Tuesday, October 9, 2007

Global Warming

Good Tuesday Morning,
I would like to start this topic up with your opinions, Do you believe in the Global Warming Theory?
  • I do not believe in Global Warming
  • I believe that the Ice Caps are melting because of natural causes
  • I believe that we can't know the real averages since weather recording started in the 1800s...
  • I believe we would have to go back to the beginning of the world to find out the real Temperature averages.

Below is from the following website: www.evangelsociety.org/sherk/wwjd.html

"...The Historical Record
The observed climate record of the past century represents one of the major flaws in the global warming theory. During the 20th century human emissions of CO2 grew rapidly, with most of that increase following the Second World War. According to the theory, this should have caused temperatures to rise over the past century, with most of that increase coming after World War II. Surface measurements reveal that the earth's temperature rose approximately 0.6�C during the 20th century, but this warming does not match the theoretical predictions. Most of the warming, 0.4�C, took place before the early 1940's, before the release of most man-made CO2 into the atmosphere. Then, until the late 1970's, while human emissions of CO2 rose rapidly, the earth actually cooled approximately 0.1�C, only to rise by another 0.3�C by the end of the century. Surface temperature records reveal almost no correlation between human CO2 emissions and temperature increases. The majority of the temperature increase took place before CO2 levels rose substantially, then the temperature decreased while CO2 emissions rapidly rose, only to reverse the trend and slightly increase by the end of the century.(3) Understandably, the history of actual human CO2 emissions and the temperature record does little to support the global warming theory.

However, climatologists base this temperature record on surface measurements from ground stations. Scientists know that these records suffer from a systematic bias that tends to increase the temperature they record, the urban "heat island" effect. Many ground-monitoring stations are located in areas that have grown into major cities. The high volume of human activity, and asphalt, which tends to trap heat, that a city contains raises the temperature of a city several degrees above that of the surrounding countryside. Consequently, temperature measurements taken in or near a city are noticeably higher than those taken in a rural area, and this bias shows up in the surface record.(4)

Fortunately, for the past quarter century scientists have an alternative climate record unaltered by the heat island effect, the satellite record. Since 1979, satellites orbiting the globe have recorded the earth's temperature using instruments with an accuracy of �0.01�C. These more accurate satellite sensors show that, except for a one-year warming spike in 1998 caused by El Nino, the earth's average temperature did not rise between 1979 and 2000.(5) Temperature measurements from weather balloons corroborate these findings, which cast further doubt on the global warming theory. While atmospheric carbon dioxide has steadily risen, the most accurate measurements available show that the global temperature did not increase over the past two decades.

Still, the best records available suggest that global temperatures rose slightly over the past century. However, this is hardly unusual. Global temperatures naturally change, and have done so for thousands of years before the invention of the internal combustion engine. Over just the past millennia, global temperatures swung by several degrees. During the Middle Ages, in the medieval climate optimum, temperatures averaged one to two degrees higher than today's levels. During this time, Greenland was actually green, and supported vibrant Viking settlements. Following this warm period, and lasting into the mid 1800's, came the so-called "Little Ice Age," during which global temperatures dropped noticeably below today's levels. Since the 1850's, temperatures have risen as the earth left the mini-ice age.(6) These climate swings occurred as a result of natural processes, long before humans began emitting significant amounts of CO2. The fact that the earth has warmed by half a degree centigrade over the past century hardly represents an unusual historical occurrence or evidence that human activity has altered the climate..."   

PLEASE ENTER YOUR OPINION/BELIEF! I will try to updated Weather Cast Plus this Afternoon, I have been busy.



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