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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.)

Satellite retrieval of cloud condensation nuclei concentrations by using clouds as CCN chambers

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Autor(es):
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Rosenfeld, Daniel [1] ; Zheng, Youtong [2, 3, 4] ; Hashimshoni, Eyal [1] ; Poehlker, Mira L. [5, 6] ; Jefferson, Anne [7] ; Poehlker, Christopher [5] ; Yu, Xing [8] ; Zhu, Yannian [8, 2] ; Liu, Guihua [8] ; Yue, Zhiguo [8] ; Fischman, Baruch [1] ; Li, Zhanqing [2, 3, 4] ; Giguzin, David [1] ; Goren, Tom [1] ; Artaxo, Paulo [9] ; Barbosa, Henrique M. J. [9] ; Poeschl, Ulrich [5, 6] ; Andreae, Meinrat O. [5]
Número total de Autores: 18
Afiliação do(s) autor(es):
[1] Hebrew Univ Jerusalem, Inst Earth Sci, IL-91904 Jerusalem - Israel
[2] Beijing Normal Univ, Coll Global Change & Earth Syst Sci, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875 - Peoples R China
[3] Univ Maryland, Dept Atmospher & Ocean Sci, College Pk, MD 20740 - USA
[4] Univ Maryland, Earth Syst Sci Interdisciplinary Ctr, College Pk, MD 20740 - USA
[5] Max Planck Inst Chem, Biogeochem Dept, D-55020 Mainz - Germany
[6] Max Planck Inst Chem, Multiphase Chem Dept, D-55020 Mainz - Germany
[7] NOAA, Earth Syst Res Lab, Boulder, CO 80305 - USA
[8] Meteorol Inst Shaanxi Prov, Xian 710015 - Peoples R China
[9] Univ Sao Paulo, Inst Phys, BR-05508090 Sao Paulo - Brazil
Número total de Afiliações: 9
Tipo de documento: Artigo Científico
Fonte: Proceedings of the National Academy of Sciences of the United States of America; v. 113, n. 21, p. 5828-5834, MAY 24 2016.
Citações Web of Science: 25
Resumo

Quantifying the aerosol/cloud-mediated radiative effect at a global scale requires simultaneous satellite retrievals of cloud condensation nuclei (CCN) concentrations and cloud base updraft velocities (W-b). Hitherto, the inability to do so has been a major cause of high uncertainty regarding anthropogenic aerosol/cloud-mediated radiative forcing. This can be addressed by the emerging capability of estimating CCN and W-b of boundary layer convective clouds from an operational polar orbiting weather satellite. Our methodology uses such clouds as an effective analog for CCN chambers. The cloud base supersaturation (S) is determined by W-b and the satellite-retrieved cloud base drop concentrations (N-db), which is the same as CCN(S). Validation against ground-based CCN instruments at Oklahoma, at Manaus, and onboard a ship in the northeast Pacific showed a retrieval accuracy of +/- 25% to +/- 30% for individual satellite overpasses. The methodology is presently limited to boundary layer not raining convective clouds of at least 1 km depth that are not obscured by upper layer clouds, including semi-transparent cirrus. The limitation for small solar backscattering angles of < 25 degrees restricts the satellite coverage to similar to 25% of the world area in a single day. (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
Processo FAPESP: 13/50510-5 - Pesquisa colaborativa Brasil-EUA: modificações causadas pela poluição antrópica na química da atmosfera e na microfísica de partículas da floresta tropical durante as campanhas intensivas do GoAmazon
Beneficiário:Henrique de Melo Jorge Barbosa
Linha de fomento: Auxílio à Pesquisa - Programa de Pesquisa sobre Mudanças Climáticas Globais - Regular