Fluxos de calor e transferência de energia calorífica entre o oceano e a atmosfera sobre estruturas oceânicas de mesoescala no Atlântico Sul
Understanding the interactions between ocean and atmosphere in regions of oceanographic fronts is of vital importance for the improvement of numerical models for weather and climate forecasting. In the South Atlantic Ocean (SAO) the meeting between the warm waters of the Brazil Current (BC) and the...
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Universidade Federal de Santa Maria
2012
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ftunivfstmaria:oai:repositorio.ufsm.br:1/10263 2023-05-15T18:21:06+02:00 Fluxos de calor e transferência de energia calorífica entre o oceano e a atmosfera sobre estruturas oceânicas de mesoescala no Atlântico Sul Heat fluxes and heat energy transfer between the ocean and the atmosphere on top of oceanic mesoscale structures in the South Atlantic Arsego, Diogo Alessandro Souza, Ronald Buss de http://lattes.cnpq.br/0537824080913130 Pezzi, Luciano Ponzi http://lattes.cnpq.br/9168878830863753 Acevedo, Otávio Costa http://lattes.cnpq.br/8696858608013659 Anabor, Vagner http://lattes.cnpq.br/5770274675104746 2012-03-20 application/pdf http://repositorio.ufsm.br/handle/1/10263 por por Universidade Federal de Santa Maria BR Meteorologia UFSM Programa de Pós-Graduação em Meteorologia ARSEGO, Diogo Alessandro.Heat fluxes and heat energy transfer between the ocean and the atmosphere on top of oceanic mesoscale structures in the South Atlantic. 2012. 97 f. Dissertação (Mestrado em Geociências) - Universidade Federal de Santa Maria, Santa Maria, 2012. http://repositorio.ufsm.br/handle/1/10263 Acesso Aberto Interação oceano-atmosfera Fluxos de calor Energia calorífica Vórtices oceânicos Oceano atlântico sul Camada limite atmosférica Ocean-atmosphere interaction Heat fluxes Energy exchanges Oceanic eddies South atlantic ocean Atmospheric boundary layer CNPQ::CIENCIAS EXATAS E DA TERRA::GEOCIENCIAS::METEOROLOGIA Dissertação 2012 ftunivfstmaria 2022-09-10T19:15:09Z Understanding the interactions between ocean and atmosphere in regions of oceanographic fronts is of vital importance for the improvement of numerical models for weather and climate forecasting. In the South Atlantic Ocean (SAO) the meeting between the warm waters of the Brazil Current (BC) and the cold waters of the Malvinas (Falkland) Current (MC) in the region known as the Brazil-Malvinas Confluence (BMC), results in intense mesoscale oceanic activity and, for this reason, this region is considered one of the most energetic of the Global Ocean. The interactions resulting from the thermal contrast in regions oceanographic fronts of the OAS are investigated in this work through estimates of heat fluxes based on data collected in situ and by satellite. The results of this study show that the response to the thermal contrasts found in the ocean is in the form of heat fluxes and these fluxes are critical in modulating the atmospheric boundary layer (ABL). Estimation based on data collected in situ show that in the warm side (north) of the oceanographic front the fluxes are more intense (latent heat: 62 W/m² and sensible heat: 0.6 W/m²) than in the cold side (south) (latent heat: 5.8 W/m² and sensible heat: -13.8 W/m²). In the South Atlantic Current (SAC) along the 30° S parallel, heat fluxes are directly related to the meandering characteristic of the current. The data collected in situ, in addition to allow heat flux estimates at a better spatial resolution, were used to develop a new method for estimating the heat energy exchanged between the atmosphere and the ocean caused by the presence of mesoscale oceanic structures. This methodology consists in the comparison of a radiosonde profile taken over waters of the structure of interest and another taken over waters which do not belong to this structure. The methodology was used to estimate the heat energy transfer between the atmosphere and the ocean over the top of three structures sampled in the OAS. The estimation of the heat energy transferred by a warm eddy ... Thesis South Atlantic Ocean Unknown |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftunivfstmaria |
language |
Portuguese |
topic |
Interação oceano-atmosfera Fluxos de calor Energia calorífica Vórtices oceânicos Oceano atlântico sul Camada limite atmosférica Ocean-atmosphere interaction Heat fluxes Energy exchanges Oceanic eddies South atlantic ocean Atmospheric boundary layer CNPQ::CIENCIAS EXATAS E DA TERRA::GEOCIENCIAS::METEOROLOGIA |
spellingShingle |
