ISCAT 1998 Field Season South Pole Observations of NO, OH, MSA, H2SO4, DMS, SO2,and NMHC

The 1998 - 1999 ISCAT South Pole observational data are available on one CD-
ROM. The aerosol data, trace gas data, and photolyitc rate
coefficients are separated into three directories: Aerosol,
TraceGases, and j-values. In the TraceGases directory, there are
three ASCII data files and corresponding readme files describing the
data format, measurement techniques, precisions and accuracies, and
detection limits. The data files are organized according to the
sensors/measurement techniques. Detailed description of project ISCAT
can be found in the special section in GRL October 1, 2000. The ISCAT
data CD is available by contacting Douglas D. Davis:

Dr. Douglas D. Davis
221 Bobby Dodd Way
School of Earth and Atmospheric Sciences
Georgia Institute of Technology
Atlanta, GA 30332
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]

The ISCAT 1998 field observations went from late November, 1998 to
early January, 1999 at the south pole. The measured trace gases
includes: NO, OH, MSA, H2SO4, DMS, and SO2. Most of ISCAT gas phase
sampling (i.e., NO, OH, MSA, H2SO4, DMS, and SO2) was from the second
floor of the Atmospheric Research Observatory (ARO) building. The
sampling lines extended 1 - 2 m from the building and were about 10
meter above the snow surface. Sampling from the ARO building was from
that side of the building facing the prevailing wind. This typically
was out of the "clean air sector" (0 - 120�, e.g., see Davis et
al. GRL, October 1, 2001).