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From small-scale variability to mesoscale stability in surface ocean pH: implications for air–sea CO <sub>2</sub> equilibration. <i>Biogeosciences 22(18)</i>: 5103-5121. <a href=\"https://dx.doi.org/10.5194/bg-22-5103-2025\" target=\"_blank\">https://dx.doi.org/10.5194/bg-22-5103-2025</a>","AutID":455135,"MonDate":null,"AnaDate":2025,"PeerRev":1,"outputType":"1_A1","OpenAcc":1},{"BRefID":437481,"RR":"<b>Humphreys, M.P.; Ossebaar, S.</b> (2025). Blank variability in coulometric measurements of dissolved inorganic carbon. <i>Ocean Sci. 21(6)</i>: 3123-3130. <a href=\"https://dx.doi.org/10.5194/os-21-3123-2025\" target=\"_blank\">https://dx.doi.org/10.5194/os-21-3123-2025</a>","AutID":455135,"MonDate":null,"AnaDate":2025,"PeerRev":1,"outputType":"1_A1","OpenAcc":1},{"BRefID":404454,"RR":"<b>Cala, B.A.; Sulpis, O.; Wolthers, M.; Humphreys, M.P.</b> (2024). Synthesis of In Situ Marine Calcium Carbonate Dissolution Kinetic Measurements in the Water Column. <i>Global Biogeochem. Cycles 38(9)</i>: e2023GB008009. <a href=\"https://dx.doi.org/10.1029/2023gb008009\" target=\"_blank\">https://dx.doi.org/10.1029/2023gb008009</a>","AutID":455135,"MonDate":null,"AnaDate":2024,"PeerRev":1,"outputType":"1_A1","OpenAcc":1},{"BRefID":404755,"RR":"<b>Delaigue, L.; Sulpis, O.; Reichart, G.-J.; Humphreys, M.P.</b> (2024). The changing biological carbon pump of the South Atlantic Ocean. <i>Global Biogeochem. Cycles 38(9)</i>: e2024GB008202. <a href=\"https://dx.doi.org/10.1029/2024gb008202\" target=\"_blank\">https://dx.doi.org/10.1029/2024gb008202</a>","AutID":455135,"MonDate":null,"AnaDate":2024,"PeerRev":1,"outputType":"1_A1","OpenAcc":1},{"BRefID":405182,"RR":"<b>Humphreys, M.P.</b> (2024). Temperature effect on seawater <i>f</i>CO<sub>2</sub> revisited: theoretical basis, uncertainty analysis and implications for parameterising carbonic acid equilibrium constants. <i>Ocean Sci. 20(5)</i>: 1325-1350. <a href=\"https://dx.doi.org/10.5194/os-20-1325-2024\" target=\"_blank\">https://dx.doi.org/10.5194/os-20-1325-2024</a>","AutID":455135,"MonDate":null,"AnaDate":2024,"PeerRev":1,"outputType":"1_A1","OpenAcc":1},{"BRefID":395490,"RR":"<b>Lauvset, S.K.; Lange, N.; Tanhua, T.; Bittig, H.C.; Olsen, A.; Kozyr, A.; Álvarez, M.; Azetsu-Scott, K.; Brown, P.J.; Carter, B.R.; Cotrim da Cunha, L.; Hoppema, M.; Humphreys, M.P.; Ishii, M.; Jeansson, E.; Murata, A.; Müller, J.D.; Pérez, F.F.; Schirnick, C.; Steinfeldt, R.; Suzuki, T.; Ulfsbo, A.; Velo, A.; Woosley, R.J.; Key, R.M.</b> (2024). The annual update GLODAPv2.2023: the global interior ocean biogeochemical data product. <i>ESSD 16(4)</i>: 2047-2072. <a href=\"https://dx.doi.org/10.5194/essd-16-2047-2024\" target=\"_blank\">https://dx.doi.org/10.5194/essd-16-2047-2024</a>","AutID":423319,"MonDate":null,"AnaDate":2024,"PeerRev":1,"outputType":"1_A1","OpenAcc":1},{"BRefID":392732,"RR":"<b>van de Mortel, H.; Delaigue, L.; Humphreys, M.P.; Middelburg, J.J; Ossebaar, S.; Bakker, K.; Alexandre, J.P.T.; van Leeuwen-Tolboom, A.W.E.; Wolthers, M.; Sulpis, O.