Dewi Le Bars

I am a researcher at the Royal Netherlands Meteorological Institute (KNMI) in the R&D Weather and Climate modelling group.

I am interested in understanding dominant processes driving sea level changes and in improving sea level rise projections.

The processes I am particularly interested in range from thermal expansion, meridional overturning circulation, ice sheet mass loss and multidecadal climate modes of variability. To investigate the physics of these phenomena I use observations and numerical models of increasing complexity, from rectangular domain barotropic ocean models to high resolution earth system models.

On this site you will find information about my research, my curriculum and the list of my papers. For updates on my work and on sea level in general you can follow me on Mastodon @DewiLeBars@fediscience.org

Contact:

Dr. Dewi Le Bars

Email: bars -at- knmi.nl

KNMI. Weather and Climate modelling group.

PO-BOX 201, 3730 AE, de Bilt, 

The Netherlands.

Peer-reviewed articles:

Bult, Sterre V., Dewi Le Bars, Ivan D. Haigh, and Theo Gerkema. “The Effect of the 18.6-Year Lunar Nodal Cycle on Steric Sea Level Changes.” Geophysical Research Letters 51, no. 8 (2024): e2023GL106563. https://doi.org/10.1029/2023GL106563.

Jesse, Franka, Dewi Le Bars, and Sybren Drijfhout. “Processes Explaining Increased Ocean Dynamic Sea Level in the North Sea in CMIP6.” Environmental Research Letters 19, no. 4 (April 2024): 044060. https://doi.org/10.1088/1748-9326/ad33d4.

Mortensen, Eric, Timothy Tiggeloven, Toon Haer, Bas van Bemmel, Dewi Le Bars, Sanne Muis, Dirk Eilander, et al. “The Potential of Global Coastal Flood Risk Reduction Using Various DRR Measures.” Natural Hazards and Earth System Sciences 24, no. 4 (April 24, 2024): 1381–1400. https://doi.org/10.5194/nhess-24-1381-2024

Goulart, Henrique M. D., Irene Benito Lazaro, Linda van Garderen, Karin van der Wiel, Dewi Le Bars, Elco Koks, and Bart van den Hurk. “Compound Flood Impacts from Hurricane Sandy on New York City in Climate-Driven Storylines.” Natural Hazards and Earth System Sciences 24, no. 1 (January 10, 2024): 29–45. https://doi.org/10.5194/nhess-24-29-2024.

Muis, Sanne, Jeroen C. J. H. Aerts, José A. Á. Antolínez, Job C. Dullaart, Trang Minh Duong, Li Erikson, Rein J. Haarsma, et al. “Global Projections of Storm Surges Using High-Resolution CMIP6 Climate Models.” Earth’s Future 11, no. 9 (2023): e2023EF003479. https://doi.org/10.1029/2023EF003479

Keizer, Iris, Dewi Le Bars, Cees de Valk, André Jüling, Roderik van de Wal, and Sybren Drijfhout. “The Acceleration of Sea-Level Rise along the Coast of the Netherlands Started in the 1960s.” Ocean Science 19, no. 4 (July 6, 2023): 991–1007. https://doi.org/10.5194/os-19-991-2023

Linden, Eveline C. van der, Dewi Le Bars, Erwin Lambert, and Sybren Drijfhout. “Antarctic Contribution to Future Sea Level from Ice Shelf Basal Melt as Constrained by Ice Discharge Observations.” The Cryosphere 17, no. 1 (January 11, 2023): 79–103. https://doi.org/10.5194/tc-17-79-2023

Koks, Elco E., D. Le Bars, A.H Essenfelder, S. Nirandjan, and P. Sayers. “The Impacts of Coastal Flooding and Sea Level Rise on Critical Infrastructure: A Novel Storyline Approach.” Sustainable and Resilient Infrastructure 0, no. 0 (November 15, 2022): 1–25. https://doi.org/10.1080/23789689.2022.2142741.

Lambert, Erwin, Dewi Le Bars, Heiko Goelzer, and Roderik S. W. van de Wal. “Correlations Between Sea-Level Components Are Driven by Regional Climate Change.” Earth’s Future 9, no. 2 (2021): e2020EF001825. https://doi.org/10.1029/2020EF001825.

Hermans, Tim H. J., Dewi Le Bars, Caroline A. Katsman, Carolina M. L. Camargo, Theo Gerkema, Francisco M. Calafat, Jonathan Tinker, and Aimée B. A. Slangen. (2020) “Drivers of Interannual Sea-Level Variability on the Northwestern European Shelf.” Journal of Geophysical Research: Oceans. https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020JC016325

Verschuur, J., Le Bars, D., Drijfhout, S., Katsman, C., de Vries, S., Ranasinghe, R., & Aarninkhof, S. (2020). Implications of uncertain Antarctic ice sheet dynamics for managing future coastal erosion: a probabilistic assessment. https://link.springer.com/article/10.1007%2Fs10584-020-02769-4

