Atualização de Documento

XIX SBSR

Formulário de atualização

O sistema de atualização, para eventuais correções, estará ativo até 30/11/2019.

Contato: bibdigital@inpe.br


Nome do Campo		Valor do Campo
Tipo de Referência		Artigo em Evento (Conference Proceedings)
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	Não esqueça de clicar na opção "+" para informar os dados dos co-autores, se tiver.		v
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Resumo	(*)(?)	Cloud cover is a major problem for optical remote sensing in the tropics. Many studies evaluated cloud coverage using Landsat images. In this study, we take a new approach, and evaluate the ascending and descending orbits of the MODIS on-board Terra platform, in order to evaluate cloud coverage and no-data in Amazônia. We have selected two years with climatic extremes for comparison: 2009, a year where floods where observed in the Amazon, and 2010, one of the driest years in the study area. Our results showed that in the Brazilian Amazon, most of the rainy season months had higher cloud coverage in 2009, while if considering the entire Amazonia and northeast of Brazil, little difference is observed between 2009 and 2010. The 2010 daily acquisition cloud free images cover a larger area than the 2009 images. On the other hand, the nigh-time images acquired during 2010 suggests larger areas of covered by clouds than in 2009. Areas close to the Equator present a higher number of no data due to the satellite orbit, and the southern parts of the study area exhibits higher number of acquisitions. The next phase of this study will quantify cloud coverage and no data information for both Terra and Aqua platforms, covering from 2000 to 2010.
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e-Mail (login)		banon