monitoring using Mobile Agricultural Air Quality (MAAQ) Lab.

Previous Research Projects:

Stratospheric Ozone measurements

  • Measurements of vertical ozone profiles over Antarctic by ozonesondes at Zhongshan station, 1991-1993.
  • Analysis of ozonesonde data obtained at Syowa station in Antarctic, 1993-1999.
  • Measurements of ozone column and profile by ground-based FTIR spectrometers and retrievals of the FTIR spectra in Japan and Kiruna, 1995-2001.

Participating in Aircraft missions:

  • Analysis of aircraft data obtained during PEM-West A and B experiments, 1994-1995.
  • SONEX (Subsonic assessment Ozone and NOx Experiment) in 1997.
  • BIBLE-A (Biomass Burning and Lightning Experiment, Phase A) in 1998.
  • BIBLE-B (Biomass Burning and Lightning Experiment, Phase B) in 1999.
  • SOLVE (SAGE III Ozone Loss and Validation Experiment) in 1999.
  • Trace-P (Transport and Chemical Evolution over the Pacific) in 2001.
  • ARCTAS (Arctic Research of the Composition of the Troposphere from Aircraft and Satellites) in 2008-2009.
  • DISCOVER - AQ/California: Size-Resolved Aerosol Composition and Optics Sampling and Analysis, 2012-2013.

 Infrared solar spectroscopy:

  • Long-term measurements of stratospheric and tropospheric species using ground-based FTIR spectrometers in Japan since 1995.
  • NDSC (Network of the Detection for Stratospheric Changes) Infrared work group (IRWG) from 1995 to 2001.
  • Validation of satellites MAPS and MOPITT measurements in 1996 and 2001.
  • Cooperation research in FTIR data analysis in Department of Physics, University of Denver, in October 1997.
  • Cooperation research in FTIR data analysis at National Institute of Water and Atmospheric Research Inc, New Zealand in April 1999.
  • Setting-up the Toronto Atmospheric Observatory (TAO) at the University of Toronto, 1999-2001.
  • Measurements of N2O and CO emissions from Silage 2012-2016.
  • Cooperation research in FTIR data analysis at the Karlsruhe Institute of Technology, Institute of Meteorology and Climate Research, Germany in July 2015.

Atmospheric Aerosols and their health effects:

  • USEPA Supersite programs in Pittsburgh, PA, 2001-2002.
  • USEPA Supersite programs in Baltimore, MD, 2001-2002.
  • Evaluation of VACES aerosol concentrator in 2001, 2003 and 2006.
  • Observations of nucleation events in UC Davis Bodega-bay Marine Laboratory (BML) 2004-2005
  • Development of improved VACES aerosol concentrator, 2006-2007
  • San Joaquin Valley Aerosol Health Effects Research Center (SAHERC), 2005-2010.
  • Toxicity of Source-Oriented Ambient Aerosol, 2007-2010.
  • Set-up of air sampling system at the Caldecott Tunnel, 2015-2016.

Rotary Drum Impactor (RDI) Sampler & XRF

  • Intercontinental Transport of Particulate Matter from Asia to the United States 2002-2006.
  • Quality Assurance Analysis of Filters for the Lake Tahoe Air shed Deposition Study, 2004-2005.
  • Air Pollution Impacts from Airport Activity, 2008-2010.
  • 7-SEAS Study, 2009-2010.
  • Aerosol Measurements and Source Identification in Support of the Southern California Sulfur Study Companion to CalNex 2010-2014.
  • RDI-MOUDI-IMPROVE Inter-comparison, 2012-2014.
  • Nevada Rural Ozone Initiative – Aerosol Sampling and Air Mass Source Identification, 2013-2017.

Air quality studies in China

  • PRIDE-PRD 2006 summer campaign in Pearls River Delta area, 2006.
  • CARBEIJING-2006 summer campaign in Beijing, 2006.
  • Long-term measurements of elemental carbon (EC) and organic carbon (OC) in Beijing together with carbon monoxide (CO) and carbon dioxide (CO2) 2005-2010.
  • Measurements of black carbon in Beijing using COSMOS, 2010-2015.

Agricultural Air quality studies

  • Estimating and Reducing Air Emissions from Dairy Feeding Operations, 2006-2009.
  • National Air Emissions Monitoring Study (NAEMS). 2007-2010.
  • Respiratory Exposures and Health of Workers on California Dairies, 2006-2011.
  • Reducing Dairy Silage Emissions for Improved Air Quality and Productivity, 2012-2015.
  • Good Clinical Study (GCP): Effect of Feeding LY488756 on Environmental Emissions when fed to Finishing Beef Cattle for 91 Days, 2012-2017
  • Design and build the Mobile Agricultural Air Quality Laboratory, 2011-2013.