TITLE: ACE-Asia Results from Surface Site at Gosan from Yu's group

Contact person: 

     Jian Zhen Yu
     Department of Chemistry
     Hong Kong University of Science & Technology
     Clear Water Bay, Kowloon
     Hong Kong
     Tel: 852-2358-7389
     Fax: 852-2358-1594
     Email: chjianyu@ust.hk

1.0 DATA SET OVERVIEW:

     This data set contains the results of mass and carbon species 
     analyses of aerosol samples collected at the ACE-Asia surface site 
     Gosan (Kosan) at Jeju Island, Korea (33.29N, 126.16E, 70m ASL). 
     Sampling started on March 24, 2001 and ended on April 28, 2001 
     (UTC). Aerosols were collected on a 24-hour schedule using a d-IAS 
     sampler (IMPROVE type) with a 2.5 um cut size cyclone (Malm et al. 
     1994), and a high-volume particle trap impactor-denuder filter 
     sampler (Mader et al. 2001). 

2.0 INSTRUMENT DESCRIPTION:

     OC, EC, and water-soluble organic carbon (WSOC) (Yang et al. 2003) 
     concentrations were measured using a thermal/optical carbon 
     analyzer (Sunset laboratory, Forest Grove, OR, USA).

3.0 DATA FORMAT:

     All data is archived in tab delimited text files. The data version 
     is V1.0 and the version date is 12-08-02.

4.0 DATA REMARKS:

     These results are preliminary pending final validation and 
     verification. THE CUT SIZE AND THE PARTICLE TRANSMISSION EFFICIENCY 
     OF THE HIGH-VOLUME PARTICLE TRAP IMPACTOR-DENUDER FILTER SAMPLER 
     ARE SUBJECT TO REVISION.

5.0 REFERENCES:

     Birch, M. E., Cary, R. A., 1996. Elemental carbon-based method for 
     monitoring occupational exposures to particulate diesel exhaust. 
     Aerosol Science and Technology 25, 221-241

     Mader, B.T., Flagan, R.C., Seinfeld, J.H., 2001. Sampling atmospheric 
     carbonaceous aerosols using a particle trap impactor/denuder sampler. 
     Environmental Science and Technology 351, 4857-4867. 

     Malm, W. C., Sisler, J.F., Huffman, D., Eldred, R.A., and Cahill, 
     T.A., 1994. Spatial and Seasonal Trends in Particle Concentration and 
     Optical Extinction in the United States. J. Geophys. Res. 99, 
     1347-1370.

     H. Yang, Q. Li, and J. Z. Yu, 2003. Comparison of Two Methods for the 
     Determination of Water-Soluble Organic Carbon in Atmospheric 
     Particles. Atmos. Environ., in press.