Álvarez-Rodríguez, M.: The CO
2 system observations in the Mediterranean Sea: past, present and future, in: Designing Med-SHIP: a program for repeated oceanographic surveys, CIESM Workshop Monographs, No. 43, edited by: Briand, F., CIESM, Monaco, 41–50,
https://ciesm.org/catalog/index.php?article=1043 (last access: 14 January 2025), 2012.
Brutsaert, W.: Evaporation into the Atmosphere: Theory, History and Applications, Environmental Fluid Mechanics, Springer, Dordrecht, Netherlands, 302 pp., https://doi.org/10.1007/978-94-017-1497-6, 2013.
Bužančić, M., Gladan, Ž. N., Marasović, I., Kušpilić, G., and Grbec, B.: Eutrophication influence on phytoplankton community composition in three bays on the eastern Adriatic coast, Oceanologia, 58, 302–316, https://doi.org/10.1016/j.oceano.2016.05.003, 2016.
Cantoni, C., Luchetta, A., Celio, M., Cozzi, S., Raicich, F., and Catalano, G.: Carbonate system variability in the Gulf of Trieste (North Adriatic Sea), Estuarine, Coastal Shelf Sci., 115, 51–62, https://doi.org/10.1016/j.ecss.2012.07.006, 2012.
Cantoni, C., Luchetta, A., Chiggiato, J., Cozzi, S., Schroeder, K., and Langone, L.: Dense water flow and carbonate system in the southern Adriatic: A focus on the 2012 event, Mar. Geol., 375, 15–27, https://doi.org/10.1016/j.margeo.2015.08.013, 2016.
Cetinić, I., Viličić, D., Burić, Z., and Olujić, G.: Phytoplankton seasonality in a highly stratified karstic estuary (Krka, Adriatic Sea), Hydrobiologia, 555, 31–40, https://doi.org/10.1007/s10750-005-1107-6, 2006.
Cronin, M. F. and Sprintall, J.: Wind-and buoyancy-forced upper ocean, in: Elements of Physical Oceanography: A Derivative of the Encyclopedia of Ocean Sciences, 237–245, https://doi.org/10.1006/rwos.2001.0157, 2001.
Cukrov, N., Cindrić, A.-M., Omanović, D., and Cukrov, N.: Spatial distribution, ecological risk assessment, and source identification of metals in sediments of the Krka River Estuary (Croatia), Sustainability, 16, 1800, https://doi.org/10.3390/su16051800, 2024a.
Cukrov, N., Cukrov, N., and Omanović, D.: Early diagenetic processes in the sediments of the Krka River Estuary, J. Mar. Sci. Eng., 12, 466, https://doi.org/10.3390/jmse12030466, 2024b.
Cunliffe, M., Engel, A., Frka, S., Gašparović, B., Guitart, C., Murrell, J. C., Salter, M., Stolle, C., Upstill-Goddard, R., and Wurl, O.: Sea surface microlayers: A unified physicochemical and biological perspective of the air–ocean interface, Prog. Oceanogr., 109, 104–116, https://doi.org/10.1016/j.pocean.2012.08.004, 2013.
De Montety, V., Martin, J. B., Cohen, M. J., Foster, C., and Kurz, M. J.: Influence of diel biogeochemical cycles on carbonate equilibrium in a karst river, Chem. Geol., 283, 31–43, https://doi.org/10.1016/j.chemgeo.2010.12.025, 2011.
Dickson, A. G. and Millero, F. J.: A comparison of the equilibrium constants for the dissociation of carbonic acid in seawater media, Deep Sea Res. Part A, 34, 1733–1743, https://doi.org/10.1016/0198-0149(87)90021-5, 1987.
Dickson, A. G., Sabine, C. L., and Christian, J. R.: Guide to best practices for ocean CO
2 measurements, PICES Special Publication 3, North Pacific Marine Science Organization, 191 pp., ISBN 1-897176-07-4, 2007.
