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Exploring PMEL EPIC Profile Data With Java OceanAtlas (JOA) .

Exploring PMEL EPIC Profile Data With Java OceanAtlas (JOA). John R. Osborne. http://www.pmel.noaa.gov/epic/software/JavaJOA.htm. Overview of JOA Features. Cross Platform Windows, Solaris, Mac OS 9/X, Linux. Overview of JOA Features. Sophisticated exploration of profile data

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Exploring PMEL EPIC Profile Data With Java OceanAtlas (JOA) .

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  1. Exploring PMEL EPIC Profile Data With Java OceanAtlas (JOA). John R. Osborne http://www.pmel.noaa.gov/epic/software/JavaJOA.htm

  2. Overview of JOA Features • Cross Platform • Windows, Solaris, Mac OS 9/X, Linux

  3. Overview of JOA Features • Sophisticated exploration of profile data • Linked browsing between all plot types • User interface is friendly, but offers many options • Color as a third variable • All plots resizeable and zoomable • No limit on number of open windows • Informative default interface • Full user customization • Program resources saved in XML format • Includes NdEdit for data selection from large data collections • Large number of supported profile data formats for bottle and CTD data

  4. Overview of JOA Features • Data Window • Measured data and station metadata at current browsing point • Graphical cross-section • Display units and color data display by quality codes (WOCE or IGOSS) • Color cross-section by bottle quality code (if present) • Display current color variable

  5. Overview of JOA Features • Property-Property Plots • Property-property plots with up to 3 x-axes • Isopycnal overlay

  6. Overview of JOA Features • Profile Plots • Offset property-property profiles (waterfall plots)

  7. Overview of JOA Features • Contour Plots • Contoured sections (e.g., depth sections) • Referenced and residual contour plots

  8. Overview of JOA Features • Map Plots • Multiple projections • Station symbols colored by properties interpolated onto multiple surfaces (e.g., pressure or density) • Bathymetry display: isobaths, ETOPO, Sandwell-Smith • Tools to create custom sections

  9. Overview of JOA Features • Station Value Plots • Station plots of mixed-layer calculations and integrals

  10. Overview of JOA Features • Calculations • Observation Calculations • Theta, sigma(0)-sigma(n), NO, PO, AOU, Spiciness, O2 % saturation, alpha, beta, specific volume anomaly, heat storage, sound velocity, B-V frequency, squared B-V frequency, potential vorticity • Integrals of acoustic travel time, net heat content, potential energy anomaly, geopotential anomaly • Custom Calculations • Arithmetic expressions • Derivatives • Transformations • Station Calculations • Mixed-layer depth • Integral/weighted average of variable between surfaces

  11. Overview of JOA Features • Data Filtering • Station Filters • Include/exclude individual stations/sections • Exclude stations missing observations of selected variable • Include stations in geographical region • Observation Filters • Up to four criteria • Boolean logic (and/or) can be applied to filter criteria • Observations that meet filter criteria can be viewed, highlighted, or removed from plots • Useful for data quality control

  12. Overview of JOA Features • Customization • Color bars • Color palettes • Interpolation surfaces • Custom coastlines and bathymetry • Saved map settings • CTD Decimation • Fixed levels, JOA surface levels, or custom levels • Sophisticated import of WOCE “Exchange” files

  13. Overview of JOA Features • Integrated into the EPIC environment • Reads EPIC pointer files created by “epicselect” or EPIC web interface • Writes EPIC pointer files • On-line help for EPIC users: http://www.pmel.noaa.Gov/epic/software/JavaJOA.htm

  14. Overview of JOA Features • New ‘NdEdit’ function • Linked windows for browsing station locations in time/space • Overlay bathymetry in map (lat/lon) view • Filter in time or space • Select stations with box, polygon, segmented section line • Retain or delete filtered stations • Save EPIC pointer files • Open selected files directly in JOA

  15. Java Ocean Atlas Input/Output • Reads and writes many file types • Including EPIC pointer files Save in these types New simplified CSV ‘WHP-Exchange’ files ‘Spreadsheet’ files

  16. JOA Demo

  17. The Near Future: JOA 3.5 • Latitude/Longitude axes for contour and profile plots • Map improvements • Better control of missing values in contour plot interpolations • Java 2 platform graphics • Mac OS X integration • Available March, 2002 The Future • Velocity calculations • Multi-layer contoured sections • JOA for all in-situ data types • Some features available by mid-late-2002

  18. Using JOA in the EPIC Environment Contacts oz@pmel.noaa.gov or oz@oceanatlas.com Mick Spillane or any of the EPIC team (Nancy, Don or Willa) On-line Help http://www.pmel.noaa.gov/epic/software/JavaJOA.htm

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