EGU2020-9690
https://doi.org/10.5194/egusphere-egu2020-9690
EGU General Assembly 2020
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Understanding monsoon controls on the energy- and mass-balance of glaciers in High Mountain Asia

Stefan Fugger1,2, Evan Miles1, Michael McCarthy1, Catriona Fyffe3, Marin Kneib1,2, Simone Fatichi2,4, Wei Yang5, and Francesca Pellicciotti1,3
Stefan Fugger et al.
  • 1Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Birmensdorf, Switzerland
  • 2Institute of Environmental Engineering, ETH Zurich, Zurich, Switzerland
  • 3Department of Geography and Environmental Sciences, Northumbria University, Newcastle, UK
  • 4Department of Civil and Environmental Engineering, National University of Singapore, Singapore
  • 5Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences (CAS), Beijing, China

The Indian Summer Monsoon (ISM) shapes the melt and accumulation patterns of glaciers in large parts of High Mountain Asia (HMA) in complex ways due to the interaction of persistent cloud-cover, large temperature amplitudes, high atmospheric water content and high precipitation rates. While the ISM dominates in the southern and eastern regions, it progressively loses influence westward towards the Karakoram, where the influence of westerlies is predominant. Previous applications of energy- and mass-balance models for glaciers in HMA have been limited to single study sites (in Khumbu, Langtang and Parlung) and a few attempted to link model results to large-scale weather patterns. While these studies have helped to understand the energy- and mass-balance of glaciers in HMA under specific local climates, a regional perspective is still missing. In this study, we use a full energy- and mass-balance model together  with eight on-glacier AWS datasets around HMA to investigate how ISM conditions influence glacier-surface energy and mass balance. In particular, we look at how debris-covered and debris-free glaciers respond differently to the ISM, validating our results against independent in-situ measurements. This work is fundamental to the development of parameterizations of glacier melt for long-term hydrological studies and to the understanding of the present and future HMA cryosphere and water budget evolution.

How to cite: Fugger, S., Miles, E., McCarthy, M., Fyffe, C., Kneib, M., Fatichi, S., Yang, W., and Pellicciotti, F.: Understanding monsoon controls on the energy- and mass-balance of glaciers in High Mountain Asia, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-9690, https://doi.org/10.5194/egusphere-egu2020-9690, 2020.

This abstract will not be presented.