1. Department of Environmental Science and Engineering; Ewha Womans University; Seoul Korea
2. Center for Climate/Environment Change Prediction Research; Ewha Womans University; Seoul Korea
3. Jet Propulsion Laboratory; California Institute of Technology; Pasadena CA USA
4. School of Earth and Environmental Sciences; Seoul National University; Seoul Korea
5. School of Environmental Science and Engineering; South University of Science and Technology of China; Shenzhen China
6. National Drought Mitigation Center; University of Nebraska-Lincoln; NE USA