</b> (2024). Laboratory observation of the buffering effect of aragonite dissolution at the seafloor. <i>JGR: Biogeosciences 129(2)</i>: e2023JG007581. <a href=\"https://dx.doi.org/10.1029/2023jg007581\" target=\"_blank\">https://dx.doi.org/10.1029/2023jg007581</a>","AutID":455135,"MonDate":null,"AnaDate":2024,"PeerRev":1,"outputType":"1_A1","OpenAcc":1},{"BRefID":381441,"RR":"<b>Lodeiro, P.; Rey-Castro, C.; David, C.; Humphreys, M.P.; Gledhill, M.</b> (2023). Proton binding characteristics of dissolved organic matter extracted from the North Atlantic. <i>Environ. Sci. Technol. 57(50)</i>: 21136-21144. <a href=\"https://dx.doi.org/10.1021/acs.est.3c01810\" target=\"_blank\">https://dx.doi.org/10.1021/acs.est.3c01810</a>","AutID":455135,"MonDate":null,"AnaDate":2023,"PeerRev":1,"outputType":"1_A1","OpenAcc":1},{"BRefID":354270,"RR":"<b>Clegg, S.L.; Humphreys, M.P.; Waters, J.F.; Turner, D.R.; Dickson, A.G.</b> (2022). Chemical speciation models based upon the Pitzer activity coefficient equations, including the propagation of uncertainties. II. Tris buffers in artificial seawater at 25 °C, and an assessment of the seawater ‘Total’ pH scale. <i>Mar. Chem. 244</i>: 104096. <a href=\"https://dx.doi.org/10.1016/j.marchem.2022.104096\" target=\"_blank\">https://dx.doi.org/10.1016/j.marchem.2022.104096</a>","AutID":455135,"MonDate":null,"AnaDate":2022,"PeerRev":1,"outputType":"1_A1","OpenAcc":1},{"BRefID":349413,"RR":"<b>Humphreys, M.P.; Meesters, E.H.; de Haas, H.; Karancz, S.; Delaigue, L.; Bakker, K.; Duineveld, G.; de Goeyse, S.; Haas, A.F.; Mienis, F.; Ossebaar, S.; van Duyl, F.C.</b> (2022). Dissolution of a submarine carbonate platform by a submerged lake of acidic seawater. <i>Biogeosciences 19(2)</i>: 347-358. <a href=\"https://dx.doi.org/10.5194/bg-19-347-2022\" target=\"_blank\">https://dx.doi.org/10.5194/bg-19-347-2022</a>","AutID":455135,"MonDate":null,"AnaDate":2022,"PeerRev":1,"outputType":"1_A1","OpenAcc":1},{"BRefID":352885,"RR":"<b>Humphreys, M.P.; Lewis, E.R.; Sharp, J.D.; Pierrot, D.</b> (2022). PyCO2SYS v1.8: marine carbonate system calculations in Python. <i>Geosci. Model Dev. 15(1)</i>: 15-43. <a href=\"https://dx.doi.org/10.5194/gmd-15-15-2022\" target=\"_blank\">https://dx.doi.org/10.5194/gmd-15-15-2022</a>","AutID":455135,"MonDate":null,"AnaDate":2022,"PeerRev":1,"outputType":"1_A1","OpenAcc":1},{"BRefID":353667,"RR":"<b>Humphreys, M.P.; Waters, J.F.; Turner, D.R.; Dickson, A.G.; Clegg, S.L.</b> (2022). Chemical speciation models based upon the Pitzer activity coefficient equations, including the propagation of uncertainties: Artificial seawater from 0 to 45 °C. <i>Mar. Chem. 244</i>: 104095. <a href=\"https://dx.doi.org/10.1016/j.marchem.2022.104095\" target=\"_blank\">https://dx.doi.org/10.1016/j.marchem.2022.104095</a>","AutID":455135,"MonDate":null,"AnaDate":2022,"PeerRev":1,"outputType":"1_A1","OpenAcc":1},{"BRefID":349397,"RR":"<b>Jiang, L.-Q.; Pierrot, D.; Wanninkhof, R.; Feely, R.A.; Tilbrook, B.; Alin, S.; Barbero, L.; Byrne, R.H.; Carter, B.R.; Dickson, A.G.; Gattuso, J.-P.; Greeley, D.; Hoppema, M.; Humphreys, M.P.; Karstensen, J.; Lange, N.; Lauvset, S.K.; Lewis, E.R.; Olsen, A.; Pérez, F.F.; Sabine, C.; Sharp, J.D.; Tanhua, T.; Trull, T.W.; Velo, A.; Allegra, A.J.; Barker, P.; Burger, E.; Cai, W.