Results 71 to 80 of about 1,274 (202)

A framework to evaluate and identify development requirements for land‐surface models at km‐scale resolution: Application to a semi‐arid and mountainous region

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This article provides a first evaluation of land‐surface models at the km‐scale resolutions at which they are used in weather and Earth‐system models. At these resolutions, the lateral transfers of water that organize landscapes play an important role in predicting evaporation correctly. Riparian processes and human water management for irrigation need
Jan Polcher, Julie Collignan, Juan Pablo Sierra Perez, Gabriele Arduini, Sophie Bastin, Martin Best, Aaron Boone, Manel Bravo, Francesca Covella, Jasper M. C. Denissen, Cenlin He, Simon Munier, Marc Prange, Elena Shevliakova   +13 more
wiley   +1 more source

Uncertainty Quantification and Global Sensitivity Analysis for Radio Wave Propagation in Evaporation Duct

Remote Sensing
Accurate prediction of radio wave propagation in evaporation ducts is critical for radar systems but faces significant environmental uncertainties. This study presents an uncertainty quantification and global sensitivity analysis framework comparing ...
Mingjian Li, Liguo Liu
doaj   +1 more source

Evaporation duct height measurements in the Mid-Atlantic: Final Report [PDF]

, 1978
This is a report on atmospheric boundary layer measurements made aboard the USNS Kane in February and March of 1978. The data has been analyzed to obtain Monin-Obukhov similarity parameters and EM propagation properties using bulk, profile and turbulence
Davidson, Kenneth L., Fairall, C.W., Houlihan, Thomas M., Schacher, G. E. (Gordon Everett)   +3 more
core  

RETRIEVING EVAPORATION DUCT HEIGHTS FROM POWER OF GROUND-BASED GPS OCCULTATION SIGNAL [PDF]

Progress In Electromagnetics Research M, 2013
Evaporation duct is a manifest phenomenon that can afiect microwave propagation seriously with low elevation angles near the sea surface. As an important parameter to describe the characteristic of the evaporation duct, duct height can be estimated from radar sea echo using a technique called as \refractivity from clutter". In this study, we proposed a
Hong-Guang Wang, Zhen-Sen Wu, Le-ke Lin, Shi-Feng Kang, Zhenwei Zhao   +4 more
openaire   +1 more source

Exploiting Device Deformability for Fluid and Particle Manipulation

Small, EarlyView.
Deformable devices enable fluid and particle manipulation modes that are inaccessible to rigid platforms. This review examines soft materials and architectures that translate controlled deformation into microscale fluid operations such as pumping, valving, mixing, and particle handling.
Zhiyang Hong, Xiaoyue Kang, Dan Yuan, Nam‐Trung Nguyen, Jun Zhang   +4 more
wiley   +1 more source

Development and Validation of a Next‐Generation Mechanistic Model of the Electric Arc Furnace

steel research international, EarlyView.
This study presents a next‐generation mechanistic model of the electric arc furnace (EAF). It describes equations for all crucial processes appearing during the steel‐recycling process in an EAF, i.e., thermal, mass, and chemical. The model was parameterized and validated using industrial EAF data.
Vito Logar, Igor Škrjanc
wiley   +1 more source

Using Vertically Separated MIMO in Ship-to-Ship Communications

IEEE Access, 2020
It is well established that the performance of communication systems is improved when deploying multiple antennas at one or both of the transmit/receive sides; and the amount of the gained improvement depends on the level of multipath richness of the ...
Ahmed Abdelmoaty, Ghassan Dahman, Amen Allah Bousselmi, Gwenael Poitau, Francois Gagnon   +4 more
doaj   +1 more source

Fecal Steroids as Tracers of Human Population and Waste Management Practices at the Ancient Maya City of Ucanal, Guatemala

Archaeometry, EarlyView.
ABSTRACT Geochemical data compiled from dried sediments from three water reservoirs at the ancient Maya city of Ucanal, Petén, Guatemala, reveal low to undetectable fecal biomarker concentrations. These low concentrations may be the result of the aerobic decay of sterols combined with well‐managed waste disposal practices.
Jean D. Tremblay, Peter M. J. Douglas, Christina T. Halperin, Yves Gélinas   +3 more
wiley   +1 more source

About relationship of evaporation duct height and microwave attenuation in over horizon

, 2010
Проведен анализ экспериментальных данных для выяснения взаимосвязи между высотой волновода испарения, определяемой по стандартным гидрометеорологическим измерениям, и ослаблением сантиметровых радиоволн в загоризонтной области.
Левадный, Ю.В., Шаляпин, В.Н., Иванов, В.К.   +2 more
core  

Evaporation duct occurrences in the northeast Atlantic during late summer [PDF]

, 1980
Analyses and interpretation of surface layer and synoptic-scale data obtained in the Northwest Atlantic were performed to obtain descriptions of the evaporation duct and associated atmospheric and oceanic synoptic features.
Callahan, Thomas Edwin
core