Results 71 to 80 of about 2,111 (266)

Covariance of the intertropical discontinuity and African easterly jet in Sahelian wet and dry years

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Intertropical discontinuity and African easterly jet (AEJ) positions are strongly correlated, with a more pronounced linear relationship across wet years. Surface heat flux anomalies modify low‐level temperature and sensible heat flux gradients that shift the AEJ core south of the gradient maxima in both composites.
Marian Amoakowaah Osei, Cornelia Klein, Christopher M. Taylor, Douglas J. Parker, Michael Baidu   +4 more
wiley   +1 more source

Sound scattering from oceanic turbulence

Geophysical Research Letters, 2003
The first near coincident measurements of acoustic backscatter and temperature/velocity microstructure confirm theoretical predictions that oceanic turbulence scatters sound. Not only are acoustic backscatter at 307 kHz and turbulent microstructure unambiguously correlated on a patch‐by‐patch basis, but measured scattering amplitudes agree with ...
Tetjana Ross, Rolf Lueck
openaire   +1 more source

Assessing the role of urban blue space in summer outdoor thermal regulation in northwestern Europe: A hectometric Weather Research and Forecasting modelling on idealized urban landscape

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Using hectometric Weather Research and Forecasting simulations, we examine how urban blue spaces mitigate extreme summer heat in northwestern European cities through neighbourhood‐scale cooling mechanisms. Results show horizontal advection dominates cooling by mixing cooler air from waterbodies with warmer urban air, providing ∼50W·m−2$$ \sim 50\kern0 ...
Xuan Chen, Srinidhi Gadde, Arjan Droste, Gert‐Jan Steeneveld, Miriam Coenders‐Gerrits, Remko Uijlenhoet   +5 more
wiley   +1 more source

Performance Evaluation of Modulating Retro-Reflector Underwater Wireless Optical Communication Links in Oceanic Turbulence

IEEE Photonics Journal
Although Modulating retro-reflector (MRR) technology offers a promising low-power solution for underwater wireless optical communication (UWOC), its performance under challenging oceanic turbulence has not been comprehensively analyzed.
Ying Du, Jingyuan Wang, Zhiyong Xu, Jianhua Li   +3 more
doaj   +1 more source

Performance evaluation of regional weather predictions with the Model for Prediction Across Scales – Atmosphere (MPAS‐A) over the Maritime Continent

Quarterly Journal of the Royal Meteorological Society, EarlyView.
As part of the ongoing efforts to develop next‐generation forecasting systems at the Meteorological Service Singapore, this study presents the setup and evaluation of the SINGV_NG(MPAS) system. Overall, the SINGV_NG(MPAS) system outperforms European Centre for Medium‐Range Weather Forecasts (ECMWF) deterministic forecasts in capturing heavy rainfall ...
I‐Han Chen, Pratiman Patel, Kalli Furtado, Wei Wang, Zhiquan Liu, Dale Barker, Jimy Dudhia, Hugh Zhang   +7 more
wiley   +1 more source

Sensitivity of flower trade‐wind cloud organisation to mesoscale atmospheric heterogeneities

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Trade‐wind cloud organisation is insensitive to dynamical and thermal heterogeneities but very sensitive to humidity mesoscale heterogeneities, especially in the cloud layer, where they form moist patches, and not in the sub‐cloud layer. Clouds and rain develop in moist patches, then cold pools develop progressively, initiating mesoscale circulations ...
Thibaut Dauhut, Fleur Couvreux, Dominique Bouniol   +2 more
wiley   +1 more source

Research on the Backscattering Prediction Mechanism for Underwater Turbulent Channels

Applied Sciences
In the field of underwater laser detection, turbulence causes beam wandering and intensity scintillation, which subsequently alter the angle of incidence and ultimately degrade the quality of the target echo signal.
Yongjie Li, Jingjing Luo, Siguang Zong, Mengxue Lin, Shaopeng Yang   +4 more
doaj   +1 more source

Microphysical chemistry of fog–aerosol interactions over the northwest Atlantic Ocean during Fatima 2022

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Fifteen size‐resolved aerosol samples collected during marine fog, with adjacent ambient observations, show that coarse sea salt aerosol is rapidly grown and lost in the northwest North Atlantic Ocean except when subject to extreme winds. The persistence of fog in the absence of sea salt is determined by available fine‐mode aerosol, where greater ...
Leyla Salehpoor, Leigh R. Crilley, Gianina Giacosa, Lauren Robinson, Rachel Y. W. Chang, David G. Ortiz‐Suslow, Ryan Yamaguchi, Qing Wang, Ed Creegan, Harindra J. S. Fernando, Trevor C. VandenBoer   +10 more
wiley   +1 more source

Microphysics and interactions of aerosols and fog on the northwest Atlantic Ocean

Quarterly Journal of the Royal Meteorological Society, EarlyView.
In the Grand Banks, aerosol size distributions were bimodal, aerosol and fog droplet concentrations were low, and fogs were shorter (<12 hours). In contrast, near Sable Island, aerosol size distributions had a single broad mode that was likely influenced by continental emissions, corresponding with higher aerosol and droplet concentrations as well as ...
Gianina Giacosa, Lauren Robinson, David G. Ortiz‐Suslow, Ryan Yamaguchi, Edward Creegan, Phillipe Gauvin‐Bourdon, Leyla Salehpoor, Leigh R. Crilley, Trevor C. VandenBoer, Qing Wang, Harindra J. S. Fernando, Rachel Y.‐W. Chang   +11 more
wiley   +1 more source

Enabling Under Ice Glider Operations: A Backseat Driver Approach

Journal of Field Robotics, EarlyView.
ABSTRACT Polar Oceans are key locations for forcing global ocean circulation, influencing both global climate and biogeochemical cycles. Due to restricted access to these seasonally and perennially ice‐covered regions, these areas are severely undersampled.
Yaomei Wang, Benjamin Allsup, Georgios Salavasidis, Stephen Woodward, Adeniyi Adenaya, Mike Smart, Alexis Johnson, Felipe Marques Dos Santos, Jake Ludgate, Daniel Matterson, Alvaro Lorenzo, J. Alexander Brearley, Alexander Brian Phillips   +12 more
wiley   +1 more source