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1 ARGO World Wide Web ARGOWWW Construction of the automated data processing and delayed-mode quality control system for profiling floats Yasushi TAKATSUKI Yasuko ICHIKAWA Taiyo KOBAYASHI Keisuke MIZUNO Kensuke TAKEUCHI An automated data processing and quality management system for profiling floats of the ARGO project has been constructed. The system automatically processes profiling float data after about hours from its descent, and stores data in the database system. The float data is publicized through World Wide Web. For the quality control of float data, we prepared historical database such as WOA and Hydrobase, and collect spatially/temporally neighboring ocean data in geographical/time on GTS via NEAR-GOOS Regional Real-Time Data Base. The system enables us to quality management using such as overlay plot of the float data and historical/neighboring data and so on. Keywords : ARGO project, Automated data processing, quality control, database, WWW Ocean Observation and Research Department Frontier Observational Research System for Global Change

2 , m/ ALACE, m //, / Argo Argo GOOS CLIVARGODAE WMO IOC ARGO Argo Argo PC firewalltelnet/ftp httpworld Wide Web SQL SQL POP3( ) telnet ftp JAMSTEC Firewall http http» Japan ARGO Delayed-mode Data Base ( Japan ARGO project ( ( Fig. Conceptual drawing of the data processing system for profiling floats.

3 Web perl IDL VERI- TAS Cluster Server Ethernet floatdb Web floatdb IP float adm floatdbfloat adm Webfloatdb VERI- TAS NetBackup DLT......Web ARGOS ARGOS ARGOS km - ARGOS multi-satellite Service (floatdb1) float1adm SUN Enterprise 22R 2CPU, 2GB 18GB HD x 2 (RAID 1) SUN StorEdge L28 DLT tape autoloader (Drive:1, Slot:8) SUN StorEdge A1 36GB HD x 6 (RAID 5) (floatdb2) SUN Enterprise 22R 2CPU, 2GB 18GB HD x 2 (RAID 1) float2adm RAID 1 SUN StorEdge A1 36GB HD x 6 (RAID 5) UltraWide SCSI Ethernet Fig. Hardware components of Database server and Web server.

4 Fig. Flowchart of automatic float data processing. ARGOS ARGOS ARGOSPlatform Transmitter Terminal; PTT ARGOS ARGOS Frequency (%) / 4/ 1-21/ 6/ N= Delivery time after transmission (hour) Receive Ratio (%) Fig. Histogram and cumulative receive rate as a function of the delivery time after transmission. telnetargos telnetARGOS ID ARGOS ARGOS ARGOS telnet telnet

5 bytes bytebytesbits CRC Cyclic Redundancy Check, CRC CRC CRC bits CRC / CRC Frequency (%) N: 3135 Average: 5.4 Median: Number of Recieve Message Fig. Histogram of duplicate number for each data message block. Argo Argo Data Management Team Meeting WWW GTSPP Real-time Quality control Manual : ARGOS kt. :, m CRC Fig. Example of error data that passed CRC check.

6 : ETOPO : : / : T=. S+. E S /.E S.E P S; P; dbar :.. Vtest= V V +V/ VV / V VV : Vtest= V V +V/ V VV : // ARGOS ARGOS Web / / / /Web http Argo.. Table Range check value of temperature and salinity for each depth range used for automatic quality control. Depth Range (meters) to 25 >25 to 5 >5 to 1 >1 to 15 >15 to 2 >2 to 3 >3 to 4 >4 to 11 >11 to 3 Temperature (degree C) 2. to to to to to to to to to 18 Salinity (PSS78) to 4 to 4 1 to 4 3 to 4 3 to 4 3 to 4 3 to 4 1 to 4 22 to 38 / Fig. J_ARGOj.html J_ARGOe.html images/ WHATs_ARGO/ search.html,search-e.html argo/ search-nj.html,search-e-nj.html image/ java/ map/ float/ 2932/ 2933/ 2954/ map/ profile/ t-s/ danmen/ data/ Japan ARGO Delayed-mode Data basewebhttp://w.jamstec.go.jp/argo/ World Wide Web Site structure of the "Japan ARGO Delayed-mode Data base" (

Meeting Fig. Top page of the "Float information management system." Frequency (%) 5 4 3 2 1 N: 152 Average: 19.7 Median: 19.3 Max: 32.2 Min: 12.

