Sea Breeze characteristics during a high ozone event over Houston

Due to the character of the original source materials and the nature of batch digitization, quality control issues may be present in this document. Please report any quality issues you encounter to digital@library.tamu.edu, referencing the URI of the item.Includes bibliographical references (leaves 86-87).Issued also on microfiche from Lange Micrographics.During August 29 through September 2, 2000, high surface ozone levels were observed over Houston, Texas. Observational and MM5 model data were used to evaluate the land/sea breeze event that occurred each day. The model did well in accurately representing the wind field in the lowest 4 km. Results show that changes in the large-scale wind pattern, as seen at 850 mb, can explain differences in the sea breeze circulation. Onshore flow leads to a faster moving sea breeze front whereas light opposing flow at 850-mb leads to a slower, stronger circulation. The varying sea breeze characteristics account for differences in the ozone distribution. Highest overall levels occurred on August 30 and 31: days with both a strong land breeze and nicely developed sea breeze when 850-mb winds were lightest. As clouds increased and afternoon showers developed on September 1, overall ozone measurements were lower