241 Environmental Geoscience (Posters)

Wednesday, 12 October 2011
9:00 AM - 6:00 PM
Hall C

GULF COAST ATMOSPHERIC OZONE STUDIES BY MUCESS CONSORTIUM UNDERGRADUATE STUDENTS

Paper number: 241-7
Program: Technical Sessions
Time: 9:00 AM – 6:00 PM

Authors

Abstract

The Minority University Consortium for Earth and Space Sciences (MUCESS) composed of the University of Houston-Downtown (UHD), Medgar Evers College (City University of New York), South Carolina State University, is an undergraduate atmospheric science program funded by NSF. The program goal is to increase the participation of minority universities in STEM activities and careers by providing students with the knowledge and skills needed to perform weather balloon launches, interpret ozone and temperature variations in the troposphere and stratosphere. Ozone profiles up to 30 km altitude are obtained via an instrument payload attached to a weather balloon. The payload instrumentation consists of an EN-SCI ECC ozonesonde and an iMET radiosonde. The data is transmitted to a base station in real time and includes pressure, temperature, humidity, and GPS coordinates

This presentation is directed towards comparing our 2011 Houston data to data that either UHD or the University of Houston (UH) has collected. Our launches are primarily on Sunday, and UH’s on Friday. Our primary objective is to identify ground level ozone variations on Sunday and compare with weekday levels as tropospheric ozone is largely controlled by anthropogenic activities.

The studies identify that weekday ground level ozone is generally elevated in contrast to Sunday data, but the levels vary depending on the time of year, temperature, rain, wind direction, chemical plant activities, private and commercial traffic patterns.etc. For example, our Friday July 2011 launch detected elevated low altitude ozone levels with ground level ozone levels of 42 nb that increased to 46 nb from 500 m to 1 km. Other peaks are at 2.7 km (44 nb) and 6km (41 nb), decreasing to 17 nb at the tropopause (12 km). Overall, Sunday low altitude ozone levels are generally lower.