Articles | Volume 20, issue 16
https://doi.org/10.5194/bg-20-3459-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-20-3459-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
18 Aug 2023
Research article |
| 18 Aug 2023
| 18 Aug 2023
Alkalinity generation from carbonate weathering in a silicate-dominated headwater catchment at Iskorasfjellet, northern Norway
Institute of Carbon Cycles, Helmholtz-Zentrum Hereon, 21502 Geesthacht, Germany
Section Permafrost Research, Alfred Wegener Institute Helmholtz Centre for Polar and Marine
Research, 14473 Potsdam, Germany
Institute for Chemistry and Biology of the Marine Environment (ICBM),
University of Oldenburg, 26129 Oldenburg, Germany
Hugues Lantuit
Section Permafrost Research, Alfred Wegener Institute Helmholtz Centre for Polar and Marine
Research, 14473 Potsdam, Germany
Institute for Geosciences, University of Potsdam, 14476 Potsdam,
Germany
Michael Ernst Böttcher
Geochemistry and Isotope Biogeochemistry, Leibniz Institute for Baltic
Sea Research (IOW), 18119 Warnemünde, Germany
Marine Geochemistry, University of Greifswald, 17489 Greifswald,
Germany
Interdisciplinary Faculty, University of Rostock, 18059 Rostock,
Germany
Jens Hartmann
Institute for Geology, Center for Earth System Research and
Sustainability, University of Hamburg, 20146 Hamburg, Germany
Antje Eulenburg
Section Permafrost Research, Alfred Wegener Institute Helmholtz Centre for Polar and Marine
Research, 14473 Potsdam, Germany
Institute of Carbon Cycles, Helmholtz-Zentrum Hereon, 21502 Geesthacht, Germany
Institute for Chemistry and Biology of the Marine Environment (ICBM),
University of Oldenburg, 26129 Oldenburg, Germany
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Revised manuscript not accepted
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Chantal Mears, Helmuth Thomas, Paul B. Henderson, Matthew A. Charette, Hugh MacIntyre, Frank Dehairs, Christophe Monnin, and Alfonso Mucci
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Cited articles
Aas, W., Eckhardt, S., Fiebig, M., Solberg, S., Platt, S. M., Yttri, K. E.,
and Zwaaftink, C. G.: Monitoring of long-range transported air pollutants in
Norway: NILU report 13/2021, Norwegian Environment Agency, Kjeller, ISBN 978-82-425-3040-0, 2021.
Amiotte Suchet, P., Probst, J.-L., and Ludwig, W.: Worldwide distribution of
continental rock lithology: Implications for the atmospheric/soil CO2
uptake by continental weathering and alkalinity river transport to the
oceans, Global Biogeochem. Cy., 17, 1038, https://doi.org/10.1029/2002GB001891,
2003.
Amundson, R., Stern, L., Baisden, T., and Wang, Y.: The isotopic composition
of soil and soil-respired CO2, Geoderma, 82, 83–114,
https://doi.org/10.1016/S0016-7061(97)00098-0, 1998.
Appelo, C., Verweij, E., and Schäfer, H.: A hydrogeochemical transport
model for an oxidation experiment with pyrite/calcite/exchangers/organic
matter containing sand, Appl. Geochem., 13, 257–268,
https://doi.org/10.1016/S0883-2927(97)00070-X, 1998.
Beel, C. R., Heslop, J. K., Orwin, J. F., Pope, M. A., Schevers, A. J.,
Hung, J. K. Y., Lafrenière, M. J., and Lamoureux, S. F.: Emerging
dominance of summer rainfall driving High Arctic terrestrial-aquatic
connectivity, Nat. Commun., 12, 1448,
https://doi.org/10.1038/s41467-021-21759-3, 2021.
Berger, T. W., Türtscher, S., Berger, P., and Lindebner, L.: A slight
recovery of soils from Acid Rain over the last three decades is not
reflected in the macro nutrition of beech (Fagus sylvatica) at 97 forest
stands of the Vienna Woods, Environ. Pollut.,
216, 624–635, https://doi.org/10.1016/j.envpol.2016.06.024, 2016.
Berner, E. K. and Berner, R. A.: The global water cycle: Geochemistry and
environment, Prentice-Hall, Inc, Englewood Cliffs, 397 pp., ISBN 10 0133571955, 1987.
Berner, R. A., Lasaga, A. C., and Garrels, R. M.: The carbonate-silicate
geochemical cycle and its effect on atmospheric carbon dioxide over the past
100 million years, Am. J. Sci., 283, 641–683,
https://doi.org/10.2475/ajs.283.7.641, 1983.
Blum, J. D., Gazis, C. A., Jacobson, A. D., and Page Chamberlain, C.:
Carbonate versus silicate weathering in the Raikhot watershed within the
High Himalayan Crystalline Series, Geology, 26, 411,
https://doi.org/10.1130/0091-7613(1998)026<0411:CVSWIT>2.3.CO;2, 1998.
Böttcher, M. E.: The Stable Isotopic Geochemistry of the Sulfur and
Carbon Cycles in a Modern Karst Environment, Isot. Environ.
