French EQUIPEX call / Equipment - Investments for the future Duration: Feb 2011- Dec 2019 (9 years) Strong coupling between ocean, sea-ice and atmosphere.

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/