Observatory # 23Filchner – Ronne

Weddell Sea Antarctica

Svein ØsterhusUNI Climate

www.folk.uib.no/ngfso

Observatory # 23 Weddell Sea

Observatory # 23 CHARACTERISTICS

“S2” provide Transnational Access (TNA) to the World Oceans Coldest water - the Filchner-Ronne Ice Shelf Water (ISW), Weddell Sea, AntarcticaObservatory # 23 “S2” is situated in the core of the ISW at the shelf break

Filchner-Ronne

Shelf break

Observatory # 23 DATA/SERVICES Time series with the lowest temperature of the World Oceans (Site-5) and the

longest oceanographic time series from Antarctica (S2)

Time series of current, salinity and dissolved oxygen

New S2 mooring to be deployed in Jan 2014To be serviced in 2016

Existing S2 mooring

1977 - 2009 (the BIAC system) - 2013 (the WEDDELL system) - 2020

Observatory # 23 FUTURE PLANS

C o ntro lle r a nd Dua l Sa te llite Lin

k

Sa linity, Tem p e ra ture a nd Pre ssure (CTP) S

e nso r

Anta rc tic a

Atla ntic O c e a n

Ic e She et

Pa c ific O c e a n

Wed d ell Se a Ross Se a

C urre nt M e te rIFIX

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The Site 5 Observatory on the Ronne Ice Shelf will be redeployed in 2014/15

Design criteria :• Service interval 5 + years• Deployment period: 10+y• Temperature range 0 to -50 °C• Ice thickness: 800 m• Sampling rates 1 h• Real time data transmission via satellite • Sensors for Ocean, ice shelf and atmospheric

measurements

Observatory # 23FUTURE PLANS

4 00 0

3 00 0

2 00 0

1 00 0

1 00 0

5 00

R O N N EIC E S H E L F

B E R K N E R IS L A N D

F IL C H N E RIC E S H E L F

5 00

5 00

5 00

?

Site-5

UNI Research /UIB will extend the S2 (ISW) observatory (establert in 1977). Two new IPY-BIAC instrumented platform will be deployed in January 2014 (Polarstern cruise 2013/14)

BAS & UNI Research will in 2014/15 re-etablate cable observatory Site 5 underneath the 800 m thick Ronne ice shelf

Svein ØsterhusUNI Research AS - UNI Klima

www.folk.uib.no/ngfso

S2

Observatory # 23 FUTURE PLANS

Confused?

Please ask! Svein Østerhus

E-mail: Svein.Osterhus@uni.noSKYPE: svein.osterhuswww.folk.uib.no/ngfso