=========== Cryosphere Modeling Positions/UC Irvine ============== UC Irvine's Earth System Science Department has opportunities for postdocs and grad. students interested in global-scale cryospheric modeling. Our projects (http://www.ess.uci.edu/~zender#ans and http://www.ess.uci.edu/~zender#ipy) examine aerosol interactions with polar climate. We aim to 1. Quantify how black carbon (BC) aerosols affect Arctic snow and ice. 2. Identify the relative roles of surface and atmospheric BC forcing on Arctic climate sensitivity (including land- and sea-ice responses). 3. Quantify how GHGs and BC alter seasonal Arctic surface freshwater reservoirs and fluxes such as snow depth, extent, and heat conductivity, permafrost depth, soil moisture, and runoff. Observational data 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). Applicants 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 encouraged. Applicants please e-mail your CV, statement of research interests, and contact information for up to three references before 30 April 2008 to Dr. Charlie Zender .