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    Assessing recent warming using instrumentally homogeneous sea surface temperature records

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        Abstract

        Instrumentally homogeneous SST records show a cooling bias in composite SST products and validate recent NOAA recent record revision.

        Abstract

        Sea surface temperature (SST) records are subject to potential biases due to changing instrumentation and measurement practices. Significant differences exist between commonly used composite SST reconstructions from the National Oceanic and Atmospheric Administration’s Extended Reconstruction Sea Surface Temperature (ERSST), the Hadley Centre SST data set (HadSST3), and the Japanese Meteorological Agency’s Centennial Observation-Based Estimates of SSTs (COBE-SST) from 2003 to the present. The update from ERSST version 3b to version 4 resulted in an increase in the operational SST trend estimate during the last 19 years from 0.07° to 0.12°C per decade, indicating a higher rate of warming in recent years. We show that ERSST version 4 trends generally agree with largely independent, near-global, and instrumentally homogeneous SST measurements from floating buoys, Argo floats, and radiometer-based satellite measurements that have been developed and deployed during the past two decades. We find a large cooling bias in ERSST version 3b and smaller but significant cooling biases in HadSST3 and COBE-SST from 2003 to the present, with respect to most series examined. These results suggest that reported rates of SST warming in recent years have been underestimated in these three data sets.

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        Most cited references 34

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        Improvements to NOAA’s Historical Merged Land–Ocean Surface Temperature Analysis (1880–2006)

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          Daily High-Resolution-Blended Analyses for Sea Surface Temperature

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            GLOBAL SURFACE TEMPERATURE CHANGE

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              Author and article information

              Affiliations
              [1]Energy and Resources Group, University of California, Berkeley, Berkeley, CA 94720, USA.
              [2]Berkeley Earth, Berkeley, CA 94705, USA.
              [3]Department of Chemistry, University of York, York, U.K.
              [4]Independent Researcher, Montreal, Quebec, Canada.
              [5]Department of Environmental Science and Policy, George Mason University, Fairfax, VA 22030, USA.
              [6]NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.
              Author notes
              [*]Corresponding author. Email: hausfath@123456berkeley.edu
              Journal
              Sci Adv
              Sci Adv
              SciAdv
              advances
              Science Advances
              American Association for the Advancement of Science
              2375-2548
              January 2017
              04 January 2017
              : 3
              : 1
              5216687
              1601207
              10.1126/sciadv.1601207
              Copyright © 2017, The Authors

              This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license, which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.

              Categories
              Research Article
              Research Articles
              SciAdv r-articles
              Climate Change
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              Florcloven Cruz
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