Personkort bilde

Kjellman, Sofia Elisabeth

Stipendiat Institutt for geovitenskap
Engelsk flaggikon Samisk flaggikon

Målet med mitt doktorgradsprosjekt er å rekonstruere hvordan nedbøren på Svalbard har variert de siste ca. 12 000 årene. Arktisk nedbør er viktig for breenes massebalanse og påvirkes av endringer i havisens utbredelse. Nedbøren varierer mye både tidsmessig og romslig, og er vanskelig å rekonstruere på grunn av mangel på bra klimaarkiver. Jeg undersøker variasjoner i nedbør over tid ved å analysere hydrogenisotopsammensetningen i bladvoks ekstrahert fra innsjøsedimenter. Jeg studerer også moderne vannisotopdata for å bedre forstå mekanismene bak endringer i den isotopiske sammensetningen i nedbør og innsjøvann. Jeg er spesielt interessert i hvordan nedbøren varierer mellom årstidene, og på hvilken måte vi kan øke kunnskapen om fortidens klima ved bruk av isotopproxyer. Dette prosjektet vil forbedre vår forståelse av arktisk nedbørsvariasjon og hjelpe oss med å sette nyere observasjoner inn i en langtidskontekst.

Stipendiat i kvartærgeologi og paleoklima

  • Allaart, Lis; Schomacker, Anders; Håkansson, Lena; Farnsworth, Wesley R.; Brynjólfsson, Skafti; Grumstad, Andreas; Kjellman, Sofia Elisabeth. Geomorphology and surficial geology of the Femmilsjøen area, northern Spitsbergen. Geomorphology 2021; Volum 382. ISSN 0169-555X.s doi: 10.1016/j.geomorph.2021.107693.

  • Alsos, Inger Greve; Lammers, Youri; Kjellman, Sofia Elisabeth; Merkel, Marie Føreid; Bender, Emma Marie; Rouillard, Alexandra; Erlendsson, Egill; Gudmundsdottir, Esther Ruth; Benediktsson, Ívar Örn; Farnsworth, Wesley Randall; Brynjólfsson, Skafti; Gísladóttir, Guðrún; Eddudóttir, Sigrún Dögg; Schomacker, Anders. Ancient sedimentary DNA shows rapid post-glacial colonisation of Iceland followed by relatively stable vegetation until the Norse settlement (Landnám) AD 870. Quaternary Science Reviews 2021; Volum 259. ISSN 0277-3791.s doi: 10.1016/j.quascirev.2021.106903.

  • Allaart, Lis; Schomacker, Anders; Larsen, Nicolaj K.; Nørmark, Egon; Rydningen, Tom Arne; Farnsworth, Wesley R.; Retelle, Michael J.; Brynjólfsson, Skafti; Forwick, Matthias; Kjellman, Sofia Elisabeth. Glacial history of the Åsgardfonna Ice Cap, NE Spitsbergen, since the last glaciation. Quaternary Science Reviews 2020; Volum 251 (106717). ISSN 0277-3791.s doi: 10.1016/j.quascirev.2020.106717.

  • Kjellman, Sofia Elisabeth; Schomacker, Anders; Thomas, Elizabeth K.; Håkansson, Lena; Duboscq, Sandrine; Cluett, Allison; Farnsworth, Wesley Randall; Allaart, Lis; Cowling, Owen; McKay, Nicholas P.; Brynjólfsson, Skafti; Ingólfsson, Ólafur. Holocene precipitation seasonality in northern Svalbard: Influence of sea ice and regional ocean surface conditions. Quaternary Science Reviews 2020; Volum 240. ISSN 0277-3791.s 1 - 15.s doi: 10.1016/j.quascirev.2020.106388.

  • Allaart, Lis; Müller, Juliane; Schomacker, Anders; Rydningen, Tom Arne; Håkansson, Lena; Kjellman, Sofia Elisabeth; Mollenhauer, Gesine; Forwick, Matthias. Late Quaternary glacier and sea-ice history of northern Wijdefjorden, Svalbard. Boreas 2020; Volum 49 (3). ISSN 0300-9483.s 417 - 437.s doi: 10.1111/bor.12435.