Doney, S. C., Fabry, V. J., Feely, R. A., and Kleypas, J. A.: Ocean Acidification: The Other CO
2 Problem, Annu. Rev. Mar. Sci., 1, 169–192, https://doi.org/10.1146/annurev.marine.010908.163834, 2009.
Engel, A., Bange, H. W., Cunliffe, M., Burrows, S. M., Friedrichs, G., Galgani, L., Herrmann, H., Hertkorn, N., Johnson, M., Liss, P. S., Quinn, P. K., Schartau, M., Soloviev, A., Stolle, C., Upstill-Goddard, R. C., Van Pinxteren, M., and Zäncker, B.: The ocean's vital skin: toward an integrated understanding of the sea surface microlayer, Front. Mar. Sci., 4, 165, https://doi.org/10.3389/fmars.2017.00165, 2017.
Fanning, K. A. and Pilson, M.: On the Spectrophotometric determination of dissolved silica in natural waters, Anal. Chem., 45, 136–140, https://doi.org/10.1021/ac60323a021, 1973.
Feng, Y., Warner, M. E., Zhang, Y., Sun, J., Fu, F.-X., Rose, J. M., and Hutchins, D. A.: Interactive effects of increased
pCO
2, temperature and irradiance on the marine coccolithophore Emiliania huxleyi (Prymnesiophyceae), Eur. J. Phycol., 43, 87–98, https://doi.org/10.1080/09670260701664674, 2008.
Frka, S., Kozarac, Z., and Ćosović, B.: Characterization and seasonal variations of surface active substances in the natural sea surface micro-layers of the coastal Middle Adriatic stations, Estuar. Coast. Shelf Sci., 85, 555–564, https://doi.org/10.1016/j.ecss.2009.09.023, 2009.
Garbe, C. S., Rutgersson, A., Boutin, J., De Leeuw, G., Delille, B., Fairall, C. W., Gruber, N., Hare, J., Ho, D. T., Johnson, M. T., Nightingale, P. D., Pettersson, H., Piskozub, J., Sahlée, E., Tsai, W., Ward, B., Woolf, D. K., and Zappa, C. J.: Transfer across the air–sea interface, in: Ocean–Atmosphere Interactions of Gases and Particles, edited by: Liss, P. S. and Johnson, M. T., Springer, Berlin, Heidelberg, Germany, 55–112, https://doi.org/10.1007/978-3-642-25643-1_2, 2014.
Gassen, L., Badewien, T. H., Ewald, J., Ribas-Ribas, M., and Wurl, O.: Temperature and Salinity Anomalies in the Sea Surface Microlayer of the South Pacific during Precipitation Events, J. Geophys. Res. Oceans, e2023JC019638, https://doi.org/10.1029/2023JC019638, 2023.
Gattuso, J.-P., Allemand, D., and Frankignoulle, M.: Photosynthesis and calcification at cellular, organismal and community levels in coral reefs: a review on interactions and control by carbonate chemistry, Am. Zool., 39, 160–183, https://doi.org/10.1093/icb/39.1.160, 1999.
Gattuso, J.-P., Magnan, A., Billé, R., Cheung, W. W. L., Howes, E. L., Joos, F., Allemand, D., Bopp, L., Cooley, S. R., Eakin, C. M., Hoegh-Guldberg, O., Kelly, R. P., Pörtner, H.-O., Rogers, A. D., Baxter, J. M., Laffoley, D., Osborn, D., Rankovic, A., Rochette, J., Sumaila, U. R., Treyer, S., and Turley, C.: Contrasting futures for ocean and society from different anthropogenic CO
2 emissions scenarios, Science, 349, aac4722, https://doi.org/10.1126/science.aac4722, 2015.
Hassoun, A. E. R., Gemayel, E., Krasakopoulou, E., Goyet, C., Abboud-Abi Saab, M., Guglielmi, V., Touratier, F., and Falco, C.: Acidification of the Mediterranean Sea from anthropogenic carbon penetration, Deep Sea Res. Part I, 102, 1–15, https://doi.org/10.1016/j.dsr.2015.04.005, 2015.
