Sustained rapid shrinkage of Yukon glaciers since the 1957–1958 International Geophysical Year

Barrand, Nicholas E.; Sharp, Martin

doi:10.1029/2009gl042030

Cited by 30 publications

(38 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Results showed that glaciers in this region lost 22 % of their surface area (a total loss of 2,541± 189 km 2 ) over the 50 year period, representing a total mass loss of 406±177 Gt (equivalent to 1.13±0.49 mm of global sea level rise). Comparison with data from Environment Canada weather stations and the NCEP/NCAR R1 re-analysis indicated that these changes in glacier mass and surface area were coincident with general summer warming (since 1970) and reductions in winter precipitation over the period of record (Barrand and Sharp 2010).…”

Section: Land Icementioning

confidence: 99%

“…New studies of glacier area change were initiated in the Yukon (Barrand and Sharp 2010) and Labrador, in situ measurements of glacier mass balance continued on 4 glaciers in the QEI (Devon Ice Cap, Meighen Ice Cap, Melville South Ice Cap and White Glacier; , and a regional scale study of glacier mass change since 2003 in the QEI, Bylot Island and Baffin Island was completed (Gardner et al 2011). In addition, climate data from Environment Canada weather stations, automatic weather stations on the Devon and Agassiz ice caps, and remotely sensed measurements of ice surface temperature (from Moderate Resolution Imaging Spectroradiometer -MODIS) and melt season duration (for the period 2000-2009; retrieved from the SeaWinds scatterometer on QuikSCAT) were used to document changing melt conditions on ice caps in the QEI and Baffin Island .…”

Section: Land Icementioning

confidence: 99%

“…Changes in the surface area of Yukon glaciers during the 50 years since IGY were assessed via comparison of glacier extents on historical topographic maps and aerial photographs with those derived from recent LandSat7 imagery (Barrand and Sharp 2010). Results showed that glaciers in this region lost 22 % of their surface area (a total loss of 2,541± 189 km 2 ) over the 50 year period, representing a total mass loss of 406±177 Gt (equivalent to 1.13±0.49 mm of global sea level rise).…”

Section: Land Icementioning

confidence: 99%

See 2 more Smart Citations

Variability and change in the Canadian cryosphere

et al. 2012

View full text Add to dashboard Cite

During the International Polar Year (IPY), comprehensive observational research programs were undertaken to increase our understanding of the Canadian polar cryosphere response to a changing climate. Cryospheric components considered were snow, permafrost, sea ice, freshwater ice, glaciers and ice shelves. Enhancement of conventional observing systems and retrieval algorithms for satellite measurements facilitated development of a snapshot of current cryospheric conditions, providing a baseline against which future change can be assessed. Key findings include: 1. surface air temperatures across the Canadian Arctic exhibit a warming trend in all seasons over the past 40 years. A consistent pan-cryospheric response to these warming temperatures is evident through the analysis of multi-decadal datasets; 2. in recent years (including the IPY period) a higher rate of change was observed compared to previous decades including warming permafrost, reduction in snow cover extent and duration, reduction in summer sea ice extent, increased mass loss from glaciers, and thinning and break-up of the remaining Canadian ice shelves. These changes illustrate both a reduction in the spatial extent and mass of the cryosphere and an increase in the temporal persistence of melt related parameters. The observed changes in the cryosphere have important implications for human activity including the close ties of northerners to the land, access to northern regions for natural resource development, and the integrity of northern infrastructure.

show abstract

Section: Land Icementioning

confidence: 99%

Section: Land Icementioning

confidence: 99%

Section: Land Icementioning

confidence: 99%

See 1 more Smart Citation

Variability and change in the Canadian cryosphere

et al. 2012

View full text Add to dashboard Cite

show abstract

“…Arendt and others, 2002; Larsen and others, 2007;Berthier and others, 2010). In light of the widespread glacier retreat since the first maps were compiled (Barrand and Sharp, 2010; Bolch and others, 2010; Le Bris and others, 2011), the glacier outlines further became outdated, increasing the need for a detailed, modern-date inventory for Alaska.…”

Section: Introductionmentioning

confidence: 99%

Derivation and analysis of a complete modern-date glacier inventory for Alaska and northwest Canada

et al. 2015

View full text Add to dashboard Cite

ABSTRACT. We present a detailed, complete glacier inventory for Alaska and neighboring Canada using multi-sensor satellite data from 2000 to 2011. For each glacier, we derive outlines and 51 variables, including center-line lengths, outline types and debris cover. We find 86 723 km 2 of glacier area (27 109 glaciers >0.025 km 2 ), �12% of the global glacierized area outside ice sheets. Of this area 12.0% is drained by 39 marine-terminating glaciers (74 km of tidewater margin), and 19.3% by 148 lake-and river-terminating glaciers (420 km of lake-/river margin). The overall debris cover is 11%, with considerable differences among regions, ranging from 1.4% in the Kenai Mountains to 28% in the Central Alaska Range. Comparison of outlines from different sources on >2500 km 2 of glacierized area yields a total area difference of �10%, emphasizing the difficulties in accurately delineating debris-covered glaciers. Assuming fully correlated (systematic) errors, uncertainties in area reach 6% for all Alaska glaciers, but further analysis is needed to explore adequate error correlation scales. Preliminary analysis of the glacier database yields a new set of well-constrained area/length scaling parameters and shows good agreement between our area-altitude distributions and previously established synthetic hypsometries. The new glacier database will be valuable to further explore relations between glacier variables and glacier behavior.

show abstract

“…The GLIMS program has led to comprehensive glacier inventories in many polar and alpine regions and contributes to regional glacier change assessments (e.g. Knoll and others, 2009; Paul and Andreassen, 2009; Barrand and Sharp, 2010; Bolch and others, 2010; Paul and Svoboda, 2010; Davies and Glasser, 2012; Pan and others, 2012). As a result, glacier inventories utilizing GLIMS protocols have contributed to a near-globally complete dataset of glacier outlines (Arendt and others, 2013).…”

Section: Introductionmentioning

confidence: 99%

An inventory and topographic analysis of glaciers in the Torngat Mountains, northern Labrador, Canada

2014

View full text Add to dashboard Cite

ABSTRACT. This study presents the first complete glacier inventory of the Torngat Mountains, northern Labrador, Canada. In total, 195 glaciers and ice masses are identified, covering a total area of 24.5 � 1.8 km 2 . Mapped ice masses range in size from 0.01 to 1.26 km 2 , with a median size of 0.08 km 2 . Ice masses have a median elevation of 776 m a.s.l. and span an altitudinal range of 290-1500 m a.s.l. Indications of ice flow suggest at least 105 active glaciers in the Torngat Mountains. Analysis of morphometric and topographic parameters suggests that the regional distribution of ice masses is linked to physiographic setting while the preservation of coastal ice masses at low elevation is related to local meteorological conditions. In the most coastal environments, ice masses are shown to exist below the regional glaciation level due to topographic shadowing, coastal proximity and widespread debris cover. This study provides a baseline for future change assessment.

show abstract

Sustained rapid shrinkage of Yukon glaciers since the 1957–1958 International Geophysical Year

Cited by 30 publications

References 21 publications

Variability and change in the Canadian cryosphere

Variability and change in the Canadian cryosphere

Derivation and analysis of a complete modern-date glacier inventory for Alaska and northwest Canada

An inventory and topographic analysis of glaciers in the Torngat Mountains, northern Labrador, Canada

Contact Info

Product

Resources

About