1. Department of Atmospheric and Oceanic Science, University of Maryland , College Park, MD, >USA
2. Earth System Science Interdisciplinary Center, University of Maryland , College Park, MD, >USA
3. Institute for Physical Science and Technology, University of Maryland , College Park, MD, >USA
4. Center for Scientific Computation and Mathematical Modeling, University of Maryland , College Park, MD, >USA
5. Naval Research Laboratory , Monterey CA, >USA