" By 2100, global average temperatures will probably be 5 to 12 standard deviations above the Holocene temperature mean. In other words: We are catapulting ourselves way out of the Holocene. Just looking at the known drivers (climate forcings) and the actual temperature history shows it directly, without need for a climate model: without the increase in greenhouse gases caused by humans, the slow cooling trend would have continued. Thus virtually the entire warming of the 20th Century is due to man. This May, for the first time in at least a million years, the concentration of carbon dioxide in our atmosphere has exceeded the threshold of 400 ppm. If we do not stop this trend very soon, we will not recognize our Earth by the end of this century."
Posted on: Tue, 17 Sep 2013 00:18:24 +0000
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