Study pre­dicts tem­per­a­ture in­crease across South Asia

China Daily (Hong Kong) - - WORLD -

WASH­ING­TON — By the end of this cen­tury, sum­mer heat waves could ex­ceed the up­per limit of hu­man sur­viv­abil­ity in ar­eas of South Asia, a new study said on Wed­nes­day.

The worst-af­fected re­gions would be the Chota Nag­pur Plateau, north­east­ern In­dia, and Bangladesh, ac­cord­ing to the study pub­lished by the US jour­nal Sci­ence Ad­vances.

“Our find­ings have sig­nif­i­cant im­pli­ca­tions to the on­go­ing con­sid­er­a­tions re­gard­ing cli­mate change pol­icy,” said the study, which is based on de­tailed com­puter sim­u­la­tions us­ing the best avail­able global cir­cu­la­tion mod­els.

The re­search is based on two cli­mate mod­els. One is a “busi­ness-as-usual” sce­nario in which lit­tle is done to con­tain cli­mate change, and the se­cond is aimed at lim­it­ing tem­per­a­ture rise to well below 2 C, as pledged by more than 190 na­tions un­der the 2015 Paris cli­mate ac­cord.

The study is the first of its kind to look not just at tem­per­a­tures, but at the fore­cast of “wet-bulb tem­per­a­ture,” which com­bines tem­per­a­ture, hu­mid­ity and the body’s abil­ity to cool down.

Our find­ings have sig­nif­i­cant im­pli­ca­tions ... re­gard­ing cli­mate change pol­icy.” Sci­ence Ad­vances re­port of South Asia’s pop­u­la­tion would be ex­posed to harm­ful tem­per­a­tures, said the re­port.

The sur­viv­abil­ity thresh­old is con­sid­ered to be 35 C.

“It is hard to imag­ine con­di­tions that are too hot for peo­ple to sur­vive for a more than a few min­utes, but that is ex­actly what is be­ing dis­cussed in this pa­per,” said Stan­ford Uni­ver­sity cli­mate sci­en­tist Chris Field, who was not in­volved in the study. “And of course, the dan­ger thresh­old for pun­ish­ing heat and hu­mid­ity is lower for

Newspapers in English

Newspapers from China

© PressReader. All rights reserved.