Transcript iaoos - MOSAiC

ANR-10-EQPX-32-01
 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
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
1.20 m diameter -deployment
from twin-otters, ice breakers
Courtesy
J.-C. Gascard
carries GPS, Iridium, data logger,
2-year battery supply
Deployed on water
Platform
• Unattended, autonomous, real-time
• Ice and ocean measurements :
building upon technological developments and experience
acquired during the 4th IPY, EU project Damocles, EUproject ACOBAR ( J.C. Gascard)
•
Ice Mass Balance: IMB- SAMS J. Wilkinson
(air, snow, ice, upper ocean)
6 m long chain- thermistors and heaters2 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) .
SPW
Fresh layer
Cold Halocline
WPW
Thermocline
Atlantic Water
AW
Canadian basin
WHOI ITP2
Eurasian Basin
Surface buoy in place
SAMS IMB
Ocean-Ice buoy deployed last April
from the north pole (Barneo)
profiler and cable
• 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).
Solid-state Microlidar (905 nm)
5
Altitude (km)
4
Elevated
aerosol
layers
3
2
1
BLayer
0
1
2
5
10
Example of particulate scattering ratio
obtained with the new prototype
from CIMEL (10 mn profile)
Timeline :
ANR-10-EQPX-32-01
2012: - 1st ocean-ice buoy deployed from Barneo in April 2012
- Development and tests of atmospheric part – sensitivityTemperature 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)
IAOOS Synergies
http://www.iaoos-equipex.upmc.fr/
- EU ACOBAR (http://acobar.nersc.no/) led by NERSC (technology/logistics) end 2012
- EQUIPEX NAOS (http://www.naos-equipex.fr/) led by IFREMER,
WP Arctic led by M. Babin (Takuvik, Canada). Bio-optical floats “PROVBIO”: CTD + O2,
Nitrate, irradiance (412,490,555nm), CDOM, Chl-a, backscattering (530nm), attenuation
(660nm)
- EU My-Ocean : operational ocean-ice models (http://www.myocean.eu.org/)
WP Arctic – Harmony on ice – L. Bertino NERSC, G. Garric Mercator
- EU ACCESS: Arctic Climate Change Economy and Society (http://www.access-eu.org/)
led by J.C. Gascard. WP1: Climate change and the Arctic Environment - R. Gerdes (AWI)
- MOSAIC / AIDA : IAOOS providing some spatial/temporal background
(atmos+ CTD+ Ice)
Adding biogeochemistry? CO2, nutrients, PH, O2