HR: 1340h
AN: B33B-1037 [Abstracts]
TI: Chemical Composition of Clouds in the Caribbean National Forest during the RICO Project
AU: Rodriguez, A I
EM: anarodz@ites.upr.edu
AF: Institute for Tropical Ecosystem Studies (ITES)
University of Puerto Rico, PO Box 21910, San Juan, PR 00931-1910
United States
AU: * Mayol-Bracero, O L
EM: omayol@adam.uprr.pr
AF: Institute for Tropical Ecosystem Studies (ITES)
University of Puerto Rico, PO Box 21910, San Juan, PR 00931-1910
United States
AU: Morales, F
EM: Flavia@adam.uprr.pr
AF: Institute for Tropical Ecosystem Studies (ITES)
University of Puerto Rico, PO Box 21910, San Juan, PR 00931-1910
United States
AU: Morales, R J
EM: rjmorales@uprrp.edu
AF: Institute for Tropical Ecosystem Studies (ITES)
University of Puerto Rico, PO Box 21910, San Juan, PR 00931-1910
United States
AU: Decesari, S
EM: S.Decesari@isac.cnr.it
AF: Institute of Atmospheric Science and Climate-C.N.R, 101 Via P. Gobetti, Bologna, 40129
Italy
AU: Emblico, L
EM: L.Emblico@isac.cnr.it
AF: Institute of Atmospheric Science and Climate-C.N.R, 101 Via P. Gobetti, Bologna, 40129
Italy
AU: Collet, J
EM: collett@lamar.colostate.edu
AF: Department of Atmospheric Science
Colorado State University, none, Fort Collins, CO 80523-1371
United States
AB:
Cloud water samples were collected at the East Peak, located at the Caribbean National Forest in Puerto Rico, as part of the
Rain in Cumulus over the Ocean Experiment (RICO) during January 2005. Clouds and fogs present in Earth's atmosphere play a
fundamental role in the production and removal of new aerosols. Our project seeks to determine the inorganic and organic
composition of clouds in the tropical trade winds using ion chromatography (IC) and total organic carbon (TOC) analysis.
Samples were collected with a single-stage Caltech Active Strand Cloudwater Collector (ss-CASCC). The observed values for
conductivity and pH ranged from 30 to 94 æs cm-1 and 6 to 8, respectively. The chemical characterization presented here
focuses on the IC analyses since the method for sampling and analyzing organics is still under development. Preliminary
results show that the predominant inorganic species are sodium (455 æeq L-1) and chloride (427 æeq L-1). Sulfate and nitrate
concentrations were 59.6 and 24.2 æeq L-1, respectively.
DE: 0305 Aerosols and particles (0345, 4801, 4906)
DE: 0320 Cloud physics and chemistry
SC: Biogeosciences [B]
MN: Fall Meeting 2005