The World Meteorological Organization (WMO) reports that 2015 will set (or already has set) a variety of worrisome climate records due to manmade carbon pollution:
- 2011-2015 “have been the warmest five-year period on record, with many extreme weather events – especially heatwaves – influenced by climate change.”
- 2015 is set to be the hottest year on record by far, with the highest ocean surface temperatures ever monitored.
- It’s “probable” that total global warming since the industrial revolution will cross the 1°C (1.8°F).
- The 3-month average of Northern Hemisphere CO2 levels “crossed the 400 parts per million barrier for the first time.”
“This is all bad news for the planet,” noted WMO Secretary-General Michel Jarraud. In particular, crossing the 1°C (1.8°F) means we are halfway to the 2°C (3.6°F) threshold that world’s top scientists and governments have identified as the defense line past which climate impacts become very dangerous and then catastrophic.
Last week, NASA data made clear that 2015 was going to crush the record for hottest year. On top of the underlying human-caused warming trend is the short-term warming caused by a very strong El Niño. As the top chart shows, global temperature records tend to be set in El Niño years, and those records just get higher and higher over time because of carbon pollution.
Indeed, last month was not merely the hottest October — by far — in the 135-year temperature record of NASA. It was the highest divergence from the mean temperature ever recorded in the 1,600-month temperature record of NASA. NOAA reported that October 2015 bear the previous record set in October 2011 by a whopping 0.31°F (0.17°C).
As this NOAA chart shows, the warming since January is so high that it is now a certainty 2015 will smash the record for hottest year set just last year:
Finally, the WMO notes that all this warming is having an affect on our weather: “Scientific assessments have found that many extreme events in the 2011-15 period, especially those relating to extreme high temperatures, have had their probabilities substantially increased as a result of anthropogenic climate change – by a factor of 10 or more in some cases – with more than half the events scientifically assessed showing an anthropogenic climate change signal of some description in their risk.”
The hotter we let it get, the more extreme everyone’s weather will become.