Degree-day factors for snow and ice for Dokriani Glacier, Garhwal Himalayas

摘要

In the present study, degree-day factors for snow and ice were determined over Dokriani Glacier located in the Garhwal Himalayas. The field experiments were made at an altitude of about 4000 m. Effect of a thin fine dust layer on both degree-day factors was also examined. Average values of degree-day factor for clean and dusted snow were computed to be 5.7 and 6.4 mm degrees C-1 day(-1), respectively, whereas for clean ice and dusted ice the value of this factor was found 7.4 and 8.0 mm degrees C-1 day(-1). The degree-day factor for clean ice was about 30% higher than that for clean snow. The presence of dust increased the degree-day factor for snow by about 12%, whereas for ice this factor was increased by about 9%. These observations suggest that the effect of dust on degree-day factor for snow is more pronounced than that for ice. (C) 2000 Elsevier Science B.V. All rights reserved. [References: 31]