the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Interannual response of global ocean hindcasts to a satellite-based correction of precipitation fluxes
Abstract. We present a methodology to correct precipitation fluxes from the ECMWF atmospheric reanalysis (ERA-Interim) for oceanographic applications. The correction is performed by means of a spatially varying monthly climatological coefficient, computed within the period 1989–2008 by comparison between ERA-Interim and a satellite-based passive microwave precipitation product. ERA-Interim exhibits a systematic over-estimation of precipitation within the inter-tropical convergence zones (up to 3 mm d−1) and under-estimation at mid- and high- latitudes (up to −4 mm d−1). The correction has been validated within eddy-permitting resolution global ocean hindcasts (1989–2009), demonstrating the ability of our strategy in attenuating the 20-yr mean global EMP negative imbalance by 16%, reducing the near-surface salinity fresh bias in the Tropics up to 1 psu and improving the representation of the sea level interannual variability, with an SSH error decrease of 8%. The ocean circulation is also proved to benefit from the correction, especially in correspondence of the Antarctic Circumpolar Current, where the error in the near-surface current speed decreases by a 9%. Finally, we show that the correction leads to volume and freshwater transports that better agree with independent estimates.
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RC C144: 'Interannual response of global ocean hindcasts to a satellite-based correction of precipitation fluxes.', Anonymous Referee #1, 11 Apr 2012
- AC C610: 'Response to Referee 1 Comments', Andrea Storto, 19 Jun 2012
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RC C169: 'Interactive comment on “Interannual response of global ocean hindcasts to a satellite-based correction of precipitation fluxes” by A. Storto et al.', Anonymous Referee #2, 17 Apr 2012
- AC C612: 'Response to Referee 2 Comments', Andrea Storto, 19 Jun 2012
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EC C564: 'revision of manuscript', Pierre-Yves Le Traon, 14 Jun 2012
- AC C581: 'Re: revisione of manuscript', Andrea Storto, 14 Jun 2012
- EC C773: 'Review of revised manuscript by referee 1', Pierre-Yves Le Traon, 26 Jul 2012
- EC C816: 'final decision', Pierre-Yves Le Traon, 01 Aug 2012
-
RC C144: 'Interannual response of global ocean hindcasts to a satellite-based correction of precipitation fluxes.', Anonymous Referee #1, 11 Apr 2012
- AC C610: 'Response to Referee 1 Comments', Andrea Storto, 19 Jun 2012
-
RC C169: 'Interactive comment on “Interannual response of global ocean hindcasts to a satellite-based correction of precipitation fluxes” by A. Storto et al.', Anonymous Referee #2, 17 Apr 2012
- AC C612: 'Response to Referee 2 Comments', Andrea Storto, 19 Jun 2012
-
EC C564: 'revision of manuscript', Pierre-Yves Le Traon, 14 Jun 2012
- AC C581: 'Re: revisione of manuscript', Andrea Storto, 14 Jun 2012
- EC C773: 'Review of revised manuscript by referee 1', Pierre-Yves Le Traon, 26 Jul 2012
- EC C816: 'final decision', Pierre-Yves Le Traon, 01 Aug 2012
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Cited
7 citations as recorded by crossref.
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- C-GLORSv5: an improved multipurpose global ocean eddy-permitting physical reanalysis A. Storto & S. Masina 10.5194/essd-8-679-2016
- Estimation and Impact of Nonuniform Horizontal Correlation Length Scales for Global Ocean Physical Analyses A. Storto et al. 10.1175/JTECH-D-14-00042.1
- Recent updates to the Copernicus Marine Service global ocean monitoring and forecasting real-time 1∕12° high-resolution system J. Lellouche et al. 10.5194/os-14-1093-2018
- Evaluation of the CMCC eddy‐permitting global ocean physical reanalysis system (C‐GLORS, 1982–2012) and its assimilation components A. Storto et al. 10.1002/qj.2673
- High resolution 3-D temperature and salinity fields derived from in situ and satellite observations S. Guinehut et al. 10.5194/os-8-845-2012
- Understanding large-scale, long-term larval connectivity patterns: The case of the Northern Line Islands in the Central Pacific Ocean L. Mari et al. 10.1371/journal.pone.0182681