Publikationen Köhl
- Jahr
- : Publikationstyp
- : Autor
- : Titel
A comparison of two ensemble generation methods using oceanic singular vectors and atmospheric lagged initialization for decadal climate prediction
Marini, C.; Polkova, I.; Köhl, A.; Stammer, D.. “A comparison of two ensemble generation methods using oceanic singular vectors and atmospheric lagged initialization for decadal climate prediction ”. Monthly Weather Review 144 (7). (2016): S. 2719-2738.doi: 10.1175/MWR-D-15-0350.1
A MITgcm/DART Ensemble Analysis and Prediction System with Application to the Gulf of Mexico
Hoteit, I.; Hoar, T.; Gopalakrishnan, Collins, N.; Anderson, J.; Cornuelle, B.; Köhl, A.; Heimbach, P.. “A MITgcm/DART Ensemble Analysis and Prediction System with Application to the Gulf of Mexico”. Dynamics of Atmospheres and Oceans 63. (2013): S. 1-23.doi:10.1016/j.dynatmoce.2013.03.002
A Pilot Climate Sensitivity Study using the CEN Coupled Adjoint Model (CESAM)
Stammer, D.; Köhl, A.; Vlasenko, A.; Matei, I.; Lunkeit, F.; Schubert, S.. “A Pilot Climate Sensitivity Study using the CEN Coupled Adjoint Model (CESAM)”. Journal of Climate 31 (5). (2018): S. 2031-2056.doi: 10.1175/JCLI-D-17-0183.1
Additional contributions to CMIP5 regional sea level projections resulting from Greenland and Antarctic ice mass loss
Agarwal, N.; Jungclaus, J.H.; Köhl, A.; Mechoso, C.R.; Stammer, D.. “Additional contributions to CMIP5 regional sea level projections resulting from Greenland and Antarctic ice mass loss”. Environmental Research Letters 10 (7), 074008. (2015) doi: 10.1088/1748-9326/10/7/074008
Adjoint Based Estimation of Eddy Induced Tracer Mixing Parameters in the Global Ocean
Liu, C.; Köhl, A.; Stammer, D.. “Adjoint Based Estimation of Eddy Induced Tracer Mixing Parameters in the Global Ocean”. Journal of Physical Oceanography 42 (7). (2012): S. 1186-1206.doi:10.1175/JPO-D-11-0162.1
Adjoint-Based Climate Model Tuning: Application to the Planet Simulator
Lyu, G.; Köhl, A.; Matei, I.; Stammer, D.. “Adjoint-Based Climate Model Tuning: Application to the Planet Simulator”. Journal of Advances in Modeling Earth Systems (2018): S. 1-45. Accepted manuscript onlinedoi: 10.1002/2017MS001194
An adjoint method for the assimilation of statistical characteristics into eddy-resolving ocean models
Köhl, A.. “An adjoint method for the assimilation of statistical characteristics into eddy-resolving ocean models”. Berichte aus dem IfM Kiel 310. (1999) doi:10.3289/IFM_BER_310
Köhl, A.; Willebrand, J.. “An adjoint method for the assimilation of statistical characteristics into eddy-resolving ocean models”. Tellus A 54 (4). (2002): S. 406-425.doi:10.1034/j.1600-0870.2002.01294.x
An assessment of air–sea heat fluxes from ocean and coupled reanalyses
Valdivieso, M.; Haines, K.; Balmaseda, M.; Chang, Y.-S.; Drevillon, M.; Ferry, N.; Fujii, Y.; Köhl, A.; Storto, A.; Toyoda, T.; Wang, X.; Waters, J.; Xue, Y.; Yin, Y.; Barnier, B.; Hernandez, F.; Kumar, A.; Lee, T.; Masina, S.; Peterson, K.A. . “An assessment of air–sea heat fluxes from ocean and coupled reanalyses”. Climate Dynamics (2015): S. 1-26.doi: 10.1007/s00382-015-2843-3
Anomalies of Meridional Overturning: Mechanisms in the North Atlantic
Köhl, A.. “Anomalies of Meridional Overturning: Mechanisms in the North Atlantic”. Journal of Physical Oceanography 35 (8). (2005): S. 1455-1472.doi:10.1175/JPO2767.1
Assessing 4D-VAR for Dynamical Mapping of Coastal High Frequency Radar in San Diego
Hoteit, I.; Cornuelle, B.; Kim, S. Y.; Forget, G.; Köhl, A.; Terrill, E.. “Assessing 4D-VAR for Dynamical Mapping of Coastal High Frequency Radar in San Diego”. Dynamics of Atmospheres and Oceans 48 (1-3). (2009): S. 175-197.doi:10.1016/j.dynatmoce.2008.11.005
Causes for Large-Scale Hydrographic Changes at the Hawaii Ocean Time Series Station
Stammer, D.; Park, S.; Köhl, A.; Lukas, R.; Santiago-Mandujano, F.. “Causes for Large-Scale Hydrographic Changes at the Hawaii Ocean Time Series Station”. Journal of Physical Oceanography 38. (2008): S. 1931-1948.doi: 10.1175/2008JPO3751.1
