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Exploring Aerosol Effects On Rainfall For Brisbane, Australia

Abstract

The majority of studies assessing aerosol effects on rainfall use coarse spatial scale (1° latitude/longitude or more) and multi-seasonal or decadal data sets. Here, we present results from a spatial correlation of aerosol size distribution and rain rate for selected stratiform and cumuliform precipitation events. The chemistry transport version of the Weather Research and Forecasting model was used to estimate aerosol parameters during rain events Aerosol maps were then compared with observations of rainfall using geostatistics for the first time. The cross-variogram analysis showed that anthropogenic aerosol was associated with areas of less intense rain within the stratiform system studied. For cumuliform systems, cross-variogram analysis found that anthropogenic emissions may be associated with enhanced rain downwind of aerosol emissions. We conclude that geostatistics provides a promising new technique to investigate relationships between aerosols and rainfall at spatial scales of 1 km which complements more commonly used methods to study aerosol effects on rainfall.

Article / Publication Data
Active/Online
YES
Volume
1
Available Metadata
Accepted On
October 07, 2013
DOI ↗
Fiscal Year
Peer Reviewed
YES
Publication Name
Climate
Published On
October 28, 2013
Publisher Name
MDPI
Print Volume
1
Print Number
3
Page Range
120-147
Issue
3
Submitted On
April 23, 2013
URL ↗

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Authors

Authors who have authored or contributed to this publication.