Journal ArticleDOI
Rapid worldwide growth of glacial lakes since 1990
Dan H. Shugar,Dan H. Shugar,Aaron Burr,Umesh K. Haritashya,Jeffrey S. Kargel,C. Scott Watson,Maureen C. Kennedy,Alexandre R. Bevington,Richard Betts,Richard Betts,Stephan Harrison,Katherine Strattman,Katherine Strattman +12 more
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TLDR
In this paper, the role of these lakes as terrestrial storage for glacial meltwater is unknown and not accounted for in global sea level assessments, and they use scaling relations to estimate that global glacier lake volume increased by around 48%, to 156.5 km3, between 1990 and 2018.Abstract:
Glacial lakes are rapidly growing in response to climate change and glacier retreat. The role of these lakes as terrestrial storage for glacial meltwater is currently unknown and not accounted for in global sea level assessments. Here, we map glacier lakes around the world using 254,795 satellite images and use scaling relations to estimate that global glacier lake volume increased by around 48%, to 156.5 km3, between 1990 and 2018. This methodology provides a near-global database and analysis of glacial lake extent, volume and change. Over the study period, lake numbers and total area increased by 53 and 51%, respectively. Median lake size has increased 3%; however, the 95th percentile has increased by around 9%. Currently, glacial lakes hold about 0.43 mm of sea level equivalent. As glaciers continue to retreat and feed glacial lakes, the implications for glacial lake outburst floods and water resources are of considerable societal and ecological importance. Warming is increasing glacial lakes, and scaling relations show a 48% increase in volume for 1990 to 2018. All measures—area, volume, number—increased, providing water storage but also representing a potential hazard with the risk of outburst floods.read more
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An inventory of glacial lakes in the Third Pole region and their changes in response to global warming
TL;DR: In this paper, the first glacial lake in- ventories for the Third Pole were conducted for ~1990, 2000, and 2010 using Landsat TM/ETM+ data.
Journal ArticleDOI
The imbalance of the Asian water tower
Tandong Yao,Tobias Bolch,Deliang Chen,Jing Gao,Walter W. Immerzeel,Shilong Piao,Fengge Su,Lonnie G. Thompson,Yoshihide Wada,Liang Wang,Tao Wang,Guangjian Wu,Baiqing Xu,Wei Yang,Guoqing Zhang,Ping Zhao +15 more
Journal ArticleDOI
Increasing risk of glacial lake outburst floods from future Third Pole deglaciation
Guoxiong Zheng,Guoxiong Zheng,Simon K. Allen,Simon K. Allen,Anming Bao,Juan Antonio Ballesteros-Cánovas,Matthias Huss,Matthias Huss,Matthias Huss,Guoqing Zhang,Guoqing Zhang,Junli Li,Ye Yuan,Liangliang Jiang,Tao Yu,Wenfeng Chen,Markus Stoffel +16 more
TL;DR: In this paper, the authors provide a holistic assessment of past evolution, present state and modelled future change of glacial lakes and related glacial lake outburst flood (GLOF) risk across the Third Pole.
Journal ArticleDOI
Annual 30-meter Dataset for Glacial Lakes in High Mountain Asia from 2008 to 2017
Fang Chen,Meimei Zhang,Huadong Guo,Simon Allen,Simon Allen,Jeffrey S. Kargel,Umesh K. Haritashya,C. Scott Watson +7 more
TL;DR: In this article, the authors developed a HMA Glacial Lake Inventory (Hi-MAG) database to characterize the annual coverage of glacial lakes from 2008 to 2017 at 30'm resolution using Landsat satellite imagery.
Journal ArticleDOI
Glaciohydrology of the Himalaya-Karakoram.
Mohd Farooq Azam,Jeffrey S. Kargel,Joseph M. Shea,Santosh Nepal,Umesh K. Haritashya,Smriti Srivastava,Fabien Maussion,Nuzhat Qazi,Pierre Chevallier,A. P. Dimri,Anil V. Kulkarni,J. Graham Cogley,Ishmohan Bahuguna +12 more
TL;DR: This paper showed that glacier and snow melt are important components of Himalayan-Karakoram (HK) rivers, with greater hydrological importance for the Indus basin than for the Ganges and Brahmaputra basins.
References
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Google Earth Engine: Planetary-scale geospatial analysis for everyone
TL;DR: Google Earth Engine is a cloud-based platform for planetary-scale geospatial analysis that brings Google's massive computational capabilities to bear on a variety of high-impact societal issues including deforestation, drought, disaster, disease, food security, water management, climate monitoring and environmental protection.
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Journal ArticleDOI
Summary of Current Radiometric Calibration Coefficients for Landsat MSS, TM, ETM+, and EO-1 ALI Sensors
TL;DR: In this paper, a summary of the current equations and rescaling factors for converting calibrated Digital Numbers (DNs) to absolute units of at-sensor spectral radiance, Top-Of- Atmosphere (TOA) reflectance, and atsensor brightness temperature is provided.
Journal ArticleDOI
High-resolution mapping of global surface water and its long-term changes
TL;DR: Using three million Landsat satellite images, this globally consistent, validated data set shows that impacts of climate change and climate oscillations on surface water occurrence can be measured and that evidence can be gathered to show how surface water is altered by human activities.
Journal ArticleDOI
Processes and impacts of Arctic amplification: A research synthesis
Mark C. Serreze,Roger G. Barry +1 more
TL;DR: The past decade has seen substantial advances in understanding Arctic amplification, that trends and variability in surface air temperature tend to be larger in the Arctic region than for the Northern Hemisphere or globe as a whole as discussed by the authors.