Saturday, February 24, 2018
News

Lightning storms to drop as climate warms

   SocialTwist Tell-a-Friend    Print this Page   COMMENT

London | Tuesday, 2018 2:15:04 PM IST
 
New research forecasts a 15 per cent drop in the average number of lightning flashes worldwide by the turn of this century, if global temperatures are in the top range of forecasts.

The results, published in the journal Nature Climate Change, account for a five degree Celsius rise in global average temperatures by the year 2100.

"This research expands our current knowledge of climate change impacts on lightning and suggests that in a warmer world, the incidence of lightning is likely to decrease," said Professor Ruth Doherty of University of Edinburgh in Britain.

Scientists estimate there are 1.4 billion lightning flashes each year around the world.

A drop in the incidence of lightning strikes could impact on the frequency of wildfires, especially in tropical regions.

It could also lower the incidence of lightning strikes to infrastructure and affect how greenhouse gases in the atmosphere contribute to climate change.

For the study, the scientists used a newly-devised method to calculate the likely incidence of lightning flashes from storm clouds.

Unlike traditional calculations of lightning flashes at the global scale, which are based on the height of clouds, their approach takes into account the movement of tiny ice particles that form and move within clouds.

Electrical charges build up in these ice particles, and in cold water droplets and soft hail formed inside clouds.

These are discharged during storms, giving rise to lightning flashes and thunder.

The new study shows that on average lightning flashes are less likely in future, in contrast to previous studies.

"These results suggest that lightning schemes more closely related to cloud ice and microphysical processes are needed to robustly estimate future changes in lightning and atmospheric composition," the study said.

--IANS gb/sac

( 295 Words)

2018-02-13-13:34:07 (IANS)

Watch News Videos

 
  LATEST COMMENTS (0)
POST YOUR COMMENT
Comments Not Available
 
POST YOUR COMMENT
 
TRENDING TOPICS
 
 
 
CITY NEWS
MORE CITIES
 
MORE SCIENCE NEWS
Neanderthals were first known artists on...
A university helps conserve mountain eco...
World Bank interested in expanding satel...
No space for misuse of religion, says Mo...
Amateur astronomer snaps exploding star'...
New shark species discovered in Atlantic...
More...
 
INDIA WORLD ASIA
UN chief signs Global Counter-Terrorism ...
Alphons rubbishes Rahul allegation that ...
Bringing innovation to forefront: WWF-In...
Delhi CS assault case: Bail plea of AAP ...
IUIH to invest Rs 1000 cr in healthcare ...
PM to visit Pondy on Feb 25...
More...    
 
 Top Stories
Gift green plants, orange gujiya on... 
I love Indian media, says Donald Tr... 
Alphons rubbishes Rahul allegation ... 
Death toll in twin car bomb attack ... 
Ex-Trump campaign aide Gates expect... 
Waqf Mosque can only be built on Wa... 
BJP promoted capitalism, industrial... 
Six rivers to be resurrected in UP ...