Results 51 to 60 of about 10,485 (275)
Atmospheric and Oceanic Science Letters, 2020 Taking an extratropical cyclone that produced extreme precipitation as the research object, this paper calculates the contribution of condensation latent heat release (LHR) to relative vorticity tendency based on the complete-form vertical vorticity ...
Yang SHEN, Yan SUN, Duanyang LIU
doaj +1 more source
Classification of hemispheric monthly mean stratospheric potential vorticity fields [PDF]
Annales Geophysicae, 2003 Monthly mean NCEP reanalysis potential vorticity fields at the 650 K isentropic level over the Northern and Southern Hemispheres between 1979 and 1997 were studied using multivariate analysis tools.
R. Huth, P. O. Canziani, P. O. Canziani
doaj +1 more source
Atmosphere, 2023 The socioeconomic impacts caused by floods in the south of Eastern Siberia (SES), and the expected increase in precipitation extremes over northern Eurasia, have revealed the need to search for atmospheric circulation patterns that cause extreme ...
Olga Antokhina +4 more
doaj +1 more source
Mixing‐Driven Defects and Composition Evolution in Multi‐Material Metal Additive Manufacturing
Advanced Science, EarlyView.Operando synchrotron X‐ray imaging coupled with high‐fidelity multiphysics modeling uncovers how inter‐material mixing reshapes keyhole dynamics and drives distinct pore‐formation pathways in multi‐material laser powder bed fusion (LPBF). Composition‐dependent instabilities trigger defects, whereas rescanning suppresses porosity and homogenizes Cu ...
Zhilang Zhang +5 more
wiley +1 more source
An Explanation of the Poleward Mass Flux in the Stratosphere
AtmosphereThis paper offers a new perspective on the explanation of the poleward mass flux in the stratosphere. This mass flux represents the upper leg of the so-called Brewer–Dobson circulation. This new perspective is based on the following hypothesis.
Aarnout J. van Delden
doaj +1 more source
Potential vorticity: A short history of its definitions and uses
Meteorologische Zeitschrift, 1997 There has, in recent years, been something of a renaissance in the use of potential vorticity to interpret atmospheric dynamics. This owes a lot to the review paper of Hoskins, McIntyre and Robertson (1985).
Alan J. Thorpe, Hans Volkert
doaj +1 more source
Seasonal variability of the potential vorticity in the Lofoten vortex
Russian Journal of Earth Sciences, 2022 The anticyclonic quasi-permanent Lofoten vortex is a strong dynamic formation in the center of the Lofoten Basin in the Norwegian Sea. We used the oceanic reanalysis data GLORYS12V1.
Novoselova Elena
doaj +1 more source
Cteno‐Bot: An Untethered Metachronally Swimming Robot With Magnetoactive Propulsors
Advanced Intelligent Systems, EarlyView.We present Cteno‐bot, an untethered ctenophore‐inspired robot which swims using metachronally coordinated appendages. A single mechanism controls up to 216 magnetoactive propulsors via a dynamically varying magnetic field. We show that the swimming speed of the robot can be increased without a corresponding increase in power requirement, simply by ...
David J. Peterman, Margaret L. Byron
wiley +1 more source
Predictability and dynamics of potential vorticity streamers and connections to high impact weather [PDF]
, 2012 Narrow potential vorticity (PV) intrusions across the tropopause (PV streamers) are interconnected with surface high- and low- pressure systems and frequently present during high-impact weather in the mid-latitudes. They often form during the breaking of
Twitchett, Arwen Fay
core
Cold surge episodes over southeastern Brazil - a potential vorticity perspective [PDF]
, 2013 Most intense cold surges and associated frost events in southern and southeastern Brazil are characterized by a large amplitude trough over South America extending toward tropical latitudes and a ridge to the west of it over the Pacific Ocean.
Arnold, Julian +5 more
core +1 more source