zenghong liu & jianping xu state key lab of satellite

Zenghong Liu & Jianping Xu

State Key Lab of Satellite Ocean Environment Dynamics

The Second Institute of Oceanography, SOA

2014.10.16

GOVST-V，Beijing

Outline

Status of Global Argo

800+ floats/year


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


About 1300,000 profiles from 2000 to 2014


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.

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

Argo data flow

China Argo real-time data centre (Hangzhou)

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


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


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


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


NCC (National Climate Centre): BCC-GODAS operational

assimilation system.

http://iridl.ldeo.columbia.edu/SOURCES/.CMA/.BCC/.GODAS/

IRI/LDEO Climate Data Library


Number of published papers based on Argo data in different countries

Thanks for your attention!

zenghong liu & jianping xu state key lab of satellite

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