Marjolijn Haasnoot, Jaap Kwadijk, Jos Van Alphen, Dewi Le Bars, Bart van den Hurk, Ferdinand Diermanse, Ad van der Spek, Gualbert Oude Essink, Joost Delsman and Marjolein Mens (2019). Adaptation to uncertain sea-level rise; how uncertainty in Antarctic mass-loss impacts the coastal adaptation strategy of the Netherlands. ERL: https://iopscience.iop.org/article/10.1088/1748-9326/ab666c

van der Linden, E. C., Le Bars, D., Bintanja, R., & Hazeleger, W. (2019). Oceanic heat transport into the Arctic under high and low CO2 forcing. Climate Dynamics. https://doi.org/10.1007/s00382-019-04824-y

Le Bars D. (2018), Uncertainty in sea level rise projections due to the dependence between contributors, Earth's Future, doi: 10.1029/2018ef000849

Sterlini, P., Le Bars, D., de Vries, H. and Ridder, N. (2017), Understanding the spatial variation of sea level rise in the North Sea using satellite altimetry. J. Geophys. Res. Oceans, 122(8), 6498–6511. doi:10.1002/2017JC012907

Le Bars, D., S. Drijfhout and H. de Vries (2017), A high-end sea level rise probabilistic projection including rapid Antarctic ice sheet mass loss, ERL, doi:10.1088/1748-9326/aa6512.

Viebahn, J. P., A. S. von der Heydt, D. Le Bars, and H. A. Dijkstra (2016), Effects of Drake Passage on a strongly eddying global ocean, Paleoceanography, 31, 564–581, doi:10.1002/2015PA002888.

Kelly, K. A., K. Drushka, L. Thompson, D. Le Bars, and E. L. McDonagh (2016), Impact of slowdown of Atlantic overturning circulation on heat and freshwater transports, Geophys. Res. Lett., 43, doi:10.1002/2016GL069789.

Lambert, E., Le Bars, D., and de Ruijter, W. P. M.: The connection of the Indonesian Throughflow, South Indian Ocean Countercurrent and the Leeuwin Current, Ocean Sci., 12, 771-780, doi:10.5194/os-12-771-2016, 2016.

Le Bars, D., J. P. Viebahn, and H. A. Dijkstra (2016), A Southern Ocean Mode of Multidecadal Variability, Geophys. Res. Lett., 43, doi:10.1002/2016GL068177.

Lenaerts, J. T. M., D. Le Bars, L. van Kampenhout, M. Vizcaino, E. M. Enderlin, and M. R. van den Broeke (2015), Representing Greenland ice sheet freshwater fluxes in climate models, Geophys. Res. Lett., 42, 6373–6381, doi:10.1002/2015GL064738.

Le Bars, D., Durgadoo, J. V., Dijkstra, H. A., Biastoch, A., and De Ruijter, W. P. M.: An observed 20-year time series of Agulhas leakage, Ocean Sci., 10, 601-609, doi:10.5194/os-10-601-2014, 2014.

Ridderinkhof, W., D. Le Bars, A. S. von der Heydt and W. P. M. de Ruijter (2013), Dipoles of the South East Madagascar Current, Geophys. Res. Lett., 40, 558–562, doi:10.1002/grl.50157.

Le Bars, D., Dijkstra, H. A., and De Ruijter, W. P. M.: Impact of the Indonesian Throughflow on Agulhas leakage, Ocean Sci., 9, 773-785, doi:10.5194/os-9-773-2013, 2013.

Le Bars, D., Wilhelmus P. M. De Ruijter, and Henk A. Dijkstra, 2012: A New Regime of the Agulhas Current Retroflection: Turbulent Choking of Indian–Atlantic leakage. J. Phys. Oceanogr., 42, 1158–1172, doi: http://dx.doi.org/10.1175/JPO-D-11-0119.1


Other publications:

Stolte et al. 2023, Zeespiegelmonitor 2022, https://publications.deltares.nl/11209266_000.pdf

D. Le Bars, Past and future sea level in the Archipelago of Cabo Verde, De Bilt, 2022 | Technical report; TR-401 

 D. Le Bars, Past and future sea level around the BES islandsDe Bilt, 2022 | Technical report; TR-397

D. Le Bars, Dynamics and estimation of the Agulhas leakage, PhD dissertation, Utrecht University, 2014.


KNMI Klimaatberichten (in Dutch):

Kantelend ijs op Groenland en Antarctica (4/03/2023)

Zeespiegelstijging in Caribisch Nederland: wat vertellen de nieuwe KNMI’23-klimaatscenario’s? (17/11/2023)

Valt de West-Antarctische IJskap nog te redden? (2/11/2023)

Extreem weinig aangroei van zee-ijs rond Antarctica dit jaar (11/07/2023)

Zeespiegel stijgt bij Caribisch Nederland net wat sneller (11/05/2022)

Zeespiegel Nederlandse kust stijgt nu sneller door klimaatverandering (20/01/2022)

De Groenlandse ijskap smelt steeds sneller (24/12/2019)

Een minder warme Atlantische Oceaan (1/05/2018)

Instortende ijskliffen (15/11/2017)