Global temperatures are running far above last year’s record-setting
level, all but guaranteeing that 2015 will be the hottest year in the
historical record — and undermining political claims that global warming had somehow stopped.

The National Oceanic and Atmospheric Administration, the American agency that tracks worldwide temperatures, announced
Wednesday that last month had been the hottest September on record, and
in fact took the biggest leap above the previous September that any
month has displayed since 1880
, when tracking began at a global scale.
The agency also announced that the January-to-September period had been
the hottest such span on the books.

extreme heat and related climate disturbances mean that delegates to a
global climate conference scheduled for Paris in early December will
almost certainly be convening as weather-related disasters are unfolding
around the world, putting them under greater political pressure to
reach an ambitious deal to limit future emissions and slow the
temperature increase.

immediate cause of the record-breaking warmth is a strong El Niño
weather pattern, in which the ocean releases immense amounts of heat
into the atmosphere. But temperatures are running so far ahead of those
during the last strong El Niño, in 1997 and 1998, that scientists said
the records would not be occurring without an underlying trend caused by
human emissions of greenhouse gases.

The bottom line is that the world is warming,” said Jessica Blunden, a climate scientist with NOAA, in Asheville, N.C. Source: NYTimes