نتایج جستجو برای: wind storm

تعداد نتایج: 99084  

2010
Scott B. Capps Charles S. Zender

[1] For the first time, global ocean usable wind power is evaluated for modern offshore turbine characteristics including hub height, usable portion of the wind speed distribution, and siting depth. Mean wind power increases by 30%, 69%, and 73% within the tropics and Northern and Southern Hemisphere extratropics, respectively, between hub heights of 10 m and 100 m. A turbine with a cut‐out spe...

2013
Divya Aggarwal Naveen Kwatra

Tall building can vibrate in both the directions of Along wind and Across wind caused by the flow of wind. Modern Tall buildings designed to satisfy lateral drift requirements, still may oscillate excessively during wind storm. These oscillations can cause some threats to the tall building as buildings with more and more height becomes more vulnerable to oscillate at high speed winds. Sometimes...

2002
Zbigniew Suraj Wojciech Rząsa

A radar data processing system gathers meteorological volumetric radar data by conducting a volume scan. Meteorologists use these radar data to detect thunderstorms. Radar subsystem exists to allow operational meteorologists to focus their attention on the regions of interest within the volumetric radar scan known as storm cells. When a storm is found, a number of parameters are computed. There...

Behnoush Farokhzadeh Davoud Akhzari, Iman Saeedi Mohsen Goodarzi

Dust storms are known as hazardous problems in western part of Iran. Iraq is one of the main sources for dust storm arriving to the western part of Iran. The Radial Basis Function Network model (RBFN) has been used to assess wind erosion hazards in the source area of dust storms over several western Iranian cities. Normalized Difference Salinity Index (NDSI) was used to determine the changes in...

2005
Jeffrey H. Yin

[1] A consistent poleward and upward shift and intensification of the storm tracks is found in an ensemble of 21st century climate simulations performed by 15 coupled climate models. The shift of the storm tracks is accompanied by a poleward shift and upward expansion of the midlatitude baroclinic regions associated with enhanced warming in the tropical upper troposphere and increased tropopaus...

1999
F. VITART W. F. STERN

Tropical storms simulated by a nine-member ensemble of GCM integrations forced by observed SSTs have been tracked by an objective procedure for the period 1980–88. Statistics on tropical storm frequency, intensity, and first location have been produced. Statistical tools such as the chi-square and the Kolmogorov–Smirnov test indicate that there is significant potential predictability of interan...

2011
Margarida L. R. Liberato Joaquim G. Pinto Isabel F. Trigo Ricardo M. Trigo

Extratropical cyclones are one of the most important features of the mid-latitude climate and represent a primary mechanism for poleward transport of heat and moisture. They typically develop as a result of the interaction between warm subtropical air and cold polar air masses over the mid-latitudes of both hemispheres. Over the North Atlantic (NA) extratropical cyclones (depressions) often und...

1999
ERIC D. MALONEY DENNIS L. HARTMANN

Hurricane and tropical storm statistics verify the modulation of eastern Pacific tropical systems by the Madden– Julian oscillation (MJO) as hypothesized by Maloney and Hartmann. Over twice as many named tropical systems (hurricanes and tropical storms) accompany equatorial 850-mb westerly anomalies than accompany equatorial easterly anomalies, and the systems that do exist are stronger. Hurric...

1998
T. R. Knutson R. E. Tuleya

The impact of CO 2 -induced global warming on the intensities of strong hurricanes is investigated using the GFDL regional high-resolution hurricane prediction system. The large-scale initial conditions and boundary conditions for the regional model experiments, including SSTs, are derived from control and transient CO 2 increase experiments with the GFDL R30-resolution global coupled climate m...

2009
Scott B. Capps Charles S. Zender

[1] Global ocean wind power has recently been assessed (W. T. Liu et al., 2008) using scatterometry-based 10 m winds. We characterize, for the first time, wind power at 80 m (typical wind turbine hub height) above the global ocean surface, and account for the effects of surface layer stability. Accounting for realistic turbine height and atmospheric stability increases mean global ocean wind po...

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