NDLI: Verification of an operational ocean circulation-surface wave coupled forecasting system for the China’s seas

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Acta Oceanologica Sinica : Volume 35, Issue 1, January 2016

Acta Oceanologica Sinica : Volume 34

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Verification of an operational ocean circulation-surface wave coupled forecasting system for the China’s seas

Content Provider	Springer Nature Link
Author	Wang, Guansuo Zhao, Chang Xu, Jiangling Qiao, Fangli Xia, Changshui
Copyright Year	2016
Abstract	An operational ocean circulation-surface wave coupled forecasting system for the seas off China and adjacent areas (OCFS-C) is developed based on parallelized circulation and wave models. It has been in operation since November 1, 2007. In this paper we comprehensively present the simulation and verification of the system, whose distinguishing feature is that the wave-induced mixing is coupled in the circulation model. In particular, with nested technique the resolution in the China’s seas has been updated to (1/24)° from the global model with (1/2)° resolution. Besides, daily remote sensing sea surface temperature (SST) data have been assimilated into the model to generate a hot restart field for OCFS-C. Moreover, inter-comparisons between forecasting and independent observational data are performed to evaluate the effectiveness of OCFS-C in upper-ocean quantities predictions, including SST, mixed layer depth (MLD) and subsurface temperature. Except in conventional statistical metrics, non-dimensional skill scores (SS) is also used to evaluate forecast skill. Observations from buoys and Argo profiles are used for lead time and real time validations, which give a large SS value (more than 0.90). Besides, prediction skill for the seasonal variation of SST is confirmed. Comparisons of subsurface temperatures with Argo profiles data indicate that OCFS-C has low skill in predicting subsurface temperatures between 100 m and 150 m. Nevertheless, inter-comparisons of MLD reveal that the MLD from model is shallower than that from Argo profiles by about 12 m, i.e., OCFS-C is successful and steady in MLD predictions. Validation of 1-d, 2-d and 3-d forecasting SST shows that our operational ocean circulation-surface wave coupled forecasting model has reasonable accuracy in the upper ocean.
Starting Page	19
Ending Page	28
Page Count	10
File Format	PDF
ISSN	0253505X
Journal	Acta Oceanologica Sinica
Volume Number	35
Issue Number	2
e-ISSN	18691099
Language	English
Publisher	The Chinese Society of Oceanography
Publisher Date	2016-02-24
Publisher Place	Beijing
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	operational forecast sea surface temperature mixed layer depth lead time subsurface temperature ocean circulation-surface wave coupled forecast system China’s seas Oceanography Climatology Ecology Engineering Fluid Dynamics Marine & Freshwater Sciences Environmental Chemistry
Content Type	Text
Resource Type	Article
Subject	Aquatic Science Oceanography

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