Banca de DEFESA: LAÍS SAN MARTINS SCHMALFUSS

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
DISCENTE : LAÍS SAN MARTINS SCHMALFUSS
DATA : 18/02/2019
HORA: 08:30
LOCAL: AUDITORIO DO CCET
TÍTULO:

Dynamic characterization of Total Ozone Column over the Southern Hemisphere.

PALAVRAS-CHAVES:

tropopause break; Intrusion events; High level jet

PÁGINAS: 80
GRANDE ÁREA: Ciências Exatas e da Terra
ÁREA: Geociências
SUBÁREA: Meteorologia
ESPECIALIDADE: Meteorologia Aplicada
RESUMO:

Given the importance of the ozone layer to life on the surface, an investigation on the dynamics of stratospheric ozone and its interaction with troposphere systems are conducted in this study. Being the focus of work the events of "ozone hole" extension over South America, here titled as comma events. The work was conducted out for the period from 1979 to 2016 only for the months of August, September, October and November, those are the months in which the ozone hole is unstable. The data used were daily average ERA - INTERIM (European Center for Medium - Range Weather Forecasts) with spatial resolution 1x1º for whole Southern Hemisphere. An analysis of the total ozone column, temperature in 100 hPa, zonal wind in 100 hPa and 200 hPa and potential vorticity in 600 K fields are performed through the mean of the period and the mean for days with a comma event, in addition to the difference between these two means. In these analyzes it was found that during the comma events a dipole in PV field associated with Rossby wave breaking. In addition to the mass mixture that occurred between the "arm" of comma and the belt of high ozone concentrations. In a second part, surface analyzes were performed in the mean sea level pressure and geopotential (500 hPa) fields, zonal wind (200 hPa) and temperature (850 hPa), as well as the vertical cut in the latitude of 50ºS for the zonal wind and temperature. The influence of high-level jet on the tropopause break, as well as the connection between anticyclones and comma events, can be seen.

MEMBROS DA BANCA:
Presidente - 1858120 - DAVID MENDES
Interno - 1808127 - JOSE HENRIQUE FERNANDEZ
Interno - 1164414 - WEBER ANDRADE GONCALVES
Externa à Instituição - CLÊNIA RODRIGUES ALCÂNTARA - UFCG
Externa à Instituição - MARIA PAULETE PEREIRA MARTINS - INPE