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Assessing the impact of observations on ocean forecasts and reanalyses: Part 1, Global studies

Citation

Oke, PR and Larnicol, G and Fujii, Y and Smith, GC and Lea, DJ and Guinehut, S and Remy, E and Balmaseda, MA and Rykova, T and Surcel-Colan, D and Martin, MJ and Sellar, AA and Mulet, S and Turpin, V, Assessing the impact of observations on ocean forecasts and reanalyses: Part 1, Global studies, Journal of Operational Oceanography, 8, (S1) pp. S49-S62. ISSN 1755-876X (2015) [Refereed Article]


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DOI: doi:10.1080/1755876X.2015.1022067

Abstract

Under GODAE OceanView the operational ocean modelling community has developed a suite of global ocean forecast, reanalysis and analysis systems. Each system has a critical dependence on ocean observations routinely assimilating observations of in-situ temperature and salinity, and satellite sea-level anomaly and sea surface temperature. This paper demonstrates the value and impact of ocean observations to three global eddy-permitting forecast systems, one global eddy-permitting model-independent analysis system, one eddy-resolving reanalysis system, and two seasonal prediction systems. All systems have been used to assess the impact of Argo profiles, including scenarios with no Argo data, and a degraded Argo array unanimously concluding that Argo is a critical data set the most critical for seasonal prediction, and as critical as satellite altimetry for eddy-permitting applications. Most systems show that TAO data are as important as Argo in the tropical Pacific, and that XBT data have an impact that is comparable to other data types in the vicinity of XBT transects. It is clear that no currently available data type is redundant. On the contrary, the components of the global ocean observing system complement each other remarkably well, providing sufficient information to monitor and forecast the global ocean.

Item Details

Item Type:Refereed Article
Keywords:data assimilation, model, salinity
Research Division:Earth Sciences
Research Group:Oceanography
Research Field:Physical Oceanography
Objective Division:Environment
Objective Group:Physical and Chemical Conditions of Water
Objective Field:Physical and Chemical Conditions of Water in Marine Environments
Author:Oke, PR (Dr Peter Oke)
ID Code:120257
Year Published:2015
Web of Science® Times Cited:12
Deposited By:Centre for Oceans and Cryosphere
Deposited On:2017-08-17
Last Modified:2017-08-17
Downloads:0

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