AUTHORS:
Livingston, John M., Kapustin, Vladimir N., Schmid, Beat, Russell, Philip
B., Durkee,
Philip A., Bates, Timothy S., Quinn, Patricia K.
(JML) SRI International, Menlo Park, CA;
(VNK) University of Hawaii, Honolulu, HI;
(BS) Bay Area Environmental Research Institute, San Francisco, CA;
(PBR) NASA Ames Research Center, Moffett Field, CA;
(PAD) Naval Postgraduate School, Monterey, CA;
(TSB, PKQ) NOAA PMEL, Seattle, WA;
CONTACT: jlivingston@mail.arc.nasa.gov
CACGP ABSTRACT:
Shipboard Sunphotometer Measurements of Aerosol Optical Depth Spectra
during ACE-2
The NASA Ames six-channel airborne tracking sunphotometer (AATS-6) was operated
aboard the Research Vessel Vodyanitskiy during the North Atlantic Regional
Aerosol Characterization Experiment (ACE-2) in summer 1997. Although shipboard
operation presented new challenges to the instrument's automatic tracking
and data acquisition capabilities, careful analysis of the measurements
has resulted in the calculation of useful aerosol optical depth data for
at least ten days during the period 22 June - 23 July. Aerosol optical depth
spectra derived from AATS-6 measurements acquired during a variety of lower
tropospheric aerosol loading conditions will be discussed. Comparisons with
coincident optical depth spectra derived from airborne and/or satellite
radiometer measurements will be shown. Special emphasis will be given to
data acquired on 10 July, when coincident measurements were obtained with
the NASA Ames fourteen channel airborne tracking sunphotometer (AATS-14)
on the Pelican (modified Cessna) aircraft of the Center for Interdisciplinary
Remotely Piloted Aircraft Studies (CIRPAS) and with the spaceborne Advanced
Very High Resolution Radiometer (AVHRR). For selected cases, sunphotometer
aerosol optical depth spectra calculated for the marine boundary layer will
be compared with corresponding values calculated from coincident in-situ
aerosol size distribution measurements taken with a suite of shipboard NOAA
particle sampling instruments.
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Last updated July-20-2002