The most crucial statements from the IPCC (Intergovernmental Panel on Climate Change) report

More precise and detailed than ever, the fourth UN climate report lists the causes and effects of GLOBAL WARMING intensified by mankind

  1. Eleven out of the past twelve years are among the warmest since 1850 when temperatures began being recorded.

  2. In the northern hemisphere, the average temperature of the second half of the 20th century is higher than the average temperature in any other 50 years period during the past 500 years. This is the highest average temperature of at least the last 1300 years.

  3. The major reason for global warming since the middle of the 20th century is the greenhouse effect intensified by mankind.

  4. Since the 1960s, the oceans of the world have warmed to a depth of 3000 meters. So far the oceans have absorbed about 80 percent of the warmth that has been added to the climate system.

  5. Within the 20th century the sea level rose by a total of 17 centimetres.

  6. A decrease of ice in Antarctica and Greenland is among the reasons for a rise in the sea level. In this region a number of glaciers are now melting faster.

  7. Mountain glaciers and snow cover are diminishing in the northern as well as in the southern hemisphere.

  8. Temperatures of the upper layers of the Arctic?s permafrost soil have increased by up to three degrees Celsius (37.4 degrees Fahrenheit) since the 1980s.

  9. Data measured by satellites and balloons show that it is not only the air layers at ground level which are warming but also the air layers at higher levels.

  10. Monitoring has shown that there is a considerable increase in rainfall in the eastern parts of North and South America, Northern Europe and Central Asia.

  11. The Sahel, the Mediterranean region, the southern parts of Africa as well as parts of southern Asia will experience more droughts.

  12. Cold days, cold nights and freeze have become rare whereas hot days, hot nights and heat waves now occur more frequently.

  13. There are numerous indications that the intensity of tropical storms in the northern Atlantic has increased. This comes along with the increased surface temperatures of the tropical oceans.

  14. Within the following twenty years temperatures will rise by 0.2 degrees Celsius (32.4 degrees Fahrenheit) every ten years.

  15. Even if the concentration of greenhouse gases in the year 2000 had been maintained, there would still be an increase in temperature of 0.1 degrees Celsius (32.2 degrees Fahrenheit) per decade.

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