Global climate facts

Virtually all scientists agree that the Earth has warmed a small amount since the year 1000 or, if you choose, since 1850, when instrumented temperature records became reasonably accurate and distributed in key areas of the world. 
An increasing number believe that any warming is so small it is indistinguishable from the noise in the environmental data sets, and that the data have not been properly adjusted for such things as urban heat island effects (are the city temps warmer than the suburbs where you live? Has the city grown since 1850? 
have the runways increased near the temp gauge at your airport since 1920?), and instrument calibration. 
This is particularly true of the global data set, even though urbanization has caused regional increases in temperature that exceed those measured on a global scale, leading to urban heat islands as much as 12oC hotter than their surronundings. 
Most scientists agree that warming is better than cooling and many believe CO2 provides important enhancements for forests and agriculture, even while also believing we should not be fouling our nest.
Our site makes every effort to present the true science of climate change. When the news broke of the Arctic ice being at its 30 year low in 2007, the same source (U. of Illinois) reported the Antarctic at its record high, but this was not reported in the media. 
To show the imbalance, as one reads in the popular press, we have created a companion site that presents the evidence for global cooling, just as most newspapers and alarmists present only the science that supports warming. There are many reasons to be cautious about accepting CO2 as the causative agent if there really is warming. This is highlighted by 2 papers published in March 2008. Scafetta and West showed that up to 69% of observed warming is from the sun and Ramanthan and Carmichael show that soot has 60% of the warming power of CO2. They claim both factors are underappreciated by IPCC. Many scientists believe the temperature changes are more dependent on the sun than CO2, similar to the relationship in your home with your furnace. The soot may well explain much of the Arctic melting, as it has recentrly for Asian glaciers.
It is generally accepted that the Earth has been much warmer than today, for example, in the time of the dinosaurs (the mid-cretaceous period) when the CO2 was 2 to 4 times greater than today (NOAA). More recently, in the prior period between ice ages, just 125,000 years ago, the Earth also was much warmer than today and the sea level much higher - by about 13 to 20 feet (4 to 6 meters) (IPCC). The primary driver of the past climate shifts is believed to be orbital mechanics and solar variability, with some contribution from Earth geophysical processes, such as volcanic eruptions. It is also known that mankind's contribution to CO2 is just a small percent (3%) of the total amount and that the total is very small - there is 23.6 times more argon (0.00934) in the atmosphere than CO2 (0.000407. The Earth's ability to absorb CO2 has apparently been underestimated and the climate models need revision per the 31 December 2009 publication of work by Wolfgang Knorr that shows "No rise of atmospheric carbon dioxide fraction in the las 160 years"(a seminal study). Lastly, we know that the Earth's temperature and the level of CO2 rise and fall roughly together, but it is not clear (not proven) whether this is cause and effect by either variable. In a first attempt (Hadley-chart) to use a CO2 - based model to predict temperatures, the results are not impressive at all and are exactly opposite observations.
Source:
http://www.climatechangefacts.info/#Fact