Health S., 35, 39–61, https://doi.org/10.1080/10256019908234078, 1999.
Böttcher, M. E. and Schmiedinger, I.: The impact of temperature on the
water isotope (2H
Braathen, A. and Davidsen, B.: Structure and stratigraphy of the
Palaeoproterozoic Karasjok Greenstone Belt, north Norway – regional
implications, Norsk Geol. Tidsskr., 80, 33–50,
https://doi.org/10.1080/002919600750042663, 2000.
Brand, W. A. and Coplen, T. B.: Stable isotope deltas: tiny, yet robust
signatures in nature, Isot. Environ.
Health S., 48,
393–409, https://doi.org/10.1080/10256016.2012.666977, 2012.
Campeau, A., Wallin, M. B., Giesler, R., Löfgren, S., Mörth, C.-M.,
Schiff, S., Venkiteswaran, J. J., and Bishop, K.: Multiple sources and sinks
of dissolved inorganic carbon across Swedish streams, refocusing the lens of
stable C isotopes, Sci. Rep., 7, 9158,
https://doi.org/10.1038/s41598-017-09049-9, 2017.
Camporese, M., Penna, D., Borga, M., and Paniconi, C.: A field and modeling
study of nonlinear storage-discharge dynamics for an Alpine headwater
catchment, Water Resour. Res., 50, 806–822, https://doi.org/10.1002/2013WR013604, 2014.
Cerling, T. E., Solomon, D., Quade, J., and Bowman, J. R.: On the isotopic
composition of carbon in soil carbon dioxide, Geochim. Cosmochim.
Ac., 55, 3403–3405, https://doi.org/10.1016/0016-7037(91)90498-T, 1991.
Chekushin, V. A., Bogatyrev, I. V., Caritat, P. de, Niskavaara, H., and
Reimann, C.: Annual atmospheric deposition of 16 elements in eight
catchments of the central Barents region, Sci. Total Environ.,
220, 95–114, https://doi.org/10.1016/S0048-9697(98)00247-2, 1998.
Conrad, O., Bechtel, B., Bock, M., Dietrich, H., Fischer, E., Gerlitz, L., Wehberg, J., Wichmann, V., and Böhner, J.: System for Automated Geoscientific Analyses (SAGA) v. 2.1.4, Geosci. Model Dev., 8, 1991–2007, https://doi.org/10.5194/gmd-8-1991-2015, 2015.
Davidson, G. R.: The stable isotopic composition and measurement of carbon
in soil CO2, Geochim. Cosmochim. Ac., 59, 2485–2489,
https://doi.org/10.1016/0016-7037(95)00143-3, 1995.
Deines, P., Langmuir, D., and Harmon, R. S.: Stable carbon isotope ratios
and the existence of a gas phase in the evolution of carbonate ground
waters, Geochim. Cosmochim. Ac., 38, 1147–1164,
https://doi.org/10.1016/0016-7037(74)90010-6, 1974.
Didan, K., Munoz, A. B., Solano, R., and Huete, A.: MOD13Q1 v006:
MODIS/Terra Vegetation Indices 16-Day L3 Global 250 m SIN Grid, Land
Processes Distributed Active Archive Center (LP DAAC) [data set], https://doi.org/10.5067/MODIS/MOD13Q1.006,
2015.
Dingman, S. L.: Hydrology of the Glenn Creek watershed, Tanana River Basin,
central Alaska: Res. Rep. 297, Cold Regions Research and Engineering
Laboratory, Hanover, New Hampshire, USA, https://hdl.handle.net/11681/5740 (last access: 15 August 2022), 1971.
Drake, T. W., Tank, S. E., Zhulidov, A. V., Holmes, R. M., Gurtovaya, T.,
and Spencer, R. G. M.: Increasing Alkalinity Export from Large Russian
Arctic Rivers, Environ. Sci. Technol., 52, 8302–8308,
https://doi.org/10.1021/acs.est.8b01051, 2018.
ESRI: Environmental Systems Research Institute (ESRI): ArcGIS pro: Release 2.9, ESRI, Redlands, USA, 2022.
Frey, K. E. and McClelland, J. W.: Impacts of permafrost degradation on
arctic river biogeochemistry, Hydrol. Process., 23, 169–182,
https://doi.org/10.1002/hyp.7196, 2009.
Fritz, P., Drimmie, R. J., Frape, S. K., and O'Shea, K.: The isotopic
composition of precipitation and groundwater in Canada, IAEA, International
Atomic Energy Agency (IAEA), ISBN 92-0-040087-6, 1987.
Gaillardet, J., Dupré, B., Louvat, P., and Allègre, C. J.: Global
silicate weathering and CO2 consumption rates deduced from the chemistry of
large rivers, Chem. Geol., 159, 3–30,
https://doi.org/10.1016/S0009-2541(99)00031-5, 1999.
Garrels, R. M. and Berner, R. A.: The Global Carbonate-Silicate Sedimentary
System – Some Feedback Relations, in: Biomineralization and Biological
Metal Accumulation, edited by: Westbroek, P. and De Jong, E. W., Springer
Netherlands, Dordrecht, 73–87, ISBN 13 978-94-009-7946-8, 1983.