Hassoun, A. E. R., Bantelman, A., Canu, D., Comeau, S., Galdies, C., Gattuso, J.-P., Giani, M., Grelaud, M., Hendriks, I. E., Ibello, V., Idrissi, M., Krasakopoulou, E., Shaltout, N., Solidoro, C., Swarzenski, P. W., and Ziveri, P.: Ocean acidification research i
n the Mediterranean Sea: Status, trends and next steps, Front. Mar. Sci., 9, 892670, https://doi.org/10.3389/fmars.2022.892670, 2022.
Herring, P. J., Campbell, A. K., Whitfeld, M., and Maddock, L. (Eds.): Light and Life in the Sea, Cambridge University Press, Cambridge, UK, 366 pp., ISBN 978-0521392075, 1990.
Hoegh-Guldberg, O., Cai, R., Poloczanska, E. S., Brewer, P. G., Sundby, S., Hilmi, K., Fabry, V. J., Jung, S., Skirving, W., and Stone, D. A.: The ocean, in: Climate Change 2014: Impacts, Adaptation, and Vulnerability. Part B: Regional Aspects, edited by: Barros, V. R., Field, C. B., Dokken, D. J., Mastrandrea, M. D., Mach, K. J., Bilir, T. E., Chatterjee, M., Ebi, K. L., Estrada, Y. O., Genova, R. C., Girma, B., Kissel, E. S., Levy, A. N., MacCracken, S., Mastrandrea, P. R., and White, L. L., Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA, 1655–1731, https://doi.org/10.1017/CBO9781107415386.010, 2014.
Humphreys, M. P., Lewis, E. R., Sharp, J. D., and Pierrot, D.: PyCO2SYS v1.8: marine carbonate system calculations in Python, Geosci. Model Dev., 15, 15–43, https://doi.org/10.5194/gmd-15-15-2022, 2022.
IPCC: Climate Change 2021 – The Physical Science Basis, Contribution of Working Group I to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change, Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA, https://doi.org/10.1017/9781009157896, 2023.
Kapsenberg, L., Alliouane, S., Gazeau, F., Mousseau, L., and Gattuso, J.-P.: Coastal ocean acidification and increasing total alkalinity in the northwestern Mediterranean Sea, Ocean Sci., 13, 411–426, https://doi.org/10.5194/os-13-411-2017, 2017.
Laskov, C., Herzog, C., Lewandowski, J., and Hupfer, M.: Miniaturized photometrical methods for the rapid analysis of phosphate, ammonium, ferrous iron, and sulfate in pore water of freshwater sediments, Limnol. Oceanogr. Methods, 5, 63–71, https://doi.org/10.4319/lom.2007.5.63, 2007.
Lee, K., Kim, T.-W., Byrne, R. H., Millero, F. J., Feely, R. A., and Liu, Y.-M.: The universal ratio of boron to chlorinity for the North Pacific and North Atlantic oceans, Geochim. Cosmochim. Acta, 74, 1801–1811, https://doi.org/10.1016/j.gca.2009.12.027, 2010.
Liss, P. S. and Merlivat, L.: Air–sea gas exchange rates: introduction and synthesis, in: The Role of Air–Sea Exchange in Geochemical Cycling, edited by: Buat-Ménard, P., Springer, Dordrecht, Netherlands, 113–127, https://doi.org/10.1007/978-94-009-4738-2_5, 1986.
Liu, J., Hrustić, E., Du, J., Gašparović, B., Čanković, M., Cukrov, N., Zhu, Z., and Zhang, R.: Net submarine groundwater-derived dissolved inorganic nutrients and carbon input to the oligotrophic stratified karstic estuary of the Krka River (Adriatic Sea, Croatia), J. Geophys. Res.-Oceans, 124, 4334–4349, https://doi.org/10.1029/2018JC014814, 2019.
Marcinek, S., Santinelli, C., Cindrić, A.-M., Evangelista, V., Gonnelli, M., Layglon, N., Mounier, S., Lenoble, V., and Omanović, D.: Dissolved organic matter dynamics in the pristine Krka River estuary (Croatia), Mar. Chem., 225, 103848, https://doi.org/10.1016/j.marchem.2020.103848, 2020.
