Year: 2025
Type: article
Abstract: Understanding of Southern Hemisphere glacier response to climatic changes is limited by a paucity of direct observations. However, glacier Equilibrium Line Altitudes (ELAs), which are determined by air temperature and precipitation and represent glacier mass balance, can be approximated using remote sensing of end of summer snowline altitudes (SLA EOS ). This study shows that SLA EOS increased on the majority of 6364 glaciers and by up to 7.18 m yr −1 between 2000 and 2023 across five Southern Hemisphere mountain regions. Over this period anomalies from the multi-decadal mean SLA EOS became predominantly positive for all regions. In the most extreme cases, the rate of SLA EOS rise accelerated by up to x 4.0 in the western Southern Alps of New Zealand when comparing pre- and post-2010 rates of change. Contrastingly, the western Antarctic Peninsula and the western Southern Andes experienced declining SLA EOS and slowing rates of change at -1.0 and − 8.1 m yr −1 , respectively. These spatio-temporal patterns reveal the interplay of temperature and precipitation, and the effects of them on a wide variety of mountain glaciers and ice cap outlet glaciers, with implications for understanding glacier response times, committed ice losses and overall meltwater production in the coming decades.
Source: Scientific Reports
Institution: University of Leeds
Language: English
Subfield: Atmospheric Science
Field: Earth and Planetary Sciences
Domain: Physical Sciences
SDG: Climate action
Open Access status: gold
Estimated APC paid: $2,690
OpenAlex ID: W4415106436