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April 27, 2018

How Unusual Was 2015 in the 1984–2015 Period of the North Cascade Glacier Annual Mass Balance?

Sholes Glacier during the first week of August 2015 versus and average year such as in 2017.  Note stream gage and weather station at this site. The greater extent of bare ice enhances ablation as for a given temperature there is a higher ablation rate for ice then snow. Columbia Glacier a WGMS reference glacier viewed from above the glacier at Monte Cristo Pass at the start of August in 2015 …

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April 20, 2018

Lago Cholila, Argentina Headwaters Glacier Retreat Lake Formation

Changes in four glacier at the headwaters of Rio Tigre, Argentina in 1987 and 2017 Landsat images.  The red arrow indicate the 1987 terminus position and the yellow arrow the 2017 terminus position.  Glaciers form the headwaters for Lago Cholila which drains into  Futaleufu River in west central Argentina .  Davies and Glasser (2012) mapped the glaciers in the Hornopiren region just to the northwest and Parque Nacionale Corcovado just to the …

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April 18, 2018

Qiaqing Glacier Retreat & Lake Expansion, China

Qiaqing Glacier in 1992 and 2017 Landsat images indicating flow, blue arrows, 1992 terminus at red arrow and 2017 terminus at yellow arrow. tributaries A, B and C.  “Qiaqing” Glacier drains southeast from the Kona Kangri Massif at the eastern part of the Nyainqentanglha Shan. The glacier ends in a lake before feeding into the Parlung Zangbo and then Yarlung Tsanpo. This glacier feeds the Parlung Zangbo which is the …

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April 13, 2018

Pico Alto Glacier, Chile Retreat New Lake Formed

Pico Alto Glacier, Chile in 1986 and 2017 Landsat images indicating the retreat.  Red arrow indciates 1986 terminus, yellow arrow the 2017 terminus,and purple dots the snowline.  Pico Alto Glacier, Chile drains north from the Argentina-Chile border entering the Rio Puelo and eventually Lago Tagua. The glacier ongoing retreat is similar to the nearby Hornopiren Glacier and Erasmo Glacier.  Davies and Glasser (2012) mapped the glaciers in the Hornopiren region and found …

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April 10, 2018

Mityushikha Ice Caps Separation, Novaya Zemlya

Mityushikha Ice Cap (M) and West Mityushikha Ice Cap (WM) arrows indicating locations of glacier  separation or glacier margin change.  Mityushikha Ice Caps are a group of small ice caps near the southern end of the glaciated mountains of Novaya Zemlya. Here we examine two of these ice caps using Landsat imagery from 1994-2017. Much attention has focused on the retreat of the larger tidewater glaciers of Novaya Zemlya, that …

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April 6, 2018

North Cascade Winter Snowpack Status 2018

2018 Winter Freezing levels at Mount Baker (November 2017-March 2018).  The accumulation season on most Northern Hemisphere glaciers extends through April. The key benchmark for snowpack water assessment in alpine ranges is typically April 1, as that is the average maximum snowpack for an alpine range.  In 2018 the North Cascade Range had freezing levels above the long term mean, but at the 21st century mean. A result of higher …

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April 3, 2018

Warsaw Icefield, King George Is., Antarctica Retreating from Shoreline

Warsaw Icefield, King George Island, Antarctica glacier retreat and nunatak expansion in 1989, 2001 and 2018 Landsat images. E=Ecology Glacier, B=Baranowski Glacier, W=Windy Glacier, 1989 terminus locations indicated by red arrows.  Point A & B are nunataks.  The Arctowski Polish Research Station is located on a relatively large ice-free oasis northeast of the Warsaw Icefield on King George Island, Antarctica. The station is on Admiralty Bay where  Ecological monitoring has been …

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March 29, 2018

Cook Ice Cap Retreat & Nunatak Expansion, Kerguelen Island

West margin of Cook Ice Cap in 2001 and 2018 Landsat images.  Red arrows indicate terminus margin in 2001 in both images. Nunataks A-D and Nunatak Lacroix (L) are also shown. On the west side of the Cook Ice Cap on Kerguelen Island a series of outlet glaciers have retreated and several nunataks have either expanded or are no longer surrounded by ice.   The glacier include Pasteur, Pierre Curie, Larmarck …

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March 22, 2018

Heilprin Glacier, NW Greenland Pinning Point Decline 1987-2017

Heilprin Glacier in 1987 and 2017 Landsat images.  The ice front is shown with yellow dots. Island A, Island B and Point C also are noted. Island A and B both have reduced ice contact, but remain as important pinning points. How much longer for Island A?  Retreat from 1987-2017 is 1.6 km to the south, 1.1 km in the center and 2.2 km on the northern margin. Heilprin Glacier is …

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March 19, 2018

Sermeq Kuadtleq, Greenland Retreat Island Development Nunatak Expansion.

Sermeq Kuadtleq in Landsat images from 1999, 2013 and 2017.  The red arrow is the 1999 terminus location, yellow arrow is the 2017 terminus location. Nunatak 1 and 3 are noted and the developing Island 2.  Sermeq Kuadtleq (not only glacier in Greenland with this name) flows south to Prince Christian Sound from an icecap peripheral to, but connected to the Greenland Ice Sheet.  As such the glacier is not …

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