final general assembly

Final General Assembly – Paris, France – September 19, 2014

FP7-Infra-2011-2.1.1 : Design studies for European Research Infrastrutures

1st October 2011 – 31st December 2014

Duration 39 months – Periods : 2 (month 18 – month 39)

Grant Agreement No: 284321 ; Total budget : 3,5 M€

http://www.groom-fp7.eu

19 partners from cy, de, fr, gr, it, no, es, uk

"Gliders for Research, Ocean Observation and Management"General Assembly

http://www.groom-fp7.eu/


WP 4 Targeted Experiments

WP leader Karen Heywood (UEA)presented by Jan Kaiser (UEA)

Contributors UPMC, SAMS, NERC, FMI, UEA, IFM-GEOMAR, PLOCAN, UIB, AWI, UCY, NURC, OGS, CNRS, CSIC, HCMR


WP1 Project

S/T Coordination

WP4 Targeted

Experiments

WP5Observatory

Infrastructure

WP3 Scientific

Innovation

WP2 Integration in the GOOS

WP2.1 Assessment

of a glider component in the GOOS

WP2.2 Legal framework

WP2.3 Financial framework

WP3.3Capacity building

and training, outreach

WP3.2Data flow

and processing

WP3.1New contributions

of glider for marine research

WP4.2Fleet missions

WP4.1Endurance lines

WP5.3Mission planning

and analysis

WP5.2Glider payload

assessment

WP5.1Ground segment

description

WP1.1Project coordination

WP5.4Estimated

setup and running costs

WP1.2Internal & external

communication

WP4.3Synergies

with other platforms

WP6 Project

Management


WP4 Targeted Experiments

• Targeted deployments of gliders to assess glider capability in the context of GROOM

• Deployments in challenging environments contribute to other WP assessments

• We undertake in situ tests of protocols and data management developed in other WP


WP 4 Targeted ExperimentsTask 4.1: Endurance lines (includes trials of glider capability to do long-lasting repeat sections or virtual moorings)

Task 4.2: Fleet missions(includes deployments to assess challenges of operating multiple gliders and optimising survey design)

Task 4.3: Synergies with other platforms(includes experiments to assess how gliders can complement floats, moorings, VOS etc)


WP1 Project

S/T Coordination

WP4 Targeted

Experiments

WP5Observatory

Infrastructure

WP3 Scientific

Innovation


WP2.1 Assessment






WP3.2Data flow

and processing



WP4.2Fleet missions



and analysis

WP5.2Glider payload

assessment

WP5.1Ground segment

description


WP5.4Estimated



communication

WP4.3Synergies


WP6 Project

Management


Task 4.1: Endurance lines (includes trials of glider capability to do long-lasting repeat sections or virtual moorings)

responsible person: Laurent Beguery, CNRScontributors: UPMC, SAMS, NERC, FMI, UEA, IFM-GEOMAR, UIB, AWI, UCY

• plan, execute and review trials of glider capability to undertake long-lasting repeat sections and to maintain virtual moorings.

• include challenging marine environments, to lay foundations for using gliders in the ocean observing system.


D4.1 Assess how existing hydrographic endurance line can be supported by glider infrastructure [complete; lead: David Smeed]

D4.2[new] Undertaking and assessing glider deployments as components of GOOS according to GROOM standards [in progress; lead: Johannes Karstensen]

formerly:D4.2 Deployments of European gliders in ROOSes that conform to GROOM standardsD4.3 Endurance line test considering GROOM standards (gliderport, sensor calibration, data delivery, RTQC input)D4.7 Test and analysis of glider/float/mooring missions for GROOM standards

Deliverables of Task 4.1


WP 4.1 / D4.1The role of gliders in sustained

observations of the ocean

David Smeed (NOC), presented by Jan Kaiser (UEA)


Sustained ocean observations

• Motivation• Opportunities and challenges for glider

technology• Examples of sustained observations from

gliders• Conclusions


Motivation

• CLIVAR program: "Maintain over many decades a sustained ocean observing system capable of detecting and documenting global climate change".

• Long-term perspective for climate research• Long-term monitoring is a fundamental

requirement of the European Union (EU) Marine Strategy Framework Directive (MSFD).


Sustained sub-surface observations

• Repeat sections, either hydrographic sections by research vessels; XBT sections from vessels of opportunity

• Fixed observatory sites – e.g. hydrographic data at Ocean Weather Ship Station (OWS) Mike in the Norwegian Sea since 1948.

• ARGO network of profiling floats


GO-SHIP reference sections


EuroSITES fixed point observatories


The ARGO programme


Opportunities and challenges for glider technology

• growing range of oceanographic sensors • Argo profiling floats cannot sample at specific

locations and little data is obtained on the continental slope

• GROOM partners have tested the capability of gliders to make sustained observations.