Gislason, S. R., Oelkers, E. H., Eiriksdottir, E. S., Kardjilov, M. I.,
Gisladottir, G., Sigfusson, B., Snorrason, A., Elefsen, S., Hardardottir,
J., Torssander, P., and Oskarsson, N.: Direct evidence of the feedback
between climate and weathering, Earth Planet. Sc. Lett., 277,
213–222, https://doi.org/10.1016/j.epsl.2008.10.018, 2009.
Goll, D. S., Moosdorf, N., Hartmann, J., and Brovkin, V.: Climate-driven
changes in chemical weathering and associated phosphorus release since 1850:
Implications for the land carbon balance, Geophys. Res. Lett., 41,
3553–3558, https://doi.org/10.1002/2014GL059471, 2014.
Hartmann, J.: Bicarbonate-fluxes and CO2-consumption by chemical weathering
on the Japanese Archipelago – Application of a multi-lithological model
framework, Chem. Geol., 265, 237–271,
https://doi.org/10.1016/j.chemgeo.2009.03.024, 2009.
Hartmann, J. and Moosdorf, N.: The new global lithological map database
GLiM: A representation of rock properties at the Earth surface, Geochem.
Geophy. Geosys., 13, 119, https://doi.org/10.1029/2012GC004370, 2012.
Hartmann, J., Jansen, N., Dürr, H. H., Kempe, S., and Köhler, P.:
Global CO2-consumption by chemical weathering: What is the contribution of
highly active weathering regions?, Global Planet. Change, 69,
185–194, https://doi.org/10.1016/j.gloplacha.2009.07.007, 2009.
Hill, T. and Neal, C.: Spatial and temporal variation in pH, alkalinity and conductivity in surface runoff and groundwater for the Upper River Severn catchment, Hydrol. Earth Syst. Sci., 1, 697–715, https://doi.org/10.5194/hess-1-697-1997, 1997.
Hoefs, J.: Ein Beitrag zur Isotopengeochemie des Kohlenstoffs in magmatischen Gesteinen: A contribution on the isotope geochemistry of carbon in igneous rocks, Contrib. Mineral. Petr., 41, 277–300, https://doi.org/10.1007/BF00372168, 1973.
Huete, A., Didan, K., Miura, T., Rodriguez, E., Gao, X., and Ferreira, L.:
Overview of the radiometric and biophysical performance of the MODIS
vegetation indices, Remote Sens. Environ., 83, 195–213,
https://doi.org/10.1016/S0034-4257(02)00096-2, 2002.
International Atomic Energy Agency: Global Network of Isotopes in
Precipitation, The GNIP Database, https://nucleus.iaea.org/wiser (last access: 31 August 2022), 2020.
Jacobson, A. D., Blum, J. D., Chamberlain, C., Poage, M. A., and Sloan, V.
F.: Ca
Jacobson, A. D., Blum, J. D., Chamberlain, C., Craw, D., and Koons, P. O.:
Climatic and tectonic controls on chemical weathering in the New Zealand
Southern Alps, Geochim. Cosmochim. Ac., 67, 29–46,
https://doi.org/10.1016/S0016-7037(02)01053-0, 2003.
Jacobson, A. D., Grace Andrews, M., Lehn, G. O., and Holmden, C.: Silicate
versus carbonate weathering in Iceland: New insights from Ca isotopes, Earth
Planet. Sc. Lett., 416, 132–142,
https://doi.org/10.1016/j.epsl.2015.01.030, 2015.
Jones, J. B. and Mulholland, P. J.: Influence of drainage basin topography
and elevation on carbon dioxide and methane supersaturation of stream water,
Biogeochemistry, 40, 57–72, https://doi.org/10.1023/A:1005914121280, 1998.
Kempe, S.: Long-term records of CO2 pressure fluctuations in fresh waters,
Mitt. Geol-Paläont. Inst. Univ. Hamburg; SCOPE/UNEP Sonderband, 52,
91–332, https://www.karstwanderweg.de/publika/gpi/52/116-120/index.htm (last access: 15 August 2022), 1982.
Kjellman, S. E., Axelsson, P. E., Etzelmüller, B., Westermann, S., and
Sannel, A. B. K.: Holocene development of subarctic permafrost peatlands in
Finnmark, northern Norway, Holocene, 28, 1855–1869,
https://doi.org/10.1177/0959683618798126, 2018.
Lag, J.: Soil Map Norway – Jordbunnskart, Norges Landbrukshogskole,
https://esdac.jrc.ec.europa.eu/content/soil-map-norway-jordbunnskart (last access: 15 August 2022),
1983.
Land, L. S.: The isotopic and trace element geochemistry of dolomite: the
state of the art, in: Concepts and Models of Dolomitization, edited by: Zenger, D. H.,
Dunham, J. B., and Ethington, R. L., SEPM (Society for Sedimentary
Geology), 87–110, ISBN 10 0918985080, 1980.
