A scenario–neutral approach to climate change in glacier mass balance modeling DOI Creative Commons
Larissa van der Laan,

Kim Cholibois,

Ayscha El Menuawy

et al.

Annals of Glaciology, Journal Year: 2023, Volume and Issue: 64(92), P. 411 - 424

Published: Sept. 1, 2023

Abstract Scenario–neutral methods are commonly used to rapidly compare system responses changes in climate. Using glacier mass balance as a response, we present bottom-up, scenario–neutral method an effective tool for preliminary and overview studies on sensitivity complementary approach traditional top–down methods. The method's main characteristic is its visual result: two–dimensional response surfaces depicting balance. Their axes represent perturbations temperature precipitation relative baseline. simplicity of our makes it applicable all global glaciers. As proof–of–concept, the Open Global Glacier Model (OGGM) perform analysis four In addition, integration with demonstrated by overlaying from Coupled Intercomparison Project Phase 6 (CMIP6) models, under Shared Socioeconomic Pathways (SSP). Finally, benefits discussed decision–making science communication. Assessing results shows that overall, this can provide useful information research climate change impact mass, aiding study design

Language: Английский

Go or grow? Feedbacks between moving slopes and shifting plants in high mountain environments DOI Creative Commons
Jana Eichel, Markus Stoffel, Sonja Wipf

et al.

Progress in Physical Geography Earth and Environment, Journal Year: 2023, Volume and Issue: 47(6), P. 967 - 985

Published: Aug. 8, 2023

High mountains are climate change hotspots. Quickly rising temperatures trigger vegetation shifts such as upslope migration, possibly threatening mountain biodiversity. At the same time, slopes becoming increasingly unstable due to degrading permafrost and changing rain snowfall regimes, which favour slope movements rockfall debris flows. Slope can limit plant colonization, while, at colonization stabilize moving slopes. Thus, we here propose that response of high environments depends on a ‘biogeomorphic balance’ between movement intensity trait-dependent ability plants survive We envision three possible scenarios biogeomorphic balance: (1) Intensifying thus amplify instability. (2) Shifting ecosystem engineer species reduce facilitate for less movement-adapted species. (3) Trees tall shrubs shifting stable instability but decrease Previous geomorphic, ecological palaeoecological studies support all scenarios. Given differences in ecologic geomorphic rates change, well environmental heterogeneity elevational gradients environments, posit future balances will be variable heterogeneous time space. To further unravel balances, new research directions joint geomorphologists ecologists, using advancing field measurement, remote sensing modelling techniques. Recognizing ecosystems’ help better safeguard infrastructure, lives livelihoods millions people around world.

Language: Английский

Citations

6
Modern air, englacial and permafrost temperatures at high altitude on Mt Ortles (3905 m a.s.l.), in the eastern European Alps DOI Creative Commons
Luca Carturan, Fabrizio De Blasi,

Roberto Dinale

et al.

Earth system science data, Journal Year: 2023, Volume and Issue: 15(10), P. 4661 - 4688

Published: Oct. 20, 2023

Abstract. The climatic response of mountain permafrost and glaciers located in high-elevation areas has major implications for the stability slopes related geomorphological hazards, water storage supply, preservation palaeoclimatic archives. Despite a good knowledge physical processes that govern glaciers, there is lack observational datasets from summit areas. This represents crucial gap serious limit model-based projections future behaviour glaciers. A new dataset available area Mt Ortles, which highest South Tyrol, Italy. paper presents series air, englacial, soil surface rock wall temperatures collected between 2010 2016. Details are provided regarding instrument types characteristics, field methods, data quality control assessment. obtained through an open repository (https://doi.org/10.5281/zenodo.8330289, Carturan et al., 2023). In observed period, mean annual air temperature at 3830 m a.s.l. was −7.8 −8.6 ∘C. most shallow layers snow firn (down to depth about 10 m) froze during winter. However, melt percolation restored isothermal conditions ablation season, entire layer found melting pressure point. Glacier ice cold, but only 30 depth. Englacial decreases with depth, reaching minimum almost −3 ∘C close bedrock, 75 small glacier 3470 a.s.l., also cold down 9.5 m. ground negative all one monitored sites, indicating existence nearly debris-mantled summit. Similarly, except lowest 3030 suggests faces affected by exposures.

