1. College of Forestry; Oregon State University; Corvallis OR 97331 USA
2. National University of Mongolia; Ulaanbatar Mongolia
3. NASA Goddard Space Flight Center; 8000 Greenbelt Road Greenbelt MD 20771 USA
4. Joint Center for Earth System Technology; JCET; University of Maryland; Baltimore County; 1000 Hilltop Circle Baltimore MD 21250 USA