A simple energy-balance model to calculate ice ablation at the margin of the Greenland ice sheet

R. J. Braithwaite, O. B. Olesen

Research output: Contribution to journalArticlepeer-review

Abstract

Data for daily ice ablation on two outlets from the Greenland ice sheet, Nordbogletscher (1978-83) and Qamanarssup sermia (1980-86), are used to test a simple energy-balance model which calculates ablation from climate data. The mean errors of the model are only -1.1 and -1.3 mm water d-1 for Nordbogletscher (14 months) and Qamanarssup sermia (21 months), respectively. The larger error for Qamanarssup sermia may be due to variations in ice albedo but the model also underestimates ablation during Fohn events. According to the model, radiation accounts for about two-thirds of mean ablation for June-August at the two sites, while turbulent fluxes account for about one-third. -from Authors
Original languageEnglish
Pages (from-to)222-228
Number of pages6
JournalJournal of Glaciology
Volume36
Issue number123
Publication statusPublished - 1990

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