NASA GISS, NOAA and the UK Met Office’s Hadley Centre have all previously carried out independent studies, which reached the conclusion world average land temperatures have risen by (close to) 1 degree Celsius over the second half of the 20th century. Now a new study, this time conducted by a team of University of California Berkeley researchers, has investigated 1.6 billion meteorological records. The data come from 5 times as many stations as in the previous studies. Again, however, researchers find exactly the same quantitative results for global temperature rise.
For more information visit Berkeley Earth