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FältnamnIndikatorerMetadata
00006536naa a2200649 4500
001oai:DiVA.org:su-228071
003SwePub
008240508s2024 | |||||||||||000 ||eng|
009oai:research.chalmers.se:2cbcd29d-229c-4660-bbdc-73c95524c503
009oai:gup.ub.gu.se/336750
009oai:DiVA.org:uu-522807
024a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-2280712 URI
024a https://doi.org/10.5194/bg-21-671-20242 DOI
024a https://research.chalmers.se/publication/5402322 URI
024a https://gup.ub.gu.se/publication/3367502 URI
024a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-5228072 URI
040 a (SwePub)sud (SwePub)cthd (SwePub)gud (SwePub)uu
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
100a Prytherch, John,d 1980-u Stockholms universitet,Meteorologiska institutionen (MISU),Bolincentret för klimatforskning (tills m KTH & SMHI),Uppsala University, Sweden,Uppsala universitet,Stockholm University,Luft-, vatten- och landskapslära,Department of Meteorology, Stockholm University, Stockholm, 10691, Sweden; Bolin Centre for Climate Research, Stockholm, 10691, Sweden4 aut0 (Swepub:uu)johpr361
2451 0a Central Arctic Ocean surface-atmosphere exchange of CO2 and CH4 constrained by direct measurements
264 1b Copernicus Publications,c 2024
338 a print2 rdacarrier
520 a The central Arctic Ocean (CAO) plays an important role in the global carbon cycle, but the current and future exchange of the climate-forcing trace gases methane (CH4) and carbon dioxide (CO2) between the CAO and the atmosphere is highly uncertain. In particular, there are very few observations of near-surface gas concentrations or direct air-sea CO2 flux estimates and no previously reported direct air-sea CH4 flux estimates from the CAO. Furthermore, the effect of sea ice on the exchange is not well understood. We present direct measurements of the air-sea flux of CH4 and CO2, as well as air-snow fluxes of CO2 in the summertime CAO north of 82.5 N from the Synoptic Arctic Survey (SAS) expedition carried out on the Swedish icebreaker Oden in 2021. Measurements of air-sea CH4 and CO2 flux were made using floating chambers deployed in leads accessed from sea ice and from the side of Oden, and air-snow fluxes were determined from chambers deployed on sea ice. Gas transfer velocities determined from fluxes and surface-water-dissolved gas concentrations exhibited a weaker wind speed dependence than existing parameterisations, with a median sea-ice lead gas transfer rate of 2.5cmh-1 applicable over the observed 10m wind speed range (1-11ms-1). The average observed air-sea CO2 flux was -7.6mmolm-2d-1, and the average air-snow CO2 flux was -1.1mmolm-2d-1. Extrapolating these fluxes and the corresponding sea-ice concentrations gives an August and September flux for the CAO of -1.75mmolm-2d-1, within the range of previous indirect estimates. The average observed air-sea CH4 flux of 3.5μmolm-2d-1, accounting for sea-ice concentration, equates to an August and September CAO flux of 0.35μmolm-2d-1, lower than previous estimates and implying that the CAO is a very small (‰ 1%) contributor to the Arctic flux of CH4 to the atmosphere.
650 7a NATURVETENSKAPx Geovetenskap och miljövetenskapx Meteorologi och atmosfärforskning0 (SwePub)105082 hsv//swe
650 7a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Meteorology and Atmospheric Sciences0 (SwePub)105082 hsv//eng
650 7a NATURVETENSKAPx Geovetenskap och miljövetenskapx Oceanografi, hydrologi och vattenresurser0 (SwePub)105092 hsv//swe
650 7a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Oceanography, Hydrology and Water Resources0 (SwePub)105092 hsv//eng
650 7a NATURVETENSKAPx Geovetenskap och miljövetenskapx Geokemi0 (SwePub)105062 hsv//swe
650 7a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Geochemistry0 (SwePub)105062 hsv//eng
653 a air-sea interaction
653 a carbon cycle
653 a carbon dioxide
653 a concentration (composition)
653 a methane
653 a sea ice
700a Murto, Sonja,d 1992-u Stockholms universitet,Meteorologiska institutionen (MISU),Bolincentret för klimatforskning (tills m KTH & SMHI),Stockholm University4 aut0 (Swepub:su)somu9760
700a Brown, Ianu Plymouth Marine Laboratory4 aut
700a Ulfsbo, Adam,d 1985u Gothenburg University,Göteborgs universitet,Institutionen för marina vetenskaper,Department of marine sciences4 aut0 (Swepub:gu)xulfad
700a Thornton, Brett F.,d 1975-u Stockholms universitet,Bolincentret för klimatforskning (tills m KTH & SMHI),Institutionen för geologiska vetenskaper,Stockholm University4 aut0 (Swepub:su)brtho
700a Brüchert, Volker,d 1965-u Stockholms universitet,Institutionen för geologiska vetenskaper,Bolincentret för klimatforskning (tills m KTH & SMHI),Stockholm University4 aut0 (Swepub:su)vbruc
700a Tjernström, Michael,d 1955-u Stockholms universitet,Meteorologiska institutionen (MISU),Bolincentret för klimatforskning (tills m KTH & SMHI),Stockholm University4 aut0 (Swepub:su)tjern
700a Lunde Hermansson, Anna,d 1987u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)annaher
700a Nylund, Amanda,d 1989u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)nylunda
700a Holthusen, Lina A.u Helmholtz Zentrum,Helmholtz Center,Carl von Ossietzky Universität Oldenburg,The Carl von Ossietzky University of Oldenburg4 aut
710a Stockholms universitetb Meteorologiska institutionen (MISU)4 org
773t Biogeosciencesd : Copernicus Publicationsg 21:2, s. 671-688q 21:2<671-688x 1726-4170x 1726-4189
856u https://doi.org/10.5194/bg-21-671-2024y Fulltext
856u https://research.chalmers.se/publication/540232/file/540232_Fulltext.pdfx primaryx freey FULLTEXT
856u https://uu.diva-portal.org/smash/get/diva2:1836550/FULLTEXT02.pdfx primaryx Raw objecty fulltext:print
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-228071
8564 8u https://doi.org/10.5194/bg-21-671-2024
8564 8u https://research.chalmers.se/publication/540232
8564 8u https://gup.ub.gu.se/publication/336750
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-522807

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