Banca de DEFESA: REGINALDO TUDEIA DOS SANTOS

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : REGINALDO TUDEIA DOS SANTOS
DATE: 13/05/2020
TIME: 09:00
LOCAL: ATRAVÉS DE VÍDEO CONFERENCIA
TITLE: 
SIMULATIONS OF THE SWEET WATER FLOW NO START OF THE HOLOCENE: IMPLICATIONS FOR THE CLIMATE SYSTEM

KEY WORDS: 
LOVECLIM, EARLY HOLOCENE, LAST CLIMATE

PAGES: 74
BIG AREA: Ciências Exatas e da Terra
AREA: Geociências
SUBÁREA: Meteorologia
SPECIALTY: Meteorologia Física
SUMMARY:
The beginning of the Holocene is the period that includes the transition from glacial to interglacial conditions characterized by a warming trend in some regions of the planet, registered in proxy and indicated by temperature reconstructions. Some models of climatic studies analyze the influence of the reduction in the polar ice layers due to the increase in temperature at the beginning of the Holocene, in addition to other forcing that influenced the changes of the climatic system for the mentioned period. Climate responses due to the reduction of ice sheets and consequent freshwater entering the oceans in the early Holocene are still not well understood and require further study. The objective of the research was to help in understanding the impact of the extra pulse of freshwater to ocean and aggregate systems and in the behavior of the atmosphere, using the LOVECLIM climate model to design Early Holocene (EH) climatic scenarios, behavior of the ocean and Earth's climate systems had there been no change in freshwater flow. The results of the research indicate that the transport of heat across the Atlantic Ocean is more intense in depths between 300 and 3,500 meters due to the colder water in the first meters of the oceanic surface, coming from the melting of the continental ice. This cold water reduces heat transfer from the ocean to the atmosphere and allows the transport of heat to high latitudes by the mass of water just below the surface. The results also indicate that in a considerable part of the Northern Hemisphere rainfall was less intense in HD than in the IP, mainly in the north-east of the North Atlantic and Siberia. Salinity and SST in the North Atlantic were lower than current as a result of the injection of more freshwater in northeastern Canada and the melting water of the ice sheets. Finally, the air temperature at 2m in the EH when compared to the IP were less intense for almost all the terrestrial globe, emphasizing regions of high latitudes north, with cooling more accentuated than the other regions.

BANKING MEMBERS:
Presidente - 1858120 - DAVID MENDES
Interna - 792.031.834-34 - MARIA HELENA CONSTANTINO SPYRIDES - UFRN
Interno - 1808127 - JOSE HENRIQUE FERNANDEZ
Interno - 1164414 - WEBER ANDRADE GONCALVES
Externo ao Programa - 2276514 - MARCIO MACHADO CINTRA
Externo à Instituição - MICHEL DOS SANTOS MESQUITA - NENHUMA
Externo à Instituição - PEDRO MATTOS SOARES - ULISBOA
Notícia cadastrada em: 28/04/2020 13:36
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