Archive for May 2021
Quaternary’s climate and the appearance of homo
2.7 million years ago permanent ice showed up in the Northern hemisphere and the ice cap on Greenland started to build up. It was the same time the genus homo…
Read More50 million years of climate cooling
As we have seen in The earth’s thermostat chemical weathering is an important mechanism in regulating CO2 concentrations and thus the climate on a long term range. The rate of…
Read MoreTemperature during the last ice age
The question how much it was colder on earth during the last Ice Age is being re-opened. This question has preoccupied climate scientists for decades. Earlier estimates assumed that the…
Read MoreThe earth’s thermostat
A chemical thermostat is active on our planet. It has ensured for ages that the natural variations of the climate do not become too extreme. As we have seen, these…
Read MoreNatural variations of the earth’s climate
The earth’s climate has changed naturally, including short and long term variations. There have been trends over millions of years as well as short-term fluctuations in the range of decades…
Read More2.000 years of climate history of CO2
If one looks at changes of the concentration of CO2 in the atmosphere during the last 2000 years, one thing is particularly striking: The amount of CO2 was relatively constant…
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