Sentences with phrase «before most recent warming»
Analysis has shown that most the glacial retreat at Kilimanjaro occurred before 1953 (and therefore before most recent warming) and that the retreat has more to do with moisture in the air than with global warming.
http://www.climate-skeptic.com/ Not exact matches
About 120,000 years ago, in the warm period that preceded our most recent ice age, modern type Homo sapiens was probably walking around Africa with dark skin — and sporting a brain that was three times larger than before the first ice age chatters 2.5 million years ago.
This illustration, using figures from the most recent 2014 IPCC report, depicts that because only 800 gigatons of CO2 can be emitted by humanity before creating a 66 % probability that a 2 degree C warming limit will be exceeded and humans have by 2011 already emitted 530 gigatons of CO2, there are only 270 gigatons of CO2 that may be emitted after 2011 to limit warming to 2 degrees C. (For a more detailed explanation of these figures see, Pidcock 2013)
The actual amount of emissions reductions that are needed between now and 2020 is somewhat of a moving target depending on the level of uncertainty that society is willing to accept that a dangerous warming limit will be exceeded, the most recent increases in ghg emissions rates, and assumptions about when global ghg emissions peak before beginning rapid reduction rates.
Before the most recent major warming out of the last major ice age, the range of warming and cooling was much more severe.
So, what if we use the statistics BEFORE the last 50 years to come up with a model of temperature variability, and then see if that statistical model can «predict» the strong warming over the most recent 50 year period?
About 120,000 years ago, in the warm period that preceded our most recent ice age, modern type Homo sapiens was probably walking around Africa with dark skin — and sporting a brain that was three times larger than before the first ice age chatters 2.5 million years ago.
This «overall warming trend» started long before there were any human CO2 emissions to speak of (as we have been emerging from the Little Ice Age) and has continued through the most recent warming.