Factors intrinsic to Earth and its atmosphere that influence climate include plate tectonic movements, volcanism, albedo, atmospheric composition, ocean circulation, and climate anomalies spread over long distances.
The June 12, 1991 eruption of Mount Pinatubo in the Phillipines spewed vast amounts of sulfur dioxide and fine particles in the upper atmosphere. These materials reflected enough sunlight to lower global temperatures by as much as 0.5°C for nearly 2 years.
MethaneLast Updated on 2012-09-30 at 20:52
Methane is a simple chemical molecule, having the formula CH4. It is the the principal component of natural gas. Complete combustion of methane... More »
Greenhouse gasLast Updated on 2012-09-22 at 11:56
A greenhouse gas is one of several gases that can absorb and emit longwave (infrared) radiation in a planetary atmosphere. This phenomenon is often termed the greenhouse... More »
Pacific Coastal Mountain icefields and tundraLast Updated on 2012-08-21 at 22:15
The Pacific Coastal Mountain Icefields and Tundra ecoregion consists of a steep, very rugged range of mountains that stretches from the Kenai Penninsula along the Gulf of... More »
Methane: Greenhouse Gas Enemy Number TwoLast Updated on 2012-08-21 at 16:08
Methane (CH4) is second only to carbon dioxide (CO2) in its contribution to the greenhouse effect and accounts for about 15% of anthropogenic warming.  Moreover, sudden... More »