IMIS - Marine Research Groups

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Dr Thomas, Helmuth

Previous institute
Publications (34)
Project

Koninklijk Nederlands Instituut voor Onderzoek der Zee (NIOZ), more

Carbon and nutrient cycling in the north sea and the Baltic Sea, more

A1 Publications (18) [show]
Whitmore, L.M.; Shiller, A.M.; Horner, T.J.; Xiang, Y.; Auro, M.E.; Bauch, D.; Dehairs, F.; Lam, P.J.; Li, J.; Maldonado, M.T.; Mears, C.; Newton, R.; Pasqualini, A.; Planquette, H.; Rember, R.; Thomas, H. (2022). Strong margin influence on the Arctic ocean barium cycle revealed by pan-Arctic synthesis. JGR: Oceans 127(4): e2021JC017417. https://dx.doi.org/10.1029/2021JC017417, more Van Dam, B.R.; Zeller, M.A.; Lopes, C.; Smyth, A.R.; Böttcher, M.E.; Osburn, C.L.; Zimmerman, T.; Pröfrock, D.; Fourqurean, J.W.; Thomas, H. (2021). Calcification-driven CO₂ emissions exceed “Blue Carbon” sequestration in a carbonate seagrass meadow. Science Advances 7(51): eabj1372. https://dx.doi.org/10.1126/sciadv.abj1372, more Marandino, C.; van Doorn, E.; McDonald, N.; Johnson, M.; Açma, B.; Brévière, E.; Campen, H.; Carou, S.; Cocco, E.; Endres, S.; Hilmi, N.; Hopkins, F.; Liss, P.; Maes, F.; Mårtensson, M.; Oeffner, J.; Oloyede, M.; Peters, A.; Quack, B.; Singh, P.; Thomas, H. (2020). From monodisciplinary via multidisciplinary to an interdisciplinary approach investigating air-sea interactions - a SOLAS initiative. Coast. Manage. 48(4): 238-256. https://hdl.handle.net/10.1080/08920753.2020.1773208, more Mears, C.; Thomas, H.; Henderson, P.B.; Charette, M.A.; MacIntyre, H.; Dehairs, F.; Monnin, C.; Mucci, A. (2020). Using ²²⁶Ra and ²²⁸Ra isotopes to distinguish water mass distribution in the Canadian Arctic Archipelago. Biogeosciences 17(20): 4937-4959. https://hdl.handle.net/10.5194/bg-17-4937-2020, more Meyer, M.; Pätsch, J.; Geyer, B.; Thomas, H. (2018). Revisiting the estimate of the North Sea air-sea flux of CO₂ in 2001/2002: the dominant role of different wind data products. JGR: Biogeosciences 123(5): 1511-1525. https://dx.doi.org/10.1029/2017JG004281, more Burt, W.J.; Thomas, H.; Hagens, M.; Pätsch, J.; Clargo, N.; Salt, L.A.; Winde, V.; Böttcher, M.E. (2016). Carbon sources in the North Sea evaluated by means of radium and stable carbon isotope tracers. Limnol. Oceanogr. 61: 666-683. dx.doi.org/10.1002/lno.10243, more Charette, M.A.; Lam, P.J.; Lohan, M.C.; Kwon, E.Y.; Hatje, V.; Jeandel, C.; Shiller, A.M.; Cutter, G.A.; Thomas, A.; Boyd, P.W.; Homoky, W.B.; Milne, A.; Thomas, H.; Andersson, P.S.; Porcelli, D.; Tanaka, T.; Geibert, W.; Dehairs, F.; Garcia-Orellana, J. (2016). Coastal ocean and shelf-sea biogeochemical cycling of trace elements and isotopes: lessons learned from GEOTRACES. Philos. Trans. - Royal Soc., Math. Phys. Eng. Sci. 374(2081): 19 pp. https://dx.doi.org/10.1098/rsta.2016.0076, more Salt, S.; Thomas, H.; Bozec, Y.; Borges, A.V.; de Baar, H.J.W (2016). The internal consistency of the North Sea carbonate system. J. Mar. Syst. 157: 52-64. dx.doi.org/10.1016/j.jmarsys.2015.11.008, more Clargo, N.C.; Salt, L.A.; Thomas, H.; de Baar, H.J.W. (2015). Rapid increase of observed DIC and pCO₂ in the surface waters of the North Sea in the 2001-2011 decade ascribed to climate change superimposed by biological processes. Mar. Chem. 177: 566-581. https://dx.doi.org/10.1016/j.marchem.2015.08.010, more Jiao, N.; Legendre, L.; Robinson, C.; Thomas, H.; Luo, Y.