Interim report on the Southeast Queensland Cloud Seeding Research Program

Tessendorf, Sarah and Bruintjes, Roelof and Dixon, Mike and Pocernich, Matt and Brandes, Ed and Wilson, Jim and Roberts, Rita and Ikeda, Kyoko and Axisa, Duncan and Craig, Ian and Peter, Justin and May, Peter and Keenan, Tom and Manton, Michael and Stone, Roger C. and Yates, David and Towler, Erin and Bringi, V. and Thurai, M. (2008) Interim report on the Southeast Queensland Cloud Seeding Research Program. Technical Report. National Center for Atmospheric Research, Boulder, CO. United States.

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Abstract

Water stresses are occurring in Southeast Queensland. In order to assess the feasibility of any future precipitation enhancement potential in clouds in the Southeast Queensland region, it is extremely important to obtain observations in a well-designed measurement program. Aerosol and microphysical measurements, in particular, can help determine if seeding could be beneficial and also help determine what the optimal seeding method would be with regards to potential for enhancing precipitation in local clouds. The potential for such manmade increases is strongly dependent on the natural microphysics and dynamics of the clouds that are being seeded (in this case microphysics means the size and concentration of water droplets and ice inside clouds). These factors can differ significantly from one geographical region to another, as well as during and between seasons in the same region. In some instances, clouds may not be suitable for seeding, or the frequency of occurrence of suitable clouds may be too low to warrant the investment in a cloud seeding program. Both factors need to be evaluated from a climatological perspective. It is therefore important to conduct preliminary studies on the microphysics and dynamics of the naturally forming clouds prior to commencing a larger, operational experiment. It is also important to conduct hydrological studies relating rainfall with river flows and reservoir levels, and to determine hydrological regions where reservoir catchments are most efficient. Seeding could then be optimized by preferentially targeting the most efficient watersheds. The following is a summary of key preliminary results derived from the analysis of data collected during the 2007-2008 season in Southeast Queensland.


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Item Type: Report (Technical Report)
Item Status: Live Archive
Additional Information: This is the interim report produced by NCAR for the Queensland Cloud Seeding Research Project, summarising preliminary results from the first summer season campaign (November 2007 to March 2008). No evidence of copyright restrictions.
Depositing User: Dr Ian Craig
Faculty / Department / School: Current - USQ Other
Date Deposited: 08 Nov 2010 23:23
Last Modified: 11 Oct 2013 01:23
Uncontrolled Keywords: hygroscopic cloud seeding
Fields of Research (FOR2008): 04 Earth Sciences > 0401 Atmospheric Sciences > 040107 Meteorology
04 Earth Sciences > 0401 Atmospheric Sciences > 040101 Atmospheric Aerosols
04 Earth Sciences > 0401 Atmospheric Sciences > 040106 Cloud Physics
Socio-Economic Objective (SEO2008): D Environment > 96 Environment > 9602 Atmosphere and Weather > 960202 Atmospheric Processes and Dynamics
URI: http://eprints.usq.edu.au/id/eprint/4941

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