New paper finds a large warming bias in N. Hemisphere temperatures from ‘non-valid’ station data – Published in Journal of Atmospheric and Solar-Terrestrial Physics

A new paper published in the Journal of Atmospheric and Solar-Terrestrial Physics finds that the quality of Northern Hemisphere temperature data has significantly & monotonically decreased since the year 1969, and that the continued use of ‘non-valid’ weather stations in calculating Northern Hemisphere average temperatures has created a ‘positive bias’ and “overestimation of temperatures after including non-valid stations.”

The paper appears to affirm a number of criticisms of skeptics that station losses, fabricated/infilled data, and positively-biased ‘adjustments’ to temperature data have created a positive skew to the data and overestimation of warming during the 20th and 21st centuries.