Quote:
Quote by: Keith Hamburger  As far as I can tell, no one read your source. From that ...
which supports the assertion that there was cooling during the period of the most rapid period of increase of CO2. The article attempts to debunk the idea that there were widespread scientific predictions about additional and extreme global cooling imminent, not that the data doesn't indicate what was claimed in the post to which you were responding.
Try again. Explain why temperatures decreased during the 40s and 50s when carbon content in the atmosphere was increasing so rapidly.
Keith |
The explanation is given in one of my other sources,
click here. Allow me to quote
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After rising rapidly during the first part of the 20th century, global average temperatures did cool by about 0.2°C after 1940 and remained low until 1970, after which they began to climb rapidly again.
The mid-century cooling appears to have been largely due to a high concentration of sulphate aerosols in the atmosphere, emitted by industrial activities and volcanic eruptions. Sulphate aerosols have a cooling effect on the climate because they scatter light from the Sun, reflecting its energy back out into space.
The rise in sulphate aerosols was largely due to the increase in industrial activities at the end of the second world war. In addition, the large eruption of Mount Agung in 1963 produced aerosols which cooled the lower atmosphere by about 0.5°C, while solar activity levelled off after increasing at the beginning of the century
The clean air acts introduced in Europe and North America reduced emissions of sulphate aerosols. As levels fell in the atmosphere, their cooling effect was soon outweighed by the warming effect of the steadily rising levels of greenhouse gases. The mid-century cooling can be seen in this NASA/GISS animation, which shows temperature variation from the annual mean for the period from 1880 through 2006. The warmest temperatures are in red.
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Is that satisfactory to your needs?