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Aquarius Validation Data System John Gunn 6 th Science Meeting Seattle, WA, USA 19-21 July 2010.

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Presentation on theme: "Aquarius Validation Data System John Gunn 6 th Science Meeting Seattle, WA, USA 19-21 July 2010."— Presentation transcript:

1 Aquarius Validation Data System John Gunn 6 th Science Meeting Seattle, WA, USA July 2010

2 July 2010 Aquarius Validation Data System (AVDS) - Gunn 6th Science Meeting, Seattle, WA, USA Introduction Objective: Collect appropriate in situ surface salinity data for comparison with Aquarius/SAC-D satellite surface salinity measurements and to make this data and associated matchups available to the user community at large. Near real-time in situ data is matched with satellite data coincident in time an space, within specified limits, for each radiometer horn. A closest point of approach (CPA) is calculated and compared with the in situ data. Aquarius Validation Data System

3 July 2010 Aquarius Validation Data System (AVDS) - Gunn 6th Science Meeting, Seattle, WA, USA Data Inputs Where do we get the data? GTSPP In-situ data sources GTSPP In-situ data sources GTSPP In-situ data sources GTSPP In-situ data sources

4 July 2010 Aquarius Validation Data System (AVDS) - Gunn 6th Science Meeting, Seattle, WA, USA Data Inputs Where do we get the data? GTSPP In-situ data sources GTSPP In-situ data sources GTSPP In-situ data sources GTSPP In-situ data sources Fixed moorings Surface drifters CTD profiles ARGO profile floats Research ships (TSG)

5 July 2010 Aquarius Validation Data System (AVDS) - Gunn 6th Science Meeting, Seattle, WA, USA AVDS Structure How is the data processed?

6 July 2010 Aquarius Validation Data System (AVDS) - Gunn 6th Science Meeting, Seattle, WA, USA AVDS Structure How is the data processed?

7 July 2010 Aquarius Validation Data System (AVDS) - Gunn 6th Science Meeting, Seattle, WA, USA CPA Comparison 1.44 sec Level 2 satellite data 1.44 sec Level 2 satellite data Schematic of single radiometer ground track and buoy CPA

8 July 2010 Aquarius Validation Data System (AVDS) - Gunn 6th Science Meeting, Seattle, WA, USA AVDS Web page Where is the data available?

9 July 2010 Aquarius Validation Data System (AVDS) - Gunn 6th Science Meeting, Seattle, WA, USA AVDS Web page Where is the data available?

10 July 2010 Aquarius Validation Data System (AVDS) - Gunn 6th Science Meeting, Seattle, WA, USA Database Access

11 July 2010 Aquarius Validation Data System (AVDS) - Gunn 6th Science Meeting, Seattle, WA, USA Database Access Detail

12 July 2010 Aquarius Validation Data System (AVDS) - Gunn 6th Science Meeting, Seattle, WA, USA Data Display Detail 150 lines of data on the screen, CSV file of all selected data available for download

13 July 2010 Aquarius Validation Data System (AVDS) - Gunn 6th Science Meeting, Seattle, WA, USA In situ Data vs Sat Matchup Red= in situ positionBlack circle = Sat CPA

14 July 2010 Aquarius Validation Data System (AVDS) - Gunn 6th Science Meeting, Seattle, WA, USA Salinity Differences Histogram of in situ Salinity minus CPA salinity For March 6, 2007 Input data are actual in situ data and 2007 year long simulation salinity data

15 July 2010 Aquarius Validation Data System (AVDS) - Gunn 6th Science Meeting, Seattle, WA, USA Summary AVDS web page available for preliminary testing. Near surface ARGO data used for prelaunch and 2007 periods. Temporary login name and password is “avds” for both. Future version will include CPA calculation and matchup data for modeled data. Send comments and suggestions to


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