Mehrbach, C., Culberson, C. H., Hawley, J. E., and Pytkowicx, R. M.: Measurement of the apparent dissociation constants of carbonic acid in seawater at atmospheric pressure 1, Limnol. Oceanogr., 18, 897–907, https://doi.org/10.4319/lo.1973.18.6.0897, 1973.
Milinković, A., Penezić, A., Kušan, A. C., Gluščić, V., Žužul, S., Skejić, S., Šantić, D., Godec, R., Pehnec, G., Omanović, D., Engel, A., and Frka, S.: Variabilities of biochemical properties of the sea surface microlayer: Insights to the atmospheric deposition impacts, Sci. Total Environ., 838, 156440, https://doi.org/10.1016/j.scitotenv.2022.156440, 2022.
Nimick, D. A., Gammons, C. H., and Parker, S. R.: Diel biogeochemical processes and their effect on the aqueous chemistry of streams: A review, Chem. Geol., 283, 3–17, https://doi.org/10.1016/j.chemgeo.2010.08.017, 2011.
Orr, J. C., Fabry, V. J., Aumont, O., Bopp, L., Doney, S. C., Feely, R. A., Gnanadesikan, A., Gruber, N., Ishida, A., Joos, F., Key, R. M., Lindsay, K., Maier-Reimer, E., Matear, R., Monfray, P., Mouchet, A., Najjar, R. G., Plattner, G.-K., Rodgers, K. B., Sabine, C. L., Sarmiento, J. L., Schlitzer, R., Slater, R. D., Totterdell, I. J., Weirig, M.-F., Yamanaka, Y., and Yool, A.: Anthropogenic ocean acidification over the twenty-first century and its impact on calcifying organisms, Nature, 437, 681–686, https://doi.org/10.1038/nature04095, 2005.
Pecci, M., di Sarra, A., Sferlazzo, D., Anello, F., Di Iorio, T., Colella, S., Iaccarino, A., Marullo, S., Meloni, D., Monteleone, F., Pace, G., and Piacentino, S.: Ocean–atmosphere CO
2 flux at the Lampedusa Oceanographic Observatory,
https://www.lampedusa.enea.it/dataaccess/ocean_co2fluxes (last access: 19 August 2025), 2023.
Perez, F. F. and Fraga, F.: Association constant of fluoride and hydrogen ions in seawater, Mar. Chem., 21, 161–168, https://doi.org/10.1016/0304-4203(87)90036-3, 1987.
Pörtner, H.-O., Roberts, D. C., Masson-Delmotte, V., Zhai, P., Tignor, M., Poloczanska, E., and Weyer, N. M.: The ocean and cryosphere in a changing climate, IPCC Special Report on the Ocean and Cryosphere in a Changing Climate, 1155 pp.,
https://www.ipcc.ch/srocc/ (last access: 19 January 2025), 2019.
Poulson, S. R. and Sullivan, A. B.: Assessment of diel chemical and isotopic techniques to investigate biogeochemical cycles in the upper Klamath River, Oregon, USA, Chem. Geol., 269, 3–11, https://doi.org/10.1016/j.chemgeo.2009.05.016, 2010.
Prohić, E. and Juračić, M.: Heavy metals in sediments – problems concerning determination of the anthropogenic influence: study in the Krka River estuary, eastern Adriatic coast, Yugoslavia, Environ. Geol. Water Sci., 13, 145–151, https://doi.org/10.1007/BF01664699, 1989.
Ragazzola, F., Kolzenburg, R., Adani, M., Bordone, A., Cantoni, C., Cerrati, G., Ciuffardi, T., Cocito, S., Luchetta, A., Montagna, P., Nannini, M., Page, D. C., Peirano, A., Raiteri, G., and Lombardi, C.: Carbonate chemistry and temperature dynamics in an alga dominated habitat, Reg. Stud. Mar. Sci., 44, 101770, https://doi.org/10.1016/j.rsma.2021.101770, 2021.
