Global warming "heretics" have today announced that:
THE AVERAGE TEMPERATURE HAS STOPPED RISING Since 1998 - more than a decade - the record, as determined by observations from satellites and balloon radiosondes, shows no discernible warming.
Heretics who print or repeat these findings are to be burned at the stake on the next market day.
The year 1998 was exceptionally warm because of a strong El Nino event, while 2008 was unusually cold because of La Nina conditions. Variability from year to year is expected, and picking a specific warm year to start an analysis (or a cold one to end with) is "cherry-picking". If you start in 1997 or 1999 you will see a sharp rise. Furthermore, while the UK Met Office regards 1998 as the hottest year yet, Nasa thinks it was 2005 (they use the same data but interpret it differently). According to the Met Office, the 10 warmest years in the modern record have all occurred since 1997.
Man made Global Warming Preachers:
THE EARTH HAS BEEN WARMER IN THE RECENT PAST
Arctic ice extent 2008
Satellite images show the extent of Arctic ice
The beginning of the last Millennium saw a "Medieval Warm Period" when temperatures, certainly in Europe, were higher than they are now. Grapes grew in northern England. Ice-bound mountain passes opened in the Alps. The Arctic was warmer in the 1930s than it is today.
Computer models cannot project the influence of clouds, Computer models are the main way of projecting future climate change. But despite decades of development they are unable to model all the processes involved; for example, the influence of clouds, the distribution of water vapour, the impact of warm seawater on ice-shelves and the response of plants to changes in water supply. Climate models follow the old maxim of "you put garbage in, you get garbage out".
Computer models predict that the lower levels of the atmosphere, the troposphere, should be warming faster than the Earth's surface. Measurements show the opposite. So either the models are failing, or one set of measurements is flawed, or there are holes in our understanding of the science.
Unfortunately for man-made Global Warming preachers:
CLIMATE IS MAINLY INFLUENCED BY THE SUN
Earth history shows climate has regularly responded to cyclical changes in the Sun's energy output. Any warming we see can be attributed mainly to variations in the Sun's magnetic field and solar wind.
CO2 RISES AFTER A TEMPERATURE INCREASE NOT BEFORE
Scientists studying ice core
Ice core data shows a pattern of temperature rises
Ice-cores dating back nearly one million years show a pattern of temperature and CO2 rise at roughly 100,000-year intervals. But the CO2 rise has always come after the temperature rise, not before, presumably as warmer temperatures have liberated the gas from oceans.
WATER VAPOUR IS BIGGER GREENHOUSE GAS THAN CO2
Condensation on glass
Water vapour concentrations are rising.