Patrick Wagnon
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View article: DCG-MIP: The Debris-Covered Glacier melt Model Intercomparison exPeriment
DCG-MIP: The Debris-Covered Glacier melt Model Intercomparison exPeriment Open
In a warming world of glacier changes, the scientific community has dedicated increasing attention to debris-covered glaciers and their response to climate. A variety of models with distinct complexity and data requirements have been devel…
View article: Brief communication: Accurate and autonomous snow water equivalent measurements using a cosmic ray sensor on a Himalayan glacier
Brief communication: Accurate and autonomous snow water equivalent measurements using a cosmic ray sensor on a Himalayan glacier Open
We analyze snow water equivalent (SWE) measurements from a cosmic ray sensor (CRS) on the lower accumulation area of Mera Glacier (central Himalaya, Nepal) between November 2019 and November 2021. The CRS aligned well with field observatio…
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: Brief Communication: Accurate and autonomous snow water equivalent measurements using a cosmic ray sensor on a Himalayan glacier
Brief Communication: Accurate and autonomous snow water equivalent measurements using a cosmic ray sensor on a Himalayan glacier Open
We analyze snow water equivalent (SWE) measurements from a cosmic ray sensor (CRS) on the lower accumulation area of Mera Glacier (Central Himalaya, Nepal) between November 2019 and November 2021. The CRS aligned well with field observatio…
View article: Mapping and characterization of avalanches on mountain glaciers with Sentinel-1 satellite imagery
Mapping and characterization of avalanches on mountain glaciers with Sentinel-1 satellite imagery Open
Avalanches are important contributors to the mass balance of glaciers located in mountain ranges with steep topographies. Avalanches result in localized over-accumulation that is seldom accounted for in glacier models due to the difficulty…
View article: Surface energy and mass balance of Mera Glacier (Nepal, Central Himalaya) and their sensitivity to temperature and precipitation
Surface energy and mass balance of Mera Glacier (Nepal, Central Himalaya) and their sensitivity to temperature and precipitation Open
The sensitivity of glacier mass balance to temperature and precipitation variations is crucial for informing models that simulate glaciers’ response to climate change. In this study, we simulate the glacier-wide mass balance of Mera Glacie…
View article: Reanalysis of the longest mass balance series in Himalaya using nonlinear model: Chhota Shigri Glacier (India)
Reanalysis of the longest mass balance series in Himalaya using nonlinear model: Chhota Shigri Glacier (India) Open
In-situ glacier‒wide mass balances (MB) from traditional glaciological method often carry systematic biases. The glacier‒wide MB series on Chhota Shigri Glacier has been reanalysed by combining the traditional MB reanalysis framework and a…
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
PMBsAcc. PMBs (east
View article: Surface energy and mass balance of Mera Glacier (Nepal, Central Himalaya) and their sensitivity to temperature and precipitation
Surface energy and mass balance of Mera Glacier (Nepal, Central Himalaya) and their sensitivity to temperature and precipitation Open
The sensitivity of glacier mass balance to temperature and precipitation variations is crucial for informing models that simulate glaciers’ response to climate change. In this study, we simulate the glacier-wide mass balance of Mera Glacie…
View article: COSIPY distributed simulations of Mera Glacier mass and energy balance (20161101-20201101)
COSIPY distributed simulations of Mera Glacier mass and energy balance (20161101-20201101) Open
The four netCDF files contain outputs from COSIPY model (Sauter et al., 2020) for Mera Glacier for the period 20161101 to 20201101. The model is run on a 0.003°*0.003° grid, and forced with meteological variables collected locally and dist…
View article: COSIPY distributed simulations of Mera Glacier mass and energy balance (20161101-20201101)
COSIPY distributed simulations of Mera Glacier mass and energy balance (20161101-20201101) Open
The four netCDF files contain outputs from COSIPY model (Sauter et al., 2020) for Mera Glacier for the period 20161101 to 20201101. The model is run on a 0.003°*0.003° grid, and forced with meteological variables collected locally and dist…
View article: Comment on egusphere-2023-2007
Comment on egusphere-2023-2007 Open
Abstract. Avalanches are important contributors to the mass balance of glaciers located in mountain ranges with steep topographies. They result in localised over-accumulation that is seldom accounted for in glacier models, due to the diffi…
View article: Mapping and characteristics of avalanches on mountain glaciers with Sentinel-1
Mapping and characteristics of avalanches on mountain glaciers with Sentinel-1 Open
Avalanches are important contributors to the mass balance of glaciers located in mountain ranges with steep topographies. They result in localised over-accumulation that is seldom accounted for in glacier models, due to the difficulty to q…
View article: Supplementary material to "Mapping and characteristics of avalanches on mountain glaciers with Sentinel-1"
Supplementary material to "Mapping and characteristics of avalanches on mountain glaciers with Sentinel-1" Open