Interação oceano-atmosfera Fluxos de calor Energia calorífica Vórtices oceânicos Oceano atlântico sul Camada limite atmosférica Ocean-atmosphere interaction Heat fluxes Energy exchanges Oceanic eddies South atlantic ocean Atmospheric boundary layer CNPQ::CIENCIAS EXATAS E DA TERRA::GEOCIENCIAS::METEOROLOGIA Arsego, Diogo Alessandro Fluxos de calor e transferência de energia calorífica entre o oceano e a atmosfera sobre estruturas oceânicas de mesoescala no Atlântico Sul |
topic_facet |
Interação oceano-atmosfera Fluxos de calor Energia calorífica Vórtices oceânicos Oceano atlântico sul Camada limite atmosférica Ocean-atmosphere interaction Heat fluxes Energy exchanges Oceanic eddies South atlantic ocean Atmospheric boundary layer CNPQ::CIENCIAS EXATAS E DA TERRA::GEOCIENCIAS::METEOROLOGIA |
description |
Understanding the interactions between ocean and atmosphere in regions of oceanographic fronts is of vital importance for the improvement of numerical models for weather and climate forecasting. In the South Atlantic Ocean (SAO) the meeting between the warm waters of the Brazil Current (BC) and the cold waters of the Malvinas (Falkland) Current (MC) in the region known as the Brazil-Malvinas Confluence (BMC), results in intense mesoscale oceanic activity and, for this reason, this region is considered one of the most energetic of the Global Ocean. The interactions resulting from the thermal contrast in regions oceanographic fronts of the OAS are investigated in this work through estimates of heat fluxes based on data collected in situ and by satellite. The results of this study show that the response to the thermal contrasts found in the ocean is in the form of heat fluxes and these fluxes are critical in modulating the atmospheric boundary layer (ABL). Estimation based on data collected in situ show that in the warm side (north) of the oceanographic front the fluxes are more intense (latent heat: 62 W/m² and sensible heat: 0.6 W/m²) than in the cold side (south) (latent heat: 5.8 W/m² and sensible heat: -13.8 W/m²). In the South Atlantic Current (SAC) along the 30° S parallel, heat fluxes are directly related to the meandering characteristic of the current. The data collected in situ, in addition to allow heat flux estimates at a better spatial resolution, were used to develop a new method for estimating the heat energy exchanged between the atmosphere and the ocean caused by the presence of mesoscale oceanic structures. This methodology consists in the comparison of a radiosonde profile taken over waters of the structure of interest and another taken over waters which do not belong to this structure. The methodology was used to estimate the heat energy transfer between the atmosphere and the ocean over the top of three structures sampled in the OAS. The estimation of the heat energy transferred by a warm eddy ... |
author2 |
Souza, Ronald Buss de http://lattes.cnpq.br/0537824080913130 Pezzi, Luciano Ponzi http://lattes.cnpq.br/9168878830863753 Acevedo, Otávio Costa http://lattes.cnpq.br/8696858608013659 Anabor, Vagner http://lattes.cnpq.br/5770274675104746 |
format |
Thesis |
author |
Arsego, Diogo Alessandro |
author_facet |
Arsego, Diogo Alessandro |
author_sort |
Arsego, Diogo Alessandro |
title |
Fluxos de calor e transferência de energia calorífica entre o oceano e a atmosfera sobre estruturas oceânicas de mesoescala no Atlântico Sul |
title_short |
Fluxos de calor e transferência de energia calorífica entre o oceano e a atmosfera sobre estruturas oceânicas de mesoescala no Atlântico Sul |
title_full |
Fluxos de calor e transferência de energia calorífica entre o oceano e a atmosfera sobre estruturas oceânicas de mesoescala no Atlântico Sul |
title_fullStr |
Fluxos de calor e transferência de energia calorífica entre o oceano e a atmosfera sobre estruturas oceânicas de mesoescala no Atlântico Sul |
title_full_unstemmed |
Fluxos de calor e transferência de energia calorífica entre o oceano e a atmosfera sobre estruturas oceânicas de mesoescala no Atlântico Sul |
title_sort |
fluxos de calor e transferência de energia calorífica entre o oceano e a atmosfera sobre estruturas oceânicas de mesoescala no atlântico sul |
publisher |
Universidade Federal de Santa Maria |
publishDate |
2012 |
url |
http://repositorio.ufsm.br/handle/1/10263 |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_relation |
ARSEGO, Diogo Alessandro.Heat fluxes and heat energy transfer between the ocean and the atmosphere on top of oceanic mesoscale structures in the South Atlantic. 2012. 97 f. Dissertação (Mestrado em Geociências) - Universidade Federal de Santa Maria, Santa Maria, 2012. http://repositorio.ufsm.br/handle/1/10263 |
op_rights |
Acesso Aberto |
_version_ |
1766200208939548672 |