• To provide more frequent sampling than is possible with available ship-time or budget.

• To obtain data with higher spatial resolution.

• To obtain data in real-time for data assimilation and for increased data security.

Why use gliders?


• 11 projects run by GROOM partners in which gliders were trialed or are regularly used for sustained observations.

• In some cases, glider have replaced other platforms or enabled new programs to start

• But there are some cases where gliders were found to not yet be suitable or cost effective.

Sustained observations by gliders in GROOM


• Advantages– more frequent sampling per ship-time and budget– higher spatial resolution.– real-time data for assimilation and more data

security• Disadvantages

– navigation in strong currents difficult– reliability– additional resources required– risks of collision with vessels

Conclusions from GROOM missions


• ships observations were biased to the summer months (see plot below)

• now: 3 years of quasi-continuous glider observations

Example 1: The Balearic Channels in the western Mediterranean


• RAPID requires continuous data, and the reliability of gliders was not sufficient to replace the moorings.

• Gliders effective for measuring near surface / very difficult with moored instruments

Example 2: RAPID project at 26° N


The use of gliders is most successful when• gliders can completely replace other platforms

(e.g. Balearic Channel)• there is easy access to deployment and

recovery sites close to shore (e.g. Balearic Channel)

• it is only required to sample the upper 1000 m (e.g. shallow thermocline in the Mediterranean Sea; Ruiz et al., 2012).

Conclusions 1


Types of sustained observation for which gliders are particularly well suited:• real-time data thanks to glider data

telemetry • continental slope where Argo data are rare• near surface where moored instruments

are difficult to use

Conclusions 2


Future needs include• improved reliability (cf. APEX floats)• increased depth capability (but: implies

reduced repeat sampling frequency)• increased endurance to make larger parts

of the ocean accessible from individual glider ports

Conclusions 3


WP1 Project

S/T Coordination

WP4 Targeted

Experiments

WP5Observatory

Infrastructure

WP3 Scientific

Innovation


WP2.1 Assessment






WP3.2Data flow

and processing



WP4.2Fleet missions



and analysis

WP5.2Glider payload

assessment

WP5.1Ground segment

description


WP5.4Estimated



communication

WP4.3Synergies


WP6 Project

Management


Task 4.2: Fleet missions

responsible person: Alberto Alvarez contributors: NURC, UPMC, OGS, IFM-GEOMAR, CNRS, CSIC

• plan, execute and review trials of missions involving a fleet of at least 3 gliders simultaneously.

• define optimal sampling strategies (for example, glider swarms, how can we sample an eddy more efficiently with 2 gliders, 3 gliders or more).

• test auto piloting programmes, adaptive sampling strategies and OSSEs


D4.4 Field trial of a multi-glider campaign and dossier of lessons learned [complete; lead: Alberto Alvarez ]

D4.5 Evaluation of prototype glider fleet mission planning tool [complete?!; lead: Laurent Beguery]



• piloting system worked well• environmental constraints (strong

currents) remain limitation for gliders• in future:- test automated pilot alarm system

during glider malfunctions

D4.4 Results


WP1 Project

S/T Coordination

WP4 Targeted

Experiments

WP5Observatory

Infrastructure

WP3 Scientific

Innovation


WP2.1 Assessment






WP3.2Data flow

and processing



WP4.2Fleet missions



and analysis

WP5.2Glider payload

assessment

WP5.1Ground segment

description


WP5.4Estimated



communication

WP4.3Synergies


WP6 Project

Management


Task 4.3: Synergies with other platforms

Responsible person: Carlos Barrera , PLOCANcontributors: FMI, UEA, NERC, HCMR, OGS, UIB, GEOMAR, UCY, NURC, UPMC

• trial new sensors on gliders (linked with WP5) to assess their capability (for example, carbon cycle, turbulence, nutrients).

• compare different design strategies for gliders with Argo floats, moorings and ship-board studies

• compare sensor behaviours for each technique compared. • test synergies between gliders and other components of the

global ocean and coastal observing systems. • demonstrate the in-field calibration protocols developed in WP5.2

(sensor payloads).


D4.6 Field trials of new sensors for gliders: New sensors for gliders are e.g. optics, video, acoustics [complete; lead: Fabrizio D'Ortenzio] D4.8 Report on the acoustic component in glider observatory [complete; lead: Agnieszka Beszczynska-Moeller]



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• 780 Hz RAFOS sources better than 260 Hz• choice of source manufacturer important• in future:- use tomographic sources- improve positioning algorithm- reduce energy consumption

D4.8 Results

final general assembly – paris, france – september 19, 2014 fp7-infra-2011-2.1.1 : design...

Documents

project coordination

analysis wp5

goos wp2 integration

glider payload assessment

targeted experiments

endurance lines wp5

outreach wp3