Thursday, February 21, 2019
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)

 
  LATEST COMMENTS (0)
POST YOUR COMMENT
Comments Not Available
 
POST YOUR COMMENT
 
 
TRENDING TOPICS
 
 
CITY NEWS
MORE CITIES
 
 
 
MORE SCIENCE NEWS
Samsung launches flagship Galaxy S10, S1...
Netanyahu postpones meeting with Putin: ...
Australian rat becomes first mammal to g...
Citizen scientist finds ancient white dw...
Full self-driving Tesla car coming soon,...
Russian hackers can infiltrate your syst...
More...
 
INDIA WORLD ASIA
Hyderabad: Madrasas hold protest condemn...
Shimla: Snowfall in Kufri, Chharabra dis...
BJP politicising Pulwama terror attack: ...
Amit Shah to launch BJPs beneficiaries ...
J-K: Community bunkers being made forsa...
Maharashtra: Farmers begin Nashik to Mum...
More...    
 
 Top Stories
Fire kills at least 45 in Banglades... 
Girl in China climbs through train ... 
Alabama woman who joined IS should ... 
US President Trump likely to visit ... 
Iraqi PM, Saudi king discuss boosti... 
UK revokes citizenship of teen who ... 
BJP politicising Pulwama terror att... 
Venezuela's Guaido calls for demons...