Title Evidence of mineral dust altering cloud microphysics and precipitation
Author Min, Q.L.; Li, R.; Lin, B.; Joseph, E.; Wang, S.; Hu, Y.; Morris, V.; Chang, F.
Author Affil Min, Q.L., State University of New York, Atmospheric Sciences Research Center, Albany, NY. Other: NASA, Langley Research Center; NOAA, Center for Atmospheric Sciences at Howard University
Source Atmospheric Chemistry and Physics, 9(9), p.3223-3231, . Publisher: Copernicus, Katlenburg-Lindau, International. ISSN: 1680- 7316
Publication Date 2009
Notes In English. Includes supplement: http://www.atmos-chem- phys.net/9/3223/2009/acp-9-3223-2009- supplement.zi p; published in Atmospheric Chemistry and Physics Discussions: 3 November 2008, http://www.atmos-chem-phys- discuss.net/8/18893/2008/acpd-8-18893-2008.ht ml; accessed in Apr., 2011. 26 refs. GeoRef Acc. No: 310579
Index Terms aerosols; precipitation (meteorology); climatic change; clouds (meteorology); convection; dust; ice; particles; pollution; remote sensing; sediments; thermodynamic properties; Atlantic Ocean--East Atlantic; Atlantic Ocean--Equatorial Atlantic; Sahara; Africa; air pollution; Atlantic Ocean; atmospheric precipitation; atmospheric transport; clastic sediments; climate change; climate forcing; clouds; dust storms; East Atlantic; Equatorial Atlantic; heterogeneity; satellite methods; transport; tropical environment; vorticity
Abstract Multi-platform and multi-sensor observations are employed to investigate the impact of mineral dust on cloud microphysical and precipitation processes in mesoscale convective systems. For a given convective strength, small hydrometeors were more prevalent in the stratiform rain regions with dust than in those regions that were dust free. Evidence of abundant cloud ice particles in the dust sector, particularly at altitudes where heterogeneous nucleation of mineral dust prevails, further supports the observed changes of precipitation. The consequences of the microphysical effects of the dust aerosols were to shift the precipitation size spectrum from heavy precipitation to light precipitation and ultimately suppressing precipitation.
URL http://www.atmos-chem-phys.net/9/3223/2009/acp-9-3223-2009.pdf
Publication Type journal article
Record ID 65007022