Analysis of tropospheric ozone climatology in Santa Maria - RS from OMI/MLS instruments
Ozone (O3) is an important trace gas in the atmosphere and one of the main elements of pollution in the tropospheric region. This work aims to analyze the behavior and trends of the tropospheric ozone column (O₃trop) in the city of Santa Maria, Rio Grande do Sul, Brazil (29.42°S and 53.41°W) between...
| Autores: | , , , , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2025 |
| País: | Brasil |
| Institución: | Universidade Federal de Santa Maria (UFSM) |
| Repositorio: | Revista Ciência e Natura (Online) |
| Idioma: | portugués |
| OAI Identifier: | oai:ojs.pkp.sfu.ca:article/84033 |
| Acceso en línea: | https://periodicos.ufsm.br/cienciaenatura/article/view/84033 |
| Access Level: | acceso abierto |
| Palabra clave: | Climatologia Tendência Ozônio troposférico Climatology Trend Tropospheric Ozone |
| Sumario: | Ozone (O3) is an important trace gas in the atmosphere and one of the main elements of pollution in the tropospheric region. This work aims to analyze the behavior and trends of the tropospheric ozone column (O₃trop) in the city of Santa Maria, Rio Grande do Sul, Brazil (29.42°S and 53.41°W) between 2005 and 2020, using data from the Ozone Monitoring Instrument (OMI) and Microwave Limb Sounder (MLS) instruments on board the AURA satellite, applying the Tropospheric Ozone Residual (TOR) technique. The results revealed a well-defined annual cycle, with minimum values in winter and maximum values in spring, in addition to an increasing trend of 2.3% per decade; high O₃trop concentrations occurred in periods with the action of the La Niña phenomenon. Wavelet analysis highlighted significant interannual influences, associated with phenomena such as the El Niño Southern Oscillation (ENSO) and the Quasi-Biennial Oscillation (QBO). |
|---|