PMEL Argo Float Laboratory: Data Management and Visualization

1
PMEL Argo Float Laboratory Data Management and
Visualization

• Willa Zhu
• Donald Denbo
• Greg Johnson
• Elizabeth Steffen

2
System Design
Data Management and Visualization
Instrument Management and Testing
ARGOS
Web Interface
Data Processing Procedure
FloatLab
PostgreSQL
MySQL
Matlab
Data Server
3
ARGO FLOAT Data and Database

• PostgreSQL database is used
• Raw message and header info are stored
• Temperature, salinity, position and other data
  are parsed and stored
• Currently data from total 171 floats are stored
  and new data will be added

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Data Processing

• A set of basic database tables need to be created
  and an active flag to be switched on for a new
  float
• Automated Procedures (a set of Perl scripts)
  running daily to update data
• Preliminary data QC

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Automated Procedures

• Retrieve data/messages from Argos Service, Inc.
  (Perl telnet library used)
• Load all unique raw messages to database
• Select good messages (error checking)
• Parse (good) raw messages and store parsed data
  to database
• Update several basic maps for web interface

6
Data Server

• Serve data via web
• Application and Tools
• PHP (database access, backend programs running
  and dynamic web presentation)
• Perl/GMT Graphic Tool (profile and map plot)
• Java Graphic Application (section plot)
• C program/EPIC (convert to netCDF)

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Web Data Access

• List Data
• Profile Summary
• Profile data
• Engineering Data
• Location information

• Plot Data
• Profile Plot
• Vertical Section Plot
• Engineering Data Plot
• Float Trajectory

8
Argo Profiling CTD Floats Web Page
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Web Interface - Map/Geo Selection

• Mouse-drag a box to select geo-area and
  corresponding corner location is reflected in the
  lon/lat text field (CSS)
• Mouse-over a float to display float info (CSS)
• Floats are presented in different colors to
  distinguish last message receiving date
• Options to draw trajectory and board number on map

10
Web Interface - List Selection

• Sort float list in due date, float ID, WMO-ID,
  start Date, etc
• Hyper link to plot and list data
• Options to list active, inactive or all floats

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Argo Profiling CTD Floats Web Page
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Geo-Selection
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Geo-Selection
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Geo-Selection
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List-Selection
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Profile Summary
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Profile Data Listing
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Profile Location Information
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Engineering Data Listing
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• Profile Plot
• P vs. T Sal (single)
• T vs. Sal (all)
• Theta vs. Sal (all)

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• Vertical Section Plot
• Temperature
• Potential Temperature
• Salinity
• Potential Density

22

• Engineering Data Plot
• Battery
• Piston Position
• Current
• Select Variable

23
Float Trajectory Plot
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Summary

• Automated data update procedure offers an
  efficient tool to retrieve and manage the data.
• Dynamic HTML implementation makes the data
  selection easy.
• The Argo Float data management system and
  visualization web interface provide an easy and
  convenient way for scientists to access Argo
  Float data.