-W.; Dang, H.; Liu, J.; Zhang, R.; Tang, K.; Luo, T.; Li, C.; Wang, X.; Zhang, C. (2015). Comment on "Dilution limits dissolved organic carbon utilization in the deep ocean". Science (Wash.) 350(6267): 1483-1483. http://dx.doi.org/10.1126/science.aab2713, more Salt, L.A.; Thomas, H.; Prowe, A.E.; Borges, A.V.; Bozec, Y.; de Baar, H.J.W. (2013). Variability of North Sea pH and CO₂ in response to North Atlantic Oscillation forcing. J. Geophys. Res. Biogeosciences; 118(4): 1584-1592. http://dx.doi.org/10.1002/2013JG002306, more Thomas, H.; Shadwick, E.; Dehairs, F.; Lansard, B.; Mucci, A.; Navez, J.; Gratton, Y.; Prowe, F.; Chierici, M.; Fransson, A.; Papakyriakou, T.N.; Sternberg, E.; Miller, L.A.; Tremblay, J.-E.; Monnin, C. (2011). Barium and carbon fluxes in the Canadian Arctic Archipelago. J. Geophys. Res. 116(C9): 16 pp. http://dx.doi.org/10.1029/2011JC007120, more Bozec, Y.; Thomas, H.; Elkalay, K.; de Baar, H.J.W. (2005). The continental shelf pump for CO₂ in the North Sea: evidence from summer observation. Mar. Chem. 93: 131-147. https://dx.doi.org/10.1016/j.marchem.2004.07.006, more Bozec, Y.; Bakker, D.C.E.; Hartmann, C.; Thomas, H.; Bellerby, R.G.J.; Nightingale, P.D.; Riebesell, U.; Watson, A.J.; de Baar, H.J.W. (2005). The CO₂ system in a Redfield context during an iron enrichment experiment in the Southern Ocean. Mar. Chem. 95(1-2): 89-105. https://dx.doi.org/10.1016/j.marchem.2004.08.004, more Thomas, H.; Bozec, Y.; de Baar, H.J.W.; Elkalay, K.; Frankignoulle, M.; Schiettecatte, L.-S.; Borges, A.V. (2005). The carbon budget of the North Sea. Biogeosciences 2(1): 87-96. https://dx.doi.org/10.5194/bg-2-87-2005, more Thomas, H.; Bozec, Y.; Elkalay, K.; de Baar, H.J.W.; Borges, A.V.; Schiettecatte, L.-S. (2005). Controls of the surface water partial pressure of CO₂ in the North Sea. Biogeosciences 2(4): 323-334. https://dx.doi.org/10.5194/bg-2-323-2005, more Thomas, H.; Bozec, Y.; Elkalay, K.; de Baar, H.J.W. (2004). Enhanced open ocean storage of CO₂ from shelf sea pumping. Science (Wash.) 304(5673): 1005-1008. https://dx.doi.org/10.1126/science.1095491, more Thomas, H.; Bozec, Y.; Elkalay, K.; de Baar, H.J.W. (2004). Response to comment on ‘‘Enhanced open ocean storage of CO₂ from shelf sea pumping’’. Science (Wash.) 306(5701): 1477d, more
Peer reviewed publications (3) [show]
Huthnance, J.; Weisse, R.; Wahl, T.; Thomas, H.; Pietrzak, J.; Souza, A.J.; Van Heteren, S.; Schmelzer, N.; van Beusekom, J.; Colijn, F.; Haigh, I.; Hjøllo, S.; Holfort, J.; Kent, E.C.; Kühn, W.; Loewe, P.; Lorkowski, I.; Mork, K.A.; Pätsch, J.; Quante, M.; Salt, L.; Siddorn, J.; Smyth, T.; Sterl, A.; Woodworth, P. (2016). Recent change - North Sea, in: Quante, M. et al. North Sea region climate change assessment. Regional Climate Studies, : pp. 85-136. http://dx.doi.org/10.1007/978-3-319-39745-0_3, more Thomas, H.; Bozec, Y.; Elkalay, K.; de Baar, H.J.W.; Borges, A.V.; Schiettecatte, L.-S. (2005). Controls of the surface water partial pressure of CO₂ in the North Sea. Biogeosci. Discuss. 2(4): 757-777, more Thomas, H.; Bozec, Y.; de Baar, H.J.W.; Elkalay, K.; Frankignoulle, M.; Schiettecatte, L.-S.; Borges, A.V. (2004). The carbon budget of the North Sea. Biogeosci. Discuss. 1: 367-392, more
Book chapters (9) [show]
