Articles | Volume 18, issue 12
https://doi.org/10.5194/bg-18-3637-2021
© Author(s) 2021. 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-18-3637-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
18 Jun 2021
Research article |
| 18 Jun 2021
| 18 Jun 2021
The impact of the freeze–melt cycle of land-fast ice on the distribution of dissolved organic matter in the Laptev and East Siberian seas (Siberian Arctic)
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine
Research, Bremerhaven, Germany
Bennet Juhls
Department of Earth Sciences, Institute for Space Sciences, Freie Universität Berlin, Berlin, Germany
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine
Research, Potsdam, Germany
Dorothea Bauch
Leibniz Laboratory for Radiometric Dating and Stable Isotope Research,
University of Kiel CAU, Kiel, Germany
GEOMAR, Helmholtz Centre for Ocean Research, Kiel, Germany
Markus Janout
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine
Research, Bremerhaven, Germany
Boris P. Koch
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine
Research, Bremerhaven, Germany
Faculty 1, University of Applied Sciences Bremerhaven, Bremerhaven, Germany
Birgit Heim
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine
Research, Potsdam, Germany
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Thomas Krumpen, Luisa von Albedyll, Helge F. Goessling, Stefan Hendricks, Bennet Juhls, Gunnar Spreen, Sascha Willmes, H. Jakob Belter, Klaus Dethloff, Christian Haas, Lars Kaleschke, Christian Katlein, Xiangshan Tian-Kunze, Robert Ricker, Philip Rostosky, Janna Rückert, Suman Singha, and Julia Sokolova
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Lydia Stolpmann, Caroline Coch, Anne Morgenstern, Julia Boike, Michael Fritz, Ulrike Herzschuh, Kathleen Stoof-Leichsenring, Yury Dvornikov, Birgit Heim, Josefine Lenz, Amy Larsen, Katey Walter Anthony, Benjamin Jones, Karen Frey, and Guido Grosse
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Iuliia Shevtsova, Ulrike Herzschuh, Birgit Heim, Luise Schulte, Simone Stünzi, Luidmila A. Pestryakova, Evgeniy S. Zakharov, and Stefan Kruse
Biogeosciences, 18, 3343–3366, https://doi.org/10.5194/bg-18-3343-2021, https://doi.org/10.5194/bg-18-3343-2021, 2021
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Ingeborg Bussmann, Irina Fedorova, Bennet Juhls, Pier Paul Overduin, and Matthias Winkel
Biogeosciences, 18, 2047–2061, https://doi.org/10.5194/bg-18-2047-2021, https://doi.org/10.5194/bg-18-2047-2021, 2021
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Arctic rivers, lakes, and bays are affected by a warming climate. We measured the amount and consumption of methane in waters from Siberia under ice cover and in open water. In the lake, methane concentrations under ice cover were much higher than in summer, and methane consumption was highest. The ice cover leads to higher methane concentration under ice. In a warmer Arctic, there will be more time with open water when methane is consumed by bacteria, and less methane will escape into the air.
Cited articles
Alling, V., Sanchez-Garcia, L., Porcelli, D., Pugach, S., Vonk, J. E., van
Dongen, B., Morth, C. M., Anderson, L. G., Sokolov, A., Andersson, P.,
Humborg, C., Semiletov, I., and Gustafsson, O.: Nonconservative behavior of
dissolved organic carbon across the Laptev and East Siberian seas, Global
Biogeochem. Cy., 24, Gb4033, https://doi.org/10.1029/2010gb003834, 2010.
Amon, R. M. W.: The role of dissolved organic matter for the organic carbon
cycle in the Arctic Ocean, in: The organic carbon cycle in the Arctic Ocean,
edited by: Stein, R. and MacDonald, R. W., Springer Verlag, Berlin, 83–99,
2004.
Amon, R. M. W. and Meon, B.: The biogeochemistry of dissolved organic
matter and nutrients in two large Arctic estuaries and potential
implications for our understanding of the Arctic Ocean system, Mar. Chem., 92,
311–330, https://doi.org/10.1016/j.marchem.2004.06.034, 2004.
Amon, R. M. W., Rinehart, A. J., Duan, S., Louchouarn, P., Prokushkin, A.,
Guggenberger, G., Bauch, D., Stedmon, C., Raymond, P. A., Holmes, R. M.,
McClelland, J. W., Peterson, B. J., Walker, S. A., and Zhulidov, A. V.:
Dissolved organic matter sources in large Arctic rivers, Geochim. Cosmochim.
Ac., 94, 217–237, https://doi.org/10.1016/j.gca.2012.07.015, 2012.
Anderson, L. G. and Amon, R. M. W.: DOM in the Arctic Ocean, chap. 14,
in: Biogeochemistry of Marine Dissolved Organic Matter (2nd Edn.),
edited by: Hansell, D. A. and Carlson, C. A., Academic Press, Boston,
609–633, 2015.
Anderson, L. G. and Macdonald, R. W.: Observing the Arctic Ocean carbon
cycle in a changing environment, Polar Res., 34, 26891,
https://doi.org/10.3402/polar.v34.26891, 2015.
Anderson, L. G., Bjork, G., Jutterstrom, S., Pipko, I., Shakhova, N.,
Semiletov, I., and Wahlstrom, I.: East Siberian Sea, an Arctic region of
very high biogeochemical activity, Biogeosciences, 8, 1745–1754,
https://doi.org/10.5194/bg-8-1745-2011, 2011.
Anderson, L. G., Bjork, G., Holby, O., Jutterstrom, S., Morth, C. M.,
O'Regan, M., Pearce, C., Semiletov, I., Stranne, C., Stoven, T., Tanhua, T.,
Ulfsbo, A., and Jakobsson, M.: Shelf-Basin interaction along the East
Siberian Sea, Ocean Sci., 13, 349–363,
https://doi.org/10.5194/os-13-349-2017, 2017.