Lasaga, A. C.: Chemical kinetics of water-rock interactions, J. Geophys.
Res., 89, 4009–4025, https://doi.org/10.1029/JB089iB06p04009, 1984.
Lehmann, N., Lantuit, H., Böttcher, M. E., Hartmann, J., and Thomas, H.: Alkalinity, DIC, δ13C-DIC, major and trace elements, and stable water isotopes data in water samples from a degrading permafrost landscape at subarctic Iskorasfjellet, northern Norway, PANGAEA [data set], https://doi.org/10.1594/PANGAEA.952905, 2022.
Lehn, G. O., Jacobson, A. D., Douglas, T. A., McClelland, J. W., Barker, A.
J., and Khosh, M. S.: Constraining seasonal active layer dynamics and
chemical weathering reactions occurring in North Slope Alaskan watersheds
with major ion and isotope (δ34S
Li, S., Xia, X., Tan, X., and Zhang, Q.: Effects of catchment and riparian
landscape setting on water chemistry and seasonal evolution of water quality
in the upper Han River basin, China, PloS one, 8, e53163,
https://doi.org/10.1371/journal.pone.0053163, 2013.
Li, S.-L., Calmels, D., Han, G., Gaillardet, J., and Liu, C.-Q.: Sulfuric
acid as an agent of carbonate weathering constrained by δ13CDIC:
Examples from Southwest China, Earth Planet. Sc. Lett., 270,
189–199, https://doi.org/10.1016/j.epsl.2008.02.039, 2008.
Li, S.-L., Liu, C.-Q., Li, J., Lang, Y.-C., Ding, H., and Li, L.:
Geochemistry of dissolved inorganic carbon and carbonate weathering in a
small typical karstic catchment of Southwest China: Isotopic and chemical
constraints, Chem. Geol., 277, 301–309,
https://doi.org/10.1016/j.chemgeo.2010.08.013, 2010.
Liu, J. and Han, G.: Effects of chemical weathering and CO2 outgassing on
δ13CDIC signals in a karst watershed, J. Hydrol., 589, 125192,
https://doi.org/10.1016/j.jhydrol.2020.125192, 2020.
Liu, Z., Macpherson, G. L., Groves, C., Martin, J. B., Yuan, D., and Zeng,
S.: Large and active CO2 uptake by coupled carbonate weathering,
Earth-Sci. Rev., 182, 42–49, https://doi.org/10.1016/j.earscirev.2018.05.007,
2018.
Macpherson, G. L., Sullivan, P. L., Stotler, R. L., Norwood, B. S., Chudaev,
O., Kharaka, Y., Harmon, R., Millot, R., and Shouakar-Stash, O.: Increasing
groundwater CO2 in a mid-continent tallgrass prairie: Controlling factors,
E3S Web Conf., 98, 6008, https://doi.org/10.1051/e3sconf/20199806008, 2019.
Marx, A., Dusek, J., Jankovec, J., Sanda, M., Vogel, T., van Geldern, R.,
Hartmann, J., and Barth, J. A. C.: A review of CO2 and associated carbon
dynamics in headwater streams: A global perspective, Rev. Geophys., 55,
560–585, https://doi.org/10.1002/2016RG000547, 2017a.
Marx, A., Hintze, S., Sanda, M., Jankovec, J., Oulehle, F., Dusek, J.,
Vitvar, T., Vogel, T., van Geldern, R., and Barth, J. A. C.: Acid rain
footprint three decades after peak deposition: Long-term recovery from
pollutant sulphate in the Uhlirska catchment (Czech Republic), Sci.
Total Environ., 598, 1037–1049,
https://doi.org/10.1016/j.scitotenv.2017.04.109, 2017b.
Marx, A., Conrad, M., Aizinger, V., Prechtel, A., van Geldern, R., and Barth, J. A. C.: Groundwater data improve modelling of headwater stream CO2 outgassing with a stable DIC isotope approach, Biogeosciences, 15, 3093–3106, https://doi.org/10.5194/bg-15-3093-2018, 2018.
McGivney, E., Gustafsson, J. P., Belyazid, S., Zetterberg, T., and Löfgren, S.: Assessing the impact of acid rain and forest harvest intensity with the HD-MINTEQ model – soil chemistry of three Swedish conifer sites from 1880 to 2080, SOIL, 5, 63–77, https://doi.org/10.5194/soil-5-63-2019, 2019.
McGlynn, B. L. and McDonnell, J. J.: Quantifying the relative contributions
of riparian and hillslope zones to catchment runoff, Water Resour. Res., 39,
211, https://doi.org/10.1029/2003WR002091, 2003a.
McGlynn, B. L. and McDonnell, J. J.: Role of discrete landscape units in
controlling catchment dissolved organic carbon dynamics, Water Resour. Res.,
39, 251, https://doi.org/10.1029/2002WR001525, 2003b.
McGlynn, B. L. and Seibert, J.: Distributed assessment of contributing area
and riparian buffering along stream networks, Water Resour. Res., 39, 331,
https://doi.org/10.1029/2002WR001521, 2003.
