A new approach for evaluating regional permafrost changes: a case study in the Hoh Xil on the interior Qinghai‒Tibet Plateau

Advances in Climate Change Research, Journal Year: 2024, Volume and Issue: 15(6), P. 1040 - 1056

Published: Dec. 1, 2024

Language: Английский

---

Improved thermal conductivity parameterization of SHAW model in permafrost regions on the Qinghai-Tibet Plateau

Cold Regions Science and Technology, Journal Year: 2023, Volume and Issue: 218, P. 104057 - 104057

Published: Nov. 6, 2023

Language: Английский

---

Comment on egusphere-2023-3074

Published: Feb. 15, 2024

Abstract. Permafrost thawing as a result of climate change has major consequences locally and globally for the biosphere well human activities. The quantification its extent dynamics under different scenarios is needed to design local adaptation mitigation measures better understand permafrost feedbacks. To this end, numerical simulation can be used explore response soil thermo-hydric regimes changes in climatic conditions. Mechanistic approaches minimize modelling assumptions by relying on resolution continuum mechanics equations, but involve significant computational effort. In work, permaFoam solver along with high-performance computing resources assess impact four Coupled Model Intercomparison Project – Phase 6 (CMIP6) within pristine, forest-dominated watershed continuous zone. Using these century time-scale simulations, temperature, moisture, active layer thickness water fluxes are quantified, assuming no vegetation cover. most severe scenario (SSP5-8.5) suggests dramatic increase both annual evapotranspiration, maximum values reached 2100 +46 % +29 respectively. For thickness, current conditions it would correspond 560 km southward shift. Moreover, thermal equilibrium near-surface new not 2100, suggesting further even case halting change.

Language: Английский

---

Future permafrost degradation under climate change in a headwater catchment of Central Siberia: quantitative assessment with a mechanistic modelling approach

Published: Feb. 8, 2024

Abstract. Permafrost thawing as a result of climate change has major consequences locally and globally for the biosphere well human activities. The quantification its extent dynamics under different scenarios is needed to design local adaptation mitigation measures better understand permafrost feedbacks. To this end, numerical simulation can be used explore response soil thermo-hydric regimes changes in climatic conditions. Mechanistic approaches minimize modelling assumptions by relying on resolution continuum mechanics equations, but involve significant computational effort. In work, permaFoam solver along with high-performance computing resources assess impact four Coupled Model Intercomparison Project – Phase 6 (CMIP6) within pristine, forest-dominated watershed continuous zone. Using these century time-scale simulations, temperature, moisture, active layer thickness water fluxes are quantified, assuming no vegetation cover. most severe scenario (SSP5-8.5) suggests dramatic increase both annual evapotranspiration, maximum values reached 2100 +46 % +29 respectively. For thickness, current conditions it would correspond 560 km southward shift. Moreover, thermal equilibrium near-surface new not 2100, suggesting further even case halting change.

Language: Английский

---

Reply on RC1

Published: March 20, 2024

Abstract. Permafrost thawing as a result of climate change has major consequences locally and globally for the biosphere well human activities. The quantification its extent dynamics under different scenarios is needed to design local adaptation mitigation measures better understand permafrost feedbacks. To this end, numerical simulation can be used explore response soil thermo-hydric regimes changes in climatic conditions. Mechanistic approaches minimize modelling assumptions by relying on resolution continuum mechanics equations, but involve significant computational effort. In work, permaFoam solver along with high-performance computing resources assess impact four Coupled Model Intercomparison Project – Phase 6 (CMIP6) within pristine, forest-dominated watershed continuous zone. Using these century time-scale simulations, temperature, moisture, active layer thickness water fluxes are quantified, assuming no vegetation cover. most severe scenario (SSP5-8.5) suggests dramatic increase both annual evapotranspiration, maximum values reached 2100 +46 % +29 respectively. For thickness, current conditions it would correspond 560 km southward shift. Moreover, thermal equilibrium near-surface new not 2100, suggesting further even case halting change.

Language: Английский

---