Causes of changes in the Denmark Strait overflow
Köhl, A.; Käse, R. H.; Stammer, D.; Serra, N.. “Causes of changes in the Denmark Strait overflow”. Journal of Physical Oceanography 37 (6). (2007): S. 1678-1696.doi:10.1175/JPO3080.1
Causes of decadal changes of the freshwater content in the Arctic Ocean
Köhl, A.; Serra, N.. “Causes of decadal changes of the freshwater content in the Arctic Ocean”. Journal of Climate 27 (9). (2014): S. 3461-3475.doi:10.1175/JCLI-D-13-00389.1
Coastal sea level changes, observed and projected during the 20th and 21st century
Carson, M.; Köhl, A.; Stammer, D.; Slangen, A.B.A.; Katsman, C.A.; van de Wal, R.S.W.; Church, J.; White, N.. “Coastal sea level changes, observed and projected during the 20th and 21st century”. Climatic Change 134 (1). (2016): S. 269-281.doi: 10.1007/s10584-015-1520-1
Comparison of GRACE and Model-based Estimates of bottom Pressure Variations against in situ Bottom Pressure Measurements
Stammer, D.; Köhl, A.; Romanova, V.; Siegismund, F.. “Comparison of GRACE and Model-based Estimates of bottom Pressure Variations against in situ Bottom Pressure Measurements”. System Earth via Geodetic-Geophysical Space Techniques. Hg. Flechtner, F.; Gruber, T.; Güntner, A.; Mandea, M.; Rothacher, M.; Schöne, T.; Wickert, J.. Advanced Technologies in Earth Sciences, Heidelberg: Springer, 2010, S. 297-309. doi:10.1007/978-3-642-10228-8_23
Comparison of the Atlantic meridional overturning circulation between 1960 and 2007 in six ocean reanalysis products
Karspeck, A.R.; Stammer, D.; Köhl, A.; Danabasoglu, G.; Balmaseda, M.; Smith, D.M.; Fujii, Y.; Zhang, S.; Giese, B.; Tsujino, H.; Rosati, A.. “Comparison of the Atlantic meridional overturning circulation between 1960 and 2007 in six ocean reanalysis products”. Climate Dynamics (2015): S. 1-26.doi: 10.1007/s00382-015-2787-7
Consistency and fidelity of Indonesian-throughflow total volume transport estimated by 14 ocean data assimilation products. Dynamics of Atmospheres and Oceans
Lee, T.; Awaji, T.; Balmaseda, M.; Ferry, N.; Fuji, Y.; Fukumori, I.; Giese, B.; Heimbach, P.; Köhl, A.; Masina, S.; Remy, E.; Rosati, A.; Schodlok, P.; Stammer, D.; Weaver, A. T.. “Consistency and fidelity of Indonesian-throughflow total volume transport estimated by 14 ocean data assimilation products. Dynamics of Atmospheres and Oceans”. Dynamics of Atmospheres and Oceans 50 (2). (2010): S. 201-223.doi:10.1016/j.dynatmoce.2009.12.004
Consistency of GOCE geoid information with in-situ ocean and atmospheric data, tested by ocean state estimation
Siegismund, F.; Köhl, A.; Stammer, D.. “Consistency of GOCE geoid information with in-situ ocean and atmospheric data, tested by ocean state estimation”. Observation of the System Earth from Space - CHAMP, GRACE, GOCE and future missions: GEOTECHNOLOGIEN Science Report No. 20. Hg. Flechtner, F.; Sneeuw, N.; Schuh, W.-D. . Advanced Technologies in Earth Sciences, Berlin: Springer, 2014, S. 131-137. doi:10.1007/978-3-642-32135-1_17
Consistent near-surface ocean warming since 1900 in two largely independent observing networks
Gouretski, V.; Kennedy, J.; Boyer, T.; Köhl, A.. “Consistent near-surface ocean warming since 1900 in two largely independent observing networks”. Geophysical Research Letters 39 (19). (2012) doi:10.1029/2012GL052975
Decadal Sea Level Changes in the 50-Year GECCO Ocean Synthesis
Köhl, A.; Stammer, D.. “Decadal Sea Level Changes in the 50-Year GECCO Ocean Synthesis”. Journal of Climate 21 (9). (2008): S. 1876-1890.doi:10.1175/2007JCLI2081.1
Deep Meridional Overturning Circulation in the Indian Ocean and Its Relation to Indian Ocean Dipole
Wang, W.; Zhu, X.; Wang, C.; Köhl, A.. “Deep Meridional Overturning Circulation in the Indian Ocean and Its Relation to Indian Ocean Dipole”. Journal of Climate (2014) doi: 10.1175/JCLI-D-13-00472.1
Deep-reaching thermocline mixing in the equatorial pacific cold tongue
Liu, C.; Köhl, A.; Liu, Z.; Wang, F.; Stammer, D.. “Deep-reaching thermocline mixing in the equatorial pacific cold tongue”. Nature Communications 7 (11576). (2016) doi: 10.1038/ncomms11576
Detecting processes contributing to interannual halosteric and thermosteric sea level variability
Köhl, A.. “Detecting processes contributing to interannual halosteric and thermosteric sea level variability”. Journal of Climate 27 (6). (2014): S. 2417–2426.doi:10.1175/JCLI-D-13-00412.1
Dynamical ocean response to projected changes of the global water cycle
Liu, X.; Koehl, A.; Stammer, D.. “Dynamical ocean response to projected changes of the global water cycle”. Journal of Geophysical Research: Oceans 122 (8). (2017): S. 6512–6532.doi: 10.1002/2017JC013061
Efficiency of reduced-order, time-dependent adjoint data assimilation approaches
Hoteit, I.; Köhl, A.. “Efficiency of reduced-order, time-dependent adjoint data assimilation approaches”. Journal of Oceanography 62 (4). (2006): S. 539-550.doi:10.1007/s10872-006-0074-2
Eisschilde und Meeresspiegel
Carson, M.; Köhl, A.. “Eisschilde und Meeresspiegel”. Warnsignal Klima : Das Eis der Erde. Hg. Lozán, J.L.; Grassl, H.; Kasang, D.; Notz, D.; Escher-Vetter, H.. Hamburg: Verlag Wissenschaftliche Auswertungen, 2015, S. 245-250. doi: 10.2312/warnsignal.klima.eis-der-erde.37
Erratum: Evaluation of the GECCO2 ocean synthesis: transports of volume, heat and freshwater in the Atlantic
Köhl, A.. “Erratum: Evaluation of the GECCO2 ocean synthesis: transports of volume, heat and freshwater in the Atlantic”. Quarterly Journal of the Royal Meteorological Society, Part A 142 (694). (2016): S. 536.doi: 10.1002/qj.2747
Estimates of global ocean volume transports during 1960 through 2001
Wang, W.; Köhl, A.; Stammer, D.. “Estimates of global ocean volume transports during 1960 through 2001”. Geophysical Research Letters 37 (15). (2010) doi: 10.1029/2010GL043949
Estimates of Large-scale Ocean Changes at the Hawaii Ocean Time-series Station
Stammer, D.; Park, S.; Köhl, A.; Lukas, R.; Santiago-Mandujano, F.. “Estimates of Large-scale Ocean Changes at the Hawaii Ocean Time-series Station”. Journal of Physical Oceanography 38 (9). (2008): S. 1931-1948.doi:10.1175/2008JPO3751.1
Estimating air-sea fluxes of heat, freshwater and momentum through global ocean data assimilation
Stammer, D.; Ueyoshi, K.; Köhl, A.; Large, W. G.; Josey, S. A.; Wunsch, C.. “Estimating air-sea fluxes of heat, freshwater and momentum through global ocean data assimilation”. Journal of Geophysical Research: Oceans 109 (C5). (2004): S. C05023.doi:10.1029/2003JC002082
Evaluation of the GECCO2 ocean synthesis: transports of volume, heat and freshwater in the Atlantic
Köhl, A.. “Evaluation of the GECCO2 ocean synthesis: transports of volume, heat and freshwater in the Atlantic”. Quarterly Journal of the Royal Meteorological Society, Part A 141 (686). (2015): S. 166-181.doi: 10.1002/qj.2347
Full‑field initialized decadal predictions with the MPI earth system model: an initial shock in the North Atlantic
Kröger, J.; Pohlmann, H.; Sienz, F.; Marotzke, J.; Baehr, J.; Köhl, A.; Modali, K.; Polkova, I.; Stammer, D.; Vamborg, F.S.E.; Müller, W.A.. “Full‑field initialized decadal predictions with the MPI earth system model: an initial shock in the North Atlantic”. Climate Dynamics (2017): S. 1-16.doi: 10.1007/s00382-017-4030-1
Generation and stability of a quasi-permanent vortex in the Lofoten Basin
Köhl, A.. “Generation and stability of a quasi-permanent vortex in the Lofoten Basin”. Journal of Physical Oceanography 37 (11). (2007): S. 2637–2651.doi:10.1175/2007JPO3694.1
Global Ocean Volume Transport Estimation in the 50-year GECCO Assimilation
Wang, W.; Köhl, A.; Stammer, D.. “Global Ocean Volume Transport Estimation in the 50-year GECCO Assimilation”. Geophysical Research Letters 37 (15). (2010): S. L15601.doi:10.1029/2010GL043949
Global Ocean Warming and Sea Level Rise
Roemmich, D.; Willis, J.; Gilson, J.; Stammer, D.; Köhl, A.; Yemenis, T.; Chambers, D. P.; Landerer, F.; Marotzke, J.; Gregory, J.; Suzuki, T.; Chruch, J.; White, N.; Domingues, C.; Cazenave, A.; Letraon, P.-Y.. Global Ocean Warming and Sea Level Rise. WCRP Workshop on Understanding Sea Level Rise and Variability, Paris, France: 2006.
Impact of accurate geoide fields on estimates of the ocean circulation
Stammer, D.; Köhl, A.; Wunsch, C.. “Impact of accurate geoide fields on estimates of the ocean circulation”. Journal of Atmospheric and Oceanic Technology 24 (8). (2007): S. 1464-1478.doi:10.1175/JTECH2044.1
Impact of Assimilating Bottom Pressure Anomalies from GRACE on Ocean Circulation Estimates
Köhl, A.; Siegismund, F.; Stammer, D.. “Impact of Assimilating Bottom Pressure Anomalies from GRACE on Ocean Circulation Estimates”. Journal of Geophysical Research: Oceans 117 (C4). (2012) doi:10.1029/2011JC007623
Impact of Assimilating Surface Salinity from SMOS on Ocean Circulation Estimates
Köhl, A.; Stammer, D.; Sena-Martins, M.. “Impact of Assimilating Surface Salinity from SMOS on Ocean Circulation Estimates”. Journal of Geophysical Research 119. (2014): S. 5449-5465.doi: 10.1002/2014JC010040
Impact of in-consistency between the climate model and its initial conditions on climate prediction
Liu, X.; Köhl, A.; Stammer, D.; Masuda, S.; Ishikawa, Y.; Mochizuki, T.. “Impact of in-consistency between the climate model and its initial conditions on climate prediction”. Climate Dynamics (2016) doi: 10.1007/s00382-016-3194-4
Impact of initialization procedures on the predictive skill of a coupled ocean-atmosphere model
Polkova, I.; Köhl, A.; Stammer, D.. “Impact of initialization procedures on the predictive skill of a coupled ocean-atmosphere model”. Climate Dynamics 42 (11-12). (2014): S. 3151-3169.doi:10.1007/s00382-013-1969-4
Impacts of regional mixing on the temperature structure of the equatorial Pacific Ocean. Part 1: Vertically uniform vertical diffusion
Furue, R.; Jia, Y.; McCreary, J.P.; Schneider, N.; Richards, K.J.; Müller, P.; Cornuelle, B.D.; Martinez Avellaneda, N.; Stammer, D.; Liu, C.; Köhl, A. . “Impacts of regional mixing on the temperature structure of the equatorial Pacific Ocean. Part 1: Vertically uniform vertical diffusion”. Ocean Modelling 91. (2015): S. 91-111.doi: 10.1016/j.ocemod.2014.10.002
Influence of assimilating transports and in situ data from the Rapid-MOCHA array into the GECCO2 ocean synthesis
Köhl, A.. “Influence of assimilating transports and in situ data from the Rapid-MOCHA array into the GECCO2 ocean synthesis”. Dynamics of Atmospheres and Oceans 72. (2015): S. 38-51.doi: 10.1016/j.dynatmoce.2015.09.001
Initializing Decadal Climate Predictions with the GECCO Oceanic Synthesis: Effects on the North Atlantic
Pohlmann, H.; Jungclaus, J.; Köhl, A.; Marotzke, J.; Stammer, D.. “Initializing Decadal Climate Predictions with the GECCO Oceanic Synthesis: Effects on the North Atlantic”. Journal of Climate 22 (14). (2009): S. 3926-3938.doi:10.1175/2009JCLI2535.1
Interannual to Decadal Changes in the ECCO Global Synthesis
Köhl, A.; Cornuelle, B.; Stammer, D.. “Interannual to Decadal Changes in the ECCO Global Synthesis”. Journal of Physical Oceanography 37 (2). (2007): S. 313-337.doi:10.1175/JPO3014.1
Interannual-decadal variability of wintertime mixed layer depths in the North Pacific detected by an ensemble of ocean syntheses
Toyoda, T.; Fujii, Y.; Kuragano, T.; Kosugi, N.; Sasano, D.; Kamachi, M.; Ishikawa, Y.; Masuda, S.; Sato, K.; Awaji, T.; Hernandez, F.; Ferry, N.; Guinehut, S.; Martin, M.; Peterson, K.A.; Good, S.A.; Valdivieso, M.; Haines, K.; Storto, A.; Masina, S.; Köhl, A.; Yin, Y.; Shi, L.; Alves, O.; Smith, G.; Chang, Y.-S.; Vernieres, G.; Wang, X.; Forget, G.; Heimbach, P.; Wang, O.; Fukumori, I.; Lee, T.; Zuo, H.; Balmaseda, M. . “Interannual-decadal variability of wintertime mixed layer depths in the North Pacific detected by an ensemble of ocean syntheses”. Climate Dynamics (2015): S. 1-17.doi: 10.1007/s00382-015-2762-3
Intercomparison and validation of the mixed layer depth fields of global ocean syntheses
Toyoda, T.; Fujii, Y.; Kuragano, T.; Kamachi, M.; Ishikawa, Y.; Masuda, S.; Sato, K.; Awaji, T.; Hernandez, F.; Ferry, N.; Guinehut, S.; Martin, M.J.; Peterson, K.A.; Good, S.A.; Valdivieso, M.; Haines, K.; Storto, A.; Masina, S.; Köhl, A.; Balmaseda, M.; Yin, Y.; Shi, L.; Alves, O.; Smith, G.; Chang, Y.-S.; Vernieres, G.; Wang, X.; Forget, G.; Heimbach, P.; Wang, O.; Fukumori, I.; Lee, T. . “Intercomparison and validation of the mixed layer depth fields of global ocean syntheses”. Climate Dynamics (2015): S. 1-21.doi: 10.1007/s00382-015-2637-7
Interpreting layer thickness advection in terms of eddy–topography interaction
Liu,C.; Köhl, A.; Stammer, D.. “Interpreting layer thickness advection in terms of eddy–topography interaction”. Ocean Modelling 81. (2014): S. 65-77.doi: 10.1016/j.ocemod.2014.07.001
Mean Circulation and Variability of the Tropical Atlantic during 1952-2001 in the GECCO Assimilation Fields
Rabe, B.; Schott, A.; Köhl, A.. “Mean Circulation and Variability of the Tropical Atlantic during 1952-2001 in the GECCO Assimilation Fields”. Journal of Physical Oceanography 38 (1). (2008): S. 177-192.doi:10.1175/2007JPO3541.1
Mechanisms for the variability of dense water pathways in the Nordic Seas
Käse, R.; Serra, N.; Köhl, A.; Stammer, D.. “Mechanisms for the variability of dense water pathways in the Nordic Seas”. Journal of Geophysical Research: Oceans 114. (2009): S. C01023.doi:10.1029/2008JC004916
MiKlip - a National Research Project on Decadal Climate Prediction
Marotzke, J.; Müller, W.A.; Vamborg, F.S.E.; Becker, P.; Cubasch, U.; Feldmann, H.; Kaspar, F.; Kottmeier, C.; Marini, C.; Polkova, I.; Prömmel, K.; Rust, H.W.; Stammer, D.; Ulbrich, U.; Kadow, C.; Köhl, A.; Kröger, J.; Kruschke, T.; Pinto, J.G.; Pohlmann, H.; Reyers, M.; Schröder, M.; Sienz, F.; Timmreck, C.; Ziese, M.. “MiKlip - a National Research Project on Decadal Climate Prediction ”. Bulletin of the American Meteorological Society (2016) (in press)doi: 10.1175/BAMS-D-15-00184.1
Multimodel Simulations of Arctic Ocean Sea Surface Height Variability in the Period 1970-2009
Koldunov, N. V.; Serra, N.; Köhl, A.; Stammer, D.; Henry, O.; Cazenave, A.; Prandi, P.; Knudsen, P.; Andersen, O. B.; Gao, Y.; Johannessen, J.. “Multimodel Simulations of Arctic Ocean Sea Surface Height Variability in the Period 1970-2009”. Journal of Geophysical Research: Oceans 119 (12). (2014): S. 8936–8954.doi:10.1002/2014JC010170
NASA supercomputer improves prospects for climate research
Menemenlis, D.; Hill, C.; Adcroft, A.; Campin, J.; Cheng, B.; Ciotti, B.; Fukumori, I.; Heimbach, P.; Henze, C.; Köhl, A.; Lee, T.; Stammer, D.; Taft, J.; Zhang, J.. “NASA supercomputer improves prospects for climate research”. EOS 86 (9). (2005): S. 89, 95-96.hdl.handle.net/2014/40086
Observational Requirements for Global-Scale Ocean Climate Analysis: Lessons from Ocean State Estimation
Heimbach, P.; Forget, G.; Ponte, R.M.; Wunsch, C.; Balmaseda, M.; Awaji, T.; Baehr, J.; Behringer, D.; Carton, J.; Ferry, N.; Fischer, A.; Fukumori, I.; Giese, B.; Haines, K.; Harrison, E.; Hernandez, F.; Kamachi, M.; Keppenne, C.; Köhl, A.; Lee, T.; Menemenlis, D.; Oke, P.; Remy, E.; Rienecker, M.; Rosati, A.; Smith, D.; Speer, K.; Stammer, D.; Weaver, A.. “Observational Requirements for Global-Scale Ocean Climate Analysis: Lessons from Ocean State Estimation”. Proceedings of the OceanObs'09: Sustained Ocean Observations and Information for Society Conference . Hg. Hall, J.; Harrison D.E.; Stammer, D.. Venedig: ESA Publication, 2010 pdf doi:10.5270/OceanObs09.cwp.42
Ocean bottom pressure variations estimated from gravity, nonsteric sea surface height and hydrodynamic model simulations
Siegismund, F.; Romanova, V.; Köhl, A.; Stammer, D.. “Ocean bottom pressure variations estimated from gravity, nonsteric sea surface height and hydrodynamic model simulations”. Journal of Geophysical Research: Oceans 116 (C7). (2011): S. C07021.doi:10.1029/2010JC006727
Ocean Data Assimilation in Support of Climate Applications: Status and Perspectives
Stammer, D.; Balmaseda, M.; Heimbach, P.; Köhl, A.; Weaver, A.. “Ocean Data Assimilation in Support of Climate Applications: Status and Perspectives”. Annual Review of Marine Science 8. (2016): S. 491-518.doi: 10.1146/annurev-marine-122414-034113
Ocean heat content variability and change in an ensemble of ocean reanalyses
Palmer, M.D.; Roberts, C.D.; Balmaseda, M.; Chang, Y.-S.; Chepurin, G.; Ferry, N.; Fujii, Y.; Good, S.A.; Guinehut, S.; Haines, K.; Hernandez, F.; Köhl, A.; Lee, T.; Martin, M.J.; Masina, S.; Masuda, S.; Peterson, K.A.; Storto, A.; Toyoda, T.; Valdivieso, M.; Vernieres, G.; Wang, O.; Xue, Y.. “Ocean heat content variability and change in an ensemble of ocean reanalyses”. Climate Dynamics (2015): S. 1-22.doi: 10.1007/s00382-015-2801-0
Ocean Information Provided Through Ensemble Ocean Syntheses
Stammer, D.; Köhl, A.; Awaji, T.; Balmaseda, M.; Behringer, D.; Carton, J.; Ferry, N.; Fischer, A.; Fukumori, I.; Giese, B.; Haines, K.; Harrison, E.; Heimbach, P.; Kamachi, M.; Keppenne, C.; Lee, T.; Masina, S.; Menemenlis, D.; Ponte, R.; Remy, E.; Rienecker, M.; Rosati, A.; Schröter, J.; Smith, D.; Weaver, A.; Wunsch, C.; Xue, Y. . “Ocean Information Provided Through Ensemble Ocean Syntheses”. Proceedings of the OceanObs'09: Sustained Ocean Observations and Information for Society Conference. Hg. Hall, J.; Harrison, D.E.; Stammer, D.. Venedig: ESA Publication, 2010 pdf doi:10.5270/OceanObs09.cwp.85
Ocean mixed layer depth: A subsurface proxy of ocean-atmosphere variability
Lorbacher, K.; Dommenget, D.; Niiler, P. P.; Köhl, A.. “Ocean mixed layer depth: A subsurface proxy of ocean-atmosphere variability”. Journal of Geophysical Research: Oceans 111 (C7). (2006): S. C07010.doi:10.1029/2003JC002157
Ocean State Estimation for Climate Research
Lee, T.; Stammer, D.; Awaji, T.; Balmaseda, M.; Behringer, D.; Carton, J.; Ferry, N.; Fischer, A.; Fukumori, I.; Giese, B.; Haines, K.; Harrison, E.; Heimbach, P.; Kamachi, M.; Keppenne, C.; Köhl, A.; Masina, S.; Menemenlisand, D.; Ponte, R.; Remy, E.; Rienecker, M.; Rosati, A.; Schroeter, J.; Smith, D.; Weaver, A.; Wunsch, C.; Xue, Y.. “Ocean State Estimation for Climate Research”. Proceedings of the OceanObs'09: Sustained Ocean Observations and Information for Society Conference. Hg. Hall, J.; Harrison, D.E.; Stammer, D.. Venedig: ESA Publication, 2010 pdf doi:10.5270/OceanObs09.cwp.55
Ocean temperature and salinity contributions to global and regional sea-level change
Church, J. A.; Roemmich, D.; Domingues, C.; Willis, J.; White, N.; Gilson, J.; Stammer, D.; Köhl, A.; Yemenis, T.; Chambers, D. P.; Landerer, F.; Marotzke, J.; Gregory, J.; Suzuki, T.; Cazenave, A.; LeTraon, P.-Y.. “Ocean temperature and salinity contributions to global and regional sea-level change”. Understanding Sea-level Rise and Variability. Chichester: Wiley-Blackwell, 2010, S. 143-176. doi:10.1002/9781444323276.ch6
On the Early Response of the Climate System to a Meltwater Input from Greenland
Agarwal, N.; Köhl, A.; Mechoso, R.; Stammer, D.. “On the Early Response of the Climate System to a Meltwater Input from Greenland”. Journal of Climate 27. (2014): S. 8276-8296.doi: 10.1175/JCLI-D-13-00762.1
On the low-frequency phase relation between the Denmark Strait and the Faroe-Shetland Channel dense overflow
Serra, N.; Käse, R. H.; Köhl, A.; Stammer, D.; Quadfasel, D.. “On the low-frequency phase relation between the Denmark Strait and the Faroe-Shetland Channel dense overflow”. Tellus A 62 (4). (2010): S. 530-550.doi:10.1111/j.1600-0870.2010.00445.x
Optimal observations for variational data assimilation
Köhl, A.; Stammer, D.. “Optimal observations for variational data assimilation”. Journal of Physical Oceanography 34 (3). (2004): S. 529-542.doi:10.1175/2513.1
Potential Predictability of the North Atlantic Heat Transport Based on an Oceanic State Estimate
Tiedje, B.; Köhl, A.; Baehr, J.. “Potential Predictability of the North Atlantic Heat Transport Based on an Oceanic State Estimate”. Journal of Climate 25 (24). (2012): S. 8475-8486.doi:10.1175/JCLI-D-11-00606.1
Predictive Skill for Regional Interannual Steric Sea Level and Mechanisms for Predictability
Polkova, I.; Köhl, A.; Stammer, D.. “Predictive Skill for Regional Interannual Steric Sea Level and Mechanisms for Predictability”. Journal of Climate 28. (2015): S. 7407–7419.doi: 10.1175/JCLI-D-14-00811.1
Projecting twenty-first century regional sea-level changes
Slangen, A. B. A.; Carson, M.; Katsman, C. A.; van de Wal, R. S. W.; Köhl, A.; Stammer, D.. “Projecting twenty-first century regional sea-level changes”. Climatic Change 124. (2014): S. 317-332.doi: 10.1007/s10584-014-1080-9
Properties of Adjoint Sea Ice Sensitivities to Atmospheric Forcing and Implications for the Causes of the Long Term Trend of Arctic Sea Ice
Koldunov, N. V.; Köhl, A.; Stammer, D.. “Properties of Adjoint Sea Ice Sensitivities to Atmospheric Forcing and Implications for the Causes of the Long Term Trend of Arctic Sea Ice”. Climate Dynamics 41 (2). (2013): S. 227-241.doi:10.1007/s00382-013-1816-7
Regional Sea Level Variability and Trends, 1960–2007: A Comparison of Sea Level Reconstructions and Ocean Syntheses
Carson, M.; Köhl, A.; Stammer, D.; Meyssignac, B.; Church, J.; Schröter, J.; Wenzel, M.; Hamlington, B.. “Regional Sea Level Variability and Trends, 1960–2007: A Comparison of Sea Level Reconstructions and Ocean Syntheses”. Journal of Geophysical Research: Oceans 122 (1). (2017): S. 9068–9091.doi: 10.1002/2017JC012992
Regionaler und globaler Anstieg des Meeresspiegels: Ursachen
Köhl, A.; Stammer, D.. “Regionaler und globaler Anstieg des Meeresspiegels: Ursachen”. Warnsignal Klima: Die Meere- Änderungen und Risiken. Hg. Lozán, J. L.; Graßl, H.; Reise, K.. Hamburg: Wiss. Auswertungen, 2011, S. 108-112.
Response of a Coupled Ocean-Atmosphere Model to Greenland Ice Melting
Stammer, D.; Agarwal, N.; Herrmann, P.; Köhl, A.; Mechoso, C. R.. “Response of a Coupled Ocean-Atmosphere Model to Greenland Ice Melting”. Surveys in Geophysics 32 (4-5). (2011): S. 621-642.doi:10.1007/s10712-011-9142-2
Sea ice assimilation into a coupled ocean-sea ice model using its adjoint
Koldunov, N.V.; Köhl, A.; Serra, N.; Stammer, D.. “Sea ice assimilation into a coupled ocean-sea ice model using its adjoint”. The Cryosphere 11 (5). (2017): S. 2265-2281.doi: 10.5194/tc-11-2265-2017
Sea surface freshwater flux estimates from GECCO, HOAPS and NCEP
Romanova, V.; Köhl, A.; Stammer, D.; Klepp, C.; Andersson, A.; Bakan, S.. “Sea surface freshwater flux estimates from GECCO, HOAPS and NCEP”. Tellus A 62 (4). (2010): S. 435-452.doi:10.1111/j.1600-0870.2010.00447.x
Seasonal Cycle of Near Surface Freshwater Budget in the Western Tropical Atlantic
Romanova, V.; Köhl, A.; Stammer, D.. “Seasonal Cycle of Near Surface Freshwater Budget in the Western Tropical Atlantic”. Journal of Geophysical Research: Oceans 116 (C7). (2011): S. C07009.doi:10.1029/2010JC006650
Seasonal overturning circulation in the Red Sea: 1. Model validation and summer circulation
Yao, F.; Hoteit, I.; Pratt, L.J.; Bower, A.S.; Zhai, P.; Köhl, A.; Gopalakrishnan, G.. “Seasonal overturning circulation in the Red Sea: 1. Model validation and summer circulation”. Journal of Geophysical Research 119 (4). (2014): S. 2238-2262.doi: 10.1002/2013JC009004
Seasonal overturning circulation in the Red Sea: 2. Winter circulation
Yao, F.; Hoteit, I.; Pratt, L.J.; Bower, A.S.; Köhl, A.; Gopalakrishnan, G.; Rivas, D.. “Seasonal overturning circulation in the Red Sea: 2. Winter circulation”. Journal of Geophysical Research 119 (4). (2014): S. 2263-2289.doi: 10.1002/2013JC009331
Steric sea level variability (1993–2010) in an ensemble of ocean reanalyses and objective analyses
Storto, A.; Masina, S.; Balmaseda, M.; Guinehut, S.; Xue, Y.; Szekely, T.; Fukumori, I.; Forget, G.; Chang, Y.-S.; Good, S.A.; Köhl, A.; Vernieres, G.; Ferry, N.; Peterson, K.A.; Behringer, D.; Ishii, M.; Masuda, S.; Fujii, Y.; Toyoda, T.; Yin, Y.; Valdivieso, M.; Barnier, B.; Boyer, t.; Lee, T.; Gourrion, J.; Wang, O.; Heimbach, P.; Rosati, A.; Kovach, R.; Hernandez, F.; Martin, M.J.; Kamachi, M.; Kuragano, T.; Mogensen, K.; Alves, O.; Haines, K.; Wang, X. . “Steric sea level variability (1993–2010) in an ensemble of ocean reanalyses and objective analyses”. Climate Dynamics (2015): S. 1-21.doi: 10.1007/s00382-015-2554-9
Testing the Quality of Sea-Level Data Using the GECCO Adjoint Assimilation Approach
Scharffenberg, M.; Köhl, A.; Stammer, D.. “Testing the Quality of Sea-Level Data Using the GECCO Adjoint Assimilation Approach”. Surveys in Geophysics 38 (1). (2017): S. 349–383.doi: 10.1007/s10712-016-9401-3
Testing variational calibration and initialisation of an Earth System Model
Blessing, S.; Kaminski, T.; Lunkeit, F.; Matei, I.; Giering, R.; Köhl, A.; Scholze, M.; Kirk, E.; Herrmann, P.; Fraedrich, K.; Stammer, D.. “Testing variational calibration and initialisation of an Earth System Model”. Tellus A 66. (2014): S. 22606.doi: 10.3402/tellusa.v66.22606
The Deep Meridional Overturning Circulation in the Indian Ocean Inferred from the GECCO Synthesis
Wang, W.; Köhl, A.; Stammer, D.. “The Deep Meridional Overturning Circulation in the Indian Ocean Inferred from the GECCO Synthesis”. Dynamics of Atmospheres and Oceans 58. (2012): S. 44-61.doi:10.1016/j.dynatmoce.2012.08.001
The efficiency of geophysical adjoint codes generated by automatic differentiation tools
Vlasenko, A.V.; Köhl, A.; Stammer, D.. “The efficiency of geophysical adjoint codes generated by automatic differentiation tools”. Computer Physics Communications 199. (2016): S. 22-28.doi: 10.1016/j.cpc.2015.10.008
The Impact of Regional Multidecadal and Century-Scale Internal Climate Variability on Sea Level Trends in CMIP5 Models
Carson, M.; Köhl, A.; Stammer, D.. “The Impact of Regional Multidecadal and Century-Scale Internal Climate Variability on Sea Level Trends in CMIP5 Models”. Journal of Climate 28 (2). (2015): S. 853-861.doi: 10.1175/JCLI-D-14-00359.1
The Ocean Reanalyses Intercomparison Project (ORA-IP)
Balmaseda, M.; Hernandez, F.; Storto, A.; Palmer, M.D.; Alves, O.; Shi, L.; Smith, G.C.; Toyoda, T.; Valdivieso, M.; Barnier, B.; Behringer, D.; Boyer, T.; Chang, Y.-S.; Chepurin, G.A.; Ferry, N.; Forget, G.; Fujii, Y.; Good, S.A.; Guinehut, S.; Haines, K.; Ishikawa, Y.; Keeley, S.; Köhl, A.; Lee, T.; Martin, M.J.; Masina, S.; Masuda, S.; Meyssignac, B.; Mogensen, K.; Parent, L.; Peterson, K.A.; Tang, Y.M.; Yin, Y.; Vernieres, G.; Wang, X.; Waters, J.; Wedd, R.; Wang, O.; Xue, Y.; Chevallier, M.; Lernieux, J.-F.; Dupont, F.; Kuragano, T.; Kamachi, M.; Awaji, T.; Caltabiano, A.; Wilmer-Becker, K.; Gaillard, F. . “The Ocean Reanalyses Intercomparison Project (ORA-IP)”. Journal of Operational Oceanography 8 (Suppl. 1). (2015) Special Issue: GODAE OceanView Part 1 doi: 10.1080/1755876X.2015.1022329
The overflow flux west of Iceland: variability, origins and forcing
Dickson, B.; Dye, S.; Jònsson, S.; Köhl, A.; Macrander, A.; Marnela, M.; Meincke, J.; Olsen, S.; Rudels, B.; Valdimarsson, H.; Voet, G.. “The overflow flux west of Iceland: variability, origins and forcing”. Arctic-Subarctic Ocean Fluxes: Defining the role of the Northern Seas in Climate. Springer, 2008, S. 443-474. doi:10.1007/978-1-4020-6774-7_20
Treating Strong Adjoint Sensitivities in Tropical Eddy-Permitting Variational Data Assimilation
Hoteit, I.; Cornuelle, B.; Köhl, A.; Stammer, D.. “Treating Strong Adjoint Sensitivities in Tropical Eddy-Permitting Variational Data Assimilation”. Quarterly Journal of the Royal Meteorological Society 131 (613). (2005): S. 3659-3682.doi:10.1256/qj.05.97
Variability of the Meridional Overturning in the North Atlantic from the 50 years GECCO State Estimation
Köhl, A.; Stammer, D.. “Variability of the Meridional Overturning in the North Atlantic from the 50 years GECCO State Estimation”. Journal of Physical Oceanography 38 (9). (2008): S. 1913-1930.doi:10.1175/2008JPO3775.1
Variable Source Regions of Denmark Strait and Faroe Bank Channel Overflow Waters
Köhl, A.. “Variable Source Regions of Denmark Strait and Faroe Bank Channel Overflow Waters”. Tellus A 62 (4). (2010): S. 551-568.doi:10.1111/j.1600-0870.2010.00454.x
Variational assimilation of SSH variance from TOPEX/POSEIDON and ERS1 into an eddy-permitting model of the North Atlantic
Köhl, A.; Willebrand, J.. “Variational assimilation of SSH variance from TOPEX/POSEIDON and ERS1 into an eddy-permitting model of the North Atlantic”. Clivar Exchanges 5. (2000): S. 14.
Köhl, A.; Willebrand, J.. “Variational assimilation of SSH variance from TOPEX/POSEIDON and ERS1 into an eddy-permitting model of the North Atlantic”. Journal of Geophysical Research: Oceans 108 (C3). (2003): S. 3092.doi:10.1029/2001JC000982