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You are browsing the archive for baffin island glacier melt 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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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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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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