Monday, February 05, 2007
Global Warming - and geology
Here's a "Brief History of Ice Ages and Warming", with some charts and graphs, along with a section on each of the following topics.
- Causes of Global Climate Change
- Playing with Numbers
- A Matter of Opinion
- Unraveling the Earth's Temperature Record
- Stopping Climate Change
- Causes of Global Climate Change
- Playing with Numbers
- A Matter of Opinion
- Unraveling the Earth's Temperature Record
- Stopping Climate Change
At "GeoCraft.com", Monte Hieb and Harrison Hieb have provided a relatively easy to understand overview of "global warming":
"Global warming alarmists maintain that global temperatures have increased since about A.D. 1860 to the present as the result of the so-called 'Industrial Revolution,'-- caused by releases of large amounts of greenhouse gases (principally carbon dioxide) from manmade sources into the atmosphere causing a runaway 'Greenhouse Effect.'
Was man really responsible for pulling the Earth out of the Little Ice Age with his industrial pollution? If so, this may be one of the greatest unheralded achievements of the Industrial Age!
Unfortunately, we tend to overestimate our actual impact on the planet. In this case the magnitude of the gas emissions involved, even by the most aggressive estimates of atmospheric warming by greenhouse gases, is inadequate to account for the magnitude of temperature increases. So what causes the up and down cycles of global climate change?
Causes of Global Climate Change
Climate change is controlled primarily by cyclical eccentricities in Earth's rotation and orbit, as well as variations in the sun's energy output.
'Greenhouse gases' in Earth's atmosphere also influence Earth's temperature, but in a much smaller way. Human additions to total greenhouse gases play a still smaller role, contributing about 0.2% - 0.3% to Earth's greenhouse effect."
