Results 61 to 70 of about 213,098 (343)

Hierarchical Artificial Muscle with Nonlinear Elasticity for Antagonistic and Cyclic Robotics

Advanced Science, EarlyView.
We construct hierarchical muscles by plying nylon fibers around a heating wire. The hierarchical muscle shows a J‐shaped passive curve, which shows benefit in antagonistic muscle pair and work accumulation mechanism. We also develop a computational, first‐principle model to understand the physics of both active actuation stroke and passive J‐curve ...
Samuel Tsai, Liuyang Cheng, Ali Albazroun, Qiong Wang, Jeongmin Kim, Arman Tekinalp, Soonwook Kim, Charlie Simcox, Ryne Downing, Vagish Sivaramakrishnan, Grace Carsello, Miles Bimrose, Wonsik Eom, William P. King, Mattia Gazzola, Sameh Tawfick   +15 more
wiley   +1 more source

The Vertical Momentum Budget of Shallow Cumulus Convection: Insights From a Lagrangian Perspective

Journal of Advances in Modeling Earth Systems, 2019
A Lagrangian Particle Dispersion Model is embedded into large eddy simulations to diagnose the responses of shallow cumulus convection to a small‐amplitude large‐scale temperature perturbation.
Yang Tian, Zhiming Kuang, Martin S. Singh, Ji Nie   +3 more
doaj   +1 more source

Sensitivity of a Mediterranean Tropical-Like Cyclone to Physical Parameterizations

Atmosphere, 2018
The accurate prediction of Mediterranean tropical-like cyclones, or medicanes, is an important challenge for numerical weather prediction models due to their significant adverse impact on the environment, life, and property.
Ioannis Pytharoulis, Stergios Kartsios, Ioannis Tegoulias, Haralambos Feidas, Mario Marcello Miglietta, Ioannis Matsangouras, Theodore Karacostas   +6 more
doaj   +1 more source

A comparison of cumulus parameterization techniques

Tellus, 1973
An improved quasi-Lagrangian primitive equation model is used to investigate existing cumulus parameterization schemes. Comparative forty-eight hour forecasts were made utilizing seven different cumulus heating functions, one being zero cumulus latent heat release. Initial data were that of a nondeveloping easterly wave in the Carribbean.
openaire   +2 more sources

Errors caused by draft fraction in cumulus parameterization [PDF]

Geophysical Research Letters, 2009
The assumption that the draft fraction is negligible in cumulus parameterization can be a major source of error in the parameterized tendencies of thermodynamic quantities. This study estimates the errors arising from this assumption based on an analysis of high‐resolution cloud‐resolving model output.
openaire   +1 more source

Numerical simulation of clouds and precipitation depending on different relationships between aerosol and cloud droplet spectral dispersion [PDF]

, 2013
The aerosol effects on clouds and precipitation in deep convective cloud systems are investigated using the Weather Research and Forecast (WRF) model with the Morrison two-moment bulk microphysics scheme.
Li, Xinzhou, Liu, Xiaodong, Peng, Yiran, Wang, Yi, Xie, Xiaoning, Yue, Zhiguo   +5 more
core   +2 more sources

Random Time‐Space Coding Metasurfaces for Spatial Control of the Temporal Statistics of Electromagnetic Fields

Advanced Science, EarlyView.
A probabilistic framework based on random time‐space coding metasurfaces enables control of the spatial distribution of electromagnetic fields temporal statistics. By tailoring the marginal and joint distributions of random codes, electromagnetic fields with desired mean and variance patterns are realized, enabling simultaneous transmission and jamming.
Jia Cheng Li, Jiang Han Bao, Che Liu, Tie Jun Cui   +3 more
wiley   +1 more source

Effects of the Representation of Convection on the Modelling of Hurricane Tomas (2010)

Advances in Meteorology, 2017
The cumulus parameterization is widely recognised as a crucial factor in tropical meteorology: this paper intends to shed further light on the effects of convection parameterization on tropical cyclones’ numerical predictions in the “grey zone” (10–1 km ...
Irene Marras, Elisabetta Fiori, Lauro Rossi, Antonio Parodi   +3 more
doaj   +1 more source

Study of NWP parameterizations on extreme precipitation events over Basque Country [PDF]

Advances in Science and Research, 2016
The Weather Research and Forecasting model (WRF), like other numerical models, can make use of several parameterization schemes. The purpose of this study is to determine how available cumulus parameterization (CP) and microphysics (MP) schemes in the ...
I. R. Gelpi, S. Gaztelumendi, S. Carreño, R. Hernández, J. Egaña   +4 more
doaj   +1 more source

Thin liquid water clouds: their importance and our challenge [PDF]

, 2007
Many clouds important to the Earth’s energy balance contain small amounts of liquid water, yet despite many improvements, large differences in retrievals of their liquid water amount and particle size still must be ...
Austin, R., Barnard, J., Cady-Pereira, K., Chiu, J. Christine, Clough, S., Flynn, C., Johnson, K., Khaiyer, M., Liljegren, J., Lin, B., Long, C., Marshak, A., Matrosov, S., McFarlane, S., Miller, M., Min, Q., Minnis, P., O'Hirok, W., Turner, Dawn, Vogelmann, A., Wang, Z., Wiscombe, W.   +21 more
core   +1 more source