Bareiss, J. and Görgen, K.: Spatial and temporal variability of sea ice
in the Laptev Sea: Analyses and review of satellite passive-microwave data
and model results, 1979 to 2002, Global Planet. Change, 48, 28–54,
https://doi.org/10.1016/j.gloplacha.2004.12.004, 2005.
Bauch, D. and Thibodeau, B.: Stable oxygen isotope analysis of water samples
during helicopter/ice camp TRANSDRIFT-XX, Laptev Sea, PANGAEA [Dataset],
https://doi.org/10.1594/PANGAEA.924538, 2020.
Bauch, D., Erlenkeuser, H., and Andersen, N.: Water mass processes on Arctic
shelves as revealed from delta O-18 of H2O, Global Planet. Change, 48,
165–174, https://doi.org/10.1016/j.gloplacha.2004.12.011, 2005.
Bauch, D., Dmitrenko, I. A., Wegner, C., Hölemann, J., Kirillov, S. A.,
Timokhov, L. A., and Kassens, H.: Exchange of Laptev Sea and Arctic Ocean
halocline waters in response to atmospheric forcing, J. Geophys. Res.-Ocean.,
114, C05008, https://doi.org/10.1029/2008jc005062, 2009a.
Bauch, D., Dmitrenko, I., Kirillov, S., Wegner, C., Hölemann, J.,
Pivovarov, S., Timokhov, L., and Kassens, H.: Eurasian Arctic shelf
hydrography: Exchange and residence time of southern Laptev Sea waters, Cont.
Shelf Res., 29, 1815, https://doi.org/10.1016/j.csr.2009.06.009, 2009b.
Bauch, D., Hölemann, J., Willmes, S., Groger, M., Novikhin, A.,
Nikulina, A., Kassens, H., and Timokhov, L.: Changes in distribution of
brine waters on the Laptev Sea shelf in 2007, J. Geophys. Res.-Ocean., 115,
C11008, https://doi.org/10.1029/2010jc006249, 2010.
Bauch, D., van der Loeff, M. R., Andersen, N., Torres-Valdes, S., Bakker,
K., and Abrahamsen, E. P.: Origin of freshwater and polynya water in the
Arctic Ocean halocline in summer 2007, Prog. Oceanogr., 91, 482–495,
https://doi.org/10.1016/j.pocean.2011.07.017, 2011.
Bauch, D., Hölemann, J. A., Dmitrenko, I. A., Janout, M. A., Nikulina,
A., Kirillov, S. A., Krumpen, T., Kassens, H., and Timokhov, L.: Impact of
Siberian coastal polynyas on shelf-derived Arctic Ocean halocline waters, J.
Geophys. Res.-Ocean., 117, C00g12, https://doi.org/10.1029/2011jc007282,
2012.
Bauch, D., Hölemann, J. A., Nikulina, A., Wegner, C., Janout, M. A.,
Timokhov, L. A., and Kassens, H.: Correlation of river water and local
sea-ice melting on the Laptev Sea shelf (Siberian Arctic), J. Geophys.
Res.-Ocean., 118, 550–561, https://doi.org/10.1002/jgrc.20076, 2013.
Bauch, D., Cherniavskaia, E., Novikhin, A., and Kassens, H.: Physical oceanography, nutrients, and δ18O measured on water bottle samples in the Laptev Sea, PANGAEA [Dataset], https://doi.org/10.1594/PANGAEA.885448, 2018.
Bélanger, S., Xie, H. X., Krotkov, N., Larouche, P., Vincent, W. F., and
Babin, M.: Photomineralization of terrigenous dissolved organic matter in
Arctic coastal waters from 1979 to 2003: Interannual variability and
implications of climate change, Global Biogeochem. Cy., 20, Gb4005,
https://doi.org/10.1029/2006gb002708, 2006.
Biskaborn, B. K., Smith, S. L., Noetzli, J., Matthes, H., Vieira, G.,
Streletskiy, D. A., Schoeneich, P., Romanovsky, V. E., Lewkowicz, A. G.,
Abramov, A., Allard, M., Boike, J., Cable, W. L., Christiansen, H. H.,
Delaloye, R., Diekmann, B., Drozdov, D., Etzelmuller, B., Grosse, G.,
Guglielmin, M., Ingeman-Nielsen, T., Isaksen, K., Ishikawa, M., Johansson,
M., Johannsson, H., Joo, A., Kaverin, D., Kholodov, A., Konstantinov, P.,
Kroger, T., Lambiel, C., Lanckman, J. P., Luo, D. L., Malkova, G.,
Meiklejohn, I., Moskalenko, N., Oliva, M., Phillips, M., Ramos, M., Sannel,
A. B. K., Sergeev, D., Seybold, C., Skryabin, P., Vasiliev, A., Wu, Q. B.,
Yoshikawa, K., Zheleznyak, M., and Lantuit, H.: Permafrost is warming at a
global scale, Nat. Commun., 10, 264, https://doi.org/:10.1038/s41467-018-08240-4, 2019.
Cauwet, G. and Sidorov, I.: The biogeochemistry of Lena River: Organic
carbon and nutrients distribution, Mar. Chem., 53, 211–227,
https://doi.org/10.1016/0304-4203(95)00090-9, 1996.
Charette, M. A., Kipp, L. E., Jensen, L. T., Dabrowski, J. S., Whitmore, L.
M., Fitzsimmons, J. N., Williford, T., Ulfsbo, A., Jones, E., Bundy, R. M.,
Vivancos, S. M., Pahnke, K., John, S. G., Xiang, Y., Hatta, M., Petrova, M.
