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July 2, 2020

Global Glacier Change Bulletin 3 (WGMS) Reports Increasing Mass Balance Losses

Figure 1. Regionalized mean annual mass balance of WGMS reference glaciers 1980-2018, with 2019 being a mean of reference glaciers. Glaciers have been studied as sensitive indicators of climate for more than a century and are now experiencing a historically unprecedented decline (Zemp et al, 2015).  Glacier fluctuations in terminus position, mass balance and area are recognized as one of the most reliable indicators of climate change. This led to …

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June 23, 2020

Upsala Glacier, Argentina Limited Snowcover Cloak as 2020 Melt Season Ended

Upsala Glacier transient snowline (TSL) in Landsat images from April 8 and April 17, 2020. TSL is indicated by purple dots, Point A and B are the same nunataks in each image. On April 8 the TSL almost reaches the divide with Viedma Glacier (V).  Glaciers exist and survive when the majority of the glacier is always snow covered even at the end of the summer melt season. For a …

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June 12, 2020

Vilkitskogo Glacier, Novaya Zemlya Retreat Releases Islands 1990-2020

  Vilkitskogo Glacier North (VN) and South (VS) terminus in 1990 and 2020 Landsat images. Terminus in 1990 ends on an island forming. Red arrow is 1990 terminus, yellow arrow is the 2020 terminus.  The 2020 image is from early June and shows low snowpack for so early in summer. Vilkitskogo Glacier has two termini that had just separated in Vilkitsky Bay in 1990.  The glacier flows from the Northern …

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June 4, 2020

Pacliash Glacier, Peru Retreat and Lake Expansion

Retreat and lake expansion at Pacliash Glacier (PH) and Palcaruja Glacier in the Cordillera Blanca, Peru illustrated with 1988, 2000 and 2019 Landsat images.  Red arrow is the 1988 terminus, yellow arrow the 2019, purple dots are the snowline. Pacliash Glacier is in the Cordillera Blanca of Peru, on the northeast flank of Palcaraju and Tocllaraju had until recently terminated in Laguna Pacliashcocha.  This region has seen substantial glacier retreat …

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May 27, 2020

Darwin Glacier, Chile 1986-2020 Retreat Opens New Fjord Arm

Darwin Glacier in Landsat images from 1986 and 2020. Red arrow indicates 1986 terminus location, yellow arrow 2020 terminus location, purple dots the snowline.  Point 1,2 and 3 indicate the same specific location. Darwin Glacier flows east from the main divide of the Cordillera Darwin entering the head of Fjord Parry. Here we examine changes illustrated by Landsat images from 1986-2020.   Melkonian et al (2013) note widespread thinning of four large glaciers …

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May 18, 2020

Talking about Iceberg Melt Rates and Glacier Frontal Ablation: Seller and Heim Glacier, Antarctica

Figure 1: Study sites considered in this article: Seller Glacier and Heim Glacier (Landsat-8 image courtesy of the U.S. Geological Survey) Post by Mariama Dryak Iceberg melt is caused by the temperature of the water in which an iceberg floats and the velocity of the water flowing around the iceberg. As a result, iceberg melt is an excellent indicator for the ocean conditions in which an iceberg resides. Given the …

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May 13, 2020

Frank Mackie Glacier, BC Retreat Forming Lake

Frank Mackie Glacier, British Columbia in Landsat images from 1987 and 2019.  Red arrow is the 1987 terminus location, yellow arrow the 2019 terminus location and purple dots the snowline. Point 1-3 are specific locations where bedrock exposure has expanded. Frank Mackie Glacier is at the headwaters of the Bowser River which flows into Bowser Lake and the Nass River in NW British Columbia. The glacier has repeatedly advanced across …

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May 5, 2020

Huron Glacier Retreat, Livingston Island, Antarctica 2001-2020

Huron Glacier (H) and Kaliakra Glacier (K) in 2001 and 2020 Landsat images.  Extensive retreat at bedrock locations Point A and B with limited retreat at C and D. Livingston Island, Antarctica is part of the South Shetland Island chain and is primarily covered by glaciers.  At the eastern end is Huron Glacier. Huron Glacier and the adjacent Kaliakra Glacier are tidewater outlet glaciers terminating in Moon Bay on the …

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April 27, 2020

Vern Ritchie-Battle Glacier, British Columbia Retreat, Lake Growth, Snowline Rise

Vern Ritchie (VR) and Battle Glacier (B) in 1987 and 2019 landsat images.  Three proglacial lakes have expanded at Points 2-5. WN=West Nunatak Glaier, Y=Yakutat Glacier N=Novatak Glacier, purple dots indicate snowline and green arrows indicate glacier flow direction. Vern Ritchie and Battle Glacier flow from the Alaska/Canada border of the St. Elias Mountains towards the Alsek River. In 1987 the two glaciers that share both an accumulation zone and …

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April 20, 2020

Kolahoi Glacier Retreat and Lidder Watershed Changes, Kashmir

Kolahoi Glaciers (G1 and G2)  in 1993 and 2019 Landsat images.  Red arrow indicates 1993 terminus location and yellow arrow the 2019 terminus location.  The purple arrow indicates a debris covered area of a tributary to G1 that does not have active flow and will be disconnected. A new terminus is forming at yellow arrow left of purple arrow.  Purple dots is snowline. The Kolahoi Glacier in Kashmir is known …

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