1. Cooperative Institute for Research in Environmental Sciences; University of Colorado at Boulder; Boulder; Colorado; USA
2. Department of Civil, Environmental, and Architectural Engineering; University of Colorado at Boulder; Boulder; Colorado; USA
3. Geophysical Institute; University of Alaska Fairbanks; Fairbanks; Alaska; USA
4. Department of Aerospace Engineering Sciences; University of Colorado at Boulder; Boulder; Colorado; USA
5. Institute of Arctic and Alpine Research; University of Colorado at Boulder; Boulder; Colorado; USA