Brief communication: Non-linear sensitivity of glacier mass balance to climate attested by temperature-index models

IF 4.4 2区 地球科学 Q1 GEOGRAPHY, PHYSICAL
Cryosphere Pub Date : 2023-05-12 DOI:10.5194/tc-17-1989-2023
C. Vincent, E. Thibert
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引用次数: 3

Abstract

Abstract. Temperature-index models have been widely used for glacier-mass projections spanning the 21st century. The ability of temperature-index models to capture non-linear responses of glacier surface mass balance (SMB) to high deviations in air temperature and solid precipitation was recently discussed in the context of mass-balance simulations employing advanced machine-learning techniques. Here, we performed numerical experiments with a classic temperature-index model and confirmed that such models are capable of detecting non-linear responses of glacier SMB to temperature and precipitation changes. Non-linearities derive from the change in the degree-day factor over the ablation season and from the lengthening of the ablation season.
简要通讯:由温度指数模型证实的冰川物质平衡对气候的非线性敏感性
摘要温度指数模型已被广泛用于21世纪的冰川质量预测。最近,在使用先进的机器学习技术进行质量平衡模拟的背景下,讨论了温度指数模型捕捉冰川表面质量平衡(SMB)对气温和固体降水的高偏差的非线性响应的能力。在这里,我们使用辅助温度指数模型进行了数值实验,并证实该模型能够检测冰川SMB对温度和降水变化的非线性响应。非线性源于消融季节度数日因子的变化和消融季节的延长。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Cryosphere
Cryosphere GEOGRAPHY, PHYSICAL-GEOSCIENCES, MULTIDISCIPLINARY
CiteScore
8.70
自引率
17.30%
发文量
240
审稿时长
4-8 weeks
期刊介绍: The Cryosphere (TC) is a not-for-profit international scientific journal dedicated to the publication and discussion of research articles, short communications, and review papers on all aspects of frozen water and ground on Earth and on other planetary bodies. The main subject areas are the following: ice sheets and glaciers; planetary ice bodies; permafrost and seasonally frozen ground; seasonal snow cover; sea ice; river and lake ice; remote sensing, numerical modelling, in situ and laboratory studies of the above and including studies of the interaction of the cryosphere with the rest of the climate system.
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