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You are browsing the archive for Baffin Island glacier retreat Archives - AGU Blogosphere.

7 July 2019

Penny Ice Cap NW Thinning and Retreat Evident

The Northwest (NW) and Northnorthwest (NNW) outlet of the Penny Ice Cap in 1991 and 2019 Landsat images. Red arrow indicates the 1991 terminus location. Point 1 is a large proglacial, Point 2-4 are areas of emerging and expanding bedrock amidst the ice cap. The two largest outlet glaciers of the NW quadrant of the Penny Ice Cap feed the Isurtuq River.  In 1991 both outlet glaciers terminated at 600 …

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1 July 2019

Fork Beard Glacier, Baffin Island High June 2019 Temperatures and Snowline

Fork Beard (F) and Nerutusoq Glacier (N) Baffin Island on June 1, 2019,  June 18, 2019 Sentinel images and June 30 Landsat image. Purple dots indicate the snowline.  Fork Beard Glacier (F) is an outlet glacier of a mountain glacier complex just southeast of Penny Ice Cap on Baffin Island.  Nerutusoq Glacier  (N) also drains from the same complex. Here we examine the rapid rise of the snowline from June …

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14 June 2018

Coutts Ice Cap, Baffin Island Fragmentation

Coutts Ice Cap in  Landsat images from 1986 and 2017.  The terminus location of the main glacier terminating in the large lake is indicated by dots.  Tributary Glaciers 1-6 represent locations where glaciers have separated or a glacier has retreated from a lake.  Coutts Ice Cap is on between Coutts Inlet to the west and Buchan Gulf to the east on the north shore of Baffin Island near its northeastern …

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11 May 2017

Borden Peninsula Ice Caps, Baffin Island Snowcover Where Art Thou

Borden Peninsula Ice Cap in 1997 and 2016 Landsat images.  Purple dots indicate the transient snowline.  Orange arrows indicate specific location of glacier thinning, retreat or area loss.  The Borden Peninsula is in the northeastern most section of Baffin Island.  Here we examine an ice cap that is on the edge of Lancaster Sound in Sirmilik National Park.  We use Landsat imagery from 1997 through 2016 to identify change.  This …

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20 January 2017

Penny Ice Cap Northern Outlet Retreat, Baffin Island

Penny Ice Cap Northern Outlet Glacier #43 in 1989 and 2016 Landsat images. Red arrow indicates 1989 terminus, yellow arrow 2016 terminus.  Two peripheral ice masses are at Point A and B.  The primary northern outlet from the Penny ice Cap is an unnamed glacier, noted as #43 in the recent study by Van Wychen et al (2015). it is one of two large tidewater outlet glaciers on Baffin Island. Here …

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9 January 2017

Coronation Glacier, Baffin Island Retreat Leads to Building a New Island

A Landsat image from 1989 and a Sentinel 2 image from2016 illustrate the retreat of Coronation Glacier.  Red arrows indicate the 1989 terminus and yellow arrows the 2016 terminus location.  Purple numbers 1-5 indicate locations of tributary retreat or thinning. Purple numbers 6-9 are icecaps that did not retain snowcover in 2016.  Coronation Glacier is the largest outlet glacier of the Penny Ice Cap on Baffin Island. The glacier has …

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18 November 2016

Barnes Ice Cap, Baffin Island Evident Response to Climate Change

Barnes Ice Cap transect and closeup of divide area in August 2016.  Black dots indicate summit divide of the ice cap. Notice the channels extending away from the divide.  These are not stream channels, as they are too wide, but they are meltwater formed valleys that are preferred pathways for the meltwater transport. Barnes Ice Cap located in the center of Baffin Island, Canada covers an area of ~5800 km2. …

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20 May 2016

Clephane Bay Ice Cap, Baffin Island Being Erased from Map

Comparison of 1995 and 2014 Landsat images of ice caps A, B, C, D and E.  Pink arrows indicate where A, B and E separated. C and D have disappeared.  F is an outlet glacier with a retreating terminus. The southern part of the Cumberland Peninsula on Baffin Island features many small ice caps. Here we examine the disappearance of two and the separation of two others from 1995 to …

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28 July 2015

Auyuittuq National Park Ice Cap Downwasting, Baffin Island

Just south of the Penny Ice Cap on Baffin Island in Auyuittuq National Park there are a large number of small ice caps.  We focus on three of these ice caps east of Greenshield Lake.  The region has been experiencing rapid ice loss, with 50 % of the ice cap area lost in the last few decades (Miller et al, 2008).  Miller et al (2008) also observe that these are thin …

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1 May 2015

Snow Deficit on Grinnell Ice Cap, Baffin Island, Canada

The Grinnell Ice Cap Is located on the Terra Incognita Peninsula on Baffin Island. The name suggests the reality that this is a not often visited or studied region. Two recent studies have changed our level of knowledge. Way (2015) notes that the ice cap has lost 18% of its area from 1974 to 2013 and that the rate of loss has greatly accelarated and is due to summer warming, …

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10 March 2013

Dexterity Ice Cap, Baffin Island

At the south end of Dexterity Fjord on the northeast coast of Baffin Island is an unnamed icecap that I will refer to as Dexterity Icecap. Gardner et al (2012). Gardner et al 2011 and Sharp et al (2011) both note that the first decade of the 21st century had the warmest temperatures of the last 50 years, the period of record. identified that the mass loss had doubled in …

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20 February 2012

Penny Ice Cap southwestern margin retreat

Examination of 1991 and 2009 Landsat imagery highlights the retreat of the Penny Ice Cap at its southwestern margin. The glaciers and lakes in this region are unnamed. The Penny Ice Cap is one of two large ice caps on Baffin Island and is the southernmost of the two, with an area of more than 5600 square kilometers. On the east side the glacier exit the ice cap through spectacular …

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23 April 2011

Penny Ice Cap Retreat, Baffin Island

The Penny Ice Cap is extends north from the Pangnirtung Pass regiion of Baffin Island .. To capture the majesty of the region, you have to turn to the artwork of Cory Trepanier, seen below is his Great Glacier study, not to the science data. The ice cap has been shrinking as evidenced by the retreat of a number of outlet glaciers. This post focuses on two of these glaciers. …

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