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September 13, 2021

Southeast Glacier #3, Devon Ice Cap, Canada Recent Retreat

Southeast #3 Glacier, Devon Ice Cap in July 9, 2016 and August 29, 2021 Sentinel 2 images of the lower 10 km  showing three supraglacial streams S1, S2 and S3 and the outlet plumes of each stream at Point 1-3. The yellow line is the 2016 margin. The southeast sector of the Devon Ice Cap, Devon Island, Nunavut has three tidewater outlet glaciers Southeast Glacier #1, #2 and #3.  Van …

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September 7, 2021

Adams Glacier, Washington 50% area loss since 1998, No retained Snow in 2021

Adams Glacier in Sentinel 2 False Color image from 8-30-2021. Green dots indicate margin of the Adams Glacier and the now separated Adams Outlier section. The pink arrows indicate the top and bottom of the icefall. F=regions of exposed firn, A=areas of perennial retained accumulation.  Adams Glacier descends the north side of Mount Adams a 3743 m stratovolcano in the Cascade Range of Washington.  The glacier begins from the summit …

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August 29, 2021

Whitney Glacier , Mount Shasta Losing all of its Snowcover and Separating in 2021

Sentinel 2 False and True Color images from 8-25-2021.  Yellow arrows indicate where glacier is separating and blue arrows the small remanent of 2021 snowpack remaining. This remanent will not last to the end of the melt season.  The summer of 2021 is proving to be catastrophic for Whitney Glacier on Mount Shasta, California in terms of volume loss, ~15-20% this year leading to long term impacts, adding to the …

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August 22, 2021

A Tale of Two Glaciers Columbia and Easton Glacier 2021

Terminus of Columbia Glacier on left with 1984 terminus location noted.  Observe the avalanche fans (A) and the relatively high snowcover on 8-2-2021.  At right is Easton Glacier on 8-11-2021 with the location of the 1990 terminus indicated, 440 m of retreat to the 2021 terminus position. The glacier has only 38% snowcover at this time, which is better illustrated below. Columbia and Easton Glacier in the North Cascade Range …

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July 27, 2021

NORTH CASCADE GLACIER CLIMATE PROJECT 2021 -38th Annual Field Program

A few measures of what it takes to execute a field monitoring program of glaciers for 37 years, with no helicopter support (Illustration by Megan Pelto). 2021 Field Season: For the 38th consecutive summer we are heading into the field later this week to measure the impact of climate change on North Cascade glaciers. We will complete detailed measurements on 10 glaciers, three of which are part of the World …

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July 21, 2021

Tulsequah Glacier, BC 2021 Glacier Lake Outburst Flood

  Landsat images of Tulsequah Glacier on June 22 and July 5, 2021.  Lake No Lake is between the yellow arrows with the margin of glacier extending upvally on June 22nd. By July it has receded back to main valley and lake has largely drained. The former location of Tulsequah glacier dammed lake is at red arrow. Tulsequah Glacier, British Columbia drains east from the Juneau Icefield and is best …

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July 15, 2021

Sheridan Glacier, Alaska Retreat Causes Rapid Lake Expansion

Sheridan Glacier in 2002 and 2020 Landsat images illustrating retreat of the margin and expansion of the lake. Red arrow is 2002 margin on small island, yellow arrow is 2020 terminus location just north of Sherman Glacier stream and purple dots are the snowline. Sheridan Glacier in the Chugach Mountains of Alaska begins at 1500 m and flow southwest out of the mountains with the terminus spreading out in a  …

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July 9, 2021

Porcupine Glacier, British Columbia Southern Terminus Breakup

Porcupine Glacier, British Columbia in a July 4, 2021 Sentinel image illustrating the retreat from 2015-2021 and new iceberg breakup (B). Red arrow is 2015 terminus location and yellow arrows 2021 terminus locations of both branches. Porcupine Glacier is a 20 km long outlet glacier of an icefield in the Hoodoo Mountains of Northern British Columbia that terminates in an expanding proglacial lake. During 2016 the glacier had an unusually …

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June 29, 2021

Pacific Northwest June 2021 Heat Wave Current and Enduring Glacier Impact

Streamflow observation site below Sholes Glacier on August 6, 2015.  We have measured flow at this site for 30 years, the last 10 years in conjunction with the Nooksack Indian Tribe (Grah and Beaulieu, 2013; Pelto, 2015). The exceptional record breaking Pacific Northwest heat wave of June 2021 had an impact on snow melt both on and off glaciers in the North Cascade Range of Washington and consequently on alpine …

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June 25, 2021

Paarliit Sermia, Southern Greenland Terminus Separation

Paarliit Sermia in 2000 and 2020 Landsat images.  The red arrow indicates the 2000 terminus location and the yellow arrow the 2020/21 terminus location. A denotes the junction of two main glacier branches, while B,C and D indicate tributaries Paarliit Sermia is one of the most southerly tidewater glaciers in Greenland.  It is an outlet glacier of a mountain icefield and not part of the main ice sheet.  Similar to …

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