10 research outputs found
Exploration of a periodic GLOF in Halji, West Nepal using modeling and remote sensing
Abstract HKT-ISTP 2013
B
Evolution of Purogangri Ice Cap, central Tibetan Plateau, 2000-2012 - a comparison of two glaciological methods
Abstract HKT-ISTP 2013
B
Advances in the process-related understanding of atmosphere-cryosphere-hydrosphere couplings on the Tibetan Plateau
Abstract HKT-ISTP 2013
B
Evaluation of a distributed energy balance model for a high-altitude glacier on the Tibetan Plateau using glaciological measurements and a time-lapse camera system
Abstract HKT-ISTP 2013
B
The Influence of Key Climate Variables on Mass Balance of Naimona'nyi Glacier on a North‐Facing Slope in the Western Himalayas
Mechanisms and simulation of accelerated shrinkage of continental glaciers: A case study of Urumqi Glacier No. 1 in eastern Tianshan, Central Asia
Evaluation of a Coupled Snow and Energy Balance Model for Zhadang Glacier, Tibetan Plateau, Using Glaciological Measurements and Time-Lapse Photography
We present a new open-source, collaborative "COupled Snowpack and Ice surface energy and MAss balance model" (COSIMA) that is evaluated for Zhadang glacier, Tibetan Plateau. The model is calibrated, run, and validated based on in situ measurements and atmospheric model data from the High Asia Refined analysis (HAR) over the period April 2009 to June 2012. Results for the model runs forced by both in situ measurements and HAR agree well with observations of various atmospheric, glaciological, surface, and subsurface parameters on the glacier. A time-lapse camera system next to the glacier provides a 3-year image time series of the mean transient snow line altitude and the snow cover pattern, which is used for the spatial and temporal validation of the model. The model output corresponds very well to the observed temporal and spatial snow cover variability. The model is then run for a 10-year period of October 2001 to September 2011 forced with HAR data. In general, the radiation components dominate the overall energy turnover (65%), followed by the turbulent fluxes (31%). The generally dry atmosphere on the Tibetan Plateau causes sublimation to be responsible for 26% of the total mass loss. A proportion of 11% of the surface and subsurface melt refreezes within the snowpack.</p