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Glacier shrinkage across High Mountain Asia

Published online by Cambridge University Press:  03 March 2016

J. Graham Cogley
J. Graham Cogley*
Affiliation:
Department of Geography, Trent University, Peterborough, ON, Canada
*
Correspondence: J. Graham Cogley <gcogley@trentu.ca>
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Abstract

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An assessment of glacier shrinkage (reduction of area) for all of High Mountain Asia requires a complete compilation of measured rates of change and also a methodology for objective comparison of rates. I present a compilation from 155 publications reporting glacier area changes, and also a methodology that overcomes the main obstacles hindering comparison. Glacier areas are not always assigned uncertainties, and this problem is addressed with an error model derived from published estimates. The problem of discordant survey dates is addressed by interpolating measured areas to fixed dates at pentadal intervals. Interpolation error depends only incoherently on the time span between measurements, but strongly on glacier size: smaller glaciers, in addition to changing more rapidly on average, exhibit more variable rates of change. The overlapping boundaries of study regions are reconciled by mapping all of the information to a 0.5° geographical grid. When coupled with glacier area information from the Randolph Glacier Inventory, the widely observed inverse dependence of shrinkage rates on glacier size shows promise as a tool for treating incomplete spatial coverage. Over High Mountain Asia as a whole from 1960 to 2010, the unweighted average shrinkage rate is –0.57% a–1, but corrections for variable glacier size raise the average to –0.34% a–1, and filling unmeasured gridcells with rates based on size dependence alters the latter estimate to –0.40% a–1. The uncertainties in these rates are large. The Karakoram anomaly is found to be a zonal feature extending well to the east of the Karakoram proper.

Keywords

glacier coverglacier fluctuationsglacier mapping
Type
Paper
Information
Annals of Glaciology , Volume 57 , Issue 71 , March 2016 , pp. 41 - 49
Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright
Copyright © The Author(s) 2016

References

Arendt, AA and 77 others (2014) Randolph Glacier Inventory: a dataset of global glacier outlines: version 4.0. (GLIMS Technical Report) National Snow and Ice Data Center, Boulder, CO. Digital mediaGoogle Scholar
Basnett, S, Kulkarni, AV and Bolch, T (2013) The influence of debris cover and glacial lakes on the recession of glaciers in Sikkim Himalaya, India. J. Glaciol., 59(218), 1035–1046 (doi: 10.31 89/2013/JoG12JoG12J184)CrossRefGoogle Scholar
Bhambri, R, Bolch, T, Chaujar, RK and Kulshreshtha, SC (2011) Glacier changes in the Garhwal Himalaya, India, from 1968 to 2006 based on remote sensing. J. Glaciol., 57(203), 543–556 (doi: 10.31 89/002214311 796905604)CrossRefGoogle Scholar
Dyurgerov, MB (2010) Reanalysis of glacier changes: from the IGY to the IPY, 1960-2008. Mater. Glyatsiol Issled., 110, 1–116 Google Scholar
Hastings, DA and Dunbar, PK eds (1999) Global Land One-kilometer Base Elevation (GLOBE). (Key to Geophysical Records Documentation No. 34) Digital Elevation Model, Version 1.0. National Geophysical Data Center, National Oceanic and Atmospheric Administration, Boulder, CO Google Scholar
Hewitt, K (2005) The Karakoram anomaly? Glacier expansion and the ‘elevation effect’. Mt. Res. Dev., 25(4), 332–340 (doi: 10.1659/0276-4741 (2005)025 [0332:TKAGEA]2.0.CO;2)CrossRefGoogle Scholar
Janes, TJ and Bush, ABG (2012) The role of atmospheric dynamics and climate change on the possible fate of glaciers in the Karakoram. J. Climate, 25(23), 8308–8327 (doi: 10.11 75/JCLI-D-11-00436.1)CrossRefGoogle Scholar
Kääb, A, Nuth, C, Treichler, D and Berthier, E (2015) Contending estimates of early 21st century glacier mass balance over the Pamir-Karakoram-Himalaya. Cryosphere, 9, 557–564 (doi: 10.5194/tc-9-557-2015)CrossRefGoogle Scholar
Konovalov, V and Desinov, L (2007) Remote sensing monitoring of the long-term regime of the Pamirs glaciers. IAHS Publ. 316 (Symposium at Perugia 2007 - Vulnerability of Societies to Water Related Risks), 149–156 Google Scholar
Konovalov, VG and Shchetinnicov, AS (1994) Evolution of glaciation in the Pamiro-Alai mountains and its effect on river run-off. J. Glaciol., 40(134), 149–157 CrossRefGoogle Scholar
Li, KM, Li, ZQ, Gao, WY and Wang, L (2011) Recent glacial retreat and its effect on water resources in eastern Xinjiang. Chinese Sci. Bull., 56(33), 3596–3604 (doi: 10.1007/s11434-011-4720-8)CrossRefGoogle Scholar
Liu, SY and 6 others (2006) Glacier retreat as a result of climate warming and increased precipitation in the Tarim river basin, northwest China. Ann. Glaciol., 43, 91–96 CrossRefGoogle Scholar
Pfeffer, WT and 75 others (2014) The Randolph Glacier Inventory: a globally complete inventory of glaciers. J. Glaciol., 60(221), 537–552 (doi: 10.3189/2014JoG13J1 76)CrossRefGoogle Scholar
Racoviteanu, A, Arnaud, Y, Williams, M and Manley, WF (2015) Spatial patterns in glacier area and elevation changes from 1 962 to 2006 in the monsoon-influenced eastern Himalaya. Cryosphere, 9, 505–523 (doi: 10.51 94/tc-9-505-201 5)CrossRefGoogle Scholar
Scherler, D, Bookhagen, B and Strecker, MR (2011) Spatially variable response of Himalayan glaciers to climate change affected by debris cover. Nature Geosci., 4(3), 156–159 (doi: 10.1038/ngeo1 068)CrossRefGoogle Scholar
Wang, L, Li, ZQ, Wang, FT and Edwards, R (2014) Glacier shrinkage in the Ebinur lake basin, Tien Shan, China, during the past 40 years. J. Glaciol., 60(220), 245–254 (doi: 10.3189/2014JoG13J023)CrossRefGoogle Scholar
Wang, PY, Li, ZQ and Gao, WY (2011) Rapid shrinking of glaciers in the middle Qilian Mountain region of northwest China during the last ~50 years, J. Earth Sci., 22(4), 539–548 (doi: 10.1007/s12583-011-01 95-4)CrossRefGoogle Scholar
Wei, JF and 6 others (2014) Surface-area changes of glaciers in the Tibetan Plateau interior area since the 1 970s using recent Landsat images and historical maps. Ann. Glaciol., 55(66), 213–222 (doi: 10.31 89/2014AoG66A038)Google Scholar
Zemp, M and 10 others (2014) Introduction: Global glacier monitoring - a long-term task integrating in situ observations and remote sensing. In Kargel, JS, Leonard, GJ, Bishop, MP, Kääb, A and Raup, BH eds Global Land Ice Measurements from Space. Springer Praxis, Berlin, 1–21 (doi: 10.1007/978-3-540-79818-7)Google Scholar