Ribas-Ribas, M., Battaglia, G., Humphreys, M. P., and Wurl, O.: Impact of nonzero intercept gas transfer velocity parameterizations on global and regional ocean–atmosphere CO
2 fluxes, Geosciences, 9, 230, https://doi.org/10.3390/geosciences9050230, 2019.
Ribas-Ribas, M., Hamizah Mustaffa, N. I., Rahlff, J., Stolle, C., and Wurl, O.: Sea Surface Scanner (S
3): A catamaran for high-resolution measurements of biogeochemical properties of the sea surface microlayer, J. Atmos. Oceanic Technol., 34, 1433–1448, https://doi.org/10.1175/JTECH-D-17-0017.1, 2017.
Ribas-Ribas, M., López-Puertas, A., Wurl, O., and Frka, S.: Diel variability of thermohaline and carbon system parameters in the sea-surface microlayer and underlying water of a Mediterranean coastal site (Šibenik, Croatia), PANGAEA, [data set], https://doi.org/10.1594/PANGAEA.984017, 2025.
Robinson, A. R. and Golnaraghi, M.: The Physical and Dynamical Oceanography of the Mediterranean Sea, in: Ocean Processes in Climate Dynamics: Global and Mediterranean Examples, edited by: Malanotte-Rizzoli, P. and Robinson, A. R., Springer Netherlands, 255–306, https://doi.org/10.1007/978-94-011-0870-6_12, 1994.
RStudio Team: RStudio: integrated development environment for R, Posit Software, Boston, MA, USA, posit [code],
https://posit.co/ (last access: 25 March 2025), 2023.
Schlitzer, R.: Ocean Data View, Alfred-Wegener-Institut [software],
https://epic.awi.de/id/eprint/56921/ (last access: 10 December 2025), 2022.
Schneider, A., Tanhua, T., Körtzinger, A., and Wallace, D. W. R.: High anthropogenic carbon content in the eastern Mediterranean, J. Geophys. Res. Oceans, 115, https://doi.org/10.1029/2010JC006171, 2010.
Sharp, J. D., Pierrot, D., Humphreys, M. P., Epitalon, J.-M., Orr, J. C., Lewis, E. R., and Wallace, D. W. R.: CO2SYSv3 for MATLAB (v3.1), Zenodo [code], https://doi.org/10.5281/zenodo.4023039, 2020
Shaw, E. C., McNeil, B. I., and Tilbrook, B.: Impacts of ocean acidification in naturally variable coral reef flat ecosystems, J. Geophys. Res.-Oceans, 117, C03038, https://doi.org/10.1029/2011JC007655, 2012.
Soloviev, A. and Lukas, R.: The Near-Surface Layer of the Ocean: Structure, Dynamics and Applications, 2nd edn., Springer, Dordrecht, the Netherlands, 572 pp., ISBN 94-007-7621-7, 2013.
Stolle, C., Ribas-Ribas, M., Badewien, T. H., Barnes, J., Carpenter, L. J., Chance, R., Damgaard, L. R., Durán Quesada, A. M., Engel, A., Frka, S., Galgani, L., Gašparović, B., Gerriets, M., Hamizah Mustaffa, N. I., Herrmann, H., Kallajoki, L., Pereira, R., Radach, F., Revsbech, N. P., and Wurl, O.: The MILAN campaign: studying diel light effects on the air–sea interface, B. Am. Meteorol. Soc., 101, E146–E166, https://doi.org/10.1175/BAMS-D-17-0329.1, 2020.
Takahashi, T., Olafsson, J., Goddard, J. G., Chipman, D. W., and Sutherland, S. C.: Seasonal variation of CO
2 and nutrients in the high-latitude surface oceans: A comparative study, Glob. Biogeochem. Cycles, 7, 843–878, https://doi.org/10.1029/93GB02263, 1993.
