Sunday, 4 April 2010

Global Temperature Changes Rapidly

The earth is warming up continuously. In the past 30 years Global surface temperature has increased ˜0.2°C per decade due to global warming. The temperature in 1998, on the contrary, was lifted 0.2°C above the trend line by a “super El Niño”, the strongest El Niño of the past century. Record, or near record, warmth in 2005 is notable, because global temperature did not receive a boost from an El Niño in 2005.

The National Geographic Channel aired a documentary in Britain on August 9, 2003 titled What’s up with the weather. It noted that the levels of carbon dioxide for example, were currently at their highest levels in the past 450,000 years.

If we turned to conclusion that global warming is a real climate change, not an artifact due to measurements in urban areas, is confirmed by surface temperature change inferred from borehole temperature profiles at remote locations, the rate of retreat of alpine glaciers around the world, and progressively earlier breakup of ice on rivers and lakes (10). The geographical distribution of warming

1 comment:

  1. The recent global warming may have occurred due to the last three intense solar cycles, excluding SC24. Yet, if the past warming cycles preceded the rise in CO2, how much of today's atmospheric CO2 should be attributed to warming, say, 800 years ago? Most historical climate deniers argue that all the 100 ppm increase in atmospheric CO2 is of recent origin. Yet, it seems that the ratio of anthropogenic CO2 to natural sources have remained steady. This should not happen unless the oceans are, in fact, still outgassing CO2 in response to a warming pulse from years ago.