Elkalay, K.; Khalil, K.; Thomas, H.; Bozec, Y.; Ruardij, P.; de Baar, H. (2012). Biogeochemical 1D ERSEM ecosystem model applied to recent carbon dioxide and nutrient data in the North Sea, in: Jordán, F. et al. Models of the ecological hierarchy: from molecules to the ecosphere. Developments in environmental modelling, 25: pp. 275-294. https://dx.doi.org/10.1016/b978-0-444-59396-2.00017-1, more Thomas, H.; Shadwick, E.; DeHairs, F.; Lansard, B.; Navez, J.; Gratton, Y.; Prowe, F.; Mucci, A.; Chierici, M.; Fransson, A.; Papakyriakou, T.; Sternberg, E.; Miller, L.A. (2011). Barium and Carbon fluxes in the Canadian Arctic Archipelago, in: 43^rd international Liège colloquium on ocean dynamics "Tracers of physical and biogeochemical processes, past changes and ongoing anthropogenic impacts" - May 2-6, 2011. pp. 1, more MacCracken, M.; Escobar-Briones, E.; Gilbert, D.; Korotaev, G.; Naqvi, W.; Perillo, G.M.E.; Rixen, T.; Stanev, E.; Sundby, B.; Thomas, H.; Unger, D.; Urban Jr., E.R. (2008). Vulnerability of semi-enclosed marine systems to environmental disturbances, in: Urban Jr., E.R. et al. (Ed.) Watersheds, bays, and bounded seas: The science and management of semi-enclosed marine systems. Scientific Committee on Problems of the Environment (SCOPE) Series, 70: pp. 9-29, more Thomas, H.; Unger, D.; Zhang, J.; Liu, K.-K.; Shadwick, E.H. (2008). Biogeochemical cycling in semi-enclosed marine systems and continental margins, in: Urban Jr., E.R. et al. (Ed.) Watersheds, bays, and bounded seas: The science and management of semi-enclosed marine systems. Scientific Committee on Problems of the Environment (SCOPE) Series, 70: pp. 169-190, more Bozec, Y.; Thomas, H.; Schiettecatte, L.-S.; Borges, A.V.; Elkalay, K.; de Baar, H.J.W. (2005). Assessment of the processes controlling the seasonal variations of dissolved inorganic carbon in the North Sea, in: Bozec, Y. Process studies of the biological pump of carbon dioxide in the North Sea and Southern Ocean. pp. 75-111, more Bozec, Y.; Thomas, H.; Elkalay, K.; de Baar, H.J.W. (2005). The continental shelf pump for CO₂ in the North Sea: evidence from summer observation, in: Bozec, Y. Process studies of the biological pump of carbon dioxide in the North Sea and Southern Ocean. pp. 37-61, more Bozec, Y.; Bakker, D.C.E.; Hartmann, C.; Thomas, H.; Bellerby, R.G.J.; Nightingale, P.D.; Riebesell, U.; Watson, A.J.; de Baar, H.J.W. (2005). The CO₂ system in a Redfield context during an iron enrichment experiment in the Southern Ocean, in: Bozec, Y. Process studies of the biological pump of carbon dioxide in the North Sea and Southern Ocean. pp. 135-159, more Thomas, H.; Bozec, Y.; Elkalay, K.; de Baar, H.J.W. (2005). Enhanced open ocean storage of CO₂ from shelf sea pumping, in: Bozec, Y. Process studies of the biological pump of carbon dioxide in the North Sea and Southern Ocean. pp. 63-73, more Thomas, H.; Bozec, Y.; de Baar, H.J.W.; Elkalay, K.; Frankignoulle, M.; Schiettecatte, L.-S.; Borges, A.V. (2005). The carbon budget of the North Sea, in: Bozec, Y. Process studies of the biological pump of carbon dioxide in the North Sea and Southern Ocean. pp. 113-132, more
Other publications (2) [show]
Cullen, J.; Hay, A.; Ritchie, H.; Hartwell, S.; Kirchhoff, S.; Bowen, T.; Dowd, M.; Greenan, B.; Hamilton, J.; Hannah, C.G.; Lewis, M.; Perrie, W.; Sheng, J.; Smith, P.; Thomas, H.; Vézina, A. (2008). The Lunenburg Bay Project. CMOS Bulletin 36(6): 199-205, more Thomas, H.; Gattuso, J.P.; Smith, S.V. (2003). Coastal biogeochemistry at the EGS-AGU-EUG Joint Assembly, Nice, France, 6-11 April 2003. LOICZ Newsletter 28: 1-4, more
Thesis (co-)promotor (2) [show]
Salt, L.A. (2014). Process studies of the carbonate system in coastal and ocean environments of the Atlantic Ocean. PhD Thesis. Rijksuniversiteit Groningen: [s.l.]. ISBN 978-90-367-6851-1. 212 pp. hdl.handle.net/11370/ed2fd56e-0fd4-4cb0-a1c8-c11635b86c5b, more Bozec, Y. (2005). Process studies of the biological pump of carbon dioxide in the North Sea and Southern Ocean. PhD Thesis. Rijksuniversiteit Groningen: Groningen. ISBN 90-367-2355-8. 215 pp., more