Conclusions from the UN climate panel

The fourth main report from the UN climate panel (IPCC) was published in 2007. It confirms the findings from previous reports.

The main points in this report are:

• The is no doubt what so ever that the climate  is  warming up.
• The main part of the observed increase of the world's average temperature since measurements begun in the middle of the 20th century is caused by the human generated activities producing greenhouse gasses.
• The global temperature and rising of the sea level will continue to rise in several centuries ahead independently of the reduction of the human generated emissions.
• The possibilty that the warm up effects are solely due to natural climates processes is less than 5%.
• The global temperature will increase between 1.1 degrees C and 2.9 degrees C  for the most optimistic scenario and between 2.4 degrees C and 6.9 degrees C  for the most pessmistic scenario.
• The sea level will probably rise between 18 and 59 cm.
• There is more that 90% possibility that heat waves and stong rainfalls will ocurr much more often.
• There is more that 66% possibility that serious drought, tropical cyclons and floods will ocurr much more often.
• Both the previous and the future emissins of green house gasses will ccontinue to contribute in the global warming and the rise of the sea levels in more than 1000 years ahead.
• The global concentrations of CO2, methane and nitrogen oxide have been increased considerably due to human activities since 1750. They lie now well over the pre industial values the last 650,000 years.