Climate 2013, 1(3), 120-147; doi:10.3390/cli1030120
Article

Exploring Aerosol Effects on Rainfall for Brisbane, Australia

1 Climate Research Group, The School of Geography, Planning and Environmental Management, The University of Queensland, Brisbane Queensland 4072, Australia 2 Biophysical Remote Sensing Group, The School of Geography, Planning and Environmental Management, The University of Queensland, Brisbane Queensland 4072, Australia 3 Earth Systems Research Laboratory, National Oceanic and Atmospheric Administration, Boulder, CO 80305-3337, USA
* Author to whom correspondence should be addressed.
Received: 23 April 2013; in revised form: 30 July 2013 / Accepted: 7 October 2013 / Published: 28 October 2013
(This article belongs to the Special Issue Emission Impacts on Aerosol-Climate Feedbacks)
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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.
Keywords: natural and anthropogenic emission; spatial analysis; geostatistics

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MDPI and ACS Style

Hewson, M.; McGowan, H.; Phinn, S.; Peckham, S.; Grell, G. Exploring Aerosol Effects on Rainfall for Brisbane, Australia. Climate 2013, 1, 120-147.

AMA Style

Hewson M, McGowan H, Phinn S, Peckham S, Grell G. Exploring Aerosol Effects on Rainfall for Brisbane, Australia. Climate. 2013; 1(3):120-147.

Chicago/Turabian Style

Hewson, Michael; McGowan, Hamish; Phinn, Stuart; Peckham, Steven; Grell, Georg. 2013. "Exploring Aerosol Effects on Rainfall for Brisbane, Australia." Climate 1, no. 3: 120-147.

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