-J.; Chen, C.-T.A.; Cross, J.; Garcia, H.; Hernandez-Ayon, J.M.; Hu, X.; Kozyr, A.; Langdon, C.; Lee, K.; Salisbury, J.; Wang, Z.A.; Xue, L.</b> (2022). Best practice data standards for discrete chemical oceanographic observations. <i>Front. Mar. Sci. 8</i>: 705638. <a href=\"https://dx.doi.org/10.3389/fmars.2021.705638\" target=\"_blank\">https://dx.doi.org/10.3389/fmars.2021.705638</a>","AutID":455135,"MonDate":null,"AnaDate":2022,"PeerRev":1,"outputType":"1_A1","OpenAcc":1},{"BRefID":360404,"RR":"<b>Lauvset, Siv K.; Lange, Nico; Tanhua, Toste; Bittig, Henry C.; Olsen, Are; Kozyr, Alex; Alin, Simone; Álvarez, Marta; Azetsu-Scott, Kumiko; Barbero, Leticia; Becker, Susan; Brown, Peter J.; Carter, Brendan R.; da Cunha, Leticia Cotrim; Feely, Richard A.; Hoppema, Mario; Humphreys, Matthew P.; Ishii, Masao; Jeansson, Emil; Jiang, Li-Qing; Jones, Steve D.; Lo Monaco, Claire; Murata, Akihiko; Müller, Jens Daniel; Pérez, Fiz F.; Pfeil, Benjamin; Schirnick, Carsten; Steinfeldt, Reiner; Suzuki, Toru; Tilbrook, Bronte; Ulfsbo, Adam; Velo, Anton; Woosley, Ryan J.; Key, Robert M.</b> (2022). GLODAPv2.2022: the latest version of the global interior ocean biogeochemical data product. <i>ESSD 14(12)</i>: 5543-5572. <a href=\"https://dx.doi.org/10.5194/essd-14-5543-2022\" target=\"_blank\">https://dx.doi.org/10.5194/essd-14-5543-2022</a>","AutID":423319,"MonDate":null,"AnaDate":2022,"PeerRev":1,"outputType":"1_A1","OpenAcc":1},{"BRefID":355381,"RR":"<b>Ouyang, Z.; Collins, A.; Li, Y.; Qi, D.; Arrigo, K.R.; Zhuang, Y.; Nishino, S.; Humphreys, M.P.; Kosugi, N.; Murata, A.; Kirchmann, D.L.; Chen, L.; Chen, J.; Cai, W.-J.</b> (2022). Seasonal water mass evolution and non‐redfield dynamics enhance CO<sub>2</sub> uptake in the Chukchi Sea. <i>JGR: Oceans 127(8)</i>: e2021JC018326. <a href=\"https://dx.doi.org/10.1029/2021jc018326\" target=\"_blank\">https://dx.doi.org/10.1029/2021jc018326</a>","AutID":455135,"MonDate":null,"AnaDate":2022,"PeerRev":1,"outputType":"1_A1","OpenAcc":1},{"BRefID":352865,"RR":"<b>Sulpis, O.; Humphreys, M.P.; Wilhelmus, M.M.; Carroll, D.; Berelson, W.M.; Menemenlis, D.; Middelburg, J.J.; Adkins, J.F.</b> (2022). RADIv1: a non-steady-state early diagenetic model for ocean sediments in Julia and MATLAB/GNU Octave. <i>Geosci. Model Dev. 15(5)</i>: 2105-2131. <a href=\"https://dx.doi.org/10.5194/gmd-15-2105-2022\" target=\"_blank\">https://dx.doi.org/10.5194/gmd-15-2105-2022</a>","AutID":455135,"MonDate":null,"AnaDate":2022,"PeerRev":1,"outputType":"1_A1","OpenAcc":1},{"BRefID":351906,"RR":"<b>Živkovic, I.; Humphreys, M.P.; Achterberg, E.P.; Dumousseaud, C.; Woodward, E.M.S.; Bojanic, N.; Solic, M.; Bratkic, A.; Kotnik, J.; Vahcic, M.; Obu Vazner, K.; Begu, E.; Fajon, V.; Shlyapnikov, Y.; Horvat, M.</b> (2022). Enhanced mercury reduction in the South Atlantic Ocean during carbon remineralization. <i>Mar. Pollut. Bull. 178</i>: 113644. <a href=\"https://dx.doi.org/10.1016/j.marpolbul.2022.113644\" target=\"_blank\">https://dx.doi.org/10.1016/j.marpolbul.2022.113644</a>","AutID":455135,"MonDate":null,"AnaDate":2022,"PeerRev":1,"outputType":"1_A1","OpenAcc":1},{"BRefID":338484,"RR":"<b>Possenti, L.; Skjelvan, I.; Atamanchuk, D.; Tengberg, A.; Humphreys, M.P.; Loucaides, S.; Fernand, L.; Kaiser, J.