oceancurrent david griffin, madeleine cahill, jim mansbridge, jeff dunn, edward king
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OceanCurrent
David Griffin, Madeleine Cahill,
Jim Mansbridge, Jeff Dunn, Edward King
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The only way to measure sea level and velocity routinely all around Australia is by combining altimetry with tidegauges.
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Sea level, velocity, chl-a and temperature provide three complementary views of the ocean
OceanCurrent uses synoptic and in-situ data to provide quick-looks of ocean conditions
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2011-12: start
• Commenced August-Sept 2011• Renovate, prune, re-organise & re-brand CMAR RS web site• Move all content to AODN (new content is added using rsync)• Altimetry-derived data sets submitted daily to EMII. Exposed
instantly. http://opendap-vpac.arcs.org.au/thredds/catalog/IMOS/OceanCurrent/GSLA/NRT00/2012/catalog.html
• News Items (Ocean and Technical) posted opportunistically
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2011-12: Dec 2011 milestone
• Switched to using the L3U single-pass SST imagery produced for IMOS by BoM
• http://aodaac2-cbr.act.csiro.au:8080/thredds/catalog/imos/GHRSST/L3U/catalog.html
• This enabled high-res zooms for Esperance, GAB, Tasmania
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2011 – other progress
• Switched to using the NOAA Radar Altimetry Database System (RADS) – keeps us up-to-date with the latest corrections, for all altimeters
• Started including Cryosat altimeter in near-real-time analysis on 9 Dec 2011. The earned us a mention on the ESA News page.
• http://www.esa.int/esaCP/SEMI2KBX9WG_index_0.html
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Latest 18 days of Cryosat data
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Latest 7 days of Jason-2 data
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Latest 10 days’ data from 4 altimeters
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Each feature has a story to tell
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2011-12: work still in progress
• Using the IMOS L3S SST 3-day (day-only and night-only) composite produced by BoM as well as the CMAR composites
• Presently only showing the latter. Problem with cloud-flagging of night-time L3S has now been found.
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L3S 3-day SST composite (weighted mean) 3 nights (QL>=3) 3 days
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CMAR 3-day composite (65th percentile of all ‘good’ data)
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2011-12: what’s next
• March 2012: show IMOS chl-a on website• June 2012: new sea level analysis system (some elements in
place already)• minor requests, e.g. archive of single-pass-SST fli-animations
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2012-13: plans
• Sept 2012: show other IMOS data, e.g. gliders, SOOP, radars, moorings
• Dec 2012: News Items now regular• March 2013: Hindcast (1992-2011) altimetry-based products
lodged with EMII• June 2013: website in final form.
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Thank you
• Requests / questions / suggestions / complaints / offers?• http://www.altimetry2012.org• http://imos.aodn.org.au/oceancurrent/
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Sea level + SST = T(z)
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Eg present push is towards the coast.Correlation of Esperance with PISTACH Jason-2:
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cf standard IGDR version of Jason-2 data:
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