Results 61 to 70 of about 265,793 (302)

Parameterization of the snow density in the top snow layer.

open access: yesJournal of the Japanese Society of Snow and Ice, 1988
積雪表層数cmの密度の時間変化を, 粘性圧縮理論に基づいてパラメータ化した.圧縮粘性係数は, 積雪密度と平均気温の関数として表した.計算結果によれば, 積雪密度は最終降雪後, 時間と共に増加し, 高温時の方が低温時よりも増加速度が大きい.密度の計算値と実測値は±0.05g・cm-3の精度で一致した.
Junsei KONDO, Yoichi NUMATA
openaire   +2 more sources

Data‐Driven Bulldozer Blade Control for Autonomous Terrain Leveling

open access: yesAdvanced Robotics Research, EarlyView.
A simulation‐driven framework for autonomous bulldozer leveling is presented, combining high‐fidelity terramechanics simulation with a neural‐network‐based reduced‐order model. Gradient‐based optimization enables efficient, low‐level blade control that balances leveling quality and operation time.
Harry Zhang   +5 more
wiley   +1 more source

Particle Filter Data Assimilation of Monthly Snow Depth Observations Improves Estimation of Snow Density and SWE

open access: yesWater Resources Research, 2019
Snow depth observations and modeled snow density can be combined to calculate snow water equivalent (SWE). In this approach, SWE uncertainty is dominated by snow density uncertainty, which depends on meteorological data quality and process representation
Eric J. Smyth   +2 more
doaj   +1 more source

Snow accumulation, surface height change, and firn densification at Summit, Greenland: Insights from 2 years of in situ observation [PDF]

open access: yes, 2004
Weekly measurements of surface height change were made at an accumulation forest of 100 stakes at Summit, Greenland, over a 2-year period (17 August 2000 to 8 August 2002).
Dibb, Jack E., Fahnestock, Mark
core   +2 more sources

Transparent Photothermal Slippery Surface Based on Monolayer Self‐Assembled MXene Film for Anti‐Fogging and De‐Icing

open access: yesAdvanced Science, EarlyView.
The ultrathin (2.5 nm) MXene film self‐assembled at liquid interfaces breaks the trade‐off between transparency (82.5 %) and photothermal conversion effect (DT∼25.1°C ± 2.9 °C) under 100 mW cm−2. After encapsulated by a slippery surface with low adhesion, this transparent film can be applied in smart windows, eyewear, and optical sensors to autonomous ...
Xiao Han   +6 more
wiley   +1 more source

Ensemble mean density and its connection to other microphysical properties of falling snow as observed in Southern Finland [PDF]

open access: yesAtmospheric Measurement Techniques, 2016
In this study measurements collected during winters 2013/2014 and 2014/2015 at the University of Helsinki measurement station in Hyytiälä are used to investigate connections between ensemble mean snow density, particle fall velocity and parameters of the
J. Tiira   +6 more
doaj   +1 more source

A simple model for predicting snow albedo decay using observations from the Community Collaborative Rain, Hail, and Snow-Albedo (CoCoRAHS-Albedo) Network [PDF]

open access: yes, 2017
The albedo of seasonal snow cover plays an important role in the global climate system due to its influence on Earth’s radiation budget and energy balance.
Amaral, Tristan O   +4 more
core   +2 more sources

Standard and non-standard primordial neutrinos [PDF]

open access: yes, 2006
The standard cosmological model predicts the existence of a cosmic neutrino background with a present density of about 110 cm^{-3} per flavour, which affects big-bang nucleosynthesis, cosmic microwave background anisotropies, and the evolution of large ...
Hannestad S   +4 more
core   +4 more sources

Study on Natural Gas Decarbonization Process Based on CO2 Desublimation Characteristics

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Natural gas decarbonization is a crucial processing step. In this study, the snow separation technology for removal of carbon dioxide in natural gas based on CO2 desublimation characteristics was introduced. The phase equilibrium calculation of CH4‐CO2 and N2‐CO2 system was carried out by using cubic equations of states (EOSs), and identified ...
Haiqin Wang   +3 more
wiley   +1 more source

Georeferenced Snow Depth and Snow Water Equivalent Dataset (2025) from East Kazakhstan Region

open access: yesData
In this work, we present the Snow Depth and Snow Water Equivalent Dataset for specific areas located in the East Kazakhstan Region that can be exploited to monitor and understand water resource dynamics in mountain regions. The present dataset represents
Dmitry Chernykh   +9 more
doaj   +1 more source

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