zenghong liu & jianping xu state key lab of satellite ocean environment dynamics the second...

Global Argo & China Argo progress and

applications to oceanography

Global Argo & China Argo progress and

applications to oceanography

Zenghong Liu & Jianping XuState Key Lab of Satellite Ocean Environment Dynamics

The Second Institute of Oceanography, SOA2014.10.16

GOVST-V， Beijing

OutlineOutline

1. Status of Global Argo1. Status of Global Argo

2. China Argo progress2. China Argo progress

3. Application of Argo data3. Application of Argo data

Status of Global ArgoStatus of Global Argo800+ floats/year

Status of Global ArgoStatus of Global Argo


1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 20130

200

400

600

800

1000

1200

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 ProgressChina 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, CASSIO, SOA

NMEFC, SOAOUC

NMDIS/SOAwww.argo.gov.cn

SIO/SOAwww.argo.org.cn

Float deploymentData receivingRT/DM QCData distributionProduct development

Global data collection & archivesData receivingRT/DM QCData distributionProduct development

Tianjin

Hangzhou


MOST: Ministry of Science and TechnologyNSFC: National Natural Science Foundation of China

2 research programs since 2007

China ArgoSOA

MOST

NSFC

2 research programs

5 research programs since 2002

Most of the floats were deployed by research programs!!

China Argo ProgressChina Argo Progress2002-2014.09, 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 ProgressChina Argo ProgressYear 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


Argo data flow

China Argo real-time data centre (Hangzhou)


Observed salinity at ɵ=2.8℃

Adjusted salinityClimatological salinity

Argo data QC

Real-time QC: fast, automatic, no obvious errors, to operational agenciesDelayed-mode QC: high quality, need oceanographic knowledge surface pressure correction cell thermal mass correction salinity correction

Application of Argo dataApplication 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

Application of Argo dataApplication of Argo dataNMEFC: 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/redaitaipingyang.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 ocean environment dynamics the second...

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