(Article of periodic en Anglais - 2009)

Document title

Sensitivity of direct radiative forcing by mineral dust to particle characteristics

Authors(s) and Affiliation(s)

DURANT A.J. (1 2) ; HARRISON S.P. (1) ; WATSON I.M. (2) ; BALKANSKI Y. (3) ;
(1) School of Geographical Sciences, Univ., Bristol, ROYAUME-UNI
(2) Dep. of Earth Sciences, Univ., Bristol, ROYAUME-UNI
(3) LSCE/IPSL, Lab. CEA-CNRS-UVSQ, Gif-sur-Yvette, FRANCE


Airborne dust affects the Earth's energy balance, an impact that is measured in terms of the implied change in net radiation at the top of the atmosphere. There remains considerable uncertainty in the magnitude and sign of direct forcing by airborne dust under current climate. Much of this uncertainty stems from simplified assumptions about mineral dust-particle size, composition and shape, which are applied in remote sensing retrievals of dust characteristics and dust-cycle models. Improved estimates of direct radiative forcing by dust will require improved characterization of the spatial variability in particle characteristics to provide reliable information dust optical properties. This includes constraints on : particle-size distribution, particle composition, particle shape, and the degree to which dust particles are aggregated together. The use of techniques that measure the size, composition and shape of individual particles will provide a better basis for optical modelling


Article of periodic

published at : Progress in physical geography / ISSN 0309-1333 / CODEN PPGEEC

Editor : Sage Publications, London - ROYAUME-UNI (1977)

Millesime : 2009, vol. 33, no1 [pp. 80-102]

Bibliographic references : 5,5 p.

Collation : 2 fig., 4 tabl.



INIST-CNRS, Cote INIST : 14648 A

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1177/0309133309105034

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2009
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