V., Heimbürger-Boavida, L.-E., Bauch, D., Newton, R., Pasqualini, A.,
Agather, A. M., Amon, R. M. W., Anderson, R. F., Andersson, P. S., Benner,
R., Bowman, K. L., Edwards, R. L., Gdaniec, S., Gerringa, L. J. A.,
González, A. G., Granskog, M., Haley, B., Hammerschmidt, C. R., Hansell,
D. A., Henderson, P. B., Kadko, D. C., Kaiser, K., Laan, P., Lam, P. J.,
Lamborg, C. H., Levier, M., Li, X., Margolin, A. R., Measures, C., Middag,
R., Millero, F. J., Moore, W. S., Paffrath, R., Planquette, H., Rabe, B.,
Reader, H., Rember, R., Rijkenberg, M. J. A., Roy-Barman, M., Rutgers van
der Loeff, M., Saito, M., Schauer, U., Schlosser, P., Sherrell, R. M.,
Shiller, A. M., Slagter, H., Sonke, J. E., Stedmon, C., Woosley, R. J.,
Valk, O., van Ooijen, J., and Zhang, R.: The Transpolar Drift as a Source of
Riverine and Shelf-Derived Trace Elements to the Central Arctic Ocean,
J. Geophys. Res.-Ocean., 125, 1–34, https://doi.org/10.1029/2019jc015920, 2020.
Coble, P. G.: Marine optical biogeochemistry: The chemistry of ocean color,
Chem. Rev., 107, 402–418, https://doi.org/10.1021/cr050350+, 2007.
Cooper, L. W., Benner, R., McClelland, J. W., Peterson, B. J., Holmes, R.
M., Raymond, P. A., Hansell, D. A., Grebmeier, J. M., and Codispoti, L. A.:
Linkages among runoff, dissolved organic carbon, and the stable oxygen
isotope composition of seawater and other water mass indicators in the
Arctic Ocean, J. Geophys. Res.-Biogeo., 110, G02013,
https://doi.org/10.1029/2005jg000031, 2005.
Craig, H.: Standard for Reporting Concentrations of Deuterium and Oxygen-18
in Natural Waters, Science, 133, 1833–1834,
https://doi.org/10.1126/science.133.3467.1833, 1961.
Danhiez, F. P., Vantrepotte, V., Cauvin, A., Lebourg, E., and Loisel, H.:
Optical properties of chromophoric dissolved organic matter during a
phytoplankton bloom. Implication for DOC estimates from CDOM absorption,
Limnol. Oceanogr., 62, 1409–1425, https://doi.org/10.1002/lno.10507, 2017.
Dittmar, T. and Kattner, G.: The biogeochemistry of the river and shelf
ecosystem of the Arctic Ocean: a review, Mar. Chem., 83, 103–120,
https://doi.org/10.1016/S0304-4203(03)00105-1, 2003.
Eicken, H., Dmitrenko, I., Tyshko, K., Darovskikh, A., Dierking, W., Blahak,
U., Groves, J., and Kassens, H.: Zonation of the Laptev Sea landfast ice
cover and its importance in a frozen estuary, Global Planet. Change, 48,
55–83, https://doi.org/10.1016/j.gloplacha.2004.12.005, 2005.
Eulenburg, A., Juhls, B., and Hölemann, J. A.: Surface water dissolved
organic matter (DOC, CDOM) in the Lena River, PANGAEA [Dataset],
https://doi.org/10.1594/PANGAEA.898711, 2019.
Fichot, C. G. and Benner, R.: The spectral slope coefficient of
chromophoric dissolved organic matter (S275–295) as a tracer of terrigenous
dissolved organic carbon in river-influenced ocean margins, Limnol. Oceanogr.,
57, 1453–1466, https://doi.org/10.4319/lo.2012.57.5.1453, 2012.
Frey, K. E. and Smith, L. C.: Amplified carbon release from vast West
Siberian peatlands by 2100, Geophys. Res. Lett., 32, L09401,
https://doi.org/10.1029/2004gl022025, 2005.
Giannelli, V., Thomas, D. N., Haas, C., Kattner, G., Kennedy, H., and
Dieckmann, G. S.: Behaviour of dissolved organic matter and inorganic
nutrients during experimental sea-ice formation, Ann. Glaciol., 33, 317–321,
https://doi.org/10.3189/172756401781818572, 2001.
Gnanadesikan, A., Kim, G. E., and Pradal, M. A. S.: Impact of Colored
Dissolved Materials on the Annual Cycle of Sea Surface Temperature:
Potential Implications for Extreme Ocean Temperatures, Geophys. Res. Lett., 46,
861–869, https://doi.org/10.1029/2018gl080695, 2019.
Gonçalves-Araújo, R., Stedmon, C. A., Heim, B., Dubinenkov, I., Kraberg, A.,
Moiseev, D., and Bracher, A.: From Fresh to Marine Waters: Characterization
and Fate of Dissolved Organic Matter in the Lena River Delta Region,
Siberia, Front. Mar. Sci., 2, 108,
https://doi.org/10.3389/fmars.2015.00108, 2015.
Granskog, M. A.: Changes in spectral slopes of colored dissolved organic
matter absorption with mixing and removal in a terrestrially dominated
marine system (Hudson Bay, Canada), Mar. Chem., 134/135, 10–17,
https://doi.org/10.1016/j.marchem.2012.02.008, 2012.
Granskog, M. A., Macdonald, R. W., Kuzyk, Z. Z. A., Senneville, S., Mundy,
C.-J., Barber, D. G., Stern, G. A., and Saucier, F.: Coastal conduit in
southwestern Hudson Bay (Canada) in summer: Rapid transit of freshwater and
significant loss of colored dissolved organic matter, J. Geophys.
Res.-Ocean., 114, C08012, https://doi.org/10.1029/2009JC005270, 2009.
Granskog, M. A., Stedmon, C. A., Dodd, P. A., Amon, R. M. W., Pavlov, A. K.,
de Steur, L., and Hansen, E.: Characteristics of colored dissolved organic
matter (CDOM) in the Arctic outflow in the Fram Strait: Assessing the
changes and fate of terrigenous CDOM in the Arctic Ocean, J. Geophys.
Res.-Ocean., 117, C12021, https://doi.org/10.1029/2012jc008075, 2012.
Granskog, M. A., Nomura, D., Muller, S., Krell, A., Toyota, T., and Hattori,
H.: Evidence for significant protein-like dissolved organic matter
accumulation in Sea of Okhotsk sea ice, Ann. Glaciol., 56, 1–8,
10.3189/2015AoG69A002, 2015a.
