Tuesday, August 2, 2016

2016 Record Breaking Temperatures Globally ...... Again

This image released by NASA’s Earth Observatory Team from data collected by the Moderate Resolution Imaging Spectroradiometer (MODIS), an instrument on NASA’s Terra and Aqua satellites, shows the land surface temperature as observed by MODIS in Asia between April 15 to April 23, 2016. Yellow shows the warmest temperatures. 
 This image released by NASA’s Earth Observatory Team from data collected by the Moderate Resolution Imaging Spectroradiometer (MODIS), an instrument on NASA’s Terra and Aqua satellites, shows the land surface temperature as observed by MODIS in Asia between April 15 to April 23, 2016. Yellow shows the warmest temperatures.

But it’s just happenstance that the calendar year begins in January, and so it’s also informative to compare all yearlong periods. In doing so, it becomes clear that we’re living in astonishingly hot times.

June 2015 through May 2016 was the hottest 12-month period on record. That was also true of May 2015 through April 2016, and the 12 months ending in March 2016. In fact, it’s true for every 12 months going all the way back to the period ending in September 2015, according to global surface temperature data compiled by Kevin Cowtan and Robert Way. We just set the record for hottest year in each of the past 9 months.


Running 12-month average global surface temperature using data compiled by Kevin Cowtan and Robert Way.

Running 12-month average global surface temperature using data compiled by Kevin Cowtan and Robert Way. Illustration: Dana Nuccitelli

These record temperatures have been assisted, but not caused by, a very strong El Niño event, which brought warm water to the ocean surface, temporarily warming global surface temperatures. But today’s temperatures are only record-setting because the El Niño was superimposed on top of human-caused global warming.

Global surface temperatures are now more than 0.3°C hotter than they were in 1997–1998. That’s a remarkable rise over just 18 years, in comparison to the 1°C the Earth’s average surface temperatures have risen since the Industrial Revolution began.

This has all happened during a time when ‘no significant warming in 18 years’ has been one of the rallying cries of climate denial. In reality, when we compare apples to apples – El Niño years to El Niño years – we’ve seen more than 0.3°C global surface warming over the past 18 years, which is in line with climate model predictions.

2016 remains on track to break that record for the hottest calendar year, for an unprecedented third consecutive year, following record years in 2010 and 2005 as well.

With the Earth warming dangerously rapidly, at a rate 20–50 times faster than the fastest rate of natural global warming, one can’t help but wonder when the influence of the small minority of disproportionately powerful climate denial groups will wane.

195 countries pledged to curb their carbon pollution in the tremendously successful Paris climate negotiations, but climate denial is still predominant in one of America’s two political parties, and may be gaining foothold in other regions of the Anglosphere like the UK and Australia. Fortunately, many other countries like China, India, and Canada seem to be moving in the right direction with their climate and energy policies.

Now that climate denial’s bread and butter arguments are toast, November’s US elections will be critical in determining whether the country continues along the path of climate leadership established by President Obama, or allows the oil industry’s puppet party to continue peddling long-debunked myths in order to delay climate action and put future generations at risk.

With global warming constantly breaking temperature records, and dozens of scientific organizations warning policymakers that “To reduce the risk of the most severe impacts of climate change, greenhouse gas emissions must be substantially reduced,” We can no longer use ignorance as an excuse.                                                                                              

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