Sentences with phrase «tropical cyclone activity»

«This tells us that the relationship between sea surface temperatures and cyclone activity seems to be robust and gives support to the debate that we are likely to see an increase in tropical cyclone activity in response to global warming,» he says.

The environmental and societal toll makes it important to understand the future of tropical cyclone activity in this region.

From the results presented in Kossin et al. the «suggestions» of increases in intense tropical cyclone activity in regions other than the Atlantic basin are not really so well supported, at least for the last 23 years.

In 2011, a new study found that «overall global tropical cyclone activity has decreased to historically low levels during the past five years.»

IPCC AR5 concluded that there is medium confidence that reduced aerosol forcing contributed to the observed increase in Atlantic tropical cyclone activity since the 1970s, but does not state any estimate of the magnitude of contribution.

The main modulating influence on tropical cyclone activity in the western North Pacific appears to be the changes in atmospheric circulation associated with ENSO, rather than local SSTs (Liu and Chan, 2003; Chan and Liu, 2004).

Basins that warm more than the tropical average tend to show larger increases in tropical cyclone activity for a number of metrics.

While this study is undoubtedly an important contribution to the literature, introducing a potentially useful methodology for refining estimates of past tropical cyclone activity in all the major basins, it is hardly the last word (see e.g. the discussion thread in our previous article on the paper).

... guided by a working assumption that an appropriately weighted composite of regional landfalling hurricane activity varies, at multidecadal and longer timescales, in rough proportion to basin - wide tropical cyclone activity.

The IPCC states that humans have, «more likely than not», contributed to the trend towards intense tropical cyclone activity since the 1970s.

While the new formula, which accounts for both temperature and salinity, can be used to forecast tropical cyclone intensity in real time, it can also be applied to the results of climate modeling to provide scientists with a framework to evaluate changes in future tropical cyclone activity.

However, an important question concerns whether global warming has or will substantially affect tropical cyclone activity in other basins.

Thus, the researchers interpreted the flood layers in their stalagmites largely as recording tropical cyclone activity.

When El Niño conditions are present in the equatorial Pacific like in 2015, tropical cyclone activity across the North Atlantic basin tends to be suppressed due to increased wind shear, an unfavorable condition for tropical cyclone development.

Monckton also claimed (I'm sorry if this is now becoming predictable) that 2010 was «the best year» for hurricanes with the lowest tropical cyclone activity for 30 years.

«Sahara greening may intensify tropical cyclone activity worldwide.»

In the Department of Meteorology at Stockholm University (MISU), researchers have done a series of model simulations investigating tropical cyclone activity during an earlier warm climate, the mid-Holocene, 6,000 years ago.

Crucially, the team warn however that while tropical cyclone activity in the North Atlantic could be suppressed by northern hemisphere injections, this would, at the same time, induce droughts in the Sahel.

They suggest that while injections of aerosols in the northern hemisphere would reduce tropical cyclone activity — responsible for such recent phenomena including Hurricane Katrina — it would at the same time lead to increased likelihood for drought in the Sahel, the area of sub-Saharan Africa just south of the Sahara desert.

This is why we have been moving toward predicting U.S. landfalling tropical cyclone activity and the associated rainfall,» he says.

«Hurricanes key to carbon uptake by forests: Increases in carbon uptake by southeast US forests in response to tropical cyclone activity alone exceed carbon emissions by American vehicles each year.»

Over the next few months, the globe might see an uptick in tropical cyclone activity thanks to an El Niño that is showing signs of asserting itself more forcefully.

The Accumulated Cyclone Energy (ACE) index of tropical cyclone activity also indicated a below - average season in the North Atlantic.

Such events included major heat waves and crippling drought in South Africa, heavy monsoon rains that led to extensive flooding in parts of India, drier conditions and major wildfires in Indonesia, and above - average tropical cyclone activity in much of the Pacific Ocean basin.

Part of the difficulty in identifying the human component, if any is, as the IPCC Summary itself notes, that tropical cyclone activity varies naturally over the decades.

«This variability makes detecting any long - term trends in tropical cyclone activity difficult,» according to the WMO statement.

Certainly on a global scale, there is no evidence of an increase in tropical cyclone activity over the last 50 years.

As for how tropical cyclone activity will respond to a warming planet, the literature is as Field notes «mixed».

«As new methods provide new opportunities we plan to examine further linkages between tropical cyclone activity and other climate indices and ways in which this new index could be incorporated into climate or forecasting models,» said Haig.

«We can not be sure that the decrease in tropical cyclone activity highlighted in our study is due to climate change, but nonetheless our results are mirroring these model forecasts,» said Haig.

In their words: «Our record of tropical cyclone activity reveals no trends in LACE in the best - sampled regions for the past 320 years.

Holland and Bruyère (2013) developed an Anthropogenic Climate Change Index (ACCI) to investigate the potential global warming contribution to current tropical cyclone activity.

Many other measures or terms exist, such as «named storm days», «hurricane days», «intense hurricanes», «net tropical cyclone activity», and so on.

In the bottom table, Klotzbach depicts the entire Northern Hemisphere's 2017 tropical cyclone activity versus the activity for the 1981 - 2010 period.

Global warming has, at present, had little or no increasing impact on northern hemisphere tropical cyclone activity.»

There are also suggestions of increased intense tropical cyclone activity in some other regions where concerns over data quality are greater.

Since the climate response to the North Atlantic SST anomalies is primarily forced at the low latitudes and the AWP is in the path of or a birthplace for Atlantic tropical cyclones, the influence of the AMO on Atlantic tropical cyclone activity may operate through the mechanism of the AWP - induced atmospheric changes.

Their results indicate that HiRAM successfully captures the influence of intraseasonal oscillations on tropical cyclone activity in the Gulf of Mexico region, including the formation of tropical storms and major hurricanes, as well as those that make landfall.

Denniston is one of few researchers worldwide using stalagmites to reconstruct past tropical cyclone activity, a field of research called paleotempestology.

What studies being alluded to have shown a connection between observed warming trends on Earth and long - term trends of tropical cyclone activity?

The greening of Sahara strengthens the West African Monsoon, which triggers a change in the atmospheric circulation over the entire tropics, affecting tropical cyclone activity.

«Consequently, tropical cyclone activity across the western Caribbean may remain essentially stable over the current century, which has important implications for water availability in this region.