UN chief 'never seen climate carnage' like Pakistan floods

UN chief 'never seen climate carnage' like Pakistan floods
UN chief 'never seen climate carnage' like Pakistan floods

United Nations Secretary-General Antonio Guterres said that he has "never seen climate carnage" on such a scale as he toured parts of Pakistan hit by floods, blaming wealthier countries for the devastation.

Nearly 1,400 people have died in flooding that covers an area the size of the United Kingdom and has wiped out crops and destroyed homes, businesses, roads and bridges.

Guterres has said he hopes his visit will galvanise support for Pakistan, which has put the provisional cost of the catastrophe at more than $30 billion, according to the government's flood relief centre.

"I have seen many humanitarian disasters in the world, but I have never seen climate carnage on this scale," he said at a press conference in the port city of Karachi after witnessing the worst of the damage in southern Pakistan. 

"I have simply no words to describe what I have seen today."

Pakistan receives heavy -- often destructive -- rains during its annual monsoon season, which is crucial for agriculture and water supplies.

But downpours as intense as this year's have not been seen for decades, while rapidly melting glaciers in the north have for months heaped pressure on waterways.

"Wealthier countries are morally responsible for helping developing countries like Pakistan to recover from disasters like this, and to adapt to build resilience to climate impacts that unfortunately will be repeated in the future," Guterres said, adding that G20 nations cause 80 percent of today's emissions.