It’s the amount of warming past pre-industrial times that the IPCC says we should try to avoid this Century in order to prevent the worst consequences of human-caused climate change. It’s the so-called safe limit, even though there’s nothing really safe about it and we should probably be aiming more for a below 1.5 C target.
It’s the amount of warming between pre-industrial times and, according to the latest data from NASA, the first half of 2015. In other words, temperatures during the first six months of 2015 are now at least halfway toward freeing some of the nastiest climate monsters in the closet.
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According to NASA GISS, June of 2015 was tied with 1998 as the hottest of any June in the entire 135 year global climate record. Coming in at +0.76 C above NASA’s 20th Century average…
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