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Zenghong Liu & Jianping Xu
State Key Lab of Satellite Ocean Environment Dynamics
The Second Institute of Oceanography, SOA
2014.10.16
GOVST-V,Beijing
Status of Global Argo
0
200
400
600
800
1000
1200
1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013
UNITED STATES
JAPAN
FRANCE
AUSTRALIA
GERMANY
UNITED KINGDOM
CANADA
INDIA
KOREA (REPUBLIC OF)
CHINA
TOTAL
Total
USA
China Argo Progress
China officially joined the international Argo program in September
2001 with the approval from the State Council.
State Oceanic
Administration
(SOA)
PI: East China
Sea Branch, SOA
PIs: SCSIO, CAS
SIO, SOA
NMEFC, SOA
OUC
NMDIS/SOA www.argo.gov.cn
SIO/SOA www.argo.org.cn
Float deployment
Data receiving
RT/DM QC
Data distribution
Product development
Global data collection
& archives
Data receiving
RT/DM QC
Data distribution
Product development
Tianjin
Hangzhou
China Argo Progress
MOST: Ministry of Science and Technology
NSFC: National Natural Science Foundation of China
2 research programs
since 2007
China Argo SOA
MOST
NSFC
2 research
programs
5 research programs
since 2002
Most of the floats were deployed by research programs!!
China Argo Progress
2002-2014.09, 325 floats have been deployed in Pacific and Indian ocean.
195 floats are still active as of Oct 2014.
164 APEX (including 27 Iridium floats and 137 standard floats)
151 PROVOR (including 17 Iridium floats and 134 floats)
10 ARVOR
China Argo Progress Year No.
2002 5
2003 16
2004 8
2005 0
2006 6
2007 0
2008 16
2009 16
2010 32
2011 49
2012 69
2013 30
2014 80
Not operational, unstable yearly deployments
China Argo Progress
Observed salinity at ɵ=2.8℃
Adjusted salinity
Climatological salinity
Argo data QC
Real-time QC: fast, automatic, no obvious errors, to operational agencies
Delayed-mode QC: high quality, need oceanographic knowledge
surface pressure correction
cell thermal mass correction
salinity correction
Application of Argo data
CORA: a 23-year (1986-2008) regional reanalysis product of
temperature, salinity and currents for the China coastal
waters and adjacent seas developed by NMDIS.
Han G. J. et al., 2013
Application of Argo data
BOA_Argo: a monthly (1º×1º) gridded temperature and
salinity fields of global oceans based on Argo profiles from 2004
to 2013 which is developed by Second Institute of
Oceanography, SOA. http://www.argo.org.cn
Li H. et al., 2013
Method: Cressman successive
correction analysis
Application of Argo data
Surface current: a dataset (Version 2) of global ocean surface
currents for 1999‐2011 derived from Argo float trajectories
developed by Institute of Atmospheric Physics (IAP), Chinese
Academy of Sciences.
Xie J. and Zhu J., 2008
Method: Kalman Filter
Forecast …
Observe …
Analysis … Extrapolation
Application of Argo data
NMEFC: reanalysis product of monthly temperature and
salinity fields in tropical Pacific ocean with a spatial resolution
of 2º×1º, and 13 levels between 0-630 meters.
http://www.nmefc.gov.cn/fxcp/red
aitaipingyang.aspx
Application of Argo data
NCC (National Climate Centre): BCC-GODAS operational
assimilation system.
http://iridl.ldeo.columbia.edu/SOURCES/.CMA/.BCC/.GODAS/
IRI/LDEO Climate Data Library