# Presentation: 672510

## EPIC Utilities for Management, Display, and Analysis of Oceanographic Data

- D.W. Denbo1, N.N. Soreide2, M.C. Spillane1, and W.H. Zhu1

- 1Joint Institute for the Study of Ocean and Atmosphere, University of Washington, Seattle, WA,
- 2NOAA/Pacific Marine Environmental Laboratory, Seattle, WA

## Background

- EPIC was developed at NOAA’s Pacific Marine Environmental Laboratory (PMEL) to manage hydrographic and time series oceanographic observational data sets.
- EPIC system provides
- Data Archival and Retrieval
- Desktop Display and Analysis
- Utilities for Web Access and Display

- Ocean Community Conference '98

- November 17, 1998

## Data Management

- EPIC provides utilities for database support
- Metadata loaders
- Data selection programs
- EPIC supports several SQL databases (INGRES, mSQL, PostgreSQL)
- Searchable metadata includes
- cruise identifiers
- mooring name
- instrument name and type

- Ocean Community Conference '98

- November 17, 1998

## Modular and Open

- EPS Library

- Applications

- EPIC programs are modular to enhance flexibility
- Multiple data formats are supported via “epslib”
- Gateways for Matlab and other commercial packages are provided

- API

- File Independent Layer

- FDL

- Existing

- Planned

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## Data Analysis & Display

- Typically the researcher will use EPIC tools to:
- Select a data set
- Refine the initial data selection
- Analyze the data
- Display the results with publication quality graphics
- EPIC analysis tools available on:
- UNIX
- VMS (VAX and AXP architectures)

- Ocean Community Conference '98

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## Data Analysis & Display(continued)

- EPIC analysis tools can work with
- profile data (CTD casts, XBT, bottle)
- time series (moored instruments)
- ADCP (acoustic doppler current profiler)
- drifting buoy data
- Tools can calculate wide range of oceanographic parameters including dynamic height, geostrophic velocity, and potential density.

- Ocean Community Conference '98

- November 17, 1998

## Data Analysis & Display(continued)

- EPIC programs are available to:
- compute statistics
- auto and cross spectra
- auto and cross correlation
- empirical orthogonal functions
- display sections, time series, multi-variable CTD casts
- EPIC’s modularity allows a researcher to easily add new analysis techniques or use a favorite graphics program.

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- November 17, 1998

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## Web Access via EPIC

- EPIC utilities for creating dynamic Web pages include:
**AnyURL** - uses forms to point to static URLs (gif, mpeg animations, or other Web pages)
**cover** - dynamic generation of graphics or listings by running existing utilities from a Web page
**EPIC Web Browser** - utility for viewing observational data on the Web by creating graphics and listings “on the fly”
**m2gif** - convert Plot Plus output directly to gif format

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## Availability

- EPIC is freely available and used at numerous oceanographic institutions
- Woods Hole Oceanographic Institute
- U.S. Geological Survey
- Scripps Institution of Oceanography
- etc ...
- Available at: *http://www.pmel.noaa.gov/epic/epic-toolkits.html*
- EPIC Home Page: *http://www.pmel.noaa.gov/epic/home.html*

- Ocean Community Conference '98

- November 17, 1998