Tools for accessing distributed in-situ data collections Donald W. Denbo, NOAA/PMEL-JISAO Jason E. Fabritz, NOAA/PMEL-JISAO Bernard J. Kilonsky, Sea Level Center/ADCP Center, University of Hawaii John R. Osborne, OceanAtlas Software L. Charles Sun, NOAA/NODC Willa H. Zhu, NOAA/JISAO Nancy Soreide, NOAA/PMEL AMS IIPS Feb , Long Beach, CA

Challenge  Locating and selecting individual observations from large, distributed collections of in situ data observations   Examples: Individual oceanic or atmospheric profiles, time series, buoy tracks, etc.

Some solutions  Tools and Applications   LDAP Directory Services   NdEdit for subsetting large in-situ collections   Interactive Java graphics   Intensive exploration of multiple data types   OPeNDAP (DODS) clients and servers for in-situ data   Access from Desktop and Web  Assembled from OpenSource components  

LDAP Directory Service Finding distributed data collections  Search on geographic region, observed quantities or keyword  Automatically populated from data servers  Metadata instantly known to LDAP directories  Access control for experimental data products  Open Source  Standards-based  Platform independent,  Scalable, extensible,  Supports desktop or web client

X-Y map view Y-T Y-T time range NdEdit Investigate space-time distribution Select data in any View Explore Data Locations and Subset Data Collections Interactive, linked windows View any 2D sliice xy, xt, xz, yt, yz, yt Select time range See data in range X-Y map view Y-T Y-T time range

Section Tool - select stations along a depth contour NdEdit

Selected stations are in a narrow time band NdEdit

Polygon tool – select an oblique section line See time range of stations NdEdit

NdEdit  NdEdit is an interactive Java tool  NdEdit is being re-engineered for the Web

SGT: A Scientific Graphics Toolkit  Java toolkit for scientific graphics  On-line documentation, examples, tutorials, streaming video  JavaBeans in next release  Features  Contour, line and vector plots,  Axes user settable or automatically scaled  multiple Time Axis formats  mouse-movable, customizable Labels, line keys, icons  Legend generation automatic  Widely used, freely available  scientific and commercial applications use SGT  downloads by 4508 unique sites from 66 countries 

Applications Java Desktop and Web clients

ncBrowse Java tool for data/metadata browse  NetCDF and full OPeNDAP support   Desktop Java application   Axis mapping, parametric plots, flexible mapping of independent variables to axes   Line, vector and contour plots   Animations, 3D graphics via VisAD  Popular, freely available   6471 downloads by 2896 unique sites in 57 countries   OPeNDAP (DODS) client, Unidata netCDF client, WOCE data CD, etc.   See: AMS Paper 15.2 – Thursday 4:45pm - Donald Denbo

Java OceanAtlas for browsing ocean data  Intensive Java desktop browsing of ocean data  Property-property plots with up to 7 x axes, waterfall diagrams, Contour plots/residual contour plots, Map plots with optional "bubble" isosurface plots, Linked browsing of all plot types, Built-in and custom calculations, NdEdit for data location/selection  Reads WOCE, EPIC, OPeNDAP netCDF data, some ARGO formats  Extended for wide range of data types  Profile, time series, drifting buoy, gridded analyses, model outputs  Widely used, freely available  

Climate Data Portal Distributed ocean observations  Major in situ data collections:   TAO El Nino buoy data (realtime/PMEL), Global sea level data (realtime/U of Hi), GTSPP (NODC), PMEL hydrographic data and time series collection, WOCE ADCP (U of Hi), IPRC/APDRC in situ data, US Coastal Ocean Time Series database (NODC) OPeNDAP: in-situ data server and client OPeNDAP: in-situ data server and client LDAP directory services NdEdit for data selection/subsetting Data Servers, Clients (Java and Web) – focus on in situ data

OceanShare Network collaboration tool  Collaboration features  Local, remote data file access and Java graphics  Standard collaboration tool features (annotation, whiteboard, etc)  Secure LDAP Document Repository  Proposals, papers in progress, data, images  Access control by document or by folder  Accessible from web and desktop  OPeNDAP compatible soon 

EPIC tools for the Web for building customized web access to data EPIC Web Toolkit EPIC Web Toolkit   Interface design   Backend graphics   Map data selector Example applications Example applications EPIC Web Browser (general) TAO (El Nino buoys) Unaami (Arctic time series) OSCAR (Satellite ocean currents) Multibeam data (hydrography)

Tools and Applications Java desktop and Web  Modular Web and Open Source components  Java interactivity  Low cost development/maintenance  OpenSource, standards-based  Scalable, extensible  OPeNDAP supported or planned  