نتایج جستجو برای: latitude cyclones

تعداد نتایج: 19938  

Journal: :International Journal of Climatology 2022

Tropical cyclones are associated with extreme winds, waves, and storm surge, being among most destructive natural phenomena. Developing capability for a rapid impact estimate is crucial coastal applications risk preparedness. When predicting waves characteristics to tropical cyclones, the traditional approach involves two-step procedure (a) Holland-type wind vortex model (b) numerical simulatio...

2017
Holland Hodges

Unprecedented warming in the Arctic has led to a dramatic reduction in both the extent and thickness of Arctic sea ice (Stroeve et al. 2011), opening up opportunities for business in diverse sectors such as fossil fuel and mineral extraction, shipping and tourism (Jung et al. 2016). Industrial activities in the Arctic are expected to be subject to high levels of investment over the coming decad...

2013
Minwoo Lee Charles W. Anderson Mark DeMaria

The National Centers for Environmental Prediction (NCEP) Global Forecast System (GFS) is a global spectral model used for aviation weather forecast. It produces forecasts of wind speed and direction, temperature, humidity and precipitation out to 192 hr every 6 hours over the entire globe. The horizontal resolution in operational version of the GFS is about 25 km. Much longer integration of sim...

2007
J. HOLLAND PETER J. WEBSTER

We find that long-period variations in tropical cyclone and hurricane frequency over the past century in the North Atlantic Ocean have occurred as three relatively stable regimes separated by sharp transitions. Each regime has seen 50% more cyclones and hurricanes than the previous regime and is associated with a distinct range of sea surface temperatures (SSTs) in the eastern Atlantic Ocean. O...

1997
W. Timothy Liu Wenqing Tang Scott Dunbar

monitored the evolution of the twin typhoons Violet and Tom. They moved north from the western tropical Pacific, acquiring the features of mid-latitude storms, with developing frontal structures, increasing asymmetry, and introduction of dry air into the core of the typhoons. While Violet hit Japan, causing destruction and death (Fig. 1), Tom merged with a mid-latitude trough and evolved into a...

2005
Alexander Gershunov

Synoptic extra-tropical cyclone and anticyclone trajectories have been constructed from mean daily sea level pressure (SLP) data using a new automated scheme. Frequency, intensity and trajectory characteristics of these transients have been summarized to form indices describing wintertime cyclonic and anticyclonic activity over the North-Eastern Pacific (east of 170 W) during 1950–2001. During ...

Journal: :Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 2007
Greg J Holland Peter J Webster

We find that long-period variations in tropical cyclone and hurricane frequency over the past century in the North Atlantic Ocean have occurred as three relatively stable regimes separated by sharp transitions. Each regime has seen 50% more cyclones and hurricanes than the previous regime and is associated with a distinct range of sea surface temperatures (SSTs) in the eastern Atlantic Ocean. O...

Journal: :Journal of the Meteorological Society of Japan. Ser. II 1956

Journal: :CoRR 2018
Sheila Alemany Jonathan Beltran Adrián Pérez Sam Ganzfried

Hurricanes are cyclones circulating about a defined center whose closed wind speeds exceed 75 mph originating over tropical and subtropical waters. At landfall, hurricanes can result in severe disasters. The accuracy of predicting their trajectory paths is critical to reduce economic loss and save human lives. Given the complexity and nonlinearity of weather data, a recurrent neural network (RN...

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