Results 31 to 40 of about 3,876 (302)

A statistical approach to surface renewal: The virtual chamber concept

Agrosystems, Geosciences & Environment, 2021
In the stable conditions prevailing at night, concentrations of emitted gases (e.g., radon [Rn], carbon dioxide [CO2], methane [CH4], ammonia [NH3], and nitrous oxide [N2O]) build up at the surface, with intermittent interruptions due to the passage of ...
Bruce B. Hicks, Nebila Lichiheb, Deb. L. O'Dell, Joel N. Oetting, Neal S. Eash, Mark Heuer, LaToya Myles   +6 more
doaj   +1 more source

The particle dry deposition component of total deposition from air quality models: right, wrong or uncertain?

Tellus: Series B, Chemical and Physical Meteorology, 2019
Dry deposition is an important loss process for atmospheric particles and can be a significant part of total deposition estimates calculated for critical loads analyses. However, algorithms used in large-scale air quality and atmospheric chemistry models
Rick D. Saylor, Barry D. Baker, Pius Lee, Daniel Tong, Li Pan, Bruce B. Hicks   +5 more
doaj   +1 more source

Impact of oceanic turbulence on coherent laser communications

, 2022
Paper 110140J, 9 S.We investigate how oceanic turbulence impacts symbol-error-probability of free-space optical communication systems operating underwater and based on phase-shift keying heterodyne coherent receivers.
Gladysz, Szymon, Toselli, Italo
core   +1 more source

Turbulence-resistant self-focusing vortex beams

, 2022
We consider recently introduced self-focusing fields that carry orbital angular momentum (OAM) [Opt. Lett. $\textbf{46}$, 2384$-$2387 (2021)] and in particular, their propagation properties through a turbulent ocean.
Chaoliang Ding (5125319), Marco Ornigotti (3960899), Meilan Luo (14357301), Matias Koivurova (9174410)   +3 more
core   +1 more source

Channel Capacity of the OAM-Based Free-Space Optical Communication Links With Bessel–Gauss Beams in Turbulent Ocean

IEEE Photonics Journal, 2016
An orbital angular momentum (OAM)-mode transmission model of Bessel–Gauss (BG) beams is established to derive an analytic expression of the channel information capacity of an OAM-based free-space optical (FSO) communication system with non ...
Mingjian Cheng, Lixin Guo, Jiangting Li, Yixin Zhang   +3 more
doaj   +1 more source

Unified Modeling of Irradiance Scintillation for Laser Beams in Arbitrary Oceanic Turbulence

Photonics
Accurate modeling of irradiance scintillation is important for evaluating underwater wireless optical communication (UWOC) systems operating in oceanic turbulence.
Bingyan Fu, Wanqi Zhang, Taiming Hu, Guangqing Liu, Yuxuan Li, Xiang Yi   +5 more
doaj   +1 more source

Probability distribution of the orbital angular momentum mode of the ultrashort Laguerre-Gaussian pulsed beam propagation in oceanic turbulence

Results in Physics, 2018
By introducing the orbital angular momentum (OAM) eigenfunctions of the pulsed beam and two-frequency mutual coherence function in oceanic turbulence, we establish the received probability distribution of OAM modes of the ultrashort Laguerre-Gaussian ...
Ye Li, Yi-xin Zhang, Yun Zhu
doaj   +1 more source

The shape of vortices in quasi-geostrophic turbulence

, 2003
Partially supported by the UK EPSRC (Grant GR/N11711)The present work discusses the most commonly occurring shape of the coherent vortical structures in rapidly rotating stably stratified turbulence, under the quasi-geostrophic approximation. In decaying
Reinaud, Jean Noel, Koudella, CR, Dritschel, David Gerard   +2 more
core   +1 more source

LV. On turbulence in the ocean [PDF]

The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science, 1920
n ...
openaire   +2 more sources

Propagation properties of a controllable rotating elliptical Gaussian optical coherence lattice in oceanic turbulence

Results in Physics, 2019
We propose a theoretical model for a rotating elliptical Gaussian optical coherence lattice (REGOCL) in oceanic turbulence. It is found that every sub-beam in the REGOCL maintains a controllable rotation within a certain distance, which plays a ...
Feng Ye, Jintao Xie, Shihan Hong, Jianbin Zhang, Dongmei Deng   +4 more
doaj   +1 more source