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|Title:||XBT fall rate experiments and CTD intercomparisons 2012|
|Acronym:||XBT experiments 2012|
|Investigator(s):|| Rebecca Cowley
CSIRO Oceans & Atmosphere - Hobart [details]
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|R. Cowely (CMAR)||Southern Surveyor SS2012_T01. XBT fall-rate experiments using XBT/CTD intercomparisons. Scientific Objectives XBT/CTD intercomparison (Rebecca Cowley): We propose a simple and reliable experiment to assess the fall-rate and temperature biases of modern XBTs manufactured by Lockheed Martin Sippican (the major global supplier). We aim to collect concurrent temperature profiles form both XBT systems and high accuracy CTD systems. We have some old XBT probes which we would like to deploy to compare with modern probes. We plan to address the questions: 1. Do modern XBTs have temperature and depth biases? 2. Do older XBTs (circa 2001-2003) show similar temperature and depth biases to those found in previous work? 3. Can we use depth soundings to check depth accuracy, and how do these results compare with the CTD/XBT intercomparison method? Piggy-back Projects Rudy Kloser (CMAR) Rudy's project is SWATH mapping of the 200m to 1000m depth range, particularly along the northern edge of Bass Canyon. Julia Reisser (PhD student, CMAR) Julia's project is looking at the sources, distribution and fate of marine debris. Sampling several times per day using a neuston net. Clare Murphy (UoW) Clare's project is looking at transect measurements of greenhouse gases in the marine atmosphere. (Extract from the voyage plan, please see plan for full details.)|