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.
AGU Fall Meeting Abstracts
- Pub Date:
- December 2007
- 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE