Results 61 to 70 of about 2,111 (266)

Angle-of-arrival Fluctuation Characteristics of Gaussian Beams in Weak Oceanic Turbulence

Guangtongxin yanjiu, 2023
The Angle of Arrival (AOA) fluctuation caused by oceanic turbulence is the critical factor affecting the performance of underwater communication and imaging systems.
YI Xiang, BAN Kun, LIU Huan-huan, CHENG Ming-jian   +3 more
doaj  

An Introduction to Ocean Turbulence [PDF]

Eos, Transactions American Geophysical Union, 2008
In an address to the British Association for the Advancement of Science in 1932, Sir Horace Lamb commented, “I am an old man now, and when I die and go to heaven there are two matters on which I hope for enlightenment. One is quantum electrodynamics, and the other is the turbulent motion of fluids. And about the former I am rather optimistic.” Over the
openaire   +1 more source

Impact of small‐scale gravity waves on tracer transport

Quarterly Journal of the Royal Meteorological Society, EarlyView.
We extend a gravity wave (GW) parametrization to calculate the tracer transport due to the GW–Stokes drift and next‐order effects, where the approach is validated by comparing coarse‐resolution simulations with parametrized GWs to high‐resolution, wave‐resolving reference simulations.
Irmgard Knop, Stamen Dolaptchiev, Ulrich Achatz   +2 more
wiley   +1 more source

Thermodynamic and microphysical properties of summertime marine fog observed from Sable Island

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Atmospheric profiling and near‐surface fog and visibility measurements revealed synoptic‐scale forcing as the dominant factor in fog formation over Sable Island, with deep fog layers under low‐pressure systems and shallow fog layers under high‐pressure systems.
Kelsey Rowe, Jesus Ruiz‐Plancarte, Ryan Yamaguchi, David Ortiz‐Suslow, Eric Pardyjak, Ismail Gultepe, Harindra J. S. Fernando, Qing Wang   +7 more
wiley   +1 more source

Medicane characteristics from high‐resolution satellite radar observations

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This study uses high‐resolution observations from satellite synthetic aperture radar (SAR) to reveal that medicanes, cyclones with tropical features in the Mediterranean basin, have dynamical characteristics with attributes comparable with those of tropical cyclones of similar intensities, but smaller outer sizes and Rossby numbers.
Arthur Avenas, Mario Marcello Miglietta, Alexis Mouche, Stavros Dafis, Aurélien Colin, Romain Husson, Emmanouil Flaounas   +6 more
wiley   +1 more source

Transmittance of finite-energy frozen beams in oceanic turbulence

Results in Physics, 2019
Frozen waves have the good characteristic for resisting the diffraction and absorption in absorbing medium, which can solve the low transmittance of light waves in seawater.
Shibao Deng, Dongyu Yang, Yuan Zheng, Lifa Hu, Yixin Zhang   +4 more
doaj   +1 more source

Moisture inversions in the central Arctic: Product assessment and long‐wave radiative effect

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This study evaluates the integrated water vapour and the vertical distribution of water vapour of state‐of‐the‐art reanalyses, weather forecast models, and ground‐ and space‐based remote‐sensing products in the central Arctic. A particular focus lies on the representation of humidity inversions and the quantification of the long‐wave radiative effect ...
Andreas Walbröl, Susanne Crewell, Carola Barrientos‐Velasco, Giovanni Chellini, Hannes J. Griesche, Janna E. Rückert, Kerstin Ebell   +6 more
wiley   +1 more source

Bit Error Rate of Multi-Gaussian Correlated Asymmetric Bessel Beam Through Turbulent Ocean

Photonics
We investigate the underwater propagation of multi-Gaussian correlated asymmetric Bessel beam with partial coherence in the condition of quadrature amplitude modulation.
Zhecheng Zhang, Lin Yu, Yong Zhao, Xiaowan Peng   +3 more
doaj   +1 more source

Comparison of two numerical weather prediction models in simulating south foehn in the Alpine Rhine Valley

Quarterly Journal of the Royal Meteorological Society, EarlyView.
ICON outperforms COSMO in simulating a south foehn event in the Alpine Rhine Valley, with improved accuracy in temperature, wind speed, and foehn timing. This enhanced performance likely results from a more accurate representation of surface energy balance and gravity wave pattern on the lee side of the mountain.
Yue Tian, Julian Quimbayo Duarte, Shweta Singh, Juerg Schmidli   +3 more
wiley   +1 more source

Mode Propagation of Elliptical Perfect Optical Vortex in Turbulent Oceanic Channel

Photonics
As extensions of circular symmetric vortex beams, elliptical vortex beams with more diverse field forms are worthy of attention. In this paper, we investigate the mode propagation characteristics of an elliptical perfect optical vortex (EPOV) beam in ...
Xiaowan Peng, Lin Yu, Yong Zhao, Lifa Hu
doaj   +1 more source