Sentences with phrase «cyclone numbers increase»

In the summer (JJA) and autumn (SON) of strong El Niño years, tropical cyclone numbers increase markedly in the southeastern quadrant of the western North Pacific (0 ° N — 17 ° N, 140 ° E — 180 ° E) and decrease in the northwestern quadrant (17 ° N — 30 ° N, 120 ° E — 140 ° E; Wang and Chan, 2002).

Not exact matches

Even if the number of tropical cyclones that form in the Atlantic increases, that doesn't guarantee that the number making landfall will also rise.

These relationships have been reinforced by findings of a large increase in numbers and proportion of hurricanes reaching categories 4 and 5 globally since 1970 even as total number of cyclones and cyclone days decreased slightly in most basins.

According to the most recent Intergovernmental Panel on Climate Change report, the wind speed and rainfall rates in tropical cyclones are projected to increase during the 21st century, even while the total number of tropical cyclones remains nearly steady, or even decreases.

As the climate changes, tropical cyclones are expected to produce more rain and the frequency of the highest intensity storms is projected to increase even though the overall number of storms may remain unchanged or perhaps even decrease.

Accompanying this increase in tropical cyclone numbers is a marked SST warming to unprecedented anomaly levels exceeding +0.7 C.

Do the data that we do have show that Arctic cyclones are increasing in number?

Overall, there appears to have been a substantial 100 - year trend leading to related increases of over 0.78 C in SST and over 100 % in tropical cyclone and hurricane numbers.

Annual numbers then increased to a new stable regime averaging around 10 tropical cyclones per year from 1931 to 1994 (climate regime TC2).

It also states that even though there is some evidence of increased intensity, «There is no clear trend in the annual numbers of tropical cyclones.»

I wonder if the fact the higher SSTs will lead to somewhat longer seasons (and 2005 certainly had that), and larger sea - surface area where TCs might form, would serve to counteract the effect you describe, and still lead, net - net, to an increase in the number of tropical cyclones with higher SSTs.

While the total number of cyclones may not increase (though there seems to be quite a bit of uncertainty here), the intense ones are projected to increase.

See Wikipedia for the long term trend in number of storms: «While the number of storms in the Atlantic has increased since 1995, there seems to be no signs of a global trend; the global number of tropical cyclones remains about 90 ± 10.»

I wonder could it be the influence of an increasing number of cyclones (caused by global warming???) hitting the north west coast and moving inland in a south easterly direction, providing brief but heavy rain to an otherwise dry area?

Did you ever realise that this is not the result of global cooling or the lack of global warming, but an increased number of tropical cyclones likely as a result of global warming?

Note that it doesn't increase the total number of cyclones; it only makes the strongest ones stronger.

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

[20] In the US southern climatic region (which extends from Mississippi through Texas) the number of daily heavy precipitation events has increased by 25 percent over the long - term average, and tropical cyclones contributed 48 percent of that increase.

While there has been a recent increase in the number of landfalling US hurricanes, the increase in tropical cyclone - associated heavy events is much higher than would be expected from the pre-1994 association between the two, indicating that the upward trend in heavy precipitation events is due to an increase in the number of heavy precipitation events per system.

«For the high emissions scenario, it is likely that the frequency of hot days will increase by a factor of 10 in most regions of the world», said Thomas Stocker the other Co-chair of Working Group I. «Likewise, heavy precipitation will occur more often, and the wind speed of tropical cyclones will increase while their number will likely remain constant or decrease».

In the mid-2000s, a number of researchers claimed that man - made global warming was causing a noticeable increase in the frequency and intensity of tropical cyclones.

These risks are three-fold: the increased number of events like floods and cyclones; droughts in some parts of the country and in long - term effects of coastal erosion affecting a large portion of the population.

By late this century, models on average project a slight decrease in the number of tropical cyclones each year, but an increase in the number of the strongest (Category 4 and 5) hurricanes and greater rainfall rates in hurricanes (increases of about 20 percent averaged near the center of hurricanes).

Variations in tropical cyclones, hurricanes and typhoons are dominated by ENSO and decadal variability, which result in a redistribution of tropical storm numbers and their tracks, so that increases in one basin are often compensated by decreases over other oceans.

Using NCEP - 2 reanalysis data, Lim and Simmonds (2002) showed that for 1979 to 1999, increasing trends in the annual number of explosively developing (deepening by 1 hPa per hour or more) extratropical cyclones are signifi cant in the SH and over the globe (0.56 and 0.78 more systems per year, respectively), while the positive trend did not achieve signifi cance in the NH.

It now looks like the plaent is in for something terrible in this part of the world, and in other regions which are affected by tropical cyclones, a massive increase in the numbers and intensities of such storms.

Since we have good reason to expect that the response may be different in the Atlantic, using evidence for increases in strength of Pacific cyclones as an argument for why we should expect increases in the number of major Atlantic hurricanes makes no sense to me.

On the global scale, there is no mechanism to counter global warming, so everything indicates that we should expect an increase in major tropical cyclone numbers.

With the slowly increasing SSTs as a result of global warming, greater numbers of tropical depressions will likely form, which, over warm water may mature into tropical storms, which over even warmer water may strengthen to tropical cyclones.

Key findings from these experiments include: fewer tropical cyclones globally in a warmer late - twenty - first - century climate (Figure 8), but also an increase in average cyclone intensity, the number and occurrence days of very intense category 4 and 5 storms in most basins (Figure 9) and in tropical cyclone precipitation rates (Figure 10).

We thought tropical cyclones might increase in number but we never expected them to move.

there has been no increase in the number of tropical cyclones and that much of the perceived change in numbers is a result of improved storm detection methods.