Professor of Environmental Science at Nichols College since 1989. Director of North Cascade Glacier Climate Project since 1983.

Recent Articles

Zaroshkul Glacier Retreat, Tajikistan

Zaroshkul Glacier in 1994 and 2018 Landsat imagery. Z=Zaroshkul Lake, A=Developing lake, red arrow=1994 terminus, yellow arrow=2018 terminus and purple dots=snowline. Zaroshkul Lake is in the midst of the Pamir Range, Tajikistan and is surrounded by glacier clad mountains.  Here…

Northern Patagonia Icefield High Equilibrium Line Altitude in 2019

Northern Patagonia Icefield Landsat view on 4/6/2019. Transient snowline indicated on individual glaciers with purple dots. Clockwise, L=Leones, So=Soler, N=Nef, Ca=Cachet, Co=Colonia,  PN=Pared Nord, PS=Pared Sur, H4=HPN4, St=Steffen, A=Acodado, B=Benito, H1=HPN1, Sq=San Quintin. The Northern Patagonia Icefield from 1987-2015 decreased…

Nakonake Glaciers, BC Retreat Two are Disappearing

Nakonake Glaciers in 1984 and 2018 Landsat images. Nakonake Glaciers are NW=Northwest, N=North, M=Middle, S=South, SE=Southeast.  Red arrows indicate the 1984 terminus position of the North and Middle Nakonake Glaciers.  Yellow arrows indicate the 2018 terminus location of each. Purple…