Saharo-Arabian deserts includes large expanses of sand dunes called ergs. These dunes are formed and constantly reshaped by prevailing winds. In this paper, we use backscatter (σo) measurements observed at various azimuth angles from SeaWinds scatterometer (QSCAT) and ERS scatterometer (ESCAT) to determine the σo azimuthal modulation over the sand dunes. A second order harmonic equation is used...

The potentially fatal Irukandji syndrome is relatively common in tropical waters throughout the world. It is caused by the sting of the Irukandji jellyfish, a family of box jellyfish that are almost impossible to detect in the water owing to their small size and transparency. Using collated medical records of stings and local weather conditions, we show that the presence of Irukandji blooms in ...

16. Abstract In a previous research project [SPR 2418; "Study of the performance of acoustic barriers for Indiana toll roads,"] the influence of environmental factors and of advanced sound barrier concepts was investigated. The presence of temperature gradients over pavements was found to have a strong influence on sound propagation. Refraction of sound waves emitted by tire-road interactions i...

Saharo-Arabian deserts includes large expanses of sand dunes called ergs. These dunes are formed and constantly reshaped by prevailing winds. Previous study shows that Saharan ergs exhibit significant backscatter (σ) azimuth angle (φ) modulation. The phases of the modeled σ versus φ harmonics over the ergs are correlated to the orientation of the dune fields. Most of the vertical variation in e...

Doppler wind lidar measurements were used for the first time in Romania to analyse and turbulence statistics a peri-urban site located at Măgurele, southwest of Bucharest. Vertical scanning between December 2019 November 2021 processed using an existing toolbox. The over two-year period performed on seasonal diurnal cycle bases. analyses showed horizontal speed, with lower values during daytime...

Coastal circulations are basic information when considering sediment transport and water quality in the oceanic environment, particularly macro-vortices dynamics which greatly affected mass transfer extended residence time (Hasegawa et al., 2009). Large-scale could be formed lee or around natural obstacles such as islands headlands during interaction between geographical features coastal induce...

.......Talk to the management at leading technology firms in the same market, and the similarities in opinions are striking. Most hold roughly the same set of opinions, beliefs, and ideas about how specific actions lead to successful business outcomes. For lack of a better phrase, I call this the ‘‘prevailing view.’’ The prevailing view is an important aspect of every market. It can persist for...

abstract many people know the important effects of caspian sea winds and storms on the economy of three provinces of iran including gilan, mazandaran, and golestan that they form one exclusive and extent area which have moderate and humid climate. this paper used a synoptic climatologically approach, which combine a number of atmospheric factors. using daily and monthly winds data including the...