Study of the trajectories of extratropical cyclones formed in the Antarctic Peninsula region during spring time

• Published in: Metodologias e Aprendizado
• Main Authors: Gandra, Mariana, Francisco Leal de Quadro, Mário
• Format: Article in Journal/Newspaper
• Language: Portuguese
• Published: Instituto Federal Catarinense 2021
• Subjects: Algoritmo Automático; Atlântico Austral; Interação Oceano-Atmosfera; Antarctic; The Antarctic; Antarctic Peninsula; Austral; Del Viento; Antarc*; Antártica
• Online Access: https://publicacoes.ifc.edu.br/index.php/metapre/article/view/1511; https://doi.org/10.21166/metapre.v4i.1511

The ocean is increasingly seen as a vital component of the climate system. Through the surface of the ocean, exchanges with the atmosphere of heat, water, gases, particles occur. Extratropical cyclones (EC) transfer momentum into the superficial layers of the ocean due to the friction of the wind, in addition they distribute heat and humidity from low to high latitudes. These systems are centered in the ocean-atmosphere interaction and climate in South America. In the Southern Hemisphere, the area between southern Brazil and the Antarctic Peninsula (AP) (30 ° S to 70 ° S) is described as one of the most favorable for the formation of cyclones because of the existence of strong temperature gradients between the ocean and the above surface air layer and also pre-existing baroclinic instabilities. This study is associated with the ATMOS Project (AnTarctic Modeling Observation System) and aimed to understand the interaction of cyclones and the ocean in the region between the high and medium latitudes. The goal was to track the trajectories of the EC that formed around the AP, in spring months, in order to study the statistical properties and check for possible influences at lower latitudes. The algorithm found some anomalous trajectories and little correlation between vorticity and oceanic variables. This could be an indicative of the need for non-linear statistical techniques. El océano se considera cada vez más un componente vital del sistema climático. Los intercambios con la atmósfera de grandes cantidades de calor, agua, gases y partículas se producen a través de la superficie del océano. Los ciclones extratropicales (CE) actúan en la transferencia de impulso debido a la fricción del viento en las capas superficiales del océano, además de distribuir el calor y la humedad de latitudes bajas a altas. Estos sistemas juegan un papel importante en la interacción océano-atmósfera y el clima en América del Sur. En el hemisferio sur, el área entre el sur de Brasil y la Península Antártica (AP) (30 ° S a 70 ° S) se ...