McGuire, K. J. and McDonnell, J. J.: Hydrological connectivity of hillslopes
and streams: Characteristic time scales and nonlinearities, Water Resour.
Res., 46, 400, https://doi.org/10.1029/2010WR009341, 2010.
McNamara, J. P., Kane, D. L., and Hinzman, L. D.: Hydrograph separations in
an arctic watershed using mixing model and graphical techniques, Water
Resour. Res., 33, 1707–1719, https://doi.org/10.1029/97WR01033, 1997.
Meybeck, M.: Composition chimique des ruisseaux non pollués en France.
Chemical composition of headwater streams in France, sgeol, 39, 3–77,
https://doi.org/10.3406/sgeol.1986.1719, 1986.
Meybeck, M.: Global chemical weathering of surficial rocks estimated from
river dissolved loads, Am. J. Sci., 287, 401–428,
https://doi.org/10.2475/ajs.287.5.401, 1987.
Meyboom, P.: Groundwater Studies in the Assiboine River Drainage Basin. Part
II: Hydrolofic Characteristics of Phreatophytic Vegetation in South-Central
Saskatchewan, Geological Survey of Canada, Ottawa, Canada, https://doi.org/10.4095/101495, 1967.
Michaelis, J.: Carbonate rock dissolution under intermediate system
conditions, in: Progress in Hydrogeochemistry: Organics – Carbonate Systems
– Silicate Systems – Microbiology – Models, edited by: Mattheß, G., Frimmel, F.,
Hirsch, P., Schulz, H. D., and Usdowski, E., Springer Berlin Heidelberg,
Berlin, Heidelberg, 167–174, ISBN 13 978-3540540342, 1992.
Michaelis, J., Usdowski, E., and Menschel, G.: Partitioning of 13 C and 12 C
on the degassing of CO2 and the precipitation of calcite; Rayleigh-type
fractionation and a kinetic model, Am. J. Sci., 285,
318–327, https://doi.org/10.2475/ajs.285.4.318, 1985.
Millero, F. J.: The thermodynamics of the carbonate system in seawater,
Geochim. Cosmochim. Ac., 43, 1651–1661,
https://doi.org/10.1016/0016-7037(79)90184-4, 1979.
Millot, R., Gaillardet, J., Dupré, B., and Allègre, C. J.: The
global control of silicate weathering rates and the coupling with physical
erosion: new insights from rivers of the Canadian Shield, Earth
Planet. Sc. Lett., 196, 83–98, https://doi.org/10.1016/S0012-821X(01)00599-4,
2002.
Moore, J., Jacobson, A. D., Holmden, C., and Craw, D.: Tracking the
relationship between mountain uplift, silicate weathering, and long-term CO2
consumption with Ca isotopes: Southern Alps, New Zealand, Chem. Geol.,
341, 110–127, https://doi.org/10.1016/j.chemgeo.2013.01.005, 2013.
Moosdorf, N., Hartmann, J., and Lauerwald, R.: Changes in dissolved silica
mobilization into river systems draining North America until the period
2081–2100, J. Geochem. Explor., 110, 31–39,
https://doi.org/10.1016/j.gexplo.2010.09.001, 2011.
Myrabø, S.: Temporal and spatial scale of response area and groundwater
variation in Till, Hydrol. Process., 11, 1861–1880,
https://doi.org/10.1002/(SICI)1099-1085(199711)11:14<1861::AID-HYP535>3.0.CO;2-P,
1997.
NGU: Berggrunn Data N250, Geological Survey of Norway,
https://www.ngu.no/geologiske-kart/datasett (last access: 18 March 2022), 2022.
Obu, J., Westermann, S., Bartsch, A., Berdnikov, N., Christiansen, H. H.,
Dashtseren, A., Delaloye, R., Elberling, B., Etzelmüller, B., Kholodov,
A., Khomutov, A., Kääb, A., Leibman, M. O., Lewkowicz, A. G., Panda,
S. K., Romanovsky, V., Way, R. G., Westergaard-Nielsen, A., Wu, T., Yamkhin,
J., and Zou, D.: Northern Hemisphere permafrost map based on TTOP modelling
for 2000–2016 at 1 km2 scale, Earth-Sci. Rev., 193, 299–316,
https://doi.org/10.1016/j.earscirev.2019.04.023, 2019.
O'Leary, M. H.: Carbon Isotopes in Photosynthesis, BioScience, 38, 328–336,
https://doi.org/10.2307/1310735, 1988.
Oliva, P., Dupré, B., Martin, F., and Viers, J.: The role of trace
minerals in chemical weathering in a high-elevation granitic watershed
(Estibère, France): Chemical and mineralogical evidence, Geochim.
Cosmochim. Ac., 68, 2223–2243, https://doi.org/10.1016/j.gca.2003.10.043, 2004.
Oliver, L., Harris, N., Bickle, M., Chapman, H., Dise, N., and Horstwood,
M.: Silicate weathering rates decoupled from the 87Sr
Olsen, L.: Stadials and interstadials during the Weichsel glackiation on
Finnmarksvidda, northern Norway, Boreas, 17, 517–539,
https://doi.org/10.1111/j.1502-3885.1988.tb00566.x, 1988.
