HR: 1330h
AN: A12B-0091 [PDF]
TI: The Coastal Stratocumulus Imposed Perturbation Experiment: Discerning aerosol indirect effects in
stratocumulus clouds using imposed aerosol forcing
AU: * Conant, W C
EM: wconant@caltech.edu
AF: California Institute of Technology, Environmental Science and Engineering, Pasadena, CA 91125
AU: Seinfeld, J H
EM: seinfeld@caltech.edu
AF: California Institute of Technology, Environmental Science and Engineering, Pasadena, CA 91125
AU: Flagan, R C
EM: flagan@caltech.edu
AF: California Institute of Technology, Environmental Science and Engineering, Pasadena, CA 91125
AU: Bahreini, R
EM: broya@caltech.edu
AF: California Institute of Technology, Environmental Science and Engineering, Pasadena, CA 91125
AU: Rissman, T A
EM: rissman@caltech.edu
AF: California Institute of Technology, Environmental Science and Engineering, Pasadena, CA 91125
AU: Varutbangkul, V
EM: tomtor@caltech.edu
AF: California Institute of Technology, Environmental Science and Engineering, Pasadena, CA 91125
AU: Lu, M
EM: julialu@its.caltech.edu
AF: California Institute of Technology, Environmental Science and Engineering, Pasadena, CA 91125
AU: Jonsson, H H
EM: hjonsson@nps.navy.mil
AF: CIRPAS, United States Naval Postgraduate School, 3200 Imjin Rd., Marina, CA 93933
AU: Buzorius, G
EM: gbuzoriu@nps.navy.mil
AF: CIRPAS, United States Naval Postgraduate School, 3200 Imjin Rd., Marina, CA 93933
AU: Durkee, P A
EM: durkee@nps.navy.mil
AF: United States Naval Postgraduate School, 1 University Circle, Monterey, CA 93943
AU: Nielsen, K
EM: nielsen@nps.navy.mil
AF: United States Naval Postgraduate School, 1 University Circle, Monterey, CA 93943
AU: Bucholtz, A
EM: bucholtz@nrlmry.navy.mil
AF: Naval Research Laboratory, 7 Grace Hopper
Stop 2, Monterey, CA 93943-5502
AU: Termuende, A
EM: aterm73@hotmail.com
AF: Iowa State University, 131 Bessey Hall, Ames, IA 50011
AU: Tschudi, M A
EM: tschudi@ucar.edu
AF: National Center for Atmospheric Research, RAF/ATD
10802 Airport Court, Broomfield, CO 80021
AU: Albrecht, B A
EM: balbrecht@rsmas.miami.edu
AF: University of Miami, Rosenstiel Schl Marine & Atmos Sci, Miami, CA 33149
AU: Kollias, P
EM: pkollias@rsmas.miami.edu
AF: University of Miami, Rosenstiel Schl Marine & Atmos Sci, Miami, CA 33149
AU: Cairns, B
EM: bcairns@giss.nasa.gov
AF: NASA Goddard Institute for Space Sciences, 2880 Broadway, New York, NY 10025
AU: Chuang, P Y
EM: pchuang@es.ucsc.edu
AF: University of California, Santa Cruz, Dept. of Earth Sciences
1156 High St., Santa Cruz, CA 95064
AU: Small, J
EM: jsmall@es.ucsc.edu
AF: University of California, Santa Cruz, Dept. of Earth Sciences
1156 High St., Santa Cruz, CA 95064
AU: Arnott, W P
EM: pat@dri.edu
AF: Desert Research Institute, Div. Atmospheric Sciences
2215 Raggio Pkwy, Reno, NV 89512
AU: Walker, J W
EM: john_william_walker@msn.com
AF: Desert Research Institute, Div. Atmospheric Sciences
2215 Raggio Pkwy, Reno, NV 89512
AU: Kok, G L
EM: glkok@dropletmeasurement.com
AF: Droplet Measurement Technologies, 2400 Central Ave, Ste A, Boulder, CO 80301
AB:
This poster overviews the strategy and preliminary results from the CSTRIPE experiment (Coastal Stratocumulus Imposed
Perturbation Experiment), conducted in Monterey, CA in July 2003. The goal of the study was to create imposed perturbations
in marine stratocumulus using artificially introduced aerosol sources, and to quantify the resulting indirect effects on
stratocumuolus microphysics, albedo, precipitation, and structure. The imposed perturbations include hygroscopic salt flares
burned by a separate aircraft and emissions from shipping traffic. The CIRPAS Twin Otter aircraft carried a suite of
instruments chosen to perform a number of closure studies on aerosol-cloud-radiation interactions. These include: three
aerosol sizing instruments collectively spanning 13 nm - ~10 $\mu$m; the Caltech 3-column CCN spectrometer; an Aerodyne
aerosol mass spectrometer; three cloud microphysics probes; three light absoprtion instruments (U. Washington modified PSAP,
DRI photoacoustic, DMT SP-2); the U. Miami 95 GHz cloud radar; the NCAR Multi-channel scanning radiometer; and upward and
downward facing pyranometers including a stabilized platform for reliable measurements of albedo. On five days, a separate
aircraft carrying the NASA GISS Research Scanning Polarimeter overflew the Twin Otter. This instrument suite provides
sufficient information to perform closure studies on models of cloud condensation nucleus properties (aerosol-CCN closure),
cloud activation processes (aerosol-cloud closure), and cloud radiative properties (cloud-radiation closure).
UR: http://www.cstripe.caltech.edu/
DE: 0305 Aerosols and particles (0345, 4801)
DE: 0320 Cloud physics and chemistry
DE: 0345 Pollution--urban and regional (0305)
DE: 1610 Atmosphere (0315, 0325)
DE: 3359 Radiative processes
SC: Atmospheric Sciences [A]
MN: 2003 Fall Meeting