A polar low observed over the Norwegian Sea on 3-4 March 2008: high-resolution numerical experiments

2012 ◽  
Vol 138 (669) ◽  
pp. 1983-1998 ◽  
Author(s):  
Ivan Føre ◽  
Thor Erik Nordeng
Keyword(s):  
High Resolution ◽  
Numerical Experiments ◽  
Norwegian Sea ◽  
Polar Low

Axisymmetric Hurricane in a Dry Atmosphere: Theoretical Framework and Numerical Experiments

2011 ◽  
Vol 68 (8) ◽  
pp. 1607-1619 ◽  
Author(s):  
Agnieszka A. Mrowiec ◽  
Stephen T. Garner ◽  
Olivier M. Pauluis
Keyword(s):  
Water Vapor ◽  
High Resolution ◽  
Numerical Model ◽  
Numerical Experiments ◽  
Momentum Flux ◽  
Theoretical Framework ◽  
Moist Processes ◽  
Energy And Momentum ◽  
The Relationship ◽  
Theoretical Insight

Abstract This paper discusses the possible existence of hurricanes in an atmosphere without water vapor and analyzes the dynamic and thermodynamic structures of simulated hurricane-like storms in moist and dry environments. It is first shown that the “potential intensity” theory for axisymmetric hurricanes is directly applicable to the maintenance of a balanced vortex sustained by a combination of surface energy and momentum flux, even in the absence of water vapor. This theoretical insight is confirmed by simulations with a high-resolution numerical model. The same model is then used to compare dry and moist hurricanes. While it is found that both types of storms exhibit many similarities and fit well within the theoretical framework, there are several differences, most notably in the storm inflow and in the relationship between hurricane size and intensity. Such differences indicate that while water vapor is not necessary for the maintenance of hurricane-like vortices, moist processes directly affect the structure of these storms.

Targeted observations of a polar low in the Norwegian Sea

2011 ◽  
Vol 137 (660) ◽  
pp. 1688-1699 ◽  
Author(s):  
E. A. Irvine ◽  
S. L. Gray ◽  
J. Methven
Keyword(s):  
Norwegian Sea ◽  
Polar Low ◽  
Targeted Observations

A Polar Low Observed Over the Korea Strait on 11 February 2011: High-resolution Numerical Simulations

2017 ◽  
Vol 17 (3) ◽  
pp. 55-67 ◽  
Author(s):  
Yujin Kim ◽  
◽  
Mirae Hong ◽  
Jae Gyoo Lee ◽  
◽  
...  
Keyword(s):  
High Resolution ◽  
Numerical Simulations ◽  
Korea Strait ◽  
Polar Low

Report of a Workshop on Theoretical and Observational Studies of Polar Lows” of the European Geophysical Society Polar Lows Working Group

1997 ◽  
Vol 78 (11) ◽  
pp. 2643-2658 ◽  
Author(s):  
Gunther Heinemann ◽  
Chantal Claud
Keyword(s):  
Observational Studies ◽  
Numerical Models ◽  
The United States ◽  
Weddell Sea ◽  
Polar Lows ◽  
Norwegian Sea ◽  
The United Kingdom ◽  
Polar Low ◽  
Working Groups ◽  
Northern And Southern Hemispheres

A workshop on theoretical and observational studies of polar lows was held in St. Petersburg, Russia, 23–26 September 1996. An international group with scientists and students from Canada, Denmark, Germany, Norway, Russia, the United Kingdom, and the United States participated in the workshop. The papers presented covered the fields of climatological studies, studies using numerical models, and satellite studies for the Northern and Southern Hemispheres. Two polar low cases were investigated in more detail during working groups sessions: The polar low “Le Cygne” occurring 13–16 October 1993 over the Norwegian Sea, and a Southern Hemisphere polar low occurring 30 July–1 August 1986 over the Weddell Sea. Programs related to polar low research were presented in order to coordinate the international efforts in investigating polar mesocyclones. The workshop showed the progress achieved by using 1) the synergetic combination of the satellite data presently available, and 2) mesoscale numerical models for the understanding of the development and the physical processes of polar mesocyclones.