7 Freeland Bacon et al. ARGO PC NODC/NOAA World Ocean Atlas ARGO Hydrobase NEAR-GOOSGOOS RRTDB GTS / ftp WWW Argo International Argo Data Management Group meeting Argo Data Management Team Meeting Fig. Top page of the "Float information management system." Frequency (%) N: 152 Average: 19.7 Median: 19.3 Max: 32.2 Min: Decode delay time after float descent (hour) Ratio of Processed profile (%) WOA Fig. Sample screen shot of the "Float data quality control program." Comparison graph of Float data and historical data WOA). Fig. Histogram of demand time between the float descent time after transmission and decode time of the float data.

8 ARGOS ARGO.. CRC Sherman ARGOS ARGOS CRC CRC PC Fig. Example of recovery data from bit error shown in Fig.. #1 #2 #3 #4 # Error# Good Error ARGOS Fig. Example of bit error in ARGOS message.

9 WWW WOA, Hydrobase Argo D. Swift NOAA AOMLR. MolinariGOOS GOOS Davis, R. E., Webb, D. C., Regier, L. A. and Dufour, J., "The Autonomous Lagrangian Circulation Explorer (ALACE)", J. Atm. and Oceanic Technol., ( ), - (). Roemmich, D. and W. B. Owens, "The Argo project: global ocean observations for understanding and prediction of climate variability", Oceanography,, - (), " ARGO ",,, -. CLS/Service Argos, Users Manual.. (CLS/Service Argos, Inc., January ).,,,,, "",,, - (). IOC, Manuals and Guides # "GTSPP Real-time Quality control manual" (). NOAA, Data Announcement -MGG-, Digital relief of the Surface of the Earth. (NOAA, National Geophysical Data Center, Boulder, Colorado, ). UNESCO, "Algorithms for Computation of Fundamental Properties of Seawater." UNESCO Technical Papers in marine science, (). Freeland, H., "Calibration of the Conductivity Cells on P- ALACE Floats", U.S. WOCE Report, - (). Bacon, S., L. R. Centurioni and W. J. Gould, "The Evaluation of Salinity Measurements from PALACE Floats", J. Atm. and Oceanic Technol., ( ), - ().,,,,,,,,, " HydroBase I ",,, -. NOAA, World Ocean Atlas (WOA), (NOAA, National Oceanographic Data Center, Ocean Climate Laboratory, April ). Macdonald, A. M., T. Suga and R. G. Curry, "An isopycnally averaged North Pacific climatology", J. Atm. and Oceanic Technol., ( ), - ().,, "NEAR-GOOS ",,, -. Sherman, "Observations of Argos Performance", J. Atm. and Oceanic Technol., ( ), - ().

10 / ARGOS bytes A A T S P B H B L x- xff[- ] [ A ] T= B H * +B L / S= B H * +B L / + P= B H * +B L / in PSS dbar [ A ] T= B H * +B L / B H * +B L T= B H * +B L -/ B H * +B L > S= B H * +B L / in PSS P= B H * +B L / dbar Vp t B B H /B L / V=B/+. V p=b*-. +. inhg t= B H * +B L * sec A dbar dbar A ARGOS ARGOS bytes Aa A Fig. A Sample messages from ARGOS system. A Table A Data table of "Profile termination flag byte" in hexadecimal notation

11 (a) (b) (c) A aabac Fig.A Data format arrangement of profiling floats in operation. a First message of type Ab First message of type Ac Other messages

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