Granskog, M. A., Pavlov, A. K., Sagan, S., Kowalczuk, P., Raczkowska, A.,
and Stedmon, C. A.: Effect of sea-ice melt on inherent optical properties
and vertical distribution of solar radiant heating in Arctic surface waters,
J. Geophys. Res.-Ocean., 120, 7028–7039, https://doi.org/10.1002/2015jc011087,
2015b.
Gueguen, C., Guo, L. D., and Tanaka, N.: Distributions and characteristics
of colored dissolved organic matter in the Western Arctic Ocean, Cont. Shelf
Res., 25, 1195–1207, https://doi.org/10.1016/j.csr.2005.01.005, 2005.
Guo, L. D., Ping, C. L., and Macdonald, R. W.: Mobilization pathways of
organic carbon from permafrost to arctic rivers in a changing climate,
Geophys. Res. Lett., 34, L13603, https://doi.org/10.1029/2007gl030689,
2007.
Haine, T. W. N., Curry, B., Gerdes, R., Hansen, E., Karcher, M., Lee, C.,
Rudels, B., Spreen, G., de Steur, L., Stewart, K. D., and Woodgate, R.:
Arctic freshwater export: Status, mechanisms, and prospects, Global Planet. Change, 125, 13–35, https://doi.org/10.1016/j.gloplacha.2014.11.013, 2015.
Heim, B., Abramova, E., Doerffer, R., Gunther, F., Hölemann, J.,
Kraberg, A., Lantuit, H., Loginova, A., Martynov, F., Overduin, P. P., and
Wegner, C.: Ocean colour remote sensing in the southern Laptev Sea:
evaluation and applications, Biogeosciences, 11, 4191–4210,
https://doi.org/10.5194/bg-11-4191-2014, 2014.
Helms, J. R., Stubbins, A., Ritchie, J. D., Minor, E. C., Kieber, D. J., and
Mopper, K.: Absorption spectral slopes and slope ratios as indicators of
molecular weight, source, and photobleaching of chromophoric dissolved
organic matter, Limnol. Oceanogr., 53, 955–969,
https://doi.org/10.4319/lo.2008.53.3.0955, 2008.
Hill, V. J.: Impacts of chromophoric dissolved organic material on surface
ocean heating in the Chukchi Sea, J. Geophys. Res.-Ocean., 113, C07024,
https://doi.org/10.1029/2007jc004119, 2008.
Hölemann, J. A., Schirmacher, M., and Prange, A.: Seasonal variability
of trace metals in the Lena River and the southeastern Laptev Sea: Impact of
the spring freshet, Global Planet. Change, 48, 112–125,
https://doi.org/10.1016/j.gloplacha.2004.12.008, 2005.
Hölemann, J. A., Juhls, B., and Timokhov, L. A.: Colored dissolved organic
matter (CDOM) measured during cruise TRANSDRIFT-XVII, Laptev Sea, PANGAEA [Dataset],
https://doi.org/10.1594/PANGAEA.924206, 2020a.
Hölemann, J., Koch, B. P., Juhls, B., and Timokhov, L. A.: Colored dissolved
organic matter (CDOM) and dissolved organic carbon (DOC) measured during
cruise TRANSDRIFT-XIX, Laptev Sea, PANGAEA [Dataset],
https://doi.org/10.1594/PANGAEA.924209, 2020b.
Hölemann, J. A., Koch, B. P., Juhls, B., and Timokhov, L. A.: Colored
dissolved organic matter (CDOM) and dissolved organic carbon (DOC) measured
during helicopter/ice camp TRANSDRIFT-XX, Laptev Sea, PANGAEA [Dataset],
https://doi.org/10.1594/PANGAEA.924228, 2020c.
Hölemann, J. A., Juhls, B., and Timokhov, L. A.: Colored dissolved organic
matter (CDOM) measured during cruise TRANSDRIFT-XXI, Laptev Sea, PANGAEA [Dataset],
https://doi.org/10.1594/PANGAEA.924203, 2020d.
Hölemann, J., Koch, B. P., Juhls, B., and Timokhov, L. A.: Colored dissolved
organic matter (CDOM) and dissolved organic carbon (DOC) measured during
cruise TRANSDRIFT-XXII, Laptev Sea, PANGAEA [Dataset],
https://doi.org/10.1594/PANGAEA.924202, 2020e.
Hölemann, J. A., Koch, B. P., Juhls, B., and Ivanov, V.: Colored dissolved
organic matter (CDOM) and dissolved organic carbon (DOC) measured during
cruise TRANSDRIFT-XXIV, Laptev Sea, PANGAEA [Dataset],
https://doi.org/10.1594/PANGAEA.924210, 2020f.
Hölemann, J. A., Chetverova, A., Juhls, B., and Kusse-Tiuz, N.: Colored
dissolved organic matter (CDOM) and dissolved organic carbon (DOC) measured
during cruise TRANSARKTIKA-2019 Leg4, Laptev Sea and East Siberian Sea,
PANGAEA [Dataset], https://doi.org/10.1594/PANGAEA.924211, 2020g.
Holmes, R. M., McClelland, J. W., Peterson, B. J., Tank, S. E., Bulygina,
E., Eglinton, T. I., Gordeev, V. V., Gurtovaya, T. Y., Raymond, P. A.,
Repeta, D. J., Staples, R., Striegl, R. G., Zhulidov, A. V., and Zimov, S.
A.: Seasonal and Annual Fluxes of Nutrients and Organic Matter from Large
Rivers to the Arctic Ocean and Surrounding Seas, Estuar. Coast., 35, 369–382,
https://doi.org/10.1007/s12237-011-9386-6, 2012.
Hugelius, G., Strauss, J., Zubrzycki, S., Harden, J. W., Schuur, E. A. G.,
Ping, C. L., Schirrmeister, L., Grosse, G., Michaelson, G. J., Koven, C. D.,
O'Donnell, J. A., Elberling, B., Mishra, U., Camill, P., Yu, Z., Palmtag,
J., and Kuhry, P.: Estimated stocks of circumpolar permafrost carbon with
quantified uncertainty ranges and identified data gaps, Biogeosciences, 11,
6573–6593, https://doi.org/10.5194/bg-11-6573-2014, 2014.
