Étienne Berthier
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View article: Monitoring recent (2018–2023) glacier and rock glacier changes in Central Patagonia using high-resolution Pléiades and ALOS PRISM satellite data
Monitoring recent (2018–2023) glacier and rock glacier changes in Central Patagonia using high-resolution Pléiades and ALOS PRISM satellite data Open
Glaciers and rock glaciers are essential components of the cryosphere in the Andes of Argentina and Chile, serving as significant freshwater reservoirs and playing a crucial hydrological role as the region experiences warming and drying tr…
View article: Annual mass change of the world's glaciers from 1976 to 2024 by temporal downscaling of satellite data with in situ observations
Annual mass change of the world's glaciers from 1976 to 2024 by temporal downscaling of satellite data with in situ observations Open
Glaciers, distinct from the Greenland and Antarctic ice sheets, play a crucial role in Earth's climate system by affecting global sea levels, regional freshwater availability, nutrient and energy budgets, and local geohazards. Past assessm…
View article: The 2024 Thame GLOF, Khumbu Nepal - causes, consequences, and dynamics
The 2024 Thame GLOF, Khumbu Nepal - causes, consequences, and dynamics Open
Glacial lake outburst floods (GLOFs) are recognized as a major hazard in many mountainous regions of the world, and particularly in the Himalaya. Much of the efforts around GLOF mitigation and early warning in the Himalaya focuses on lakes…
View article: MILLS: MItigation Leakage through Least Square -- A new method to estimate regional mass variations from GRACE/-FO
MILLS: MItigation Leakage through Least Square -- A new method to estimate regional mass variations from GRACE/-FO Open
Variations in water mass redistribution are a critical indicator of climate change, revealing processes such as global continental desertification and cryosphere melting. The Gravity Recovery and Climate Experiment (GRACE) and Follow-On (G…
View article: Mass losses of the Antarctic Peninsula. New constraints from stereoscopic imagery and laser altimetry.
Mass losses of the Antarctic Peninsula. New constraints from stereoscopic imagery and laser altimetry. Open
Along with glaciers, polar ice sheets are a major contributor to sea level rise and their losses are accelerating. Since 2012, intercomparison exercises have combined estimates of ice sheet mass change from various methods (gravimetry, alt…
View article: The Sikkim flood of October 2023: Drivers, causes, and impacts of a multihazard cascade
The Sikkim flood of October 2023: Drivers, causes, and impacts of a multihazard cascade Open
On 3 October 2023, a multihazard cascade in the Sikkim Himalaya, India, was triggered by 14.7 million cubic meters of frozen lateral moraine collapsing into South Lhonak Lake. The impact generated an ~20-meter tsunami-like impact wave, whi…
View article: Five decades of Abramov glacier dynamics reconstructed with multi-sensor optical remote sensing
Five decades of Abramov glacier dynamics reconstructed with multi-sensor optical remote sensing Open
Reference glacier sites with systematic in situ monitoring provide crucial information to understand trends in regional change. Throughout Central Asia, several sites have been established over the past 15 years, often restarting long-term…
View article: Multi-temporal elevation changes of Fedchenko Glacier, Tajikistan, from 1928 to 2021
Multi-temporal elevation changes of Fedchenko Glacier, Tajikistan, from 1928 to 2021 Open
The Fedchenko Glacier in central Pamir is one of Asia’s longest glaciers and has been a focal point for scientific investigation spanning the 20th and 21st centuries. This study explores a time series of elevation changes from 1928 to 2021…
View article: Reanalysis of the longest mass balance series in Himalaya using a nonlinear model: Chhota Shigri Glacier (India)
Reanalysis of the longest mass balance series in Himalaya using a nonlinear model: Chhota Shigri Glacier (India) Open
The glacier-wide mass balance (MB) series on Chhota Shigri Glacier has been reanalysed by combining the traditional MB reanalysis framework and a nonlinear MB model. The nonlinear model is preferred over the traditional glaciological metho…
View article: The Pléiades Glacier Observatory: high-resolution digital elevation models and ortho-imagery to monitor glacier change
The Pléiades Glacier Observatory: high-resolution digital elevation models and ortho-imagery to monitor glacier change Open
Spaceborne digital elevation models (DEMs) of glaciers are essential to describe their health and their contribution to river runoff and sea level rise. Publicly available DEMs derived from sub-meter satellite stereo imagery were, up to no…
View article: Annual mass changes for each glacier in the world from 1976 to 2023
Annual mass changes for each glacier in the world from 1976 to 2023 Open
Glaciers, distinct from the Greenland and Antarctic ice sheets, play a crucial role in Earth's climate system by affecting global sea levels, freshwater availability, nutrient and energy budgets and regional climate patterns. Accurate meas…
View article: Multi-temporal elevation changes of Fedchenko Glacier (Tajikistan) from 1928 to 2021
Multi-temporal elevation changes of Fedchenko Glacier (Tajikistan) from 1928 to 2021 Open
The Fedchenko Glacier in Tajikistan's central Pamir region is one of Asia's longest glacier and has been a focal point for scientific investigation spanning the 20th and 21st centuries, yielding a valuable historical dataset for Central As…
View article: Observing glacier elevation changes from spaceborne optical and radar sensors – an inter-comparison experiment using ASTER and TanDEM-X data
Observing glacier elevation changes from spaceborne optical and radar sensors – an inter-comparison experiment using ASTER and TanDEM-X data Open
Observations of glacier mass changes are key to understanding the response of glaciers to climate change and related impacts, such as regional runoff, ecosystem changes, and global sea level rise. Spaceborne optical and radar sensors make …
