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CLASSnmat: A global night marine air temperature data set, 1880–2019

Cornes, Richard C. ORCID: https://orcid.org/0000-0002-7688-4485; Kent, Elizabeth.C. ORCID: https://orcid.org/0000-0002-6209-4247; Berry, David.I.; Kennedy, John J.. 2020 CLASSnmat: A global night marine air temperature data set, 1880–2019. Geoscience Data Journal, 7 (2). https://doi.org/10.1002/gdj3.100

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Abstract/Summary

A new data set of Night Marine Air Temperature (NMAT) is presented that builds on the HadNMAT2 data set, which was released in 2013. In a similar manner to HadNMAT2, the new data set (CLASSnmat) provides uninterpolated, monthly global values at a 5° resolution back to 1880. In addition to being extended to the end of 2019, four main developments are made in CLASSnmat: (1) the NMAT values are extracted from the most recent version of the International Comprehensive Ocean‐Atmosphere Data Set (ICOADS Release 3) and a revised method of eliminating duplicated observations is used; (2) values of NMAT are adjusted to 2m and 20m heights in addition to the 10 m height used in HadNMAT2; (3) a refinement is made to the corrections necessary during World War 2, which uses more of the NMAT observations and hence results in a more extensive spatial coverage for this period than was possible in HadNMAT2; (4) an updated gridding method is used that allows for an improved propagation of uncertainty from the individual NMAT values through to the gridded estimates. In this paper, the method used to construct CLASSnmat (version 1.0.0.0) is described.

Item Type: Publication - Article
Digital Object Identifier (DOI): https://doi.org/10.1002/gdj3.100
ISSN: 2049-6060
Date made live: 11 Nov 2020 10:46 +0 (UTC)
URI: https://nora.nerc.ac.uk/id/eprint/528926

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