Precipitation Processes

Integrated Study of Precipitation Processes within an Urban-Rural Climate Regimes and GPM Ground Validation

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Global Precipitation Measurement (GPM) is NASA/SMD Earth Science Division’s flagship mission and is recommended by the Decadal Survey for launch “before 2012” to provide continuity of precipitation measurements (NRC 2007). The need for independent and objective evaluation of precipitation products that will be generated by the GPM mission can be found in Petersen and Schwaller (2008). Central to the efforts of the GPM ground validation (GV) strategy is the independent evaluation and error diagnosis of the precipitation products. The stated GPM GV goals are to increase acceptance and utilization by other federal agencies and NASA partners. BCCSO is leveraging resources and partnerships at HUBC to engage in research that enhances GPM GV. BCCSO’s scientific objective within the context of GPM GV is to study the interaction of key external and internal processes of the hydrological cycle in an environment that is evolving from rural to suburban/urban and the resulting influences on the variability of precipitation properties within that regime. The resulting knowledge and observations from this research is intended to contribute to the improvement of GPM algorithms. BCCSO is specifically investigating the local antecedent thermodynamic conditions of precipitating storms, the chemical and physical properties of aerosols within the storm environment, and the microphysical properties of resulting hydrometeors and kinematics of the storm.