Takahashi, T., Sutherland, S. C., Sweeney, C., Poisson, A., Metzl, N., Tilbrook, B., Bates, N., Wanninkhof, R., Feely, R. A., Sabine, C., Olafsson, J., and Nojiri, Y.: Global sea–air CO
2 flux based on climatological surface ocean pCO
2, and seasonal biological and temperature effects, Deep-Sea Res. Pt. II, 49, 1601–1622, https://doi.org/10.1016/S0967-0645(02)00003-6, 2002.
Takahashi, T., Sutherland, S. C., Chipman, D. W., Goddard, J. G., Ho, C., Newberger, T., Sweeney, C., and Munro, D. R.: Climatological distributions of pH, pCO
2, total CO
2, alkalinity, and CaCO
3 saturation in the global surface ocean, and temporal changes at selected locations, Mar. Chem., 164, 95–125, https://doi.org/10.1016/j.marchem.2014.06.004, 2014.
Van Heuven, S., Pierrot, D., Rae, J. W. B., Lewis, E., and Wallace, D. W. R.: MATLAB Program Developed for CO
2 System Calculations, Carbon Dioxide Information Analysis Center (CDIAC), Oak Ridge National Laboratory (ORNL) [code],
https://github.com/jamesorr/CO2SYS-MATLAB (last access: 10 December 2025), 2011.
Wanninkhof, R.: Relationship between wind speed and gas exchange over the ocean revisited, Limnol. Oceanogr. Methods, 12, 351–362, https://doi.org/10.4319/lom.2014.12.351, 2014.
Weiss, R. F.: Carbon dioxide in water and seawater: The solubility of a non-ideal gas, Mar. Chem., 2, 203–215, https://doi.org/10.1016/0304-4203(74)90015-2, 1974.
Wong, P. P., Losada, I. J., Gattuso, J.-P., Hinkel, J., Khattabi, A., McInnes, K. L., Saito, Y., and Sallenger, A.: Coastal systems and low-lying areas, in: Climate Change 2014: Impacts, Adaptation, and Vulnerability. Part A: Global and Sectoral Aspects, Contribution of Working Group II to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change, edited by: Field, C. B., Barros, V. R., Dokken, D. J., Mach, K. J., Mastrandrea, M. D., Bilir, T. E., Chatterjee, M., Ebi, K. L., Estrada, Y. O., Genova, R. C., Girma, B., Kissel, E. S., Levy, A. N., MacCracken, S., Mastrandrea, P. R., and White, L. L., Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA, 361–409, https://doi.org/10.1017/CBO9781107415379.010, 2014.
Wurl, O., Wurl, E., Miller, L., Johnson, K., and Vagle, S.: Formation and global distribution of sea-surface microlayers, Biogeosciences, 8, 121–135, https://doi.org/10.5194/bg-8-121-2011, 2011.
Wurl, O., Ekau, W., Landing, W. M., and Zappa, C. J.: Sea surface microlayer in a changing ocean – a perspective, Elem. Sci. Anthropocene, 5, 31, https://doi.org/10.1525/elementa.228, 2017.
Wurl, O., Landing, W. M., Mustaffa, N. I. H., Ribas-Ribas, M., Witte, C. R., and Zappa, C. J.: The Ocean's Skin Layer in the Tropics, in: Journal of Geophysical Research: Oceans, 124, 59–74, https://doi.org/10.1029/2018JC014021, 2019.
Yates, K. K., Dufore, C., Smiley, N., Jackson, C., and Halley, R. B.: Diurnal variation of oxygen and carbonate system parameters in Tampa Bay and Florida Bay, Mar. Chem., 104, 110–124, https://doi.org/10.1016/j.marchem.2006.12.008, 2007.
Zeebe, R. E. and Wolf-Gladrow, D. A.: CO
2 in Seawater: Equilibrium, Kinetics, Isotopes, Elsevier Oceanography Series, vol. 65, Elsevier, Amsterdam, ISBN 0444509461, 2001.
Zutic, V. and Legovic, T.: A film of organic matter at the fresh-water/sea-water interface of an estuary, Nature, 328, 612–614, https://doi.org/10.1038/328612a0, 1987.