View article: Supplementary material to "Reanalysis of the longest mass balance series in Himalaya using nonlinear model: Chhota Shigri Glacier (India)"
Supplementary material to "Reanalysis of the longest mass balance series in Himalaya using nonlinear model: Chhota Shigri Glacier (India)" Open
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View article: New insights into the development of slowly rising jökulhlaups from the Grímsvötn subglacial lake, Iceland, deduced from ICEYE SAR images and in-situ observations
New insights into the development of slowly rising jökulhlaups from the Grímsvötn subglacial lake, Iceland, deduced from ICEYE SAR images and in-situ observations Open
We present a study on two jökulhlaups from the subglacial lake Grímsvötn, beneath Vatnajökull ice cap, SE-Iceland, giving new insights into the development of slowly rising jökulhlaups. In the first, spanning the p…
View article: Unleashing the archive of aerial photographs of Iceland, 1945-2000. Applications in geosciences 
Unleashing the archive of aerial photographs of Iceland, 1945-2000. Applications in geosciences  Open
The archive of historical aerial photographs of Iceland consists of ~140,000 vertical aerial photographs acquired between the years 1945 and 2000. It contains an invaluable amount of information about human and natural changes in the lands…
View article: The Pléiades Glacier Observatory: high resolution digital elevation models and ortho-imagery to monitor glacier change
The Pléiades Glacier Observatory: high resolution digital elevation models and ortho-imagery to monitor glacier change Open
Spaceborne digital elevation models (DEMs) of glaciers are essential to describe their health, and their contribution to river runoff and to sea level rise. Publicly available DEMs derived from submeter satellite stereo-imagery were, up to…
View article: Comment on egusphere-2023-2309
Comment on egusphere-2023-2309 Open
Abstract. Observations of glacier mass changes are key to understanding the response of glaciers to climate change and related impacts, such as regional runoff, ecosystem changes, and global sea-level rise. Spaceborne optical and radar sen…
View article: Elevation bias due to penetration of spaceborne radar signal on Grosser Aletschgletscher, Switzerland
Elevation bias due to penetration of spaceborne radar signal on Grosser Aletschgletscher, Switzerland Open
Digital elevation models (DEMs) from the spaceborne interferometric radar mission TanDEM-X hold a large potential for glacier change assessments. However, a bias is potentially introduced through the penetration of the X-band signal into s…
View article: Exceptional thinning through the entire altitudinal range of Mont-Blanc glaciers during the 2021/22 mass balance year
Exceptional thinning through the entire altitudinal range of Mont-Blanc glaciers during the 2021/22 mass balance year Open
Widespread glacier losses have been observed in most glaciated regions on Earth during recent decades, with a typical pattern of strong thinning in their lower reaches and limited elevation changes in their accumulation areas. Here, we use…
View article: Digital Elevation Models (DEMs) and lava outlines from the 2023 Litla-Hrútur eruption, Iceland, from Pléiades satellite stereoimages
Digital Elevation Models (DEMs) and lava outlines from the 2023 Litla-Hrútur eruption, Iceland, from Pléiades satellite stereoimages Open
Introduction: On the 10th of July 2023, at 16:40, an eruption started in the Reykjanes Peninsula, Iceland, next to the mountain "Litla-Hrútur". As part of the response, the CIEST2 french initiative was activated (Gouhier et al., 2022). Onc…
View article: Digital Elevation Models (DEMs) and lava outlines from the 2023 Litla-Hrútur eruption, Iceland, from Pléiades satellite stereoimages
Digital Elevation Models (DEMs) and lava outlines from the 2023 Litla-Hrútur eruption, Iceland, from Pléiades satellite stereoimages Open
Introduction: On the 10th of July 2023, at 16:40, an eruption started in the Reykjanes Peninsula, Iceland, next to the mountain "Litla-Hrútur". As part of the response, the CIEST2 french initiative was activated (Gouhier et al., 2022). Onc…
View article: Supplementary material to "Observing glacier elevation changes from spaceborne optical and radar sensors – an inter-comparison experiment using ASTER and TanDEM-X data"
Supplementary material to "Observing glacier elevation changes from spaceborne optical and radar sensors – an inter-comparison experiment using ASTER and TanDEM-X data" Open
The supplemental materials complement the manuscript by including Figures and Tables that describe the validation data and spaceborne results submitted by the groups.Figure S1-S5 show the airborne validation DEMs of the three study sites, …
View article: Observing glacier elevation changes from spaceborne optical and radar sensors – an inter-comparison experiment using ASTER and TanDEM-X data
Observing glacier elevation changes from spaceborne optical and radar sensors – an inter-comparison experiment using ASTER and TanDEM-X data Open
Observations of glacier mass changes are key to understanding the response of glaciers to climate change and related impacts, such as regional runoff, ecosystem changes, and global sea-level rise. Spaceborne optical and radar sensors make …
View article: Digital Elevation Models (DEMs) after the Shovi (Caucasus) debris flow, 13 August 2023
Digital Elevation Models (DEMs) after the Shovi (Caucasus) debris flow, 13 August 2023 Open
=========================== Introduction On 4 August 2023, a large debris flow struck the mountain resort town of Shovi in Georgia. More on this event here : https://eos.org/thelandslideblog/the-4-august-2023-debris-flow-at-shovi-in-georgi…
View article: Digital Elevation Models (DEMs) and lava outlines from the 2023 Litla-Hrútur eruption, Iceland, from Pléiades satellite stereoimages
Digital Elevation Models (DEMs) and lava outlines from the 2023 Litla-Hrútur eruption, Iceland, from Pléiades satellite stereoimages Open
Introduction: On the 10th of July 2023, at 16:40, an eruption started in the Reykjanes Peninsula, Iceland, next to the mountain "Litla-Hrútur". As part of the response, the CIEST2 french initiative was activated (Gouhier et al., 2022). Onc…