Itkin, P. and Krumpen, T.: Winter sea ice export from the Laptev Sea
preconditions the local summer sea ice cover and fast ice decay, The Cryosphere,
11, 2383–2391, https://doi.org/10.5194/tc-11-2383-2017, 2017.
Jakobsson, M., Mayer, L., Coakley, B., Dowdeswell, J. A., Forbes, S.,
Fridman, B., Hodnesdal, H., Noormets, R., Pedersen, R., Rebesco, M.,
Schenke, H. W., Zarayskaya, Y., Accettella, D., Armstrong, A., Anderson, R.
M., Bienhoff, P., Camerlenghi, A., Church, I., Edwards, M., Gardner, J. V.,
Hall, J. K., Hell, B., Hestvik, O., Kristoffersen, Y., Marcussen, C.,
Mohammad, R., Mosher, D., Nghiem, S. V., Pedrosa, M. T., Travaglini, P. G.,
and Weatherall, P.: The International Bathymetric Chart of the Arctic Ocean
(IBCAO) Version 3.0, Geophys. Res. Lett., 39, L12609,
https://doi.org/10.1029/2012GL052219, 2012.
Janout, M. A., Hölemann, J., and Krumpen, T.: Cross-shelf transport of
warm and saline water in response to sea ice drift on the Laptev Sea shelf,
J. Geophys. Res.-Ocean., 118, 563–576, https://doi.org/10.1029/2011jc007731,
2013.
Janout, M. A., Aksenov, Y., Hölemann, J. A., Rabe, B., Schauer, U.,
Polyakov, I. V., Bacon, S., Coward, A. C., Karcher, M., Lenn, Y. D.,
Kassens, H., and Timokhov, L.: Kara Sea freshwater transport through
Vilkitsky Strait: Variability, forcing, and further pathways toward the
western Arctic Ocean from a model and observations, J. Geophys. Res.-Ocean.,
120, 4925–4944, https://doi.org/10.1002/2014jc010635, 2015.
Janout, M. A., Hölemann, J., Waite, A. M., Krumpen, T., von Appen, W.
J., and Martynov, F.: Sea-ice retreat controls timing of summer plankton
blooms in the Eastern Arctic Ocean, Geophys. Res. Lett., 43, 12493–12501,
https://doi.org/10.1002/2016gl071232, 2016a.
Janout, M. A., Holemann, J., Juhls, B., Krumpen, T., Rabe, B., Bauch, D.,
Wegner, C., Kassens, H., and Timokhov, L.: Episodic warming of near-bottom
waters under the Arctic sea ice on the central Laptev Sea shelf, Geophys. Res.
Lett., 43, 264–272, https://doi.org/10.1002/2015gl066565, 2016b.
Janout, M. A., Hölemann, J., Timokhov, L., Gutjahr, O., and Heinemann,
G.: Circulation in the northwest Laptev Sea in the eastern Arctic Ocean:
Crossroads between Siberian River water, Atlantic water and polynya-formed
dense water, J. Geophys. Res.-Ocean., 122, 6630–6647,
https://doi.org/10.1002/2017jc013159, 2017.
Janout, M.A., Hölemann, J., Smirnov, A., Krumpen, T., Bauch, D.,
Laukert, G., and Timokhov, L.: On the variability of stratification in the
freshwater influenced Laptev Sea region, Front Mar. Sci., 7, 543489,
https://doi.org/10.3389/fmars.2020.543489, 2020.
Jørgensen, L., Stedmon, C. A., Kaartokallio, H., Middelboe, M., and
Thomas, D. N.: Changes in the composition and bioavailability of dissolved
organic matter during sea ice formation, Limnol. Oceanogr., 60, 817–830,
https://doi.org/10.1002/lno.10058, 2015.
Juhls, B., Overduin, P. P., Hölemann, J., Hieronymi, M., Matsuoka, A.,
Heim, B., and Fischer, J.: Dissolved organic matter at the fluvial-marine
transition in the Laptev Sea using in situ data and ocean colour remote
sensing, Biogeosciences, 16, 2693–2713,
https://doi.org/10.5194/bg-16-2693-2019, 2019.
Juhls, B., Stedmon, C. A., Morgenstern, A., Meyer, H., Hölemann, J.,
Heim, B., Povazhnyi, V., and Overduin, P. P.: Identifying Drivers of
Seasonality in Lena River Biogeochemistry and Dissolved Organic Matter
Fluxes, Front. Environ. Sci., 8, 1–15,
https://doi.org/10.3389/fenvs.2020.00053, 2020.
Kaiser, K., Benner, R., and Amon, R. M. W.: The fate of terrigenous
dissolved organic carbon on the Eurasian shelves and export to the North
Atlantic, J. Geophys. Res.-Ocean., 122, 4–22,
https://doi.org/10.1002/2016jc012380, 2017a.
Kaiser, K., Canedo-Oropeza, M., McMahon, R., and Amon, R. M. W.: Origins and
transformations of dissolved organic matter in large Arctic rivers, Sci.
Rep.-UK, 7, 13064, https://doi.org/10.1038/s41598-017-12729-1, 2017b.
Kattner, G., Juhls, B., and Heim, B.: Surface water dissolved organic matter
(DOC, CDOM) in the Lena River, PANGAEA [Dataset],
https://doi.org/10.1594/PANGAEA.898705, 2010.
Kattner, G., Lobbes, J. M., Fitznar, H. P., Engbrodt, R., Nothig, E. M., and
Lara, R. J.: Tracing dissolved organic substances and nutrients from the
Lena River through Laptev Sea (Arctic), Mar. Chem., 65, 25–39,
https://doi.org/10.1016/S0304-4203(99)00008-0, 1999.
