Post on 15-Jan-2016
description
Report of Activities from KielReport of Activities from Kiel
Claus Böning · Arne Biastoch · Joachim DenggClaus Böning · Arne Biastoch · Joachim Dengg
Wonsun Park · Sabine HüttlWonsun Park · Sabine Hüttl
Joke Lübbecke · Markus ScheinertJoke Lübbecke · Markus Scheinert
IFM-GEOMARIFM-GEOMAR
Model RunsModel Runs
ORCA05 CORE runs
• different restoring parameterizations
• different forcing variability
• different regional variability
ORCA025 CORE runs
• KAB001: 1958-2004 with polar 3D restoring and 2 tracers (CFC-11, SF6)
• KAB002: 1985-2004 with strong polar SSS restoring
Data stored on DODS-Server in Kiel Todo: authentification from outside, LAS
• Mechanisms of MOC variability in response to key mechanisms/regions
• Observability
MOC and Related Large-scale CirculationMOC and Related Large-scale Circulation
Arne Biastoch, Claus Böning, Joachim Dengg
Subpolar gyre transport variability and its reverberation in the MOC (Böning et al.,
2006)
Atlantic MOC Strength (36°N) in ORCA05
(Biastoch et. al, 2007)
full forcing variability
interannual wind variability onlyheat and freshwater
variability only
Influence of Freshwater on Subpolar North AtlanticInfluence of Freshwater on Subpolar North Atlantic
Markus Scheinert
• Freshwater balance in arctic and subpolar regions
• “Great Salinity Anomaly” events in CORE runs
Freshwater fluxes in 50-yr CORE runs
Freshwater balance in ORCA05
Tropical AtlanticTropical Atlantic
Mean pathways subtropics-tropics:
• Sources and role of the zonal current bands
• Connections to upwellingin the eastern tropical Atlantic
Interannual to decadal variability in the topical Atlantic
• Influence and role of the subtropical-tropical cell (STC)
• Connections to MOC variability in the North Atlantic
Sabine Hüttl
Tropical PacificTropical Pacific
Joke Lübbecke
Subtropical cells (ORCA05, ORCA025)
• Western boundary vs. interior transport
• Impact on SST
• Variability on interannual to decadal time scales
Lagrangian analysis of ORCA05 data focusing on pathways into STCs
(colloboration with K. Döös, Stockholm)
WBC vs. interior in ORCA05
ECHAM5/NEMO coupled modelECHAM5/NEMO coupled model
• KCM prototype with T31/ORCA2 resolution
• Two 500-yr simulations with difference atmosphere configurations:
• Stable climate
• Different ENSO dynamics
• Reasonable sea ice distribution
• Low MOC
• Cold bias over North Atlantic
Wonsun Park, Noel Keenlyside, Mojib Latif, Rene Redler
AgulhasAgulhas
Stalled due to
• Manpower Open Postdoc Position!
• Fundamental problems running AGRIF on NEC SX-8
Arne Biastoch
Australian ActivitiesAustralian Activities
Claus Böning