High‐resolution, high‐accuracy altimeter derived mean sea surface in the Norwegian Sea

1990 ◽  
Vol 14 (1) ◽  
pp. 57-76 ◽  
Author(s):  
Frédérique Blanc ◽  
Sabine Houry ◽  
Pierre Mazzega ◽  
Jean François Minster
Keyword(s):  
High Resolution ◽  
High Accuracy ◽  
Sea Surface ◽  
Norwegian Sea ◽  
Mean Sea Surface

scholarly journals A Relaxation Filtering Approach for Two-Dimensional Rayleigh–Taylor Instability-Induced Flows

Fluids ◽  
2019 ◽  
Vol 4 (2) ◽  
pp. 78 ◽  
Author(s):  
Sk. Mashfiqur Rahman ◽  
Omer San
Keyword(s):  
High Resolution ◽  
Numerical Experiments ◽  
Single Mode ◽  
Taylor Instability ◽  
Two Dimensional ◽  
Reconstruction Scheme ◽  
Rayleigh Taylor Instability ◽  
Multi Mode ◽  
Filtering Approach ◽  
Point Stencil

In this paper, we investigate the performance of a relaxation filtering approach for the Euler turbulence using a central seven-point stencil reconstruction scheme. High-resolution numerical experiments are performed for both multi-mode and single-mode

NUMERICAL MODELING OF POLAR LOWS OVER THE BARENTS SEA: IMPACT OF WRF PARAMETRIZATIONS ON THE QUALITY OF FORECAST.

2017 ◽  
Author(s):  
Antonina Polezhayeva ◽  
Antonina Polezhayeva
Keyword(s):  
Boundary Layer ◽  
Numerical Experiments ◽  
Barents Sea ◽  
Wrf Model ◽  
Polar Lows ◽  
The Barents Sea ◽  
Polar Low ◽  
Planetary Boundary Layer Parameterization ◽  
The Impact

Polar lows are generally characterized by severe weather in the form of strong winds, showers and occasionally heavy snow, which have sometimes resulted in the loss of life, especially at sea. Numerical simulations with mesoscale atmospheric models is a good alternative to investigate polar low phenomenon, because they produce temporally and spatially regular-spaced fields of atmospheric variables with high resolution. To describe the evolution of atmospheric processes the Advanced Weather Research and Forecasting (WRF-ARW) model was used. The principal objectives of this study were 1) the understanding of mesoscale WRF model and adapting the model for the Barents Sea region; 2) to conduct numerical experiments using WRF model with different Planetary Boundary Layer parameterization (PBLs) schemes and investigate the impact of each scheme on the quality of forecast; and 3) the investigation of the capability of WRF model to successfully simulate evolution of polar lows. The impact on the quality of forecast was investigated. The results of the study, obtained by numerical modeling of polar mesoscale low over the Barents Sea. One polar low, near Spitsbergen, from 24 of March to 26 of March 2014 were targeted. The results of numerical experiments showed that each of Planetary Boundary Layer parameterization scheme isn't successful for simulation of polar low.

High-resolution ensemble prediction of a polar low development

2011 ◽  
Author(s):  
Jørn Kristiansen ◽  
Silje Lund Sørland ◽  
Trond Iversen ◽  
Dag Bjørge ◽  
Morten Ødegaard Køltzow
Keyword(s):  
High Resolution ◽  
Ensemble Prediction ◽  
Polar Low

Identification of geohazards based on the data of marine high-resolution 3D seismic observations in the Norwegian Sea

2015 ◽  
Vol 70 (1) ◽  
pp. 53-61 ◽  
Author(s):  
A. A. Shmatkova ◽  
A. A. Shmatkov ◽  
V. G. Gainanov ◽  
S. Buenz
Keyword(s):  
High Resolution ◽  
3D Seismic ◽  
Norwegian Sea
Sign in / Sign up

Export Citation Format

Share Document