Atmospheric teleconnections via data from the Total Ozone Mapping Spectrometer

• Grant number: 95/02331-4
• Support Opportunities: Regular Research Grants
• Start date: April 01, 1996
• End date: March 31, 1998
• Field of knowledge: Physical Sciences and Mathematics - Geosciences - Meteorology
• Principal Investigator: Tercio Ambrizzi
• Grantee: Tercio Ambrizzi
• Host Institution: Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

This project aims to identify the patterns of global teleconnection, previously documented by means of statistical analysis of data of geopotential height and current function, using the total ozone variable.We will use monthly global data from 13 years of the Total Ozone Mapping Spectrometer (TOMS) to study the possible relation of linearity between this variable and the geopotential height, as suggested in recent works. Based on the establishment of this linearity, we will study the stationary waves in the high troposphere and their low frequency variability, as well as several patterns of teleconnections known from other observational studies. A comparison between these various results will be carried out through the use of global climatological data obtained by means of a Model of General Circulation (MGC), which was integrated for the same period as the TOMS, with a triangular resolution in wave number 42 (T42). This comparative analysis should permit the verification of possible systematic errors of the MGC, which could be improved and integrated again, aimed at the determination of more reliable climatological averages. (AU)