Decoding peculiarities in the Fram Strait environment

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Lauren Wheeler
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1 Decoding peculiarities in the Fram Strait environment Presenter: Jenny Ullgren Acous2cs and Oceanography Group Hanne Sagen (group leader), Agnieszka Beszczynska-Möller, Brian Dushaw, Eva Falck, Florian Geyer, Halvor Hobæk, Gaute Hope, Lisbeth Iversen, Stein Sandven, Espen Storheim

2 The Fram Strait Gateway to the Arctic Ocean West Spitsbergen Current East Greenland Current 'Return Atlan2c Current' Langehaug and Falck, 2012

3 What is special about the Fram Strait? Transi2on from open ocean to ice-covered areas High meso- and small scale variability uncertainty in large scale transport es2mates Beszczynska-Möller et al., 2012

4 Observation platforms Satellites Moorings Autonomous pla[orms Large areas Fast Surface Variables

5 Observation platforms Satellites Moorings Autonomous pla[orms Satellite image by Mohamed Babiker

$h\p://www.argo.ucsd.$ platforms Satellites

$pla[orms h\p://www.$

6 h\p:// Observation platforms Satellites Moorings Autonomous pla[orms h\p://

7 Observation platforms Satellites Moorings Autonomous pla[orms M. Hoppmann, M. Nicolaus, B. Rabe, A. Nicolaus, D. Scholz, C. Katlein (AWI) Photo: A. Beszczynska-Möller

Seaglider @ield experiment 2008-2012 Physical oceanography Under-ice naviga2on Total # successful dives:

8 experiment Physical oceanography Under-ice naviga2on Total # successful dives: 2223 Distance covered: 8859 km Project ACOBAR - Acous2c technology for observing the interior of the Arc2c Ocean

9 Seaglider depth averaged current Depth average current vectors from all 8 Seaglider missions Currents from each mission averaged over 1 longitude bins Dives <400 m and bins with <15 dives are not included Steady northward current in the east: WSC Wide recircula2on zone offshore

Iskantseilas A voyage in the Fram Strait in summer 2016 with two small unmanned sailboats (SailBuoy) Work foci: Mechanical adaption Integration of data collection system Anti-fouling Data usage

10 Iskantseilas A voyage in the Fram Strait in summer 2016 with two small unmanned sailboats (SailBuoy) Work foci: Mechanical adaption Integration of data collection system Anti-fouling Data usage Funded by the Regional Research Fund - industrial research project Inger Graves, David Peddie, Rune Hauge, Geir Pedersen, Anders Tengberg, Hanne Sagen, Asuka Yamakawa field assistance: Jeong-Won Park, Espen Storheim

11 The SailBuoy Ocean Vehicle (OAV) hap://

moorings for UNDER-ICE/NICE projects -deploy 2 SailBuoys for Ice

12 SailBuoy voyage, summer 2016 Research cruise on board Norwegian Coastguard vessel KV Svalbard June-July Main objec2ves: -recover moorings for UNDER-ICE/NICE projects -deploy 2 SailBuoys for Ice edge voyage project -underwater acous2cs experiments Photos: Håkon Kjøllmoen

13 Two SailBuoys deployed from KV Svalbard on 30 June: Ocean Acidifica2on Vehicle (SB Iskant) Echo sounder SailBuoy (SB Nexos) SailBuoy voyage, summer 2016 Photos: Espen Storheim

$The SailBuoy can manoeuvre in wind speeds of 3-20 m/s Satellite image prepared by Mohamed Babiker Fair weather and very li\le wind for most of the 2016$

14 SailBuoy voyage, summer The SailBuoys were remotely steered from shore Aim: repeated transects near ice edge Ice condi2ons carefully monitored The SailBuoy can manoeuvre in wind speeds of 3-20 m/s Satellite image prepared by Mohamed Babiker Fair weather and very li\le wind for most of the 2016 deployment

$The SailBuoy can manoeuvre in wind speeds of 3-20 m/s Satellite image prepared by Mohamed Babiker Fair weather and very li\le wind for most of the 2016$

15 SailBuoy voyage, summer The SailBuoys were remotely steered from shore Aim: repeated transects near ice edge Ice condi2ons carefully monitored The SailBuoy can manoeuvre in wind speeds of 3-20 m/s Satellite image prepared by Mohamed Babiker Fair weather and very li\le wind for most of the 2016 deployment

$The SailBuoy can manoeuvre in wind speeds of 3-20 m/s Satellite image prepared by Mohamed Babiker Fair weather and very li\le wind for most of the 2016$

16 SailBuoy voyage, summer The SailBuoys were remotely steered from shore Aim: repeated transects near ice edge Ice condi2ons carefully monitored The SailBuoy can manoeuvre in wind speeds of 3-20 m/s Satellite image prepared by Mohamed Babiker Fair weather and very li\le wind for most of the 2016 deployment

17 Complementary data Water samples from deployment and recovery to be analyzed for DIC and alkalinity. Profiles with hand-held CTD taken at recovery. XBT sections along KV Svalbard cruise track. Satellite data: Winds, surface current field, ocean colour, SST... Photo: Espen Storheim

$in temperature and salinity Echo sounder data Stored locally, not transmi\ed.$

18 Sailbuoy OAV sensors Preliminary days Crossing marked boundaries in temperature and salinity Echo sounder data Stored locally, not transmi\ed.

Clear, expected an2- correla2on between O 2 and pco 2 pco 2 and ph Preliminary results Observed ranges: O 2 287-347 µm

19 Clear, expected an2- correla2on between O 2 and pco 2 pco 2 and ph Preliminary results Observed ranges: O µm pco µatm ph T air C T water C Salinity Figure and analysis by Anders Tengberg

Initial data quality control performed by Anders Tengberg Data from all sensors seem to be of high quality ph has an ini2al stabiliza2on 2me of about 1 day All temperature sensors

20 Initial data quality control performed by Anders Tengberg Data from all sensors seem to be of high quality ph has an ini2al stabiliza2on 2me of about 1 day All temperature sensors agree well Next step: analysis Good resolu2on of ph and pco 2 No sign of driv in oxygen optode Reference data needed to adjust absolute values of ph and pco 2 to determine if there was driv

21 Thank you! The scien2ﬁc party (WHOI, IOPAN, NERSC) on KV Svalbard July 2016 Photo: Håkon Kjøllmoen 30 YEARS IN SCIENCE

R3M: The 2.0 Ocean Observation Strategy for the Macaronesian region

R3M: The 2.0 Ocean Observation Strategy for the Macaronesian region OUTLINE Where? Who? What? Why? What else? Where? Where? Where? European Station for Time-series in the OCean (ESTOC). Since 1992 60 Nm