For a decade I have chronicled glacier change in a weekly post as part of the AGU Blogosphere. I typically examine a specific glacier or field area. shairng my specific observations of the glaciers in the images presented, usually  the key changes have happened in the last few months, with reference to relevant literature. When I joined the AGU Blogosphere in 2014 I had been blogging for five years with about 400 posts, I then added 600+ blog posts here.  All of the blog posts at the original site and created here at the AGU site (over 1000 total) have now been republished at the for ..read more

The snow line (yellow dots) on Mount Everest region glaciers on Jan. 10, 2024 in this Landsat image average 6020 m. This is a 200 m rise from October 22, 2023. The passes at Nangpa La and Nup La are both snow free. The rise has occurred during a prolonged dry period, temperatures have been cold as is typical. Mount Everest glaciers are summer accumulation-type glaciers with a~75% of annual precipitation occurring during the summer monsoon (JJAS). The summer monsoon period also has the highest melt rates at lower elevations on the glaciers. October has been considered the end of the melt seaso ..read more

View of Lago Guillermo in true color Sentinel 2 images from Dec. 31 2023 and Jan 12 2024. Illustrating drainage of Lagor Guillermo (LG). Revealing more of the Peninsula (P). Upsala Glacier (U) had impounded this lake since formation by 1957. Lago Guillermo draining during early January 2024 as revealed by Landsat images. Notice inlet left dry at Arrow 1, Arrow 3 ad Arrow 4. New islands at Arrow 2. Lago Guillermo developed by 1957 as Upsala Glacier, Southern Patagonia Icefield retreated (Warren et al 1995). By 1999 a peninsula was evident extending south into the lake from the glacier terminu ..read more

The Triplets and Cascade Peak glacier in GLIMS glacier viewer with the red outlines of the 1958 and 2015 margins and the black dot indicating they are now extinct. In a 1993 Washington Geology article I noted that “In the Cascade Pass area two small glaciers in Torment Basin and two beneath the Triplets Peak and Cascade Peak have altitude ranges of less than 150 m. These glaciers in 1985, 1987 and 1992 were entirely in the ablation zone if present conditions persists they will disappear.” This is an update on the glaciers below The Triplets and Cascade Peak. The threshold for a glacier to exi ..read more

Kanchenjunga Glacier in Nov. 8, 2023 false color Sentinel image.  The flowlines of the six tributaries shown in green with the snowline on each at the purple dots. Percentage of glacier length above the snowline for each tributary shown as percentage. Two rapidly expanding supraglacial lakes shown at yellow arrows. Kanchenjunga Glacier is the main glacier draining west from Kanchenjunga Peak draining into the Ghunsa River. Lamsal et al (2017). report a loss of -0.18 m/year from 1975-2010. They noted an increase in supraglacial ponds and that the glacier had decreased in thickness ma ..read more

Continental Glacier in 1994 Google Earth and 2016 and 2022 Sentinel images, illustrating the separation at the black arrows, into the northern middle and southern parts, with an impending separation at green arrow. Continental Glacier is a long plateau glacier draped along the continental divide in the Wind River Range, Wyoming. It drains into Torrey Creek and then the Wind River. In 1994 this glacier extended 5 km from south to north with an area of 2.4 km². In 2012 Van Looy et al (2013) used GPR to determine ice thickness and project how long the glacier could last.  They found 59% of ..read more

Storstrømmen and L. Bistrup Brae in Landsat imagery from 8-23-2013 and 8-26-2023. Green dots on 2013 image is the 2023 margin. Yellow dots on 2023 image is the 2013 margin. Island A and Island B are at the glacier front in 2013 and are fully separated by 2023. R=Randsoen proglacial lake. Storstrømmen and L. Bistrup Brae are large outlet glaciers in northeast Greenland that join at their terminus.  The calving front is long and has numerous island pinning points. They comprise a large relatively flat low lying terminus region, the southernmost floating ice tongue in East Greenland. Rignot ..read more

Field team standing at the 2022 terminus location of Easton Glacier looking at one year of retreat on August 11, 2023. The summer of 2023 was our 40th field season observing the response of North Cascade glaciers to climate change. Each year we visit a series of glaciers on the same date to complete our annual examination. We carry all of the equipment to each field site in backpacks and camp in tents near the glacier. All the glaciers we observe, except Easton Glacier, are in Wilderness Areas. This precludes the use of mechanized equipment or leaving instruments behind. We work each day in a ..read more

This is a portion of the island emerging from beneath the terminus with the 20-50 m high ice front in July 2023, the main portion of the island extends to the left and then out from the glacier. (Bischke/Biner/Bessen/Klemmensen) Coronation Glacier is the largest outlet glacier of the Penny Ice Cap on Baffin Island. The glacier has an area of ~660 square kilometers and extends 35 km from the edge of the ice cap terminating in Coronation Fjord. Retreat from 1989 to 2023 has been 1050 m on the northern side of the fjord and 900 m on the south side of the fjord. The average retreat of 975 m in 33 ..read more

Bernardo Glacier in Landsat images from Oct. 16, 2022 and Sept. 17, 2023 illustrating the drainage of the southern end of the proglacial lake by the northern terminus (N). The lake was full in 2021, partially drained by Oct. 2022, further drained by March 2023 and has not signficantly refilled by Sept. 2023, still 8 km² of exposed lake bed.  Bernardo Glacier in Landsat images from 1986 and 2021 illustrating retreat at the southern (S), middle (M) and northern (N) terminus respectively. Red arrows are 1986 terminus locations, yellow arrows are 2021 terminus locations. Separation from Tem ..read more