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NetCDF-Java library and TDS version 4.6.2

10 June 2015

The NetCDF-Java/Common Data Model (CDM) library and THREDDS Data Server (TDS) version 4.6.2 were released on June 9th, 2015. The development team recommends this upgrade for anyone using the CDM or TDS. The latest update can be downloaded from:

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Posted by Sean Arms

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NetCDF-Java library and TDS version 4.6.1

20 May 2015

The NetCDF-Java/Common Data Model (CDM) library and THREDDS Data Server (TDS) version 4.6.1 were released on May 15, 2015. The development team recommends this upgrade for anyone using the CDM or TDS. The latest update can be downloaded from:

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Posted by Sean Arms

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TDS 4.6 Release Candidate

20 April 2015

Unidata's demonstration THREDDS Data Server (TDS) at http://thredds.ucar.edu/thredds/ is currently running version 4.5 of the TDS server software. On May 18, 2015, this server will be updated to use TDS version 4.6. Read on for details on the new version and transition options.

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Posted by Sean Arms

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Unidata jj2000 Code Repository Now Available

08 August 2014

Unidata is pleased to announce that it will be maintaining a publicly-accessible code repository for the jj2000 software library. jj2000 is a JPEG 2000 encoder/decoder written in pure Java; it is used in the THREDDS Data Server (TDS) and the NetCDF-Java library to support JPEG 2000 compression in GRIB2 files.

JPEG 2000 is an image coding system that uses compression techniques based on wavelet technology. Unlike the older JPEG standard, JPEG 2000 can perform either lossless or lossy compression of data.

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Using METOC Geospatial Intelligence in anti-Piracy Operations

04 November 2013

Although piracy has been around since nations have engaged in maritime trade, the scale and focus of attacks in and around the Horn of Africa has attracted significant attention over the past few years. The publicity reached a peak in April 2009 following the seizure of the Maersk Alabama and the direct involvement of the US Navy in the release of the ship's Captain. The extent of piracy in the Gulf of Aden and waters adjacent to Somalia led to the formation of Combined Task Force 151 (CTF151) to conduct anti-piracy operations.

As part of their task force activities, the Royal Australian Navy's Hydrography and METOC branch began to analyze whether any weather-dependent patterns could be identified in the timing and distribution of piracy attacks. The study commenced with accessing the NGA piracy database and overlaying the location of each attack on the long-term climate average for monthly mean significant wave height (a measure of the combined height of the locally wind driven sea and the underlying long wave swell).

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Posted by Unidata News