0f046409-3a86-48d0-8a08-661c93528dac eng Ev-K2-CNR +39 035 3230511 +39 035 3230551 Via San Bernardino 145 Bergamo BG 24126 Italy metadata@evk2cnr.org http://www.evk2cnr.org/ 2014-06-29T17:05:07 ISO 19115:2003/19139 1.0 Spatial distribution of debris thickness and melting from remote-sensing and meteorological data, at debris-covered Baltoro glacier, Karakoram, Pakistan by C. MIHALCEA,1 C. MAYER,2 G. DIOLAIUTI,1 C. D’AGATA,1 C. SMIRAGLIA,1 A. LAMBRECHT,3 E. VUILLERMOZ,4 G. TARTARI4- 1Department of Earth Sciences ‘Ardito Desio’, University of Milan, Via Mangiagalli 34, I-20133 Milan, Italy; 2Commission for Glaciology, Bavarian Academy of Sciences, Alfons-Goppel-Strasse 11, D-80539 Munich, Germany; 3Institute for Meteorology and Geophysics, University of Innsbruck, Innrain 52, A-6020 Innsbruck, Austria; 4CNR–IRSA, Water Research Institute/National Research Council, Localita` Occhiate, I-20047 Brugherio, Milan, Italy 2008-10-19T23:00:00 Annals of Glaciology 48 A distributed surface energy-balance study was performed to determine sub debris ablation across a large part of Baltoro glacier, a wide debris-covered glacier in the Karakoram range, Pakistan. The study area is ca 124km2. The study aimed primarily at analyzing the influence of debris thickness on the melt distribution. The spatial distribution of the physical and thermal characteristics of the debris was calculated from remote-sensing (ASTER image) and field data. Meteorological data from an automatic weather station at Urdukas (4022ma.s.l.), located adjacent to Baltoro glacier on a lateral moraine, were used to calculate the spatial distribution of energy available for melting during the period 1–15 July 2004. The model performance was evaluated by comparisons with field measurements for the same period. The model is reliable in predicting ablation over wide debris covered areas. It underestimates melt rates over highly crevassed areas and water ponds with a high variability of the debris thickness distribution in the vicinity, and over areas with very low debris thickness (<0.03 m). We also examined the spatial distribution of the energy-balance components (global radiation and surface temperature) over the study area. The results allow us to quantify, for the study period, a meltwater production of 0.058km3. Claudia Mihalcea Università degli Studi di Milano Dept. Earth Sciences "A. Desio" Italy claudia.mihalcea@unimi.it Christoph Mayer Bavarian Academy of Sciences and Humanities BAWD Munich Christoph.Mayer@lrz.badw-muenchen.de Guglielmina Diolaiuti Università degli Studi di Milano Italy guglielmina.diolaiuti@unimi.it http://www.igsoc.org/annals/ https://geoportal.mountaingenius.org/geonetwork/srv/eng/resources.get?uuid=0f046409-3a86-48d0-8a08-661c93528dac&fname=mountain_witness__s.png thumbnail png debris covered glaciers, Karakorum, ice ablation SHARE eng climatologyMeteorologyAtmosphere -180 180 -90 90 http://www.igsoc.org/annals/ WWW:LINK-1.0-http--link Glacier ablation