Olsen, L., Fredin, O., and Olesen, O.: Quaternary Geology of Norway,
Geological Survey of Norway Special Publication, 13, ISBN 978-82-7385-153-6, 2013.
O'Nions, R. K., Morton, R. D., and Batey, R.: Geological investigations in
the Bamble sector of the Fennoscandian Shield South Norway.: I. The geology
of eastern Bamble, Universitetsforlaget, Oslo, https://hdl.handle.net/11250/2674911 (last access: 15 August 2022), 1970.
Petrone, K. C., Hinzman, L. D., Shibata, H., Jones, J. B., and Boone, R. D.:
The influence of fire and permafrost on sub-arctic stream chemistry during
storms, Hydrol. Process., 21, 423–434, https://doi.org/10.1002/hyp.6247, 2007.
Pierrot, D. E., Wallace, D., and Lewis, E.: CO2SYS: MS Excel Program Developed for
CO2 System Calculations, Carbon Dioxide Information
Analysis Center, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, USA, 2011.
Polsenaere, P. and Abril, G.: Modelling CO2 degassing from small acidic
rivers using water pCO2, DIC and δ13C-DIC data, Geochim.
Cosmochim. Ac., 91, 220–239, https://doi.org/10.1016/j.gca.2012.05.030, 2012.
Porter, C., Morin, P., Howat, I., Noh, M.-J., Bates, B., Peterman, K.,
Keesey, S., Schlenk, M., Gardiner, J., Tomko, K., Willis, M., Kelleher, C.,
Cloutier, M., Husby, E., Foga, S., Nakamura, H., Platson, M., Wethington Jr.,
M., Williamson, C., Bauer, G., Enos, J., Arnold, G., Kramer, W.,
Becker, P., Doshi, A., D'Souza, C., Cummens, P., Laurier, F., and Bojesen,
M.: ArcticDEM, V1, Harvard Dataverse [data set], https://doi.org/10.7910/DVN/OHHUKH, 2018.
Purkamo, L., Ahn, C. M. E. von, Jilbert, T., Muniruzzaman, M., Bange, H. W.,
Jenner, A.-K., Böttcher, M. E., and Virtasalo, J. J.: Impact of
submarine groundwater discharge on biogeochemistry and microbial communities
in pockmarks, Geochim. Cosmochim. Ac., 334, 14–44,
https://doi.org/10.1016/j.gca.2022.06.040, 2022.
QGIS.org: QGIS Geographic Information System, QGIS Association,
http://www.qgis.org (last access: 8 October 2022), 2022.
Rantanen, M., Karpechko, A. Y., Lipponen, A., Nordling, K., Hyvärinen,
O., Ruosteenoja, K., Vihma, T., and Laaksonen, A.: The Arctic has warmed
nearly four times faster than the globe since 1979, Commun. Earth Environ., 3, 168,
https://doi.org/10.1038/s43247-022-00498-3, 2022.
Raymond, P. A. and Hamilton, S. K.: Anthropogenic influences on riverine
fluxes of dissolved inorganic carbon to the oceans, Limnol. Oceanogr. Lett., 3,
143–155, https://doi.org/10.1002/lol2.10069, 2018.
Raymond, P. A., Oh, N.-H., Turner, R. E., and Broussard, W.:
Anthropogenically enhanced fluxes of water and carbon from the Mississippi
River, Nature, 451, 449–452, https://doi.org/10.1038/nature06505, 2008.
Riley, S. J., DeGloria, S. D., and and Elliot, R.: A terrain ruggedness
index that quantifies topographic heterogeneity, Intermountain Journal of
Sciences, 5, 23–27, 1999.
Rouault, E., Warmerdam, F., Schwehr, K., Kiselev, A., Butler, H.,
£oskot, M., Szekeres, T., Tourigny, E., Landa, M., Miara, I.,
Elliston, B., Kumar, C., Plesea, L., Morissette, D., Jolma, A., and Dawson,
N.: GDAL (v3.4.2), Zenodo [code], https://doi.org/10.5281/zenodo.6352176, 2022.
Sandström, B. and Tullborg, E.-L.: Episodic fluid migration in the
Fennoscandian Shield recorded by stable isotopes, rare earth elements and
fluid inclusions in fracture minerals at Forsmark, Sweden, Chem. Geol.,
266, 126–142, https://doi.org/10.1016/j.chemgeo.2009.04.019, 2009.
Schaefer, K. W. and Usdowski, E.: Models for the dissolution of carbonate
rocks and the carbon-13/carbon-12 evolution of carbonate groundwaters,
Zeitschrift fuer Wasser- und Abwasser-Forschung, 20, 69–81, https://eurekamag.com/research/005/910/005910064.php (last access: 15 August 2022), 1987.
