Sentences with phrase «cyclone maximum»

Based on process understanding and agreement in 21st century projections, it is likely that the global frequency of occurrence of tropical cyclones will either decrease or remain essentially unchanged, concurrent with a likely increase in both global mean tropical cyclone maximum wind speed and precipitation rates.

«Projections for the 21st century indicate that it is likely that the global frequency of tropical cyclones will either decrease or remain essentially unchanged, concurrent with a likely increase in both global mean tropical cyclone maximum wind speed and rain rates (Figure TS.26).

that it is likely that the global frequency of tropical cyclones will either decrease or remain essentially unchanged, concurrent with a likely increase in both global mean tropical cyclone maximum wind speed and rain rates

[James P. Kossin, Kerry A. Emanuel and Gabriel A. Vecchi, The poleward migration of the location of tropical cyclone maximum intensity] Researchers looked at the global record of tropical cyclones since the 1970s.

Not exact matches

The researchers also cite previous research showing that over the past 30 years, the location where tropical cyclones reach their maximum intensity has shifted away from the equator and toward the poles.

But it looks like tropical cyclones may be moving into areas not currently considered tropical, when the storms reach maximum strength.

According to the latest IPCC report, «tropical cyclone frequency is likely to decrease or remain unchanged over the 21st century, while intensity (i.e. maximum wind speed and rainfall rates) is likely to increase.»

«We found that the biggest tropical cyclones tend to be larger, with a larger radius and maximum winds of these storms in the later anthropogenic time period,» Reed said.

The Dvorak Technique has been used for many years at all global tropical cyclone forecast centers and has been shown in many cases to yield a good estimate of maximum TC wind speed, when applied properly (Knaff et al., 2010).

This leaves tropical cyclone forecasters, who are ultimately responsible for recording TC tracks and intensities (i.e. maximum wind speeds), with a challenging problem.

No Category 5 was observed until 1920 or so; with poorer observations, could the maximum intensity of cyclones have been missed (seems like it)?

With the exception of the South Pacific Ocean, all tropical cyclone basins show increases in the lifetime - maximum wind speeds of the strongest storms.

The extension of maximum cyclone intensity scales Greg Lade proposes has long been embodied in the Modified Beaufort Scale employed by cruising sailors the world over:

# 57 Solar activity (if you mean TSI) has no clear trend from 1980s (if any, less pronounced than the difference bewteen a minimum and a maximum in a cycle, and I'm not informed of a statistical link between solar cycle variation and cyclone activity).

The top time series is the number of global tropical cyclones that reached at least hurricane - force (maximum lifetime wind speed exceeds 64 - knots).

Under this scenario, peak precipitation rates are likely to increase by 25 % as a result of increases in maximum tropical cyclone wind intensities, which in turn cause higher storm surges.

They found that in the strongest cyclones, the maximum wind speeds have risen by about 29 kilometers per hour (18 mph) over the period of 1981 — 2006, a substantial amount.

By «cyclone,» the authors include all Atlantic tropical storms (up through category 5 hurricanes) with maximum sustained wind speeds of at least 63 kph.

The Louisiana storm didn't meet the criteria of a tropical depression as defined by the National Hurricane Center: a tropical cyclone in which the maximum sustained surface wind speed is 38 miles per hour (62 kilometers per hour) or less.

«With the exception of the South Pacific Ocean, all tropical cyclone basins show increases in the lifetime - maximum wind speeds of the strongest storms... Our results are qualitatively consistent with the hypothesis that as the seas warm, the ocean has more energy to convert to tropical cyclone wind.»

Worldwide there will likely be an average increase in the maximum wind speed of tropical cyclones (hurricanes and typhoons) of 2 to 11 %.6 Because of the way extremes respond to changes such as these, Category 4 and 5 hurricanes are expected to nearly double in number by the end of the century.7 The rate of rainfall associated with tropical cyclones, an important factor in flooding, is expected to increase approximately 20 % within 100 km of the center of these storms.8

[22] SLOSH inputs include the central pressure of a tropical cyclone, storm size, the cyclone's forward motion, its track, and maximum sustained winds.

The scientists also calculated the squares of the storms» maximum wind speeds to obtain the accumulated cyclone energy for each storm.

When comparing a category 5 and a category 6 tropical cyclone of the same duration, given the difference in their intensity characterized by maximum wind speed, the kinetic energy of the category 6 storm of 165 to 185 knots would be 139 % — 175 % higher than the category 5 storm of 140 knots, Lin said.

DeMaria, M., and Kaplan, J., 1994: Sea Surface Temperature and the Maximum Intensity of Atlantic Tropical Cyclones.

The method is a way to estimate the maximum surface sustained wind over one minute which is the most significant data of a cyclone intensity.

RE # 150 The most important parameter is the maximum surface sustained wind when you are analysing the tropical cyclones intensity with the satellite pictures.

DeMaria and Kaplan (1994) show that only 20 % of the cyclones of the North Atlantic reach 80 % or more theirs potential maximum intensity, case in which the intensity reached by a cyclone is in balance with the temperature of surface of the ocean in the absence of dynamic stresses in the atmosphere.

as defined by the National Hurricane Center: a tropical cyclone in which the maximum sustained surface wind speed is 38 miles per hour (62 kilometers per hour) or less.

[2000](hereafter as EJN) address multidecadal changes of Atlantic basin major hurricanes - those tropical cyclones with maximum sustained surface winds of at least 50 m / s.

[13] Using the Dvorak technique, infrared satellite imagery can be used to determine the temperature difference between the eye and the cloud top temperature of the central dense overcast of mature tropical cyclones to estimate their maximum sustained winds and their minimum central pressures.

Recent work (Kossin et al. 2014; see GFDL Research Highlight) indicates that the latitude at which the maximum intensity of tropical cyclones occurs has expanded poleward globally in recent decades, although the causes for this have not been firmly established and a significant change was not seen in the Atlantic basin statistics.

There have been a number of interesting new studies of Atlantic tropical cyclones (TCs) and hurricanes (tropical cyclones with maximum sustained winds exceeding 74 miles per hour) since my review of the topic a couple years ago (see here and here).

This is mainly because the area of maximum cyclone intensity has moved nearer the East Asian coastline, the researchers believe, boosting cyclone intensity at landfall — when the centre of the storm hits the coast — over easten China, Korea and Japan.

Following the general concepts outlined by Emanuel (1987), Holland (1997) has derived an alternative thermodynamic approach to estimate maximum potential intensity of tropical cyclones.

The National Oceanic and Atmospheric Administration (NOAA) defines a hurricane as a tropical cyclone with maximum sustained winds of 74 miles per hour or greater.