Perspec ectives es from om t the FOO Surf rface Waves Work - - PowerPoint PPT Presentation

Perspec ectives es from

• m t

the FOO Surf rface Waves Work rking Group

Mark Hemer (CSIRO) Alex Babanin (Univ. Melb) Paul Boswood (Qld DSITI) Diana Greenslade (BoM) Jess Kolbusz (Carnegie) Ryan Lowe (UWA) Daryl Metters (Qld DSITI) Tim Moltmann (IMOS) Roger Proctor (IMOS) Emma Sommerville (IMOS) Craig Steinberg (AIMS) Greg Williams (RPS MetOcean)

Following FOO 2015

• Many reasons identified at FOO2015 motivating

formation of the FOO SWWG

• Source of error in swell
• Combining spectral and phase-resolving wave models
• Ocean (vs lake) observations to inform source-term

development

• Shallow water bathymetry for nearshore waves
• Group held first meeting in February 2016, with 4

meetings since.

Group Discussions

• Have focussed predominantly on data availability to

support Australia’s marine community

• Review of National Marine Science Plan white-papers -

Waves feature in three chapters:

• Energy Security
• Dealing with Climate Variability and Change
• Sovereignty, Security and Natural Hazards
• Summarised as:
• Wave obs are patchy in space, time, quality; there is a need

for a standardised, centralised repository

• Many stakeholders can utilise wave obs, and access and

analysis offers economic benefits

• Models (forecast and hindcast) need validation with obs for

credibility; forecasts and hindcasts are suffering from lack of

• bs.

Australia’s in-situ wave observing network

Network not centralised Each custodian has variations of:

• Sampling strategy
• Analysis & QA/QC procedures
• Archived variables.

Qld DSITI NSW OEH/MHL ESSO BoM WA DoT PPA Woodside

Public Industry (RPS QC wind/wave)

Australia’s wave observing network

+SOTS (Triaxys, MRU)

BoM

IMOS ANMN NRS & ACORN WERA HF Radar Sites

Darwin NRS (ADCP) Yongala NRS (ADCP) Maria Is NRS (MRU) Nth Strad NRS (MRU)

SRS Wave Measurements

GEOSAT ERS-1 TOPEX ERS-2 GFO-1 JASON-1 ENVISAT JASON-2 CRYOSAT SARAL JASON-3 SENTINEL-3A SENTINEL-1A SENTINEL-1B SENTINEL-1C SENTINEL-3B SENTINEL-3C NISAR

Altimeters

CFOSAT/SWIM SKIM?

84 86 88 90 92 94 96 98 00 02 04 06 08 10 12 14 16 18 20 22 24 26 28

New IMOS SRS Waves sub-facility

SWOT

Altimeters + SAR

SAR Other

Wave platform inter-comparisons

• Many new platforms now available for wave measurements
• AIMS, Qld DSITI & Scripps and other interested partners

propose to inter-compare existing and emerging platforms:

Coastal arrays of waverider buoys Drifters &/or tethered buoys Wave capable ADCPs in coastal locations (e.g. Yongala, Darwin NRS) Ocean Surface RADARs Satellite Altimeters (SWOT) WaveGlider (2018 Townsville-Hobart)

Australian Wave Model Datasets

Operational

• BoM AUSWAVE-G, AUSWAVE-R
• Industry

Hindcasts

• CAWCR Wave Hindcast (1979-present; Durrant et al.,

2014; Hemer et al., 2017)

http://dx.doi.org/10.4225/08/523168703DCC5 Atlas: http://www.nationalmap.gov.au/renewables

• NSW OEH (1979-2016)
• Other Service Provider models

Many other regional models Wave climate projections

Identifying gaps in wave observation network

(Greenslade et al. in prep)

• Possibility for new wave buoy

supported via IMOS (project provisionally accepted)

• In order to identify significant gaps in

existing network, the spatial coherence

• f the wave field needs to be

considered

• Spatial coherence determined using

CAWCR wave hindcast

• For every grid point in hindcast,

calculate correlation between (modelled) mean monthly wave height at that location, and (modelled) mean monthly wave height at all buoy locations

• Repeated for Tm and Dm

Maximum Correlation Area represented by each buoy

Considerations

The SWWG has focused on observation coverage. Little consideration (to date) has been given by group to distinguishing:

• Application of the data (e.g., offshore or coastal infrastructure, public

safety, weather forecasting, research, etc)

• Real-time &/or availability
• Temporal coverage (Historical, Continuous, Seasonal or ‘spot’)
• Data-quality (Raw, QA’ed, computer QCed, or expert QCed data)

Wave observation Information Flow

• Satellite Remote Sensing

(Altimetry and SAR)

• Directional Wave Buoys

Global and Regional Wave Prediction

• Safe & Efficient Maritime
• perations
• Natural hazards
• Search & Rescue
• Climate (air-sea int)
• Remotely Sensed

(Altimetry, SAR, HF Radar)

• Directional Wave Buoys
• Bottom mounted wave &

current sensors Nearshore Wave Prediction

• Public health
• Coastal Engineering
• Planning and Design
• Directional Wave Buoys
• Bottom mounted wave &

current sensors Surf Zone Wave & Current Prediction

• Beach safety (e.g., rips)
• Public Health
• Natural Hazards

(flooding/erosion)

• Beach Surveys & Mapping

Sediment Transport Prediction

• Beach Change
• Coastal Evolution with

Climate Change Offshore & Outer Shelf Inner Shelf & Coastal Surf Beach

Observations Models Societal Goals

Adapted from IOOS Operational Wave Observation Plan (2008)

Information Flow

Wave observation Information Flow

• Satellite Remote Sensing

(Altimetry and SAR)

• Directional Wave Buoys

Global and Regional Wave Prediction

• Safe & Efficient Maritime
• perations
• Natural hazards
• Search & Rescue
• Climate (air-sea int)
• Remotely Sensed

(Altimetry, SAR, HF Radar)

• Directional Wave Buoys
• Bottom mounted wave &

current sensors Nearshore Wave Prediction

• Public health
• Coastal Engineering
• Planning and Design
• Directional Wave Buoys
• Bottom mounted wave &

current sensors Surf Zone Wave & Current Prediction

• Beach safety (e.g., rips)
• Public Health
• Natural Hazards

(flooding/erosion)

• Beach Surveys & Mapping

Sediment Transport Prediction

• Beach Change
• Coastal Evolution with

Climate Change Offshore & Outer Shelf Inner Shelf & Coastal Surf Beach

Observations Models Societal Goals

Adapted from IOOS Operational Wave Observation Plan (2008)

Information Flow

See Ian Young’s Keynote@1510 See Aihong Zhong’s talk@1600 See Jeff Hansen’s talk@1740

Concluding Remarks

• After FOO2015, The FOO SWWG was established. If ongoing,

stronger industry representation would be welcomed

• Initial priorities focussed on R&D physical challenges for wave

community.

• Discussions have focussed on obs coverage, with a need to still

identify what is needed to address FOO challenges

• Priorities of the FOO SWWG (or Australian Community with

Wave interests) have not been resolved – but need to be.

• Next steps: collaborative research priority setting for waves in

Australia 1st step - solicit research questions from influencers (r&d, service providers, industry, users, policy-makers, funders,…) via multiple channels. Starting now…

Opportunity for waves community to identify and discuss priorities is upcoming later in 2017 Register interest/ Submit abstract before Aug 18 to 3windwaves-oceans@uwa.edu.au