English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

. Albedo feedback is an important driver of glacier meltover bare-ice surfaces. Light-absorbing impurities strongly enhance glaciermelt rates but their abundance, composition and variations in space and timeare subject to considerable uncertainties and ongoing scientific debates. Inthis study, we assess the temporal evolution of shortwave broadband albedoderived from 15 end-of-summer Landsat scenes for the bare-ice areas of 39large glaciers in the western and southern Swiss Alps. Trends in bare-icealbedo crucially depend on the spatial scale considered. No significantnegative temporal trend in bare-ice albedo was found on a regional toglacier-wide scale. However, at higher spatial scales, certain areas ofbare ice, including the lowermost elevations and margins of the ablationzones,revealed significant darkening over the study period 1999 to 2016. A totalglacier area of 13.5 km 2 (equivalent to about 12 % of the averageend-of-summer bare-ice area in the study area) exhibited albedo trendssignificant at the 95 % confidence level or higher. Most of this area wasaffected by a negative albedo trend of about − 0.05 decade −1 . Generally,bare-ice albedo exhibits a strong interannual variability, caused by acomplex interplay of meteorological conditions prior to the acquisition ofthe data, local glacier characteristics and the date of the investigatedsatellite imagery. Although a darkening of glacier ice was found to bepresent over only a limited region, we emphasize that due to the recent andprojected growth of bare-ice areas and prolongation of the ablation season inthe region, the albedo feedback will considerably enhance the rate of glaciermass loss in the Swiss Alps in the near future.

Change detection of bare-ice albedo in the Swiss Alps