1. Department of Geospatial Science; Radford University; Radford VA USA
2. Department of Geography; The University of Southern Mississippi; Hattiesburg MS USA
3. Department of Geography; Indiana University; Bloomington IN USA
4. Department of Geography; University of Vermont; Burlington VT USA
5. Tree-Ring Laboratory; Lamont Doherty Earth Observatory; Palisades NY USA
6. Harvard Forest; Harvard University; Petersham MA USA
7. Geology Department; SUNY Cortland; Cortland NY USA
8. Earth and Ocean Sciences, Nicholas School of the Environment; Duke University; Durham NC USA
9. Department of Geological Sciences; SUNY New Paltz; New Paltz NY USA