Use of GlobWave data by the Royal Australian Navy

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1 Use of GlobWave data by the Royal Australian Navy Martin Rutherford Director Maritime Military Geospatial Information Hydrography and METOC Branch Royal Australian Navy 07 November 2012

2 Outline Anti Piracy Near-real time Web Services Wave Model Validation Investigating Maritime Incidents Climatology Ship Routing Cross-Seas

Anti-Piracy GlobWave data used to find the

3 Anti-Piracy GlobWave data used to find the significant wave height at the time of each reported piracy attack Initial study in 2010 looked at Study repeated using GlobWave GDR in 2011 Recent study by NZ looked at Over 440 match-ups used for analysis

4 Analysis of Previous Pirate Events

5 Analysis of Previous Pirate Events

6 Analysis of Previous Pirate Events

7 Analysis of Previous Pirate Events

8 Analysis of Previous Pirate Events

9 CTF150 Support

10 Near-Real time Web Services Prototype Service only Planned for operational release when CryoSat-2 near real-time becomes available. ftp pull from GlobWave, then loaded into ESRI ArcGIS Server Published as a WMS Plan to make a rolling past 24 hours data available

11 Near-Real time Web Services

12 Wave Model Verification Wave models do not assimilate altimeter observations. Important tool for gaining confidence in the wave forecast for wave dependant maritime activities

13 Wave Model Verification

14 Wave Model Verification

15 Wave Model Verification

16 Wave Model Validation 2 1 3

17 Investigating Maritime Incidents On 15 December 2010 a boat (later designated SIEV- 221) floundered in heavy seas and was washed onto rocks at Christmas Island resulting in the loss of 48 lives. A further 42 people were saved. The RAN was central to the rescue attempts and subsequent inquiries. On such a small and isolated island in the Indian Ocean, very few in-situ wind and wave observations were available and satellite remotely sensed observations were relied upon.

18 Investigating Maritime Incidents

19 Investigating Maritime Incidents

20 Investigating Maritime Incidents

21 Investigating Maritime Incidents

22 Investigating Maritime Incidents

Climatology Two climatologies created from Altimeter

under consideration, but insufficient data to be

have allowed some unrealistic values to be included

23 Climatology Two climatologies created from Altimeter data Mean SWH Max SWH Swell climatologies currently under consideration, but insufficient data to be statistically significant until ERS- 1 and ERS-2 data are released. Additional QC performed as the GlobWave QC and flags have allowed some unrealistic values to be included with flags suggesting the data is good. No optimal interpolation used, just simple binning of the data.

24 Climatology

25 Climatology

26 Climatology Sig. Wave Height

27 Climatology Sig. Wave Height Histograms

28 Climatology Sig. Wave Height Histograms

29 Ship Routing Case Study The Royal Australian Navy recently took delivery of the hull of a new ship, which was transported on a heavy lift carrier from Northern Spain. When considering the timing and route to be taken, GlobWave date was used. Instead of the simplistic mean and maximum climatologies an interactive site was used to allow planners to explore different routes. The data was published using ArcGIS Online and simply clicking anywhere on the screen displayed the statistics and a histogram of observations.

Ship Routing Case Study Two months of the data is still in the public domain at: http://bit.

30 Ship Routing Case Study Two months of the data is still in the public domain at: To use: Click on Show Contents (top left, second button) Click on GlobWave Climatology under the Contents The mean and max are rasters only./ Click on the Sea State data Now click anywhere on the map and the statistics and a histogram will be displayed Route planners used the tool to determine the optimum time to sail; before the early autumn storms, through the Atlantic and across the southern Indian Ocean after winter storms and before cyclone season.

31 Cross Seas A detailed study of the sea state to the NW of Australia was initiated after Navy patrol vessels reported worse conditions than expected and resulted in slight damage and fatigue to some platforms. Preliminary analysis suggests that the area is frequently subject to cross seas, either due to the wind driven seas being in a different direction to the swell, or two significant swell having different directions and, on occasions both occurring. This led to a broader study of where sea and swell (Type 1), two swells (Type 2) and combined (Type 3) cross seas exist.

32 Cross Seas

33 Cross Seas

34 Cross Seas

35 Cross Seas

Summary The Royal Australian Navy has derived significant benefit from GlobWave across a range of activities from planning and supporting operations and verifying wave models to

36 Summary The Royal Australian Navy has derived significant benefit from GlobWave across a range of activities from planning and supporting operations and verifying wave models to understanding the maritime environment and its impacts. The Globwave data is easy to access and use, relatively error free (data that slips through the QC is easy to trap and clean).

37 A Wish List Publish ERS1 and ERS2 SAR data Publish Cryosat-2 in NRT mode Apply more rigorous QC and fill in missing additional fields Publish algorithm(s) for deriving wave period from backscatter

38 Questions and comments to: Martin Rutherford

Project GlobWave. User Meeting 5 th -6 th October, Geoff Busswell, GlobWave Project Manager

Project GlobWave. User Meeting 5 th -6 th October, Geoff Busswell, GlobWave Project Manager Project GlobWave User Meeting 5 th -6 th October, 2011 Geoff Busswell, GlobWave Project Manager www.globwave.info Partners ESA: Funding the project through its Data User Element Programme CNES: Providing