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GOVST-V，Beijing
Zenghong Liu & Jianping Xu
State Key Lab of Satellite Ocean Environment Dynamics
The Second Institute of Oceanography, SOA
2014.10.16
Outline
Status of Global Argo
800+ floats/year
Status of Global Argo
Status of Global Argo
1200
1000
UNITED STATES
Total
JAPAN
FRANCE
AUSTRALIA
800
GERMANY
600
USA
UNITED KINGDOM
CANADA
400
INDIA
KOREA (REPUBLIC
OF)
200
CHINA
0
1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013
TOTAL
Status of Global Argo
Status of Global Argo
Status of Global Argo
About 1300,000 profiles from 2000 to 2014
Status of Global Argo
Status of Global Argo
Enhancement of Argo array
“Core Argo” to “Global Argo”
China Argo Progress
China officially joined the international Argo program in September
2001 with the approval from the State Council.
NMDIS/SOA
www.argo.gov.cn
Tianjin
State Oceanic
Administration
(SOA)
SIO/SOA
www.argo.org.cn
Hangzhou
Global data collection
& archives
Data receiving
RT/DM QC
Data distribution
Product development
Float deployment
Data receiving
RT/DM QC
Data distribution
Product development
PI: East China
Sea Branch, SOA
PIs: SCSIO, CAS
SIO, SOA
NMEFC, SOA
OUC
China Argo Progress
Most of the floats were deployed by research programs!!
MOST
5 research programs
since 2002
SOA
2 research programs
since 2007
China Argo
NSFC
2 research
programs
MOST: Ministry of Science and Technology
NSFC: National Natural Science Foundation of China
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
China Argo real-time data centre (Hangzhou)
Argo data flow
China Argo Progress
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
Observed salinity at ɵ=2.8℃
Adjusted salinity
Climatological salinity
Application of Argo data
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
Method: Cressman successive
correction analysis
Li H. et al., 2013
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.
Forecast …
Extrapolation
Analysis …
Observe …
Method: Kalman Filter
Xie J. and Zhu J., 2008
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.
IRI/LDEO Climate Data Library
http://iridl.ldeo.columbia.edu/SOURCES/.CMA/.BCC/.GODAS/
Application of Argo data
Number of published papers based on Argo data in different countries
Thanks for your attention!