AbstractThe ERA-20C reanalysis (1900-2010) assimilates surface pressure and marine wind observations. The reanalysis is single-member, and the background errors are spatio-temporally varying, derived from an ensemble. The atmospheric general circulation model uses the same configuration as the control member of the ERA-20CM ensemble, forced by observationally-based analyses of sea-surface temperature, sea-ice cover, atmospheric composition changes and solar forcing. The resulting climate trend estimations resemble ERA-20CM for temperature and the water cycle. The ERA-20C water cycle features stable precipitation minus evaporation global averages, and no spurious jumps or trends. The assimilation of observations adds realism on synoptic time-scales as compared to ERA-20CM in regions that are sufficiently well observed. Comparing to night-time ship observations, ERA-20C air temperatures are 1 K colder. Generally, the synoptic quality of the product and the agreement in terms of climate indices with other products improve with the availability of observations. The MJO mean amplitude in ERA-20C is larger than in 20CRv2c throughout the century, and in agreement with other reanalyses such as JRA-55. A novelty in ERA-20C is the availability of observation feedback information. As shown, this information can help assess the product?s quality on selected time-scales and regions.
%0 Journal Article
%1 Poli2016ERA20C
%A Poli, Paul
%A Hersbach, Hans
%A Dee, Dick P.
%A Berrisford, Paul
%A Simmons, Adrian J.
%A Vitart, Frédéric
%A Laloyaux, Patrick
%A Tan, David G. H.
%A Peubey, Carole
%A Thépaut, Jean-Noël
%A Trémolet, Yannick
%A Hólm, El\'ıas V.
%A Bonavita, Massimo
%A Isaksen, Lars
%A Fisher, Michael
%D 2016
%I American Meteorological Society
%J J. Climate
%K era dataset 20CR
%R 10.1175/jcli-d-15-0556.1
%T ERA-20C: An atmospheric reanalysis of the 20th century
%U http://dx.doi.org/10.1175/jcli-d-15-0556.1
%X AbstractThe ERA-20C reanalysis (1900-2010) assimilates surface pressure and marine wind observations. The reanalysis is single-member, and the background errors are spatio-temporally varying, derived from an ensemble. The atmospheric general circulation model uses the same configuration as the control member of the ERA-20CM ensemble, forced by observationally-based analyses of sea-surface temperature, sea-ice cover, atmospheric composition changes and solar forcing. The resulting climate trend estimations resemble ERA-20CM for temperature and the water cycle. The ERA-20C water cycle features stable precipitation minus evaporation global averages, and no spurious jumps or trends. The assimilation of observations adds realism on synoptic time-scales as compared to ERA-20CM in regions that are sufficiently well observed. Comparing to night-time ship observations, ERA-20C air temperatures are 1 K colder. Generally, the synoptic quality of the product and the agreement in terms of climate indices with other products improve with the availability of observations. The MJO mean amplitude in ERA-20C is larger than in 20CRv2c throughout the century, and in agreement with other reanalyses such as JRA-55. A novelty in ERA-20C is the availability of observation feedback information. As shown, this information can help assess the product?s quality on selected time-scales and regions.
@article{Poli2016ERA20C,
abstract = {AbstractThe ERA-20C reanalysis (1900-2010) assimilates surface pressure and marine wind observations. The reanalysis is single-member, and the background errors are spatio-temporally varying, derived from an ensemble. The atmospheric general circulation model uses the same configuration as the control member of the ERA-20CM ensemble, forced by observationally-based analyses of sea-surface temperature, sea-ice cover, atmospheric composition changes and solar forcing. The resulting climate trend estimations resemble ERA-20CM for temperature and the water cycle. The ERA-20C water cycle features stable precipitation minus evaporation global averages, and no spurious jumps or trends. The assimilation of observations adds realism on synoptic time-scales as compared to ERA-20CM in regions that are sufficiently well observed. Comparing to night-time ship observations, ERA-20C air temperatures are 1 K colder. Generally, the synoptic quality of the product and the agreement in terms of climate indices with other products improve with the availability of observations. The MJO mean amplitude in ERA-20C is larger than in 20CRv2c throughout the century, and in agreement with other reanalyses such as JRA-55. A novelty in ERA-20C is the availability of observation feedback information. As shown, this information can help assess the product?s quality on selected time-scales and regions.},
added-at = {2018-06-18T21:23:34.000+0200},
author = {Poli, Paul and Hersbach, Hans and Dee, Dick P. and Berrisford, Paul and Simmons, Adrian J. and Vitart, Fr\'{e}d\'{e}ric and Laloyaux, Patrick and Tan, David G. H. and Peubey, Carole and Th\'{e}paut, Jean-No\"{e}l and Tr\'{e}molet, Yannick and H\'{o}lm, El\'{\i}as V. and Bonavita, Massimo and Isaksen, Lars and Fisher, Michael},
biburl = {https://www.bibsonomy.org/bibtex/267aa4daa2f600095cc54005eaee713ed/pbett},
citeulike-article-id = {13974342},
citeulike-linkout-0 = {http://journals.ametsoc.org/doi/abs/10.1175/JCLI-D-15-0556.1},
citeulike-linkout-1 = {http://dx.doi.org/10.1175/jcli-d-15-0556.1},
doi = {10.1175/jcli-d-15-0556.1},
interhash = {fce2119f62604fcbe64e732a654d8f0e},
intrahash = {67aa4daa2f600095cc54005eaee713ed},
journal = {J. Climate},
keywords = {era dataset 20CR},
posted-at = {2016-03-09 09:26:42},
priority = {2},
publisher = {American Meteorological Society},
timestamp = {2018-06-22T18:36:14.000+0200},
title = {ERA-20C: An atmospheric reanalysis of the 20th century},
url = {http://dx.doi.org/10.1175/jcli-d-15-0556.1},
year = 2016
}