Results 111 to 120 of about 10,485 (275)

A multi-scale comparison of polar vortices on Earth, Mars, Titan, and Venus

地球与行星物理论评
Although previous studies have analyzed the unique structural characteristics of the polar vortices on Earth, Venus, Mars, and Titan, the understanding of the polar vortices on Venus and Titan is primarily based on small-scale case studies due to the ...
Zheng Sheng, Gangyao Wu, Jie Zhang, Xiaohua Yang   +3 more
doaj   +1 more source

Anchor Flow Maps: Efficient Sampling and Approximation of the Entire Flow Map

Computer Graphics Forum, EarlyView.
Abstract Flow maps are a fundamental concept for the visualization and analysis of time‐dependent flows. A common approach is to apply sampling and reconstruction – which comes with a number of problems: flow maps are high‐dimensional functions with locally large gradients which makes approximations very challenging.
D. Stelter, T. Wilde, C. Rössl, H. Theisel   +3 more
wiley   +1 more source

The contour-advective semi-Lagrangian hybrid algorithm approach to weather forecasting and freely propagating inertia-gravity waves in the shallow-water system

, 2009
This thesis is aimed at extending the spherical barotropic contour-advective semi-Lagrangian (CASL) Algorithm, written in 1996 by David Dritschel and Maarten Ambaum, to more complex test cases within the shallow-water context.
Smith, Robert K.
core  

Potential vorticity of Saturn's polar regions: seasonality and instabilities

, 2019
We analyze the potential vorticity of Saturn's polar regions, as it is a fundamental dynamical tracer that enables us to improve our understanding of the dynamics of these regions and their seasonal variability. In particular, we present zonally averaged
PL Read (7625675), Read, Peter, Del Río-Gaztelurrutia, T, Sánchez-Lavega, A, T del Río-Gaztelurrutia (7770953), A Sánchez-Lavega (7638458), Fletcher, LN, A Antuñano (7711265), Read, PL, LN Fletcher (7625672), Antuñano, A   +10 more
core   +2 more sources

THE ROLE OF STRATOSPHERE-TROPOSPHERE ANOMALIES IN THE OCCURRENCE OF WIDESPREAD EXTREME LOW TEMPERATURES IN IRAN’S COLD SEASON FROM THE PERSPECTIVE OF POTENTIAL VORTICITY [PDF]

Przegląd Geofizyczny
This study investigates the role of stratosphere-troposphere anomalies in the occurrence of widespread extreme low temperatures in Iran’s cold season using the potential vorticity index from 1960 to 2010.
Mina Mirian, Mostafa Karampour, Sohrab Ghaedi   +2 more
doaj   +1 more source

Parallel Vectors Extraction using Bézier Clipping

Computer Graphics Forum, EarlyView.
Abstract In this paper, we propose a novel local feature extraction algorithm for the parallel vectors (PV) operator. Our method is based on Bézier clipping, which is a bracketing‐based root finding method that is commonly‐used in computer‐aided geometric design.
Nico Daßler, Tobias Günther
wiley   +1 more source

Sex differences in cerebral blood flow and cardiac function in response to exercise in the heat

Experimental Physiology, EarlyView.
Abstract We investigated the effect of exercising in hot conditions on cerebral blood flow and systolic left ventricular (LV) function in males and females, to explore sex differences. The experimental condition consisted of walking on a treadmill at 5 km/h and 2% incline, inside a heat chamber at 40°C (50% relative humidity), for 90 min.
João Carlos Locatelli, Juliene G. Costa, Kristanti W. Wigati, Jesse L. Criddle, Julie J. Collis, Xingwei Xu, Louise H. Naylor, Howard H. Carter, Shane K. Maloney, Robert A. McLaughlin, Andrew Haynes, Helen Jones, Keith George, Daniel J. Green   +13 more
wiley   +1 more source

The extratropical transition of tropical cyclone Lili (1996) and its crucial contribution to a moderate extratropical development

, 2005
The transition that a tropical cyclone experiences as it moves into the extratropical environment (known as extratropical transition) can result in the decay or intensification of a baroclinic cyclone.
Gray, S. L., Agusti-Panareda, A., Thorncroft, C., Agusti-Panareda, Anna, Thorncroft, Chris, Craig, G. C., Gray, Suzanne, Craig, George   +7 more
core  

Potential magnetic field and potential vorticity in magnetohydrodynamics [PDF]

Geophysical Journal International, 1996
SUMMARY New general expressions are given which extend theorems governing the behaviour of the potential vorticity (Ertel) pseudoscalar in continuum mechanics and the potential magnetic jeld (Hide) in electrodynamics. The laws of thermodynamics (involving entropy and potential temperature) are readily incorporated into the expressions, the application ...
openaire   +1 more source

Computational analysis to assess hemodynamic forces in descending thoracic aortic aneurysms

The Journal of Physiology, EarlyView.
Abstract figure legend Left: Pre‐processing. First, we perform the segmentation of the Computer Tomography angiorgraphy (angio‐CT) scans of a healthy patient, obtaining the surface of a healthy thoracic aorta with a Type III aortic arch. Then, we build nine ideal configurations with Descending Thoracic Aortic Aneurysm (DTAA), varying the aortic arch ...
Francesca Duca, Daniele Bissacco, Luca Crugnola, Chiara Faitini, Maurizio Domanin, Francesco Migliavacca, Santi Trimarchi, Christian Vergara   +7 more
wiley   +1 more source