Schaefer, K. W. and Usdowski, E.: Application of stable carbon and sulfur
isotope models to the development of ground water in a
limestone-dolomite-anhydrite-gypsum area, in: Progress in Hydrogeochemistry:
Organics – Carbonate Systems – Silicate Systems – Microbiology – Models,
edited by: Mattheß, G., Frimmel, F., Hirsch, P., Schulz, H. D., and Usdowski, E., Springer Berlin Heidelberg, Berlin, Heidelberg, 157–163, ISBN 13 978-3540540342, 1992.
Seibert, J., Grabs, T., Köhler, S., Laudon, H., Winterdahl, M., and Bishop, K.: Linking soil- and stream-water chemistry based on a Riparian Flow-Concentration Integration Model, Hydrol. Earth Syst. Sci., 13, 2287–2297, https://doi.org/10.5194/hess-13-2287-2009, 2009.
Seklima: Observations and weather statistics, Norsk Klimaservicesenter,
https://seklima.met.no/observations/ (last access: 31 August 2022), 2020.
Shadwick, E. H., Thomas, H., Gratton, Y., Leong, D., Moore, S. A.,
Papakyriakou, T., and Prowe, A.: Export of Pacific carbon through the Arctic
Archipelago to the North Atlantic, Cont. Shelf Res., 31, 806–816,
https://doi.org/10.1016/j.csr.2011.01.014, 2011.
Shin, W. J., Chung, G. S., Lee, D., and Lee, K. S.: Dissolved inorganic carbon export from carbonate and silicate catchments estimated from carbonate chemistry and δ13CDIC, Hydrol. Earth Syst. Sci., 15, 2551–2560, https://doi.org/10.5194/hess-15-2551-2011, 2011.
Sollid, J. L., Andersen, S., Hamre, N., Kjeldsen, O., Salvigsen, O.,
Sturød, S., Tveitå, T., and Wilhelmsen, A.: Deglaciation of Finnmark,
North Norway, Norsk Geografisk Tidsskrift – Norwegian Journal of Geography,
27, 233–325, https://doi.org/10.1080/00291951.1973.9728306, 1973.
Stallard, R. F. and Edmond, J. M.: Geochemistry of the Amazon: 3. Weathering
chemistry and limits to dissolved inputs, J. Geophys. Res., 92, 8293,
https://doi.org/10.1029/JC092iC08p08293, 1987.
Stone, L. E., Fang, X., Haynes, K. M., Helbig, M., Pomeroy, J. W.,
Sonnentag, O., and Quinton, W. L.: Modelling the effects of permafrost loss
on discharge from a wetland-dominated, discontinuous permafrost basin,
Hydrol. Process., 33, 2607–2626, https://doi.org/10.1002/hyp.13546, 2019.
Striegl, R. G., Aiken, G. R., Dornblaser, M. M., Raymond, P. A., and
Wickland, K. P.: A decrease in discharge-normalized DOC export by the Yukon
River during summer through autumn, Geophys. Res. Lett., 32, 567,
https://doi.org/10.1029/2005GL024413, 2005.
Stroeven, A. P., Hättestrand, C., Kleman, J., Heyman, J., Fabel, D.,
Fredin, O., Goodfellow, B. W., Harbor, J. M., Jansen, J. D., Olsen, L.,
Caffee, M. W., Fink, D., Lundqvist, J., Rosqvist, G. C., Strömberg, B.,
and Jansson, K. N.: Deglaciation of Fennoscandia, Quaternary Sci.
Rev., 147, 91–121, https://doi.org/10.1016/j.quascirev.2015.09.016, 2016.
Stumm, W. and Morgan, J. J.: Aquatic chemistry an introduction chemical
equilibria in natural water, 2nd ed., A Wiley – Interscience Publication, A
Wiley-Interscience Publication, New York, 780 pp., ISBN 13 978-0471091738, 1981.
Tank, S. E., Frey, K. E., Striegl, R. G., Raymond, P. A., Holmes, R. M.,
McClelland, J. W., and Peterson, B. J.: Landscape-level controls on
dissolved carbon flux from diverse catchments of the circumboreal, Global
Biogeochem. Cy., 26, 323, https://doi.org/10.1029/2012GB004299, 2012.
Tanneberger, F., Tegetmeyer, C., Busse, S., Barthelmes, A., and and 55
others: The peatland map of Europe, Mires Peat, 19, 1–17,
https://doi.org/10.19189/MaP.2016.OMB.264, 2017.
Trolier, M., White, J. W. C., Tans, P. P., Masarie, K. A., and Gemery, P.
A.: Monitoring the isotopic composition of atmospheric CO2: Measurements
from the NOAA Global Air Sampling Network, J. Geophys. Res., 101,
25897–25916, https://doi.org/10.1029/96JD02363, 1996.
Vidon, P.: Towards a better understanding of riparian zone water table
response to precipitation: Surface water infiltration, hillslope
contribution or pressure wave processes?, Hydrol. Process., 26, 3207–3215,
https://doi.org/10.1002/hyp.8258, 2012.
Walker, J. C. G., Hays, P. B., and Kasting, J. F.: A negative feedback
mechanism for the long-term stabilization of Earth's surface temperature, J.
Geophys. Res., 86, 9776, https://doi.org/10.1029/JC086iC10p09776, 1981.