Köhler, H., Meon, B., Gordeev, V. V., Spitzy, A., and Amon, R. M. W.:
Dissolved organic matter (DOM) in the estuaries of Ob and Yenisei and the
adjacent Kara Sea, Russia, in: Siberian river run-off in the Kara Sea,
edited by: Stein, R., Fahl, K., Fütterer, D. K., Galimov, E. M., and
Stepanets, O. V.: Proceedings in Marine Science, 6, Elsevier Science B. V.,
Amsterdam, 281–308, 2003.
Kotchetov, S. V., Kulakov, I. Y., Kurajov, V. K., Timokhov, L. A., and
Vanda, Y. A.: Hydrometeorological regime of the Laptev Sea, Federal Service
of Russia for Hydrometeorology and Monitoring of the Environment, Arct.
Antarct. Res. Inst., St. Petersburg, Russia, 85, 1–34, 1994.
Kowalczuk, P., Meler, J., Kauko, H. M., Pavlov, A. K., Zablocka, M., Peeken,
I., Dybwad, C., Castellani, G., and Granskog, M. A.: Bio-optical properties
of Arctic drift ice and surface waters north of Svalbard from winter to
spring, J. Geophys. Res.-Ocean., 122, 4634–4660,
https://doi.org/10.1002/2016jc012589, 2017.
Krumpen, T., Hölemann, J. A., Willmes, S., Maqueda, M. A. M., Busche,
T., Dmitrenko, I. A., Gerdes, R., Haas, C., Heinemann, G., Hendricks, S.,
Kassens, H., Rabenstein, L., and Schroder, D.: Sea ice production and water
mass modification in the eastern Laptev Sea, J. Geophys. Res.-Ocean., 116,
C05014, https://doi.org/10.1029/2010jc006545, 2011.
Kwok, R. and Morison, J.: Dynamic topography of the ice-covered Arctic
Ocean from ICESat, Geophys. Res. Lett., 38, L02501,
https://doi.org/10.1029/2010gl046063, 2011.
Lara, R. J., Rachold, V., Kattner, G., Hubberten, H. W., Guggenberger, G.,
Skoog, A., and Thomas, D. N.: Dissolved organic matter and nutrients in the
Lena River, Siberian Arctic: Characteristics and distribution, Mar. Chem., 59,
301–309, https://doi.org/10.1016/S0304-4203(97)00076-5, 1998.
Letscher, R. T., Hansell, D. A., and Kadko, D.: Rapid removal of terrigenous
dissolved organic carbon over the Eurasian shelves of the Arctic Ocean, Mar.
Chem., 123, 78–87, https://doi.org/10.1016/j.marchem.2010.10.002, 2011.
Li, Z., Zhao, J., Su, J., Li, C., Cheng, B., Hui, F., Yang, Q., and Shi, L.:
Spatial and Temporal Variations in the Extent and Thickness of Arctic
Landfast Ice, Remote Sens-Basel, 12, 1–20, https://doi.org/10.3390/rs12010064,
2020.
Logvinova, C. L., Frey, K. E., and Cooper, L. W.: The potential role of sea
ice melt in the distribution of chromophoric dissolved organic matter in the
Chukchi and Beaufort Seas, Deep-Sea Res. Pt. II, 130, 28–42,
https://doi.org/10.1016/j.dsr2.2016.04.017, 2016.
Macdonald, R. W., Paton, D. W., Carmack, E. C., and Omstedt, A.: The
Fresh-Water Budget and under-Ice Spreading of Mackenzie River Water in the
Canadian Beaufort Sea Based on Salinity and O-18
Manizza, M., Follows, M. J., Dutkiewicz, S., McClelland, J. W., Menemenlis,
D., Hill, C. N., Townsend-Small, A., and Peterson, B. J.: Modeling transport
and fate of riverine dissolved organic carbon in the Arctic Ocean, Global
Biogeochem. Cy., 23, Gb4006, https://doi.org/10.1029/2008gb003396, 2009.
Mann, P. J., Davydova, A., Zimov, N., Spencer, R. G. M., Davydov, S.,
Bulygina, E., Zimov, S., and Holmes, R. M.: Controls on the composition and
lability of dissolved organic matter in Siberia's Kolyma River basin, J.
Geophys. Res.-Biogeo., 117, G01028, https://doi.org/10.1029/2011jg001798,
2012.
Mann, P. J., Spencer, R. G. M., Hernes, P. J., Six, J., Aiken, G. R., Tank,
S. E., McClelland, J. W., Butler, K. D., Dyda, R. Y., and Holmes, R. M.:
Pan-Arctic Trends in Terrestrial Dissolved Organic Matter from Optical
Measurements, Front Earth Sc-Switz, 4, 1–18,
https://doi.org/10.3389/feart.2016.00025, 2016.
Mathis, J. T., Hansell, D. A., and Bates, N. R.: Strong hydrographic
controls on spatial and seasonal variability of dissolved organic carbon in
the Chukchi Sea, Deep-Sea Res. Pt. II, 52, 3245–3258,
https://doi.org/10.1016/j.dsr2.2005.10.002, 2005.
Matsuoka, A., Bricaud, A., Benner, R., Para, J., Sempere, R., Prieur, L.,
Belanger, S., and Babin, M.: Tracing the transport of colored dissolved
organic matter in water masses of the Southern Beaufort Sea: relationship
with hydrographic characteristics, Biogeosciences, 9, 925–940,
https://doi.org/10.5194/bg-9-925-2012, 2012.
Matsuoka, A., Boss, E., Babin, M., Karp-Boss, L., Hafez, M., Chekalyuk, A.,
Proctor, C. W., Werdell, P. J., and Bricaud, A.: Pan-Arctic optical
characteristics of colored dissolved organic matter: Tracing dissolved
organic carbon in changing Arctic waters using satellite ocean color data,
Remote Sens. Environ., 200, 89–101, https://doi.org/10.1016/j.rse.2017.08.009,
2017.
McClelland, J. W., Holmes, R. M., Peterson, B. J., and Stieglitz, M.:
Increasing river discharge in the Eurasian Arctic: Consideration of dams,
permafrost thaw, and fires as potential agents of change, J. Geophys.