  • Voldstad, Linn Margrethe Høeg; Alsos, Inger Greve; Farnsworth, Wesley Randall; Heintzman, Peter D.; Håkansson, Lena; Kjellman, Sofia Elisabeth; Rouillard, Alexandra; Schomacker, Anders; Eidesen, Pernille Bronken. A complete Holocene lake sediment ancient DNA record reveals long-standing high Arctic plant diversity hotspot in northern Svalbard. Quaternary Science Reviews 2020; Volum 234. ISSN 0277-3791.s 1 - 15.s doi: 10.1016/j.quascirev.2020.106207.

  • Schomacker, Anders; Farnsworth, Wesley Randall; Ingólfsson, Ólafur; Allaart, Lis; Håkansson, Lena; Retelle, Michael J.; Marie-Louise, Siggaard-Andersen; Korsgaard, Niels Jákup; Rouillard, Alexandra; Kjellman, Sofia Elisabeth. Postglacial relative sea level change and glacier activity in the early and late Holocene: Wahlenbergfjorden, Nordaustlandet, Svalbard. Scientific Reports 2019; Volum 9. ISSN 2045-2322.s doi: 10.1038/s41598-019-43342-z.

  • Kjellman, Sofia E.; Axelsson, Pia E.; Etzelmüller, Bernd; Westermann, Sebastian; Sannel, A. Britta K.. Holocene development of subarctic permafrost peatlands in Finnmark, northern Norway. (Fulltekst: https://journals.sagepub.com/doi/10.1177/0959683618798126 The Holocene 2018; Volum 28 (12). ISSN 0959-6836.s 1855 - 1869.s doi: 10.1177/0959683618798126.

  • Alsos, Inger Greve; Lammers, Youri; Kjellman, Sofia Elisabeth; Merkel, Marie Føreid; Bender, Emma Marie; Rouillard, Alexandra; Erlandsson, Ergill; Gudmundsdottir, Esther Ruth; Beneditsson, Ivar Ørn; Farnsworth, Wesley Randall; Brynjólfsson, Skafti; Gisladottir, Gudrun; Eddudóttir, Sigrún Dögg; Schomacker, Anders. Ancient sedimentary DNA shows rapid post-glacial colonization of Iceland followed by relatively stable vegetation until Landnám. EGU General Assembly (Fulltekst: https://doi.org/10.5194/egusphere-egu21-14474 2021-04-26 - 2021.

  • Allaart, Lis; Schomacker, Anders; Forwick, Matthias; Rydningen, Tom Arne; Farnsworth, Wesley R.; Retelle, Michael J.; Håkansson, Lena; Brynjólfsson, Skafti; Kjellman, Sofia Elisabeth. Holocene environmental history of lake Femmilsjøen, northern Svalbard. Nordic Geological Winter Meeting 2020-01-08 - 2020-01-10 2020.

  • Poliakova, Anastasia; Håkansson, Lena; Schomacker, Anders; Brown, Antony; Kjellman, Sofia Elisabeth; Alsos, Inger Greve. Multi-proxy study based on sedaDNA, pollen and plant macrofossils detects high proportion of Svalbard flora over the past 700 years. Virtual ForBio Annual Meeting 2020 2020-12-02 - 2020-12-04 2020.

  • Poliakova, Anastasia; Håkansson, Lena; Schomacker, Anders; Brown, Antony; Kjellman, Sofia Elisabeth; Alsos, Inger Greve. Multi-proxy study on ancient plant DNA, geochemical profiles, macro- and microfossils established event-based chronology for the High Arctic lake Tenndammen, Svalbard. MICROFOSSIL GEOCHEMISTRY WORKSHOP 2020-11-10 - 2020-11-10 2020.

  • Kjellman, Sofia Elisabeth. Holocene precipitation seasonality in Svalbard inferred from δ2H of sedimentary leaf waxes. CHESS Annual Meeting 2020 2020-09-28 - 2020