Language: Английский

Citations

3
Cryosphere degradation in a changing climate DOI
José M. Fernández‐Fernández, Marc Oliva, Adriano Ribolini

et al.

Land Degradation and Development, Journal Year: 2024, Volume and Issue: 35(15), P. 4359 - 4363

Published: July 25, 2024

Abstract Over the last few decades, instrumental climate record shows a progressive global warming. As one of most sensitive elements Earth's system, cryosphere is significantly affected by this trend. result, its various components are readjusting in situation disequilibrium with through series dynamics. These include thinning and retreat glaciers that may lead to formation new lakes; thawing ground ice, leading deformation terrain; reduction snow cover; occurrence mass movements threaten populations infrastructures. This Special Issue contains 23 scientific papers case studies explore above issues Arctic, Antarctic high mountain regions.

Language: Английский

Citations

0
Biophysical system perspectives on future change in African mountains DOI Creative Commons
Jasper Knight

Transactions of the Royal Society of South Africa, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 4

Published: May 24, 2024

Language: Английский

Citations

0
Enhancing the Climate Resilience of Semiarid River Systems and Their Catchments DOI
Jasper Knight, Kei Nakagawa, Mohamed A. M. Abd Elbasit

et al.

Environmental science and engineering, Journal Year: 2024, Volume and Issue: unknown, P. 193 - 205

Published: Jan. 1, 2024

Language: Английский

Citations

0
Freeze-thaw effects on daily sediment transport in an Alpine river DOI Open Access
Amalie Skålevåg, Axel Bronstert, Oliver Korup

et al.

Authorea (Authorea), Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 21, 2024

Ongoing climate change and cryospheric degradation are intensifying sediment transport in cold mountain regions, leading to elevated loads that adversely impact downstream areas. However, the influence of freeze-thaw processes on daily catchment-scale glaciated basins remains poorly understood. Here, we estimate effect suspended concentrations (SSC) Vent-Rofental basin, Austria. Using Bayesian change-point hierarchical regression, assess streamflow, frozen ground extent, diurnal cycles across three distinct states: thawing spring, thawed summer, freezing autumn. While streamflow is dominant driver transport, its modulated by temperature interactions. Frozen extent was found reduce SSC, attributed a reduction contributing area. A discernible shift dynamics observed as catchment transitions from thawed, marked when nearly all (97%) thawed. The summer state exhibited highest SSC due glacier melt, while spring enhanced amplifying snowmelt erosion. This study suggests glaciers retreat, snowmelt- freeze-thaw-driven erosion, addition erosive rainfall, will become increasingly influential determining fluxes.

Language: Английский

Citations

0
A scenario–neutral approach to climate change in glacier mass balance modeling DOI Creative Commons
Larissa van der Laan,

Kim Cholibois,

Ayscha El Menuawy

et al.

Annals of Glaciology, Journal Year: 2023, Volume and Issue: 64(92), P. 411 - 424

Published: Sept. 1, 2023

Abstract Scenario–neutral methods are commonly used to rapidly compare system responses changes in climate. Using glacier mass balance as a response, we present bottom-up, scenario–neutral method an effective tool for preliminary and overview studies on sensitivity complementary approach traditional top–down methods. The method's main characteristic is its visual result: two–dimensional response surfaces depicting balance. Their axes represent perturbations temperature precipitation relative baseline. simplicity of our makes it applicable all global glaciers. As proof–of–concept, the Open Global Glacier Model (OGGM) perform analysis four In addition, integration with demonstrated by overlaying from Coupled Intercomparison Project Phase 6 (CMIP6) models, under Shared Socioeconomic Pathways (SSP). Finally, benefits discussed decision–making science communication. Assessing results shows that overall, this can provide useful information research climate change impact mass, aiding study design

Language: Английский

Citations

0