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Topics
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The FRA-JCOPE2 reanalysis data (1 Jan. 1993- 31 Dec. 2009) are now available from the JCOPE group. The page http://www.jamstec.go.jp/frcgc/jcope/distribution/ provides information about the FRA-JCOPE2 reanalysis.
[10.03.07]
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The JCOPE2 reanalysis data (1993-2008) are now available from the JCOPE group. The page http://www.jamstec.go.jp/frcgc/jcope/distribution/ provides information about the JCOPE2 reanalysis.
[09.07.01]
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The JCOPE2 forecast system has been modified (1) to implement a 3DVAR cost function with the anisotropic shape, (2) to introduce a flow dependent background error covariance, and (3) to rearrenge the EOF modes for better representation of oceanic conditions in the Kuroshio-Oyashio mixed water region. [08.11.21]
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The JCOPE activity was introduced by a paper [PDF,0.7MB] introducing Asia-Oceania ocean prediction efforts at GODAE final symposium . [08.11.14]
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The JCOPE2 forecast system has been modified to implement the anisotropic harmonic viscosity scheme for restraining Kuroshio meandering with too large amplitude south of Japan in the model prediction. [08.11.04]
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The JCOPE activity was introduced by a GODAE white paper [PDF,0.8MB]. [08.10.31]
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Use of the zoom-up function for visualized images needs password authentication. If you are interested in use of the zoom up function, please contact JCOPE group. (jcope 'atmark' jamstec.go.jp) [08.10.06]
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The JCOPE2 forecast system has been updated to a new version. Following modifications have been made: 1. Coastal and bottom topography was updated using various kinds of data sources (JTOPO30, Uehara(2002), and GEBCO). 2. The range of the 1/12 degree resolution model was extended to include northern part of the South China Sea. 3. The total sigma levels was increased to 47 from 45. 4. The scheme of baroclinic pressure gradient was changed to the 4th order scheme (McCalpin, 1994) from the 2nd order (Mellor and Blumberg, 1987). [08.05.14]
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The JCOPE2 forecast system has been updated to a new version
with the OGCM forced by realtime wind/surface heat flux
calculated from products of the NCEP Global Forecast System.
The 3D-VAR system has been further updated to a tuned version.
[07.09.19]
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The JCOPE2 forecast system has been updated to a new version,
which includes a FCT tracer advection scheme, biharmonic
viscosity/diffusion scheme, an updated 3D-VAR system with tuned
parameters, and the Changjiang discharge in the East China Sea.
[07.07.30]
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The forecast system has been updated to a new version, JCOPE2,
using a 3-Dimenional Variational (3D-VAR) method.
[06.11.27]
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The prescribed model forecast error in the Kuroshio region has been changed.
[05.12.13]
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The reanalysis data has been recaluculated from 25 Jan.
2005 using revised QuikSCAT NRT data. In addition, the surface
forcing used in the forecast phase has been improved.
[05.08.08]
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The JCOPE ocean forecast system -Toward
engineering appliactions- [PDF,1.0Mbytes] (in Japanese)
[05.06.30]
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Validation of the JCOPE system products in the Kuroshio region [PDF,33Mbytes] (in Japanese) [05.04.01]
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The Kuroshio large-meander formation in 2004 analyzed by the JCOPE ocean forecast system [PDF,0.6Mbytes] (in Japanese) [05.04.01]
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Current and future perspective of the JCOPE ocean forecast system [PDF,1.0Mbytes] (in Japanese) [05.03.24]
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The JCOPE ocean forecast system [PDF,0.45Mbytes] (in Japanese) [05.03.24]
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Heat flux calculation algorithm has been modified to restrain low temperature (less than -1.5 deg.C). [04.12.02]
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Japan Coastal Ocean Predictability Experiment -Kuroshio Path
Forecast (2002-2004)- [PDF,0.7Mbytes] (in Japanese)
[04.09.30]
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We have added a new menu of
hindcasts archive
[04.09.22]
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The prescribed model forecast error in the Kuroshio region has
been changed.
[04.09.22]
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Will
the Kuroshio Large-Meander be generated ? (in Japanese)
[04.05.17]
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Position of the model Hachijojima has been modified and
prescribed model and data error variances have been changed.
[04.05.10]
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The prescribed model forecast error in the Kuroshio region has
been changed. [04.03.22]
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The prescribed model forecast error in the Kuroshio region has
been changed. [04.03.09]
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Two new maps have been added to the Analysis/Forecast page for monitoring the surface Kuroshio path near the Izu Island and the Oyashio intrusion off Tohoku. [04.02.20]
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The description of the system has been considerably updated. [04.02.02]
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The ocean model (POM) has been replaced with POMgcs
(Mellor et al., 2002) [04.01.26]
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Frontier Newsletter, No.24 [04.01.21]
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The JCOPE
ocean forecast system [PDF,0.5Mbytes, 03.11.12]
submitted to First ARGO Science Workshop.
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The system has improved to estimate the model forecast errors in
an adaptive manner (Fox et al., 2000).
The description
of the system was also modified. [03.09.02]
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The system has been updated with the following improvements
[03.08.19] :
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The system improved to assimilate in-situ temperature and
salinity profiles (0-400m) in addition to the assimilation of
the satellite data (sea surface height anomaly and sea surface
temperature). Moreover, the QuikSCAT wind data and Inremental
Analysis Updates (IAU) are introduced into the operation.
The description of the system was also modified.
[03.06.19]
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Change of wind forcing
from the NCEP/NCAR data to the QuikSCAT
[0.1Mbytes,03.06.19]
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A sign of
formation of the Kuroshio large meander ? (in Japanese)
[03.05.06]
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The description of the system was updated to include
examples of comparison between the assimilated result and the
products provided by the operational agency or the research
institute. [03.04.08]
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The description of the system was updated to include
examples of comparison between the assimilated result and the
in-situ observation. [03.03.27]
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The system improved to assimilate both sea surface temperature
and temperature at the depth of 200m in addition to the
assimilation of sea surface height anomaly.
The description of the system was also modified. [03.03.24]
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A forecast system
of Japan Coastal Ocean (in Japanese)
[PDF,4.8Mbytes, 03.01.29]
submitted to the report of the 8th Summer School on Data Assimilation in Oceanography |
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The Jason-1 and ERS-2 data provided by the
NRL/SSC are assimilated into the model
instead of the TOPEX/POSEIDON and ERS-2 data provided by
the CCAR. The new data are assimilated into the
model from July 9, 2002. [02.10.15]
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The TOPEX/POSEIDON sea surface height data has not been included
in the initialization on and after 02.08.30 because of the orbit
transfer of the TOPEX/POSEIDON satellite. Now the ERS-2 data is
only assimilated.
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Japan Coastal Ocean Predictability Experiment -Real time
forecast system-
[PDF,2.0Mbytes, 02.09.20] submitted to a special session "ocean forecasting" in TECHNO-OCEAN 2002 |
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The surface forcings (wind stress, heat flux) used for the
forecast run is changed to the interpolation of monthly
climatology from the constant forcing of the initialization
time, because local intensification of the surface fluxes due to
the Typhoon distorts the forecast. (ex., the forecast
initialized on 02.08.10) This change is applied to the forecast initialized on and after 02.08.20. |
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Statistics of observed upper ocean variability
[1.5Mbytes, 02.07.17] |
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