April 2014 Global Surface (Land+Ocean) and Lower Troposphere Temperature Anomaly Update

Initial Notes: This is the first monthly update to include lower troposphere temperature (TLT) anomaly data. To make this post as timely as possible, only GISS LOTI and the two lower troposphere temperature datasets are for the most current month. The NCDC and HADCRUT4 data lag one month. About these ads

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On the Differences and Similarities between Global Surface Temperature and Lower Troposphere Temperature Anomaly Datasets

UPDATE: See the correction at the end of the post, which pertained to the discussion of the trend maps in Figures 13 and 14. I’ve crossed out the paragraph between those illustrations that was incorrect. And I’ve corrected a good number of typos in the text and illustrations. Thanks to all who found them. #…

Why Aren’t Global Surface Temperature Data Produced in Absolute Form?

The title question often appears during discussions of global surface temperatures. That is, GISS, Hadley Centre and NCDC only present their global land+ocean surface temperatures products as anomalies. The questions is: why don’t they produce the global surface temperature products in absolute form? In this post, I’ve included the answers provided by the three suppliers.…