Res.-Atmos., 109, D18102, https://doi.org/10.1029/2004jd004583, 2004.
Morison, J., Kwok, R., Peralta-Ferriz, C., Alkire, M., Rigor, I., Andersen,
R., and Steele, M.: Changing Arctic Ocean freshwater pathways, Nature, 481,
66–70, https://doi.org/10.1038/nature10705, 2012.
Müller, S., Vahatalo, A. V., Stedmon, C. A., Granskog, M. A., Norman,
L., Aslam, S. N., Underwood, G. J. C., Dieckmann, G. S., and Thomas, D. N.:
Selective incorporation of dissolved organic matter (DOM) during sea ice
formation, Mar. Chem., 155, 148–157,
https://doi.org/10.1016/j.marchem.2013.06.008, 2013.
Opsahl, S., Benner, R., and Amon, R. M. W.: Major flux of terrigenous
dissolved organic matter through the Arctic Ocean, Limnol. Oceanogr., 44,
2017–2023, https://doi.org/10.4319/lo.1999.44.8.2017, 1999.
Osburn, C. L., Retamal, L., and Vincent, W. F.: Photoreactivity of
chromophoric dissolved organic matter transported by the Mackenzie River to
the Beaufort Sea, Mar. Chem., 115, 10–20,
https://doi.org/10.1016/j.marchem.2009.05.003, 2009.
Overland, J. E., Wang, M. Y., and Box, J. E.: An integrated index of recent
pan-Arctic climate change, Environ. Res. Lett., 14, 035006,
https://doi.org/10.1088/1748-9326/aaf665, 2019.
Pavlov, A. K., Stedmon, C. A., Semushin, A. V., Martma, T., Ivanov, B. V.,
Kowalczuk, P., and Granskog, M. A.: Linkages between the circulation and
distribution of dissolved organic matter in the White Sea, Arctic Ocean,
Cont. Shelf Res., 119, 1–13, https://doi.org/10.1016/j.csr.2016.03.004, 2016.
Pegau, W. S.: Inherent optical properties of the central Arctic surface
waters, J. Geophys. Res.-Ocean., 107, 8035
https://doi.org/10.1029/2000jc000382, 2002.
Petrich, C. and Eicken, H.: Growth, Structure and Properties of Sea Ice,
in: Sea Ice, 2nd Edn., edited by: Thomas, D. N. and Dieckmann, G.
S., Wiley-Blackwell, Oxford, UK, 23–77, 2010.
Plaza, C., Pegoraro, E., Bracho, R., Celis, G., Crummer, K. G., Hutchings,
J. A., Pries, C. E. H., Mauritz, M., Natali, S. M., Salmon, V. G., Schadel,
C., Webb, E. E., and Schuur, E. A. G.: Direct observation of permafrost
degradation and rapid soil carbon loss in tundra, Nat. Geosci., 12, 627–631,
https://doi.org/10.1038/s41561-019-0387-6, 2019.
Prokushkin, A. S., Pokrovsky, O. S., Shirokova, L. S., Korets, M. A., Viers,
J., Prokushkin, S. G., Amon, R. M. W., Guggenberger, G., and McDowell, W.
H.: Sources and the flux pattern of dissolved carbon in rivers of the
Yenisey basin draining the Central Siberian Plateau, Environ. Res. Lett., 6,
045212, https://doi.org/10.1088/1748-9326/6/4/045212, 2011.
Pugach, S. P. and Pipko, I. I.: Dynamics of colored dissolved matter on the
East Siberian sea shelf, Dokl. Earth Sci., 448, 153–156,
https://doi.org/10.1134/S1028334x12120173, 2013.
Pugach, S. P., Pipko, I. I., Shakhova, N. E., Shirshin, E. A., Perminova, I.
V., Gustafsson, O., Bondur, V. G., Ruban, A. S., and Semiletov, I. P.:
Dissolved organic matter and its optical characteristics in the Laptev and
East Siberian seas: spatial distribution and interannual variability
(2003–2011), Ocean Sci., 14, 87–103, https://doi.org/10.5194/os-14-87-2018,
2018.
Retelletti-Brogi, S., Ha, S.-Y., Kim, K., Derrien, M., Lee, Y. K., and Hur,
J.: Optical and molecular characterization of dissolved organic matter (DOM)
in the Arctic ice core and the underlying seawater (Cambridge Bay, Canada):
Implication for increased autochthonous DOM during ice melting, Sci. Total
Environ., 627, 802–811, https://doi.org/10.1016/j.scitotenv.2018.01.251,
2018.
Rawlins, M. A., Steele, M., Holland, M. M., Adam, J. C., Cherry, J. E.,
Francis, J. A., Groisman, P. Y., Hinzman, L. D., Huntington, T. G., Kane, D.
L., Kimball, J. S., Kwok, R., Lammers, R. B., Lee, C. M., Lettenmaier, D.
P., McDonald, K. C., Podest, E., Pundsack, J. W., Rudels, B., Serreze, M.
C., Shiklomanov, A., Skagseth, O., Troy, T. J., Vorosmarty, C. J.,
Wensnahan, M., Wood, E. F., Woodgate, R., Yang, D. Q., Zhang, K., and Zhang,
T. J.: Analysis of the Arctic System for Freshwater Cycle Intensification:
Observations and Expectations, J. Clim., 23, 5715–5737,
https://doi.org/10.1175/2010jcli3421.1, 2010.
Raymond, P. A., McClelland, J. W., Holmes, R. M., Zhulidov, A. V., Mull, K.,
Peterson, B. J., Striegl, R. G., Aiken, G. R., and Gurtovaya, T. Y.: Flux
and age of dissolved organic carbon exported to the Arctic Ocean: A carbon
isotopic study of the five largest arctic rivers, Global Biogeochem. Cy., 21,
Gb4011, https://doi.org/10.1029/2007gb002934, 2007.
Schlitzer, R.: Interactive analysis and visualization of geoscience data
with Ocean Data View, Comput. Geosci.-UK, 28, 1211–1218, https://doi.org/10.1016/S0098-3004(02)00040-7, 2002.