</b> (2021). Norwegian Sea net community production estimated from O<sub>2</sub> and prototype CO<sub>2</sub> optode measurements on a Seaglider. <i>Ocean Sci. 17(2)</i>: 593-614. <a href=\"https://doi.org/10.5194/os-17-593-2021\" target=\"_blank\">https://doi.org/10.5194/os-17-593-2021</a>","AutID":455135,"MonDate":null,"AnaDate":2021,"PeerRev":1,"outputType":"1_A1","OpenAcc":1},{"BRefID":347156,"RR":"<b>Possenti, L.; Humphreys, M.P.; Bakker, D.C.E.; Cobas-García, M.; Fernand, L.; Lee, G.A.; Pallottino, F.; Loucaides, S.; Mowlem, M.C.; Kaiser, J.</b> (2021). Air-Sea Gas fluxes and remineralization from a novel combination of pH and O<sub>2</sub> sensors on a glider. <i>Front. Mar. Sci. 8</i>: 696772. <a href=\"https://dx.doi.org/10.3389/fmars.2021.696772\" target=\"_blank\">https://dx.doi.org/10.3389/fmars.2021.696772</a>","AutID":455135,"MonDate":null,"AnaDate":2021,"PeerRev":1,"outputType":"1_A1","OpenAcc":1},{"BRefID":338373,"RR":"<b>Rahlff, J.; Khodami, S.; Voskuhl, L.; Humphreys, M.; Stolle, C.; Martínez-Arbizu, P.; Wurl, O.; Ribas-Ribas, M.</b> (2021). Short-term responses to ocean acidification: effects on relative abundance of eukaryotic plankton from the tropical Timor Sea. <i>Mar. Ecol. Prog. Ser. 658</i>: 59-74. <a href=\"https://doi.org/10.3354/meps13561\" target=\"_blank\">https://doi.org/10.3354/meps13561</a>","AutID":423319,"MonDate":null,"AnaDate":2021,"PeerRev":1,"outputType":"1_A1","OpenAcc":1},{"BRefID":349291,"RR":"<b>Zhu, K.; Birchill, A.J.; Milne, A.; Ussher, S.; Humphreys, M.P.; Carr, N.; Mahaffey, C.; Lohan, M.C.; Achterberg, E.P.; Gledhill, M.</b> (2021). Equilibrium calculations of iron speciation and apparent iron solubility in the Celtic Sea at ambient seawater pH using the NICA-Donnan model. <i>Mar. Chem. 237</i>: 104038. <a href=\"https://dx.doi.org/10.1016/j.marchem.2021.104038\" target=\"_blank\">https://dx.doi.org/10.1016/j.marchem.2021.104038</a>","AutID":455135,"MonDate":null,"AnaDate":2021,"PeerRev":1,"outputType":"1_A1","OpenAcc":1},{"BRefID":328318,"RR":"<b>Donald, H.K.; Foster, G.L.; Fröhberg, N.; Swann, G.E.A.; Poulton, A.J.; Moore, C.M.; Humphreys, M.P.</b> (2020). The pH dependency of the boron isotopic composition of diatom opal (<i>Thalassiosira weissflogii</i>). <i>Biogeosciences 17(10)</i>: 2825-2837. <a href=\"https://dx.doi.org/10.5194/bg-17-2825-2020\" target=\"_blank\">https://dx.doi.org/10.5194/bg-17-2825-2020</a>","AutID":423319,"MonDate":null,"AnaDate":2020,"PeerRev":1,"outputType":"1_A1","OpenAcc":1}]},"urls":[{"URL":"https://orcid.org/0000-0002-9371-7128","externalID":"0000-0002-9371-7128","URLTypeCode":"ORCID","URLType":"ORCID"},{"URL":"www.nioz.nl/en/about/organisation/staff/matthew-humphreys","externalID":null,"URLTypeCode":null,"URLType":"Personal home page"}],"spcols":null,"thesterms":null,"taxterms":null,"pub":1,"newses":{"SesID":99036,"LoginName":"VLIZ2000\\ruthv","LoginID":79,"DD":"2020-10-09"},"updses":{"SesID":99040,"LoginName":"VLIZ2000\\ruthv","LoginID":79,"DD":"2020-10-09"},"urlmaps":[],"resmessage":"no id specified","complete":1}