Results 61 to 70 of about 347,919 (347)

Key Challenges for Commercializing Perovskite–Silicon Tandem Solar Cells

open access: yesCarbon Energy, EarlyView.
This review discusses the scientific and technological challenges in advancing perovskite–silicon tandem solar cells (PSTSCs) from lab‐scale to commercial viability, focusing on long‐term stability, scalability, and economic feasibility. Key issues include intrinsic and extrinsic degradation factors, installation conditions, environmental impacts, and ...
Bilal Mehmood   +16 more
wiley   +1 more source

Using CloudSat‐CPR Retrievals to Estimate Snow Accumulation in the Canadian Arctic

open access: yesEarth and Space Science, 2020
Snow is a critical contributor to our global water and energy budget, with profound impacts for water resource availability and flooding in cold regions. The vast size and remote nature of the Arctic present serious logistical and financial challenges to
Fraser King, Christopher G. Fletcher
doaj   +1 more source

Multiscale assimilation of Advanced Microwave Scanning Radiometer-EOS snow water equivalent and Moderate Resolution Imaging Spectroradiometer snow cover fraction observations in northern Colorado [PDF]

open access: yes, 2012
Eight years (2002–2010) of Advanced Microwave Scanning Radiometer–EOS (AMSR-E) snow water equivalent (SWE) retrievals and Moderate Resolution Imaging Spectroradiometer (MODIS) snow cover fraction (SCF) observations are assimilated separately or jointly ...
Arsenault, Kristi R   +6 more
core   +2 more sources

Improving Snow Water Equivalent Maps With Machine Learning of Snow Survey and Lidar Measurements

open access: yesWater Resources Research, 2019
In the semiarid interior western USA, where a majority of surface water supply comes from mountain forests, high‐resolution aerial lidar‐based surveys are commonly used to study snow.
P. Broxton, W. V. Leeuwen, J. Biederman
semanticscholar   +1 more source

Permeability of granite from a shallow buried mountain pipe gallery tunnel under unloading confining pressure

open access: yesDeep Underground Science and Engineering, EarlyView.
Triaxial compression tests under unloading confining pressure conditions were conducted to systematically analyze the permeability behavior of granite retrieved from the different classification surrounding rocks. Abstract The rock mass within mountain tunnels undergoes complex changes in permeability, strength, and deformation during tunneling ...
Xiaoyan Zhang   +4 more
wiley   +1 more source

VARIABILITY OF WINTER RUNOFF OF THE OKA RIVER AND ITS RELATIONSHIP WITH CLIMATE CHANGE

open access: yesЛëд и снег, 2018
Response of a river flow in a winter low-water period to the climate changes is analyzed by the example of theOkaRiver(245 thousand km2). The analysis was done for each individual month from December to March during the period 1980–2015.
T. B. Titkova
doaj   +1 more source

Using CloudSat‐Derived Snow Accumulation Estimates to Constrain Gridded Snow Water Equivalent Products

open access: yesEarth and Space Science, 2021
Changes in the quantity of terrestrial Arctic snow have far‐reaching implications for the global water‐energy budget, ecosystem development, and cold region flooding.
Fraser King, Christopher G. Fletcher
doaj   +1 more source

Vegetation on the move: elevational shifts and greening dynamics across the Himalayan alpine zone

open access: yesEcography, EarlyView.
This study investigates alpine ‘vegetation line' (the upper limit of continuous plant community) dynamics in the Himalayan alpine zone (HAZ) over a 24‐year timescale (1999–2022) using maximum NDVI products derived from Landsat series datasets, adjusted for sampling bias using phenological modelling.
Ruolin Leng   +5 more
wiley   +1 more source

Tri-Frequency Synthetic Aperture Radar for the Measurements of Snow Water Equivalent [PDF]

open access: yes
SWESARR (Snow Water Equivalent Synthetic Aperture Radar and Radiometer) is an airborne instrument developed at the NASA Goddard Space Flight Center for the retrieval of Snow Water Equivalent. SWESARR was specifically designed to measure co-located active
Bonds, Quenton   +7 more
core   +4 more sources

Dynamic-stochastic modeling of snow cover formation on the European territory of Russia

open access: yesЛëд и снег, 2015
A dynamic-stochastic model, which combines a deterministic model of snow cover formation with a stochastic weather generator, has been developed. The deterministic snow model describes temporal change of the snow depth, content of ice and liquid water ...
A. N. Gelfan, V. M. Moreido
doaj   +1 more source

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