The new analysis looked at results from three of the more than 20 comprehensive global climate models, which were selected because they most accurately matched actual weather data from the South Asian region.
Under a business-as-usual scenario, "wet-bulb temperatures are projected to approach the survivability threshold over most of South Asia, and exceed it at a few locations, by the end of the century", said the report.
The treaty aims to keep global average temperatures below 3.6 degrees Fahrenheit above pre-industrial levels and pursue efforts to keep warming under 2.7 degrees Fahrenheit.
With a scenario providing for a reduction of Carbon dioxide emissions similar to that which committed the signatory countries of the Paris Agreement on climate in 2015, temperatures will exceed even the 31 degrees Celsius, which is considered hazardous to health.
When wet-bulb temperatures reach 35C, the human body can not cool itself enough to survive more than a few hours.
About 30% of the population in the region would be exposed to these harmful temperatures, up from 0% at present, said the report.
"If climate change remains unabated, parts of South Asia will become uninhabitable without air conditioning during extreme years", study co-author Jeremy Pal, a professor of civil engineering and environmental science at Loyola Marymount University in Los Angeles said in an email to Courthouse News.
"The increase in temperatures and humidity during the summer could reach levels exceeding the capacity of the human body to survive without protection", determined the researchers whose work is published Wednesday in the journal Science Advances.
Arsene Wenger's update on Lacazette's injury
In terms of the players, the technical staff, the football - everything is different. That's what I came here for. "Week after week, Lacazette looks to adapt quickly".
"It brings us close to the threshold" of survivability as "anything in the 30s is very severe", Eltahir said. More than 1.7 billion people live on the Indian subcontinent and the population continues to grow, with India expected to overtake China as the world's most populous nation by 2025.
About 15 per cent of India's population gets exposed to those extreme temperatures of 31 or 32 C but under the business-as-usual model, that number would reach 75 per cent by 2100.
A fifth of the world's population could be forced to migrate from Asia due to climate change by the end of the century, scientists have warned. "This is particularly unjust because per capita greenhouse gas emissions in most of these poorer regions are less than a tenth of those in industrialized nations".
Climate change is not an abstract concept, it is impacting huge numbers of vulnerable people.
In today's climate, wet-bulb temperatures have rarely gone above 31C anywhere on Earth.
"We might start to see large migrations and climate refugees", he said. While the earlier report from Eltahir and his colleagues showed that this survivability limit would start to be exceeded occasionally in the Persian Gulf region by the end of this century, actual readings there in the summer of 2015 showed that the 35-degree wet-bulb limit had nearly been reached already, suggesting that such extremes could begin happening earlier than projected. "(I) t is not all doom and gloom".
In June, however, the USA announced its withdrawal from the accord, with President Donald Trump arguing that the agreement would hurt American jobs, which sparked global outcry.
Comments