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AP more vulnerable to global warming
April brought a spell of devastating rains that threatened Rabi crop, caused loss of lives and damage to properties across north and northwest India. Arguably, the most devastating spell of pre-monsoon showers hit eastern Rajasthan and Haryana on April 11, when Alwar, Bharatpur and Bhiwani received 40mm, 15mm and 14mm of rains respectively.
April brought a spell of devastating rains that threatened Rabi crop, caused loss of lives and damage to properties across north and northwest India. Arguably, the most devastating spell of pre-monsoon showers hit eastern Rajasthan and Haryana on April 11, when Alwar, Bharatpur and Bhiwani received 40mm, 15mm and 14mm of rains respectively. While this may not seem much, these amounts account for nearly 900 per cent, 400 per cent and 250 per cent of the normal rain received by these districts in April.
In fact, intense rainfall also wreaked havoc in Himachal Pradesh early April where around 15-20 animals perished in a cloudburst incident in Shimla district. Heavy rain coupled with hailstorm caused huge loss to the standing wheat crop in the lower regions and apple crop in Shimla district.
According to a recent study on extreme rainfall events, precipitation extremes in south and central India are more sensitive to warming than north India, which means that south and central India may witness more rainfall extremes in response to climate warming.
Earlier in February, hailstorms, unseasonal rains damaged 4.76 lakh hectares of crop in Punjab, Chhattisgarh, Haryana, Maharashtra, Uttar Pradesh, Madhya Pradesh, Rajasthan, Telangana and Karnataka. Around 300,000 hectares of crops like jowar, gram, wheat and horticulture crops like orange, grapes, bananas and vegetables were damaged in Maharashtra alone.
The most recent example of this freak weather is Andhra Pradesh. While its Rayalaseema region sizzled at about 43 degree Celsius on May 1, with seven people dying due to sunstroke, at least 11 people were killed in several parts of north coastal Andhra Pradesh due to heavy downpour accompanied by lightning. Since the onset of summer, heat wave has claimed 15 lives in Andhra Pradesh.
According to a study by the Indian Institute of Technology (IIT) Gandhinagar, the frequency of severe heat waves in India will increase 30-fold by 2100 under a 2°C warming scenario. Under a business-as-usual scenario, heat-wave frequency might increase 75-fold.
"Heat waves like 1998 are projected to occur every year in the late 21st century under a business-as-usual scenario," says Vimal Mishra, the lead researcher of the study published in December 2017.
(Courtesy: downtoearth)
