CAMPANHA PROPOLAR 2016-2017  ◄

PROJETOS EM LABORATÓRIO  ◄

PROJECT EXPAR - Precipitation and hydrological cycle in Antarctica

EQUIPA EXPAR NO TERRENO

Irina Gorodetskaya
Atmosfera
 MAIS SOBRE IRINA
Irina Gorodetskaya is an Assistant Researcher at CESAM - Center for Environmental and Marine Studies, Department of Physics, University of Aveiro. She received her Diploma in Meteorology and Geography at St Petersburg State University (Russia) and did her Master and PhD studies in Atmospheric science at Lamont-Doherty Earth Observatory, Columbia University (New York, USA). Her Phd thesis (2008) were on the interaction between the Arctic sea ice and clouds. During 2008-2015 she was working as a postdoctoral researcher in France (LGGE, Grenoble) and then Belgium (KU Leuven) on the Antarctic climate regional climate modeling and observations. Her current research interests focus on the atmospheric hydrological cycle in Antarctica, relating poleward moisture transport to cloud and precipitation properties, deciphering different components of the Antarctic ice sheet surface mass balance, and better understanding extreme precipitation events both in Antarctica and in Portugal/Iberia. She has participated in two research campaigns in East Antarctica and a research cruise in the Nordic seas.
PROJETO EXPAR
Extreme precipitation events in Antarctica: investigating the role of Atmospheric Rivers
Eventos de Precipitação Extrema na Antártida: investigação do papel dos Rios Atmosféricos
Irina Gorodetskaya,
Centro de Estudos do Ambiente e do Mar, Universidade de Aveiro (CESAM)
​Antarctica has the potential to contribute more than a meter of sea-level rise by 2100 in response to the occurring global climate warming. At the same time intense precipitation events over specific regions of Antarctica can determine the sign of the total mass balance change of the entire ice sheet. Previous work by the EXPAR project PI (Gorodetskaya et al., 2014, "The role of atmospheric rivers in anomalous snow accumulation in East Antarctica", GRL) demonstrated that extreme precipitation events that recently occurred over East Antarctica were associated with atmospheric rivers - narrow and long-band features of intense moisture transport from lower latitudes.
EXPAR project will extend the analysis to the entire ice sheet, and will use unique measurements to be gathered during the Antarctic Circumnavigation Expedition next austral summer, in order to explore the role of atmospheric rivers in precipitation over the Antarctic ice sheet and the Southern Ocean.
​A Antártida tem o potencial para contribuir, até 2100, com um acréscimo de mais de 1 metro na subida do nível médio do mar como resposta ao aquecimento global. Ao mesmo tempo, eventos de precipitação intensa que ocorrem em regiões específicas da Antártida podem determinar o sinal do balanço total de massa de toda a superfície de gelo. 
Trabalhos anteriores da PI da EXPAR proposta (Gorodetskaya et al., 2014, "The role of atmospheric rivers in anomalous snow accumulation in East Antarctica", GRL) demonstram que eventos recentes de precipitação extrema no leste da Antártida estiveram associados a “atmospheric rivers” - faixas alongadas e estreitas de transporte intenso de vapor de água a partir de latitudes tropicais. 
Usando dados que serão recolhidos durante a “Antarctic Circumnavigation Expedition” a decorrer no próximo verão austral, este projeto englobará a análise do papel dos “atmospheric rivers” na precipitação em toda a Antártida e os seus impactos na massa de gelo e oceano.
PORTUGAL »  ÁRTICO
16 January 2017
ANTÁRTIDA: (from Hobart, Tasmania to Punta Arenas, Chile)
Antarctic Circumnavigation Expedition (ACE) organized by Swiss Polar Research Institute onboard Akademik Tryoshnikov
22 Janeiro 2017
​
ANTÁRTIDA   »  PORTUGAL
28 Fevereiro 2017
​