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!