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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Seasonal variability of heterogeneous ice formation in stratiform clouds over the Amazon Basin

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Autor(es):
Seifert, Patric [1] ; Kunz, Clara [1] ; Baars, Holger [1] ; Ansmann, Albert [1] ; Buehl, Johannes [1] ; Senf, Fabian [1] ; Engelmann, Ronny [1] ; Althausen, Dietrich [1] ; Artaxo, Paulo [2]
Número total de Autores: 9
Afiliação do(s) autor(es):
[1] Leibniz Inst Tropospher Res, Leipzig - Germany
[2] Univ Sao Paulo, Inst Phys, Sao Paulo - Brazil
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: Geophysical Research Letters; v. 42, n. 13, p. 5587-5593, JUL 16 2015.
Citações Web of Science: 8
Resumo

Based on 11months of polarization lidar observations in the Amazon Basin near Manaus, Brazil (2.3 degrees S, 60 degrees W), the relationship between temperature and heterogeneous ice formation efficiency in stratiform clouds was evaluated in the cloud top temperature range between -40 and 0 degrees C. Between -30 and 0 degrees C, ice-containing clouds are a factor of 1.5 to 2 more frequent during the dry season. Free-tropospheric aerosol backscatter profiles revealed a twofold to tenfold increase in aerosol load during the dry season and a Monitoring Atmospheric Composition and ClimateInterim Implementation reanalysis data set implies that the aerosol composition during the dry season is strongly influenced by biomass burning aerosol, whereas other components such as mineral dust do not vary strongly between the seasons. The injection of smoke accompanied by the likely dispersion of biological material, soil dust, or ash particles was identified as a possible source for the increased ice formation efficiency during the dry season. (AU)

Processo FAPESP: 13/05014-0 - GoAmazon: interação da pluma urbana de Manaus com emissões biogênicas da Floresta Amazônica
Beneficiário:Paulo Eduardo Artaxo Netto
Linha de fomento: Auxílio à Pesquisa - Programa de Pesquisa sobre Mudanças Climáticas Globais - Temático