- create a single comprehensive raw data set in a common format for existing surface (land only) temperature data,
- review existing data and methods of error analyses to assess their advantages and limitations,
- develop improved and alternative methods of analysis to overcome some of the limitations identified, and
- publish the new global surface temperature record, and its analysis, in order to provide a basis for all parties to examine the data for further study.
Source: BEST; http://www.berkeleyearth.org/
shows specific continental, overall global, global land, and global ocean temperature simulations from climate models, compared to actual observations (black line). The pale blue simulations omit man-made contributions to global warming, such as emissions of greenhouse gases. It is seen that in none of the regions or global cases do the pale blue simulations reproduce the temperature observations beyond about 1950, but do satisfactorily trace the temperature data before 1950, before emissions became significant. The pink simulations include man-mad contributions to global warming. These simulations satisfactorily trace the observed temperature record over the entire time period from 1910 to 2005. It may be concluded from these comparative simulations that man-made emissions of greenhouse gases are highly likely to be responsible for the increase in global temperature since about 1950.
© 2011 Henry Auer