نتایج جستجو برای: refreezing

تعداد نتایج: 178  

Journal: :Journal of Glaciology 2021

Abstract To get a better overview of atmosphere-driven mass changes at the 79N Glacier (Nioghalvfjerdsfjorden Glacier), largest outlet glacier northeast Greenland ice stream, surface balance (SMB) is modeled by linking COupled Snowpack and Ice energy mass-balance model in PYthon (COSIPY) with output regional atmospheric (Polar WRF) for years 2014–2018. After manual optimization, produces reliab...

Journal: :Journal Of Geophysical Research: Atmospheres 2021

In the future, intensity, phases, and frequency of precipitation are expected to change due global warming, in particular during colder seasons when temperatures near 0°C. To investigate impacts warmer atmospheric conditions on microphysical processes that lead several types, extreme 1998 Ice Storm was simulated using Weather Research Forecasting (WRF) model, with without a pseudo-global warmin...

Journal: :Journal of Glaciology 2021

Abstract Projected climate warming and wettening will have a major impact on the state of glaciers seasonal snow in High Arctic regions. Following up historical simulation (1957–2018) for Svalbard, we make future projections glacier climatic mass balance (CMB), conditions land, runoff, under Representative Concentration Pathways (RCP) 4.5 8.5 emission scenarios 2019–60. We find that average CMB...

Journal: :Annals of Glaciology 2023

Abstract As warming intensifies across the Greenland ice sheet, an increasing number of shallow coring and radar studies are targeting melt-impacted firn column to investigate meltwater processes. Highly inhomogeneous infiltration refreezing, however, redistributes mass, distorting age–depth relationships confounding comparisons between different cores. Here, we utilize a dynamic time warping a...

Journal: :Ocean Modelling 2021

Melt ponds are pools of meltwater forming principally on Arctic sea ice during the melt season. The albedo is a key component surface energy balance. For this reason, various pond schemes have been developed for climate models. These require assumptions physical processes governing as well knowledge atmospheric state, which not perfectly known. In study, we investigate effects sources uncertain...

Journal: :Tadris: Jurnal Keguruan dan Ilmu Tarbiyah 2022

This study aims to understand prophetic leadership in realizing effective learning from the perspective of Kurt Lewin at pondok pesantren. uses a phenomenological approach, where researcher tries meaning behind phenomenon through in-depth interviews, observation, and documentation. The data sources this research were obtained information submitted by informants, results observations documents, ...

Journal: :Frontiers in Earth Science 2023

Glacier melt provides an important source of freshwater, particularly during dry years and late in the summer, after most seasonal snow has melted. Glaciers are losing mass world’s mountain regions, which leads to uncertainties around availability freshwater downstream catchments. While contributions glacial meltwater rivers can be quantified through hydrograph separation methods, changes chemi...

Journal: :The Cryosphere 2021

Abstract. Radiative transfer in snow and ice is often not modeled explicitly regional climate models. In this study, we evaluate a new englacial radiative scheme assess the surface mass energy budget for Greenland sheet latest version of model RACMO2, 2.3p3. We also (sub)surface temperature melt, as radiation penetration now enables internal heating. The results are compared to previous evaluat...

Journal: :Elementa 2022

The magnitude, spectral composition, and variability of the Arctic sea ice surface albedo are key to understanding numerically simulating Earth’s shortwave energy budget. Spectral broadband albedos were spatially temporally sampled by on-ice observers along individual survey lines throughout sunlit season (April–September, 2020) during Multidisciplinary drifting Observatory for Study Climate (M...

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