HR: 1340h
AN: A13C-1375    [Abstracts]
TI: An analysis of the synoptic situation during TC-4
AU: * Rosenlof, K H
EM: Karen.H.Rosenlof@noaa.gov
AF: NOAA ESRL CSD, Mail Stop R/CSD-6 325 Broadway, Boulder, CO 80305, United States
AU: Ray, E
EM: eric.ray@noaa.gov
AF: University of Colorado/CIRES, Mail Stop R/CSD-6 325 Broadway, Boulder, CO 80305, United States
AB: During the TC-4 campaign, based in Costa Rica in July/August 2007, three different aircraft flew taking chemical and microphysical samples in the tropical region in the vicinity of Central and South America. In this study, we will analyze the meteorological origins of the air sampled, and compare the synoptic situation during 2007 to that of the past few years with NCAR/NCEP reanalysis output. In particular, there was a multi-day period where the southern hemisphere subtropical jet was unusually close to the equator. We will examine data from past years to determine if that was an anomalous occurrence, and what the impact was on the amount of mid latitude air present in the tropical upper troposphere.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting