Dr. Tronje Kemena
Wissenschaftlicher Programmierer und Data Scientist in der Forschungseinheit Biogeochemische Modellierung
Büro:
Raum 5.506
Turm 5, Etage 5
Tel.: +49 431 600–4039
E-Mail: tkemena(at)geomar.de
Anschrift:
GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel
Wischhofstraße 1–3
24148 Kiel
Forschungsinteressen
Unterstützung und Betrieb des FOCI-Modells für die BM-Gruppe. Schwerpunkt auf Datenanalyse, maschinellem Lernen und der Entwicklung von Werkzeugen zur Datenverarbeitung.
Publikationen
Number of items: 18.
Articles in a Scientific Journal - peer-reviewed
Guo, H., Koeve, W.
, Oschlies, A.
, He, Y. C., Kemena, T. P.
, Gerke, L. and Kriest, I.
(2025)
Dual-tracer constraints on the Inverse-Gaussian Transit-time distribution improve the estimation of watermass ages and their temporal trends in the tropical thermocline.
Ocean Science, 21
(3).
pp. 1167-1182.
DOI 10.5194/os-21-1167-2025.
, Oschlies, A.
, He, Y. C., Kemena, T. P.
, Gerke, L. and Kriest, I.
(2025)
Dual-tracer constraints on the Inverse-Gaussian Transit-time distribution improve the estimation of watermass ages and their temporal trends in the tropical thermocline.
Wey, H. W.
, Moustakis, Y., Nützel, T., Oschlies, A.
, Schwinger, J., Hajima, T., Fisher, R., Ziehn, T., Liddicoat, S. K., Kemena, T. P.
and Keller, D.
(2025)
CMIP6 Models agree on similar carbon cycle feedbacks between enhancing terrestrial and marine carbon sinks.
Environmental Research Letters, 20
.
Art.Nr. 054029.
DOI 10.1088/1748-9326/adc617.
, Moustakis, Y., Nützel, T., Oschlies, A.
, Schwinger, J., Hajima, T., Fisher, R., Ziehn, T., Liddicoat, S. K., Kemena, T. P.
and Keller, D.
(2025)
CMIP6 Models agree on similar carbon cycle feedbacks between enhancing terrestrial and marine carbon sinks.
Kemena, T. P.
, Oschlies, A.
, Wallmann, K. J. G.
, Landolfi, A.
and Dale, A. W.
(2019)
Ocean phosphorus inventory: large uncertainties in future projections on millennial timescales and their consequences for ocean deoxygenation.
Earth System Dynamics, 10
(3).
pp. 539-553.
DOI 10.5194/esd-10-539-2019.
, Oschlies, A.
, Wallmann, K. J. G.
, Landolfi, A.
and Dale, A. W.
(2019)
Ocean phosphorus inventory: large uncertainties in future projections on millennial timescales and their consequences for ocean deoxygenation.
Wallmann, K.
, Flögel, S., Scholz, F., Dale, A. W.
, Kemena, T. P.
, Steinig, S.
and Kuhnt, W.
(2019)
Periodic changes in the Cretaceous ocean and climate caused by marine redox see-saw.
Nature Geoscience, 12
(6).
pp. 456-461.
DOI 10.1038/s41561-019-0359-x.
, Flögel, S., Scholz, F., Dale, A. W.
, Kemena, T. P.
, Steinig, S.
and Kuhnt, W.
(2019)
Periodic changes in the Cretaceous ocean and climate caused by marine redox see-saw.
Nature Geoscience, 12
(6).
pp. 456-461.
DOI 10.1038/s41561-019-0359-x.
Kemena, T. P.
, Matthes, K.
, Martin, T.
, Wahl, S.
and Oschlies, A.
(2018)
Atmospheric feedbacks in North Africa from an irrigated, afforested Sahara.
Climate Dynamics, 50
(11-12).
pp. 4561-4581.
DOI 10.1007/s00382-017-3890-8.
, Matthes, K.
, Martin, T.
, Wahl, S.
and Oschlies, A.
(2018)
Atmospheric feedbacks in North Africa from an irrigated, afforested Sahara.
Climate Dynamics, 50
(11-12).
pp. 4561-4581.
DOI 10.1007/s00382-017-3890-8.
Niemeyer, D.
, Kemena, T. P.
, Meissner, K. J. and Oschlies, A.
(2017)
A model study of warming-induced phosphorus-oxygen feedbacks in open-ocean oxygen minimum zones on millennial timescales.
Earth System Dynamics, 8
(2).
pp. 357-367.
DOI 10.5194/esd-8-357-2017.
, Kemena, T. P.
, Meissner, K. J. and Oschlies, A.
(2017)
A model study of warming-induced phosphorus-oxygen feedbacks in open-ocean oxygen minimum zones on millennial timescales.
Articles in a Scientific Journal - without review
Garcia-Suarez, L., Fennel, K., Mehendale, N., Kemena, T. P.
and Keller, D. P.
(Submitted)
Temperature-based Diagnosis of the Gulf Stream Path Overestimates a Northward Shift in a Warming Ocean.
ESS Open Archive
.
DOI 10.22541/essoar.173758192.24328151/v2.
and Keller, D. P.
(Submitted)
Temperature-based Diagnosis of the Gulf Stream Path Overestimates a Northward Shift in a Warming Ocean.
Hill-Cruz, M.
, Xue, T.
, Hauschildt, J., Gutiérrez, M. and Kemena, T. P.
(Submitted)
Supervised and unsupervised machine learning methods for modelling current and future habitat of Peruvian anchovy.
bioRxiv - the preprint server for biology
.
DOI 10.1101/2025.05.08.652876.
, Xue, T.
, Hauschildt, J., Gutiérrez, M. and Kemena, T. P.
(Submitted)
Supervised and unsupervised machine learning methods for modelling current and future habitat of Peruvian anchovy.
Conference papers
Schaffarczyk, A. P. and Kemena, T.
(2008)
A Simplified Model for Fatigue Load Calculations of Small Wind- Turbines with Vertical Axis of Rotation.
[Paper]
In: DEWEK 2008. , 26.-27.11.2008, Bremen, Germany .
(2008)
A Simplified Model for Fatigue Load Calculations of Small Wind- Turbines with Vertical Axis of Rotation.
[Paper]
In: DEWEK 2008. , 26.-27.11.2008, Bremen, Germany .
Presentations
, Xue, T.
, Hauschildt, J.
, Gutierrez, M. and Kemena, T. P.
(2025)
Modelling the distribution of Peruvian anchovies under a changing climate.
[Talk]
In: Association for the Sciences of Limnology and Oceanography (ASLO) 2025 Aquatic Sciences Meeting. , 26.-31.03.2025, Charlotte, North Carolina, USA .
, Keller, D. P.
and Oschlies, A.
(2024)
Regional differences in uptake during simulation of ocean alkalinity enhancement in an Earth system model.
[Talk]
In: Ocean Science Meeting 2024. , 18.-23.02.2024, New Orleans, USA .
, Kemena, T. P.
, Keller, D. P.
and Oschlies, A.
(2023)
Simulating Ocean Alkalinity Enhancement along the European Coast in an Earth System Model.
[Talk]
In: EGU General Assembly 2023. , 24.-28.4.2023, Vienna, Austria .
Conference posters
Kemena, T.
, Matthes, K.
, Martin, T.
, Wahl, S.
and Oschlies, A.
(2015)
Climatic impacts of irrigated afforestation of the Sahara in a complex Earth System Model.
[Poster]
In: Climate Engineering Research Symposium 2015. , 07.-10.07.2015, Berlin, Germany .
, Matthes, K.
, Martin, T.
, Wahl, S.
and Oschlies, A.
(2015)
Climatic impacts of irrigated afforestation of the Sahara in a complex Earth System Model.
[Poster]
In: Climate Engineering Research Symposium 2015. , 07.-10.07.2015, Berlin, Germany .
Theses - not published by a publisher
Kemena, T. P.
(2017)
Assessment of Feedbacks in the Earth System under Anthropogenic Forcing: Two Case Studies.
(PhD/ Doctoral thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 114, XX pp.
(2017)
Assessment of Feedbacks in the Earth System under Anthropogenic Forcing: Two Case Studies.
Kemena, T.
(2014)
Impact of the carbon cycle on the development of a Snowball Earth.
(Master thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 63 pp.
(2014)
Impact of the carbon cycle on the development of a Snowball Earth.
(Master thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 63 pp.
Reports - other reports
Schartau, M.
, Pahlow, M., Kemena, T. P.
, Lampe, V.
, Taucher, J.
and Seifert, M.
(2024)
New/refined parameterizations for modelling ocean alkalinization effects on biogeochemistry and plankton dynamics.
.
OceanNets Deliverable, D5.8
.
OceanNETs, Kiel, Germany, 34 pp.
DOI 10.3289/oceannets_d5.8.
, Pahlow, M., Kemena, T. P.
, Lampe, V.
, Taucher, J.
and Seifert, M.
(2024)
New/refined parameterizations for modelling ocean alkalinization effects on biogeochemistry and plankton dynamics.
Keller, D. P.
, Mehendale, N. and Kemena, T. P.
(2023)
Analysis (report) of high- resolution modelling of efficacy, and regional impacts of selected ocean NETs close to the
deployment sites.
.
OceanNets Deliverable, D4.3_v1
.
OceanNETs, Kiel, Germany, 29 pp.
DOI 10.3289/oceannets_d4.3_v1.
, Mehendale, N. and Kemena, T. P.
(2023)
Analysis (report) of high- resolution modelling of efficacy, and regional impacts of selected ocean NETs close to the
deployment sites.
Dataset
, Pahlow, M.
, Kemena, T. P.
, Lampe, V.
, Taucher, J.
and Seifert, M.
(2025)
OceanNETs Deliverable D5.8: New/refined parameterizations for modelling ocean alkalinization effects on biogeochemistry and plankton dynamics.