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Researchers say that climate change is a major factor in the deadly November Asian storms.

Scientists said that the storms which devastated Sri Lanka in late November, Indonesia, Malaysia, and Thailand were'supercharged' by increased sea temperatures, and made worse by rapid forest destruction, according to a new study. Tropical Cyclone Senyar, which formed in the Malacca Strait and devastated Southeast Asia, killed nearly 1,200 people, 969 of whom were on Sumatra, an island in Indonesia. For the damages to be repaired, at least $3 billion is needed in relief funds. Sri Lanka has been hit by flooding and landslides due to Tropical Cyclone Ditwah. The death toll is over?600, and the economic losses are estimated at $7 billion.

Researchers with the World Climate?Attribution Group said that the sea surface temperature in the North Indian Ocean was 0.2 degrees Celsius above the average for 1991-2020, giving the storms more heat and energy.

They estimated that if it wasn't for the 1.3C increase in global temperatures since pre-industrial times, the surface of the sea in the area would have been one degree cooler in late November. Scientists say that there is no evidence to suggest climate change has increased the frequency of tropical storms, but they do say that higher sea temperatures make individual events more damaging.

The study's author and climate researcher Sarah Kew said, "What isn't normal is the?intensity of these storms. They are affecting millions and killing hundreds of people."

Researchers were unable to determine climate change's exact contribution to storms, but they did say that the increased extreme rainfall in the Malacca Strait could be 9-50% higher than normal and up to 28-160% more in Sri Lanka. Scientists warn that extreme weather could affect more areas as storms move to new locations and take different paths.

Scientists said that Senyar was the only storm to ever land in Malaysia after it crossed the Malacca Strait from the west. (Reporting and editing by Topra Chopra; David Stanway, reporting)

(source: Reuters)