Results 11 to 20 of about 759,000 (336)

Evaluation of an Ocean Reanalysis System in the Indian and Pacific Oceans

open access: yesAtmosphere, 2023
This paper describes an ocean reanalysis system in the Indian and Pacific oceans (IPORA) and evaluates its quality in detail. The assimilation schemes based on ensemble optimal interpolation are employed in the hybrid coordinate ocean model to conduct a ...
Changxiang Yan, Jiang Zhu
semanticscholar   +3 more sources

How Deep Argo Will Improve the Deep Ocean in an Ocean Reanalysis [PDF]

open access: yesJournal of Climate, 2020
Global ocean sampling with autonomous floats going to 4000–6000 m, known as the deep Argo array, constitutes one of the next challenges for tracking climate change. The question here is how such a global deep array will impact ocean reanalyses.
F. Gasparin   +3 more
semanticscholar   +4 more sources

The Indian Ocean Deep Meridional Overturning Circulation in Three Ocean Reanalysis Products [PDF]

open access: yesGeophysical Research Letters, 2019
The time mean Indian Ocean (IO) deep meridional overturning circulation (MOC) is compared across three ocean reanalysis products (ORAS4, GECCO2, and GFDL).
T. Jayasankar, R. Murtugudde, T. Eldho
semanticscholar   +2 more sources

Evaluation of sea surface temperature from ocean reanalysis products over the North Indian Ocean

open access: yesFrontiers in Marine Science
Ocean and sea ice reanalyses (ORAs or ocean syntheses) are reconstructions of the ocean and sea ice states using an ocean model integration constrained by atmospheric surface forcing and ocean observations via a data assimilation method. Ocean reanalyses
Raheema Rahman   +2 more
doaj   +2 more sources

Multiscale data assimilation in the Bluelink ocean reanalysis (BRAN)

open access: yesOcean Modelling, 2021
Abstract Forecast errors of subsurface temperature and salinity are substantially reduced with an efficient, two-step, multiscale Ensemble Optimal Interpolation (EnOI) system, applied to a near-global eddy-resolving ocean model. A critical element of any data assimilation system is the background error covariance, which for EnOI is typically a static
M. Chamberlain   +5 more
semanticscholar   +2 more sources

Evaluation of the ECMWF ocean reanalysis system ORAS4 [PDF]

open access: yesQuarterly Journal of the Royal Meteorological Society, 2013
AbstractA new operational ocean reanalysis system (ORAS4) has been implemented at ECMWF. It spans the period 1958 to the present. This article describes its main components and evaluates its quality. The adequacy of ORAS4 for the initialization of seasonal forecasts is discussed, along with the robustness of some prominent climate signals.ORAS4 has ...
M. Balmaseda, K. Mogensen, A. Weaver
semanticscholar   +2 more sources

Equatorial wave diagnosis for the Atlantic Niño in 2019 with an ocean reanalysis

open access: yesOcean Science (OS), 2023
. The propagation of equatorial waves is essential for the onset of Atlantic Niño, but diagnosing waves with ocean reanalysis or in situ data remains a challenge.
Q. Song, H. Aiki
semanticscholar   +1 more source

JCOPE-FGO: an eddy-resolving quasi-global ocean reanalysis product

open access: yesDeutsche Hydrographische Zeitschrift, 2022
In the present research, we provide a brief description and assessment of the oceanic fields analyzed in the newly developed eddy-resolving quasi-global ocean reanalysis product, named the Japan Coastal Ocean Predictability Experiments-Forecasting Global
S. Kido, M. Nonaka, Y. Miyazawa
semanticscholar   +1 more source

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