Table S1: Sentinel-1 RGB scenes used for the manual outline comparison between the four independent operators, along with the Dice values relative to the manual outlines of the first operator, responsible for the delineation of all outline…
View article: Everest South Col Glacier did not thin during the period 1984–2017
Everest South Col Glacier did not thin during the period 1984–2017 Open
The South Col Glacier is a small body of ice and snow (approx. 0.2 km2) located at the very high elevation of 8000 m a.s.l. (above sea level) on the southern ridge of Mt. Everest. A recent study by Potocki et al. (2022) proposed that South…
View article: Glaciers and Glacier Lake Outburst Floods in the Himalaya
Glaciers and Glacier Lake Outburst Floods in the Himalaya Open
The glaciers in the Himalaya award the highest mountain range with their majestic visage. This chapter guides systematically from the ice-covered peaks and the glacial lakes along a catastrophic glacier lake outburst flood trajectory, thro…
View article: Energy and mass balance of Mera glacier (Everest region, Central Himalaya) and its sensitivity to climate
Energy and mass balance of Mera glacier (Everest region, Central Himalaya) and its sensitivity to climate Open
Recent glacier mass changes are very heterogeneous in High Mountain Asia, owing to climatic variability and the mass balance sensitivity to climate, which may differ from one region to another. Mera glacier in the Everest region is one of …
View article: Comment on tc-2022-166 -- response to Macguth and Mattea, w/ref to Steiner
Comment on tc-2022-166 -- response to Macguth and Mattea, w/ref to Steiner Open
Abstract. The South Col Glacier is an iconic small body of ice and snow (approx. 0.2 km2), located on the southern ridge of Mt. Everest. A recent study proposed that South Col Glacier is rapidly losing mass. This seems in contradiction wit…
View article: Glacial Melting over the South Col Glacier: Observations from S1-SAR
Glacial Melting over the South Col Glacier: Observations from S1-SAR Open
Abstract. The South Col Glacier is an iconic small body of ice and snow (approx. 0.2 km2), located on the southern ridge of Mt. Everest. A recent study proposed that South Col Glacier is rapidly losing mass. This seems in contradiction wit…
View article: Comment on tc-2022-166
Comment on tc-2022-166 Open
Abstract. The South Col Glacier is an iconic small body of ice and snow (approx. 0.2 km2), located on the southern ridge of Mt. Everest. A recent study proposed that South Col Glacier is rapidly losing mass. This seems in contradiction wit…
View article: Comment on tc-2022-166
Comment on tc-2022-166 Open
Abstract. The South Col Glacier is an iconic small body of ice and snow (approx. 0.2 km2), located on the southern ridge of Mt. Everest. A recent study proposed that South Col Glacier is rapidly losing mass. This seems in contradiction wit…
View article: Reply on RC1
Reply on RC1 Open
Abstract. The South Col Glacier is an iconic small body of ice and snow (approx. 0.2 km2), located on the southern ridge of Mt. Everest. A recent study proposed that South Col Glacier is rapidly losing mass. This seems in contradiction wit…
View article: Comment on tc-2022-166
Comment on tc-2022-166 Open
Abstract. The South Col Glacier is an iconic small body of ice and snow (approx. 0.2 km2), located on the southern ridge of Mt. Everest. A recent study proposed that South Col Glacier is rapidly losing mass. This seems in contradiction wit…
View article: An 11-year record of wintertime snow-surface energy balance and sublimation at 4863 m a.s.l. on the Chhota Shigri Glacier moraine (western Himalaya, India)
An 11-year record of wintertime snow-surface energy balance and sublimation at 4863 m a.s.l. on the Chhota Shigri Glacier moraine (western Himalaya, India) Open
Analysis of surface energy balance (SEB) at the glacier/snow surface is the most comprehensive way to explain the atmosphere–glacier/snow interactions, but that requires extensive data. In this study, we have analysed an 11-year (2009–2020…
View article: Brief communication: Everest South Col Glacier did not thin during the last three decades
Brief communication: Everest South Col Glacier did not thin during the last three decades Open
The South Col Glacier is an iconic small body of ice and snow (approx. 0.2 km2), located on the southern ridge of Mt. Everest. A recent study proposed that South Col Glacier is rapidly losing mass. This seems in contradiction with our comp…
View article: Modelling Debris-Covered Glacier Ablation Using the Simultaneous Heat and Water Transport Model. Part 1: Model Development and Application to North Changri Nup
Modelling Debris-Covered Glacier Ablation Using the Simultaneous Heat and Water Transport Model. Part 1: Model Development and Application to North Changri Nup Open
Modelling ablation of glacier ice under a layer of mineral debris is increasingly important, because the extent of supraglacial debris is expanding worldwide due to glacier recession. Physically based models have been developed, but the un…
View article: Evaluation of ERA5-Land and HARv2 Reanalysis Data at High Elevation in the Upper Dudh Koshi Basin (Everest Region, Nepal)
Evaluation of ERA5-Land and HARv2 Reanalysis Data at High Elevation in the Upper Dudh Koshi Basin (Everest Region, Nepal) Open
We present a multisite evaluation of meteorological variables in the Everest region (Nepal) from ERA5-Land and High Asian Refined Analysis, version 2 (HARv2), reanalyses in comparison with in situ observations, using classical statistical …