=========== Cryosphere Modeling Positions at UC Irvine ============== UC Irvine's Earth System Science Department has two opportunities for grad. students or postdocs interested in global-scale cryospheric modeling studies. Projects (http://www.ess.uci.edu/~zender#ipy) will examine aerosol interactions with polar climate. Our objectives are to 1. Quantify how timing and location of BC emissions affect Arctic surface reflectance and atmospheric processes. 2. Identify the relative roles of surface and atmospheric BC forcing on Arctic climate sensitivity (including sea-ice response). 3. Quantify how BC alters seasonality of Arctic surface freshwater reservoirs and fluxes such as snowpack depth and extent, depth to permafrost, soil moisture, and runoff. Observational data for process evaluation will come from AMSR-E, CERES, GRACE, MISR, and MODIS satellites and from IPY field programs including POLARCAT. Projects are collaborative among the groups of Professors Charlie Zender (Aerosols, Radiation, http://www.ess.uci.edu/~zender), Jay Famiglietti (Hydrology, http://www.ess.uci.edu/~famiglietti), and Jim Randerson (Fire, C, H2O, http://www.ess.uci.edu/~jranders). Participants will work directly with one or more of these groups. Collaborations with other groups will be encouraged and supported. These include UCI (Dupont, Rignot, Velicogna), LANL (Hunke, Lipscomb), LGGE (Domine), NCAR (Flanner, Rasch), and NSIDC (Khalsa). Applicant must have strong interest and/or background in one or more of three areas 1. Aerosol physics; 2. Snow/sea-ice/glaciers physics; 3. Arctic freshwater hydrology. Global studies will be conducted using modified versions of NCAR's Community Climate System Model. Opportunistic microphysical and regional studies, particularly those that explore POLARCAT IPY data, are also likely. Applicants please e-mail a detailed CV, statement of research interests, and contact information for up to three references before 1 October 2007 to Dr. Charlie Zender .