Results 81 to 90 of about 8,639 (236)
Semidiurnal Internal Tide North and South of the Critical Latitude in the Kara Sea
Journal of Marine Science and EngineeringTemperature measurements data are analyzed from two moorings in the Kara Sea, north of the critical latitude for semidiurnal internal tides (74°30′ N) at a point at 74°54.3′ N, 69°43.6′ E, and south of the critical latitude at a point at 71°14.2′ N, 65 ...
Eugene Morozov +5 more
doaj +1 more source
Observations and numerical simulations of a valley‐exit wind in the Alpine Bolzano basin
Quarterly Journal of the Royal Meteorological Society, EarlyView.The evolution and spreading of the nocturnal valley‐exit wind flowing from the Isarco Valley into the Bolzano basin, in the Italian Alps, are found to be influenced by the basin temperature stratification. Measurements and high‐resolution simulations show that a cold‐air pool favors an upward trajectory of the flow at the exit of the valley.
Federica Gucci +4 more
wiley +1 more source
Computational analysis of air orifice to enhance air twist formation in twisting nozzles
Mechanical Engineering JournalAn air twisting nozzle was investigated by modifying the horizontal connection angle (α) and vertical connection angle (β) of the air orifice relative to the yarn channel, using computational fluid dynamics. Here, α represents the horizontal (rotational)
Makhsuda JURAEVA, Jang Min PARK
doaj +1 more source
Quarterly Journal of the Royal Meteorological Society, EarlyView.This study reveals that the combined effects of the North Atlantic Oscillation (NAO) and anomalous Indo‐Pacific Walker circulation on the excitation of the wave train along the wintertime subtropical jet strongly depend on their phase combination. Their impacts interfere constructively or destructively over South Asia, leading to notable differences in
Yuki Asazuma +2 more
wiley +1 more source
New views of some invariants associated with the Cartesian 2D velocity gradient tensor
Quarterly Journal of the Royal Meteorological Society, EarlyView.Vorticity and divergence of horizontal flow are fundamental quantities in meteorology; both are linear functions of the four elements of the 2D velocity gradient tensor and both are formally unchanged under coordinate rotation. We explore four quadratic functions of the elements that are geometrically invariant in this sense, finding some novel ...
I. Roulstone, S. A. Clough, A. A. White
wiley +1 more source
Aerodynamic Design and Experimental Investigation of the Sailplane Wing Tip Devices
Acta Polytechnica, 2003 This paper describes an experimental set-up for the investigation of wing tip devices developed as part of a study into the velocity and vorticity distributions in the flow field behind winglets, using hot-wire anemometry.
P. Anderle, L. Smrček, F. N. Coton
doaj
Dynamics and thermodynamics of the fast and slow Madden–Julian Oscillation
Quarterly Journal of the Royal Meteorological Society, EarlyView.The results of this study highlight the MJO as a complex phenomenon, the behavior of which is driven by an interplay of thermodynamic and dynamic processes. The MJO's distinct speeds are controlled by different mechanisms: slow MJOs propagate eastward primarily via horizontal moisture advection, fast MJOs by vertical moisture advection.
Víctor C. Mayta +3 more
wiley +1 more source
Point vortices on the sphere: a case with opposite vorticities [PDF]
Nonlinearity, 2001 35 pages, 9 ...
openaire +3 more sources
A retrospective on the 2025 Atlantic hurricane season
Weather, EarlyView.The 2025 Atlantic hurricane season was intermittent, with extended quiet periods separated by three clusters of activity. The broad‐scale conditions were often unfavourable for cyclogenesis and common drivers of activity such as La Niña were weak, but well above‐average sea temperatures still supported intense storms.
Charles W. Powell
wiley +1 more source
Vorticity and the birth of optical vortices
, 2019 We exploit the vorticity, familiar from fluid mechanics and the theory of superfluids, as a tool to track the birth and subsequent development of optical vortices at a spiral phase plate.
Potoček, Václav +2 more
openaire +2 more sources