November 2, 2018

Breney Glacier Switzerland Accelerating Retreat 1988-2018

Breney Galcier, Switzerland in Landsat images from 1988 and 2018.  Red arrow = 1988 terminus location, yellow terminus =2018 and purple dots the snowline.  B=Breney Glacier, G=Gietro Glacier, L=Lateral Moraine, M=Lac Mauvoisin and O=Otemma Glacier. Breney Glacier (B) is in the next valley to the north of Otemma Glacier (O) and south of Gietro Glacier (G), it  flows southwest into Lac de Mauvoisin (M). Breney Glacier is one of the …


October 30, 2018

Wrangell Mountain Icefields, Alaska Lose their Snowcover 2016 and 2017

Mount Gordon Icefield (MG) Mesa Creek Icefield (MC) and Icefield Plateau (IP) in 2016 and 2017 Landsat imagery.  The purple dots indicate the areas with retained snowcover in both years. Nabesna Glacier (N) is the largest glacier in the Wrangell Mountains, just a corner seen here. Mount Gordon Icefield (MG) Mesa Creek Icefield (MC) and Icefield Plateau (IP) are three neighboring Icefields in the Wrangell-Saint Elias National Park and Preserve …


October 26, 2018

Lapche Glacier, China Supraglacial Ponds Transitioning to Lake

Lapche Glacier (Tibet 1), China in 1992 and 2018 Landsat images.  The expansion of supraglacial ponds is evident between Point 2 and 3. A tributary that detaches between 1992 and 2018 is indicated by red arrow.  The end of the clean ice and start of debris cover ice is just below Point 1 in 1992 and well above this Point in 2018.  Lapche Glacier (Tibet 1), China flows east from …


October 23, 2018

Sermip Nunataa, Greenland No Longer a Nunatak

Sermip Nunataa (S) and nearby nunataks in 1993, Q, R and B in 1993 and 2018 Landsat images.  Red dots indicate the 1993 margin.  Sermip Nunataa (Nunatak-Island within ice sheet glacier) was a nunatak of the southern Greenland Ice Sheet between Sermilik Brae and Sondre Qipisaqqu Brae.  Here we examine changes from 1993-2018 of the margin of the ice sheet in the area and the impact on this and neighboring …


October 18, 2018

Talchako Glacier, British Columbia Retreat 1987-2018

Talchako Glacier change revealed in 1987 and 2018 Landsat images.  Red arrow is 1987 terminus location, yellow arrow 2018 terminus, orange arrow a tributary from the north and purple dots the snowline.  Talchako Glacier is the largest outlet glacier of the Monarch Icefield in the Coast Range of British Columbia and is the headwaters of the Talchako River. VanLooy and Forster (2008) noted that the glacier retreated at a rate of …


October 15, 2018

Meade Glacier, Alaska 4 km Retreat 1986-2018

Meade Glacier in Landsat images from 1986 and 2018.  The red arrow indicates the 1986 terminus, pink arrow the 2014 terminus, yellow arrow the 2018 terminus, orange arrows tow tributaries to Meade Glacier and the purple dots the snowline. Meade Glacier drains the northwest portion of the Juneau Icefield, with meltwater entering the Katzehin River and then Chilkoot Inlet. The glacier begins in British Columbia and ends in Alaska. Here …


October 10, 2018

Vera Glacier, Novaya Zemlya Retreat

Vera Glacier in Landsat images from 1990 and 2018. Red arrow is the 1990 terminus and yellow arrow the 2018 terminus location.  Purple dots indicate the snowline, E indicates the eastern tributary and S the bedrock step. Vera Glacier is on the west coast of Northern Noyaya Zemlya terminating in a fjord  Carr et al (2017) examined Novaya Zemlya glacier retreat between 1973/76 and 2015, finding that between 2000 and 2013, retreat …


October 5, 2018

Inostrantseva Glacier, Novaya Zemlya Retreat Drives Separation

Inostrantseva Glacier (I) and Pavlova Glacier (P), Novaya Zemlya in 1995 and 2017 Landsat images.  Red arrow indicates the 1995 terminus, yellow arrow the 2017 terminus and purple dots the snowline.  Inostrantseva Glacier is on the west coast of Northern Noyaya Zemlya terminating in Inostrantseva Bay along with Pavlova Glacier.  Carr et al (2017) examined Novaya Zemlya glacier retreat between 1973/76 and 2015, finding that between 2000 and 2013, retreat rates …


October 2, 2018

High Glacier Snow Line Post-Monsoon 2018 on Bhutan-China Border

Angge Glacier (A) and Bailang Glacier (B) in China and Chubda Glacier (C) in Bhutan in Post Monsoon 1995 and 2018 Landsat images indicating the snowline purple dots is exceptionally high in 2018.  Red arrow is the 1995 terminus location and yellow arrows the 2018 terminus location. Point 1-3 are glacier passes from China into Bhutan. The end of the monsoon season leads to finally some clear satellite images of …


September 28, 2018

Taku Glacier, Alaska in 2018 Highest Snowline in 70+ years

Taku Glacier transient snowline (purple dots) in Landsat images from 7/21 and 9/16/2018. The Juneau Icefield Research Program (JIRP) has been examining the glaciers of the Juneau Icefield since 1946. Until the NASA Landsat program began, field measurements and aerial observations were the only means to observe the glaciers of the icefield. For more than 40 years it was Maynard Miller, U of Idaho, who led this expedition that has trained so …