Mauri S. Pelto, Director  Founded 1983
Nichols College, Dudley, MA

Mass Balance

Mass balance Data

Ice Worms
Google earth Distribution map file. 
Snowpack Changes: Snowpack-Precipitation Ratio Terminus Behavior
Google Earth Tour of Monitored Glaciers
Terminus Data Set
Glacier Runoff

Glacier runoff  charts

Updated 11/23/09

Glacier disequilibrium-Which will survive?

Easton Glacier 2009 Mass balance

Milk Lake Glacier Disappeared

Columbia Glacier 25 years of observations

Hinman Glacier Loss

Glacier Survival Forecasts

Introduction to North Cascade Glaciers

Glaciers and Hydropower 

Global glacier retreat

Lyman Glacier disappearing

Terminus Behavior of Juneau Icefield Glaciers

Terminus Response time

Deming Glacier-Bellingham Water Supply

Baker Lake Glacier Runoff  

Mountain Goats

Big Four

Death of a glacier

NCGCP Publications last 8 years downloadable

North Cascade Terminus changes

Global Warming Impacts 

Climate Change North Cascades

Mass balance variation across the North Cascades:  

Summer Snowpack Variations

Northwest Mountaineering J. Article 

Change in glacier thickness along longitudinal profiles, N. Cascade glaciers.

Photo Glossary of Glaciers

Research Reports
Field Report 2009
Field Report 2008 
Field Report 2002:
Field Report 2007
Field Report 2006
Field Report 2001; 
Field Report 2000;
Field Season 2005 Field Report 1999;
Field Report 2004: Field Report 1998
Field Report 2003:  Field Report 1997;
  Field Report 1995;

Cirque Moraines Fieldwork of William A. Long  1944-1996. 

Lemon Creek-Mass balance of this Juneau Icefield Glacier.  

Taku Glacier- Mass balance of this Juneau Icefield glacier 1950-2006

Other Sites- Other Regional Sites.

Impact of Sampling Density

Accumulation variation on glaciers and alpine areas North Cascades, 

Ablation variation on glaciers and alpine areas, North Cascades  

Mass Balance Of Adjacent Debris

2009 was a year of exceptional summer warmth in the North Cascades.  The resulting ablation led to a negative mass balance of 1.93 m for the year. This is equivalnet to a 2.1 m slice of each glacier lost.  Given the average thickness of North Cascade glaciers at 50 meters, this is a 4% loss of total volume in one season. 2009 Field Report

Lyman Glacier taken from same location in 1921 and 2005.

Loss of glacier volume since 1984, represents 20-40% of entire glacier volume.

Assistants 1983-2006: Cliff Hedlund, John Brownlee, Gregg Maddrey, Cliff Mitchell, Joe Drumheller, Richard Campbell, Monica Gowan, David Knoll, Mike Carver, Ann Fitzgerald, Jill Turner, Bill Prater, Scott Townsend, Dan Kaplinski, Don Sayegh, Doxey Kemp, Greg Langkamp, Seth Lemke, Kate Johnson, Kalman Barcsay, Zolt Barcsay, Joel Harper, Lee Scheper, Jarle Seche Jensen, John Maggiore, Mike Hylland, William Long, Bruce Williamson, Paula Hartzell, Ben Barrett, Ed Blanchard, Joe Wood, Richard Taylor, Tim Bartholomaus, Tom Hammond, Will Wright, Ben Pelto, Erik Budsberg, Quin Ourada, Maria Coryell Martin, Brad Markle, Chris Lyles, Shannon Skinner, Jill Pelto

Early August on Sholes glacier in 2009, limited snowcover, by summers end 90% of the glacier was bare ice.


Glacier mass balance is assessed in crevasses such as this on Easton Glacier.  Note the horizontal horizon marking the 2007 summer surface with 3 .2 m of 2008 winter snowpack on top.

Terminus of Lower Curtis Glacier in 2009