An assessment of ten ocean reanalyses in the polar regions

Uotila, P., Goosse, H., Haines, K. ORCID: https://orcid.org/0000-0003-2768-2374, Chevallier, M., Barthelemy, A., Bricaud, C., Carton, J., Fuckar, N., Garric, G., Iovino, D., Kauker, F., Korhonen, M., Lien, V. S., Marnela, M., Massonnet, F., Mignac, D., Peterson, K. A., Sadikni, R., Shi, L., Tietsche, S., Toyoda, T., Xie, J. and Zhang, Z. (2019) An assessment of ten ocean reanalyses in the polar regions. Climate Dynamics, 52 (3-4). pp. 1613-1650. ISSN 0930-7575 doi: 10.1007/s00382-018-4242-z

Abstract/Summary

Global and regional ocean and sea ice reanalysis products (ORAs) are increasingly used in polar research, but their quality remains to be systematically assessed. To address this, the Polar ORA Intercomparison Project (Polar ORA-IP) has been established following on from the ORA-IP project. Several aspects of ten selected ORAs in the Arctic and Antarctic were addressed by concentrating on comparing their mean states in terms of snow, sea ice, ocean transports and hydrography. Most polar diagnostics were carried out for the first time in such an extensive set of ORAs. For the multi-ORA mean state, we found that deviations from observations were typically smaller than individual ORA anomalies, often attributed to offsetting biases of individual ORAs. The ORA ensemble mean therefore appears to be a useful product and while knowing its main deficiencies and recognizing its restrictions, it can be used to gain useful information on the physical state of the polar marine environment.

Item Type	Article
URI	https://reading-clone.eprints-hosting.org/id/eprint/76764
Identification Number/DOI	10.1007/s00382-018-4242-z
Refereed	Yes
Divisions	Science > School of Mathematical, Physical and Computational Sciences > National Centre for Earth Observation (NCEO) Science > School of Mathematical, Physical and Computational Sciences > Department of Meteorology
Publisher	Springer
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