Summary. The Intergovernmental Panel on Climate Change issued Part 1 of its Fifth Assessment Report, “The Physical Science Basis”, on
- Governments and organizations nominate authors, who are then selected by the organizers of the Working Groups (here called “Parts”)
- The selected authors prepare a first draft of the Part;
- The first draft is reviewed by others;
- Authors prepare a second draft considering reviewers’ comments;
- The second draft is reviewed by governments and experts
- A final draft is prepared considering reviewers’ comments;
- Governments review the final draft; and
- The final draft is approved and accepted by the IPCC, and released.
Increase in the net rate of absorption of energy per unit area of the earth (Radiative Forcing, in watts per square meter) due to humanity’s activities for the years 1950, 1980 and 2011, relative to the value for 1750. The horizontal black lines extending left and right from the tips of the red bars are estimates of the error in each value. Values for the mean increase, and the lower and upper extents of the error (inside square brackets) are shown to the right of each bar in red. These results are the sums of the contributions, positive and negative, described in the paragraph preceding this graphic.
Changes in global mean surface temperature in ºC (top) and global mean sea level rise in m (bottom) for the two time periods shown, referenced to the period 1986-2005. The “likely range” gives confidence limits for a 5%-95% interval.
For temperature, corresponding values for ºF are exemplified as 1ºC =1.8ºF, 2.0ºC = 3.6ºF, and 3.7ºC = 6.7ºF.
© 2013 Henry Auer