Selyuzhenok, V., Krumpen, T., Mahoney, A., Janout, M., and Gerdes, R.:
Seasonal and interannual variability of fast ice extent in the southeastern
Laptev Sea between 1999 and 2013, J. Geophys. Res.-Ocean., 120, 7791–7806,
https://doi.org/10.1002/2015jc011135, 2015.
Semiletov, I., Pipko, I., Gustafsson, O., Anderson, L. G., Sergienko, V.,
Pugach, S., Dudarev, O., Charkin, A., Gukov, A., Broder, L., Andersson, A.,
Spivak, E., and Shakhova, N.: Acidification of East Siberian Arctic Shelf
waters through addition of freshwater and terrestrial carbon, Nat. Geosci., 9,
361–365, https://doi.org/10.1038/ngeo2695, 2016.
Shin, K. H. and Tanaka, N.: Distribution of dissolved organic matter in the
eastern Bering Sea, Chukchi Sea (Barrow Canyon) and Beaufort Sea, Geophys.
Res. Lett., 31, L24304, https://doi.org/10.1029/2004gl021039, 2004.
Shiklomanov, A. I., Holmes, R. M., McClelland, J. W., Tank, S. E., and
Spencer, R. G. M.: ArcticGRO Discharge Dataset, Version 2020-01-23,
available at: https://www.arcticgreatrivers.org/data (last access: 25 February 2020), 2020.
Soppa, M. A., Pefanis, V., Hellmann, S., Losa, S. N., Hölemann, J.,
Martynov, F., Heim, B., Janout, M. A., Dinter, T., Rozanov, V., and Bracher,
A.: Assessing the Influence of Water Constituents on the Radiative Heating
of Laptev Sea Shelf Waters, Front Mar. Sci., 6, 221,
https://doi.org/10.3389/fmars.2019.00221, 2019.
Spreen, G., Kaleschke, L., and Heygster, G.: Sea ice remote sensing using
AMSR-E 89-GHz channels, J. Geophys. Res.-Ocean., 113, C02s03,
https://doi.org/10.1029/2005jc003384, 2008.
Stedmon, C. A. and Markager, S.: The optics of chromophoric dissolved
organic matter (CDOM) in the Greenland Sea: An algorithm for differentiation
between marine and terrestrially derived organic matter, Limnol. Oceanogr.,
46, 2087–2093, https://doi.org/10.4319/lo.2001.46.8.2087, 2001.
Stedmon, C. A., Amon, R. M. W., Rinehart, A. J., and Walker, S. A.: The
supply and characteristics of colored dissolved organic matter (CDOM) in the
Arctic Ocean: Pan Arctic trends and differences, Mar. Chem., 124, 108–118,
https://doi.org/10.1016/j.marchem.2010.12.007, 2011.
Stroeve, J. and Notz, D.: Changing state of Arctic sea ice across all
seasons, Environ. Res. Lett., 13, 103001,
https://doi.org/10.1088/1748-9326/aade56, 2018.
Tanaka, K., Takesue, N., Nishioka, J., Kondo, Y., Ooki, A., Kuma, K.,
Hirawake, T., and Yamashita, Y.: The conservative behavior of dissolved
organic carbon in surface waters of the southern Chukchi Sea, Arctic Ocean,
during early summer, Sci. Rep.-UK, 6, 34123,
https://doi.org/10.1038/srep34123, 2016.
Tank, S. E., Striegl, R. G., McClelland, J. W., and Kokelj, S. V.:
Multi-decadal increases in dissolved organic carbon and alkalinity flux from
the Mackenzie drainage basin to the Arctic Ocean, Environ. Res. Lett., 11,
054015, https://doi.org/10.1088/1748-9326/11/5/054015, 2016.
Terhaar, J., Lauerwald, R., Regnier, P., Gruber, N., and Bopp, L.: Around
one third of current Arctic Ocean primary production sustained by rivers and
coastal erosion, Nat. Commun., 12, 169,
https://doi.org/10.1038/s41467-020-20470-z, 2021.
Timmermans, M.-L. and Marshall, J.: Understanding Arctic Ocean Circulation:
A Review of Ocean Dynamics in a Changing Climate, J. Geophys.
Res.-Ocean., 125, 1–35, https://doi.org/10.1029/2018jc014378, 2020.
Wegner, C., Wittbrodt, K., Hölemann, J. A., Janout, M. A., Krumpen, T.,
Selyuzhenok, V., Novikhin, A., Polyakova, Y., Krykova, I., Kassens, H., and
Timokhov, L.: Sediment entrainment into sea ice and transport in the
Transpolar Drift: A case study from the Laptev Sea in winter 2011/2012, Cont.
Shelf Res., 141, 1–10, https://doi.org/10.1016/j.csr.2017.04.010, 2017.
Xie, H., Aubry, C., Zhang, Y., and Song, G.: Chromophoric dissolved organic
matter (CDOM) in first-year sea ice in the western Canadian Arctic, Mar.
Chem., 165, 25–35, https://doi.org/10.1016/j.marchem.2014.07.007, 2014.
Zabłocka, M., Kowalczuk, P., Meler, J., Peeken, I., Dragańska-Deja,
K., and Winogradow, A.: Compositional differences of fluorescent dissolved
organic matter in Arctic Ocean spring sea ice and surface waters north of
Svalbard, Mar. Chem., 227, 103893,
https://doi.org/10.1016/j.marchem.2020.103893, 2020.
Short summary
The Arctic Ocean receives large amounts of river water rich in terrestrial dissolved organic matter (tDOM), which is an important component of the Arctic carbon cycle. Our analysis shows that mixing of three major freshwater sources is the main factor that regulates the distribution of tDOM concentrations in the Siberian shelf seas. In this context, the formation and melting of the land-fast ice in the Laptev Sea and the peak spring discharge of the Lena River are of particular importance.
The Arctic Ocean receives large amounts of river water rich in terrestrial dissolved organic...
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