French EQUIPEX call / Equipment - Investments for the future• Duration: Feb 2011- Dec 2019 (9 years)
Strong coupling between ocean, sea-ice and atmosphere integrated approach: collection of simultaneous and real-time information
about the state of the upper ocean, lower atmosphere and arctic sea-ice complementary to
satellite observations: measuring parameters that are poorly or not retrieved from satellite measurements
numerical models, (ocean, meteo, chemistry) / data assimilation
Equipment : 40 platforms profiling through ocean, ice and atmosphere
ANR-10-EQPX-32-01
Christine Provost & Jacques Pelon LOCEAN/CNRS LATMOS/CNRS http://www.iaoos-equipex.upmc.fr
•Strategy
• Network of 15 autonomous drifting platforms operating at any given time during 5 years.
•Proposed spatial distribution.
•Expected life time : 2 years
• 6 new platforms every year (exit through Fram S., detroyed by ice ridges) >>> amounting to a total of 40.
•Logistics: 2 deployment periods per year
Based on instrumented surface buoys
Deployed on ice
Deployed on water
1.20 m diameter -deployment from twin-otters, ice breakers
carries GPS, Iridium, data logger, 2-year battery supply
Courtesy J.-C. Gascard
Platform
• Unattended, autonomous, real-time
• Ice and ocean measurements :
building upon technological developments and experience acquired during the 4th IPY, EU project Damocles, EU-project ACOBAR ( J.C. Gascard)
• Ice Mass Balance: IMB- SAMS J. Wilkinson (air, snow, ice, upper ocean) 6 m long chain- thermistors and heaters- 2 cm resolution
• Surface temperature and pressure sensors.
• Ocean profilers: 7 - 800m Argo technology (oil bladders and pump- changing flotation through volume changes). SME NKE
transmission to buoy through inductive link
Autonomous profiling : a big success
Precise information about mixed layer, halocline, water masses under halocline >>>>> heat flux from ocean to sea-ice /atmosphere
Vertical profiles of temperature and salinity observed in the Canadian basin (left) and in the Eurasian basin (right) .
Canadian basinWHOI ITP2
Eurasian Basin
SPW
WPW
AW
Cold HaloclineFresh layer
Atlantic Water
Thermocline
Ocean-Ice buoy deployed last April from the north pole (Barneo)
profiler and cable
Surface buoy in place SAMS IMB
• Buoy drifting towards Fram Strait• Recovery late August from KV Svalbard• Data from IMB : temperature
In the Arctic, mid-latitude pollution and natural aerosol interact with clouds modifying - the equilibrium between phases and
- radiative properties
not easily detectable from satellite
Need for complementary observations
Platform
• Unattended, autonomous, real-time
• Ice and ocean measurements : • Ocean profilers: 7 - 1000m POPs technology• Ice Mass Balance: IMB SAMS 2 cm resolution
• Atmosphere Jacques Pelon (LATMOS) (new development)Vertical structure and optical properties of boundary layer, haze, aerosols, clouds.
joint use of
• Microlidars (like ceilometers in airport technological challenge: T control, limited energy, optical window…) SME CIMEL
• Optical depth sensors (ODS) (in-lab development derived from an existing space version).
1 2 5 10 Example of particulate scattering ratio obtained with the new prototype from CIMEL (10 mn profile)
Alti
tude
(km
)
5
4
3
2
1
0
Solid-state Microlidar (905 nm)
BLayer
Elevated aerosollayers
Timeline :2012: - 1st ocean-ice buoy deployed from Barneo in April 2012 - Development and tests of atmospheric part – sensitivity-
Temperature control - optical window- - central data logger- inductive transmission 2013: First full IAOOS buoy deployment for tests –
IAOOS Partners
UPMC Coordinator ( LOCEAN & LATMOS)
Integration : DT-INSU
Data gathering, data center: IPEV + ICARE CORIOLIS
Instrument developers /providers : NKE (ocean), CIMEL (atmos), SAMS (ice)
ANR-10-EQPX-32-01
IAOOS Synergieshttp://www.iaoos-equipex.upmc.fr/