Tornado Alley (PROG)

[F6]

Super typhoons becoming more powerful and more frequent, new study finds

Super typhoon Nepartak barrels towards Taiwan in July this year.

Haiyan typhoon from space.
1:36 AM - 21 Nov 2013
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Haiyan typhoon from space. @NASA pic.twitter.com/FtNykXpYtI

— Gaby Peñagarícano (@eaag) November 21, 2013

]
September 6 2016
The most destructive categories of tropical storms to strike the heavily populated regions of east Asia are becoming more intense and increasing as much as four-fold in frequency because of climate change, according to new research by US-based scientists.
[...]
http://www.smh.com.au/environment/climate-change/super-typhoons-becoming-more-powerful-and-more-frequent-new-study-finds-20160905-gr8rch.html [with embedded video]


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Asian typhoons becoming more intense, study finds

On 7 July 2015, satellite images showed the Pacific Ocean with two typhoons, one tropical storm, one formation alert and one large area of increased convection.
Giant storms that wreak havoc across China, Japan, Korea and the Philippines have grown 50% stronger in the past 40 years due to warming seas
5 September 2016
The destructive power of the typhoons that wreak havoc across China, Japan, Korea and the Philippines has intensified by 50% in the past 40 years due to warming seas, a new study has found.
The researchers warn that global warming will lead the giant storms to become even stronger in the future, threatening the large and growing coastal populations of those nations.
“It is a very, very substantial increase,” said Prof Wei Mei, at the University of North Carolina at Chapel Hill, who led the new work. “We believe the results are very important for east Asian countries because of the huge populations in these areas. People should be aware of the increase in typhoon intensity because when they make landfall these can cause much more damage.”
[...]
https://www.theguardian.com/environment/2016/sep/05/asian-typhoons-becoming-more-intense-study-finds [with comments]


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Intensification of landfalling typhoons over the northwest Pacific since the late 1970s
Nature Geoscience (2016) doi:10.1038/ngeo2792
Published online 05 September 2016
Abstract
Intensity changes in landfalling typhoons are of great concern to East and Southeast Asian countries1. Regional changes in typhoon intensity, however, are poorly known owing to inconsistencies among different data sets2, 3, 4, 5, 6, 7, 8. Here, we apply cluster analysis to bias-corrected data and show that, over the past 37 years, typhoons that strike East and Southeast Asia have intensified by 12–15%, with the proportion of storms of categories 4 and 5 having doubled or even tripled. In contrast, typhoons that stay over the open ocean have experienced only modest changes. These regional changes are consistent between operational data sets. To identify the physical mechanisms, we decompose intensity changes into contributions from intensification rate and intensification duration. We find that the increased intensity of landfalling typhoons is due to strengthened intensification rates, which in turn are tied to locally enhanced ocean surface warming on the rim of East and Southeast Asia. The projected ocean surface warming pattern under increasing greenhouse gas forcing suggests that typhoons striking eastern mainland China, Taiwan, Korea and Japan will intensify further. Given disproportionate damages by intense typhoons1, this represents a heightened threat to people and properties in the region.
http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo2792.html


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Typhoons striking China and Southeast Asia have become much stronger

Super Typhoon Neoguri Bears Down on Okinawa, Japan Mainland on Jul 07, 2014.
[ http://www.nnvl.noaa.gov/MediaDetail2.php?MediaID=1586&MediaTypeID=1 ]
And they're likely to get worse
Sep 5, 2016
http://www.theverge.com/2016/9/5/12776814/typhoons-intensity-china-southeast-asia-climate-change


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