Walvoord, M. A. and Striegl, R. G.: Increased groundwater to stream
discharge from permafrost thawing in the Yukon River basin: Potential
impacts on lateral export of carbon and nitrogen, Geophys. Res. Lett., 34,
L19401, https://doi.org/10.1029/2007GL030216, 2007.
Warner, D. L., Bond-Lamberty, B., Jian, J., Stell, E., and Vargas, R.:
Spatial Predictions and Associated Uncertainty of Annual Soil Respiration at
the Global Scale, Global Biogeochem. Cy., 33, 1733–1745,
https://doi.org/10.1029/2019GB006264, 2019.
Watts, J. D., Natali, S. M., Minions, C., Risk, D., Arndt, K., Zona, D.,
Euskirchen, E. S., Rocha, A. V., Sonnentag, O., Helbig, M., Kalhori, A.,
Oechel, W., Ikawa, H., Ueyama, M., Suzuki, R., Kobayashi, H., Celis, G.,
Schuur, E. A. G., Humphreys, E., Kim, Y., Lee, B.-Y., Goetz, S., Madani, N.,
Schiferl, L. D., Commane, R., Kimball, J. S., Liu, Z., Torn, M. S., Potter,
S., Wang, J. A., Jorgenson, M. T., Xiao, J., Li, X., and Edgar, C.: Soil
respiration strongly offsets carbon uptake in Alaska and Northwest Canada,
Environ. Res. Lett., 16, 84051, https://doi.org/10.1088/1748-9326/ac1222, 2021.
White, A. F., Bullen, T. D., Vivit, D. V., Schulz, M. S., and Clow, D. W.:
The role of disseminated calcite in the chemical weathering of granitoid
rocks, Geochim. Cosmochim. Ac., 63, 1939–1953,
https://doi.org/10.1016/S0016-7037(99)00082-4, 1999.
White, A. F., Schulz, M. S., Lowenstern, J. B., Vivit, D. V., and Bullen, T.
D.: The ubiquitous nature of accessory calcite in granitoid rocks:
Implications for weathering, solute evolution, and petrogenesis, Geochim.
Cosmochim. Ac., 69, 1455–1471, https://doi.org/10.1016/j.gca.2004.09.012, 2005.
Winde, V., Böttcher, M. E., Escher, P., Böning, P., Beck, M.,
Liebezeit, G., and Schneider, B.: Tidal and spatial variations of DI13C and
aquatic chemistry in a temperate tidal basin during winter time, J.
Marine Syst., 129, 396–404, https://doi.org/10.1016/j.jmarsys.2013.08.005, 2014.
Yuanrong, S., Ruihong, Y., Mingyang, T., Xiankun, Y., Lishan, R., Haizhu,
H., Zhuangzhuang, Z., and Xixi, L.: Major ion chemistry in the headwater
region of the Yellow River: Impact of land covers, Environ. Earth Sci., 80,
2637, https://doi.org/10.1007/s12665-021-09692-6, 2021.
Zeebe, R. E. and Westbroek, P.: A simple model for the CaCO 3 saturation
state of the ocean: The “Strangelove,” the “Neritan,” and the “Cretan”
Ocean, Geochem. Geophys. Geosyst., 4, 1104, https://doi.org/10.1029/2003GC000538, 2003.
Zeng, S., Liu, Z., and Kaufmann, G.: Sensitivity of the global carbonate
weathering carbon-sink flux to climate and land-use changes, Nat.
Commun., 10, 5749, https://doi.org/10.1038/s41467-019-13772-4, 2019.
Zeng, S., Kaufmann, G., and Liu, Z.: Natural and Anthropogenic Driving
Forces of Carbonate Weathering and the Related Carbon Sink Flux: A Model
Comparison Study at Global Scale, Global Biogeochem. Cy., 36, e2021GB007096,
https://doi.org/10.1029/2021GB007096, 2022.
Zhang, J., Quay, P. D., and Wilbur, D. O.: Carbon isotope fractionation
during gas-water exchange and dissolution of CO2, Geochim. Cosmochim.
Ac., 59, 107–114, https://doi.org/10.1016/0016-7037(95)91550-D, 1995.
Zolkos, S., Tank, S. E., Striegl, R. G., Kokelj, S. V., Kokoszka, J., Estop-Aragonés, C., and Olefeldt, D.: Thermokarst amplifies fluvial inorganic carbon cycling and export across watershed scales on the Peel Plateau, Canada, Biogeosciences, 17, 5163–5182, https://doi.org/10.5194/bg-17-5163-2020, 2020.
Short summary
Riverine alkalinity in the silicate-dominated headwater catchment at subarctic Iskorasfjellet, northern Norway, was almost entirely derived from weathering of minor carbonate occurrences in the riparian zone. The uphill catchment appeared limited by insufficient contact time of weathering agents and weatherable material. Further, alkalinity increased with decreasing permafrost extent. Thus, with climate change, alkalinity generation is expected to increase in this permafrost-degrading landscape.
Riverine alkalinity in the silicate-dominated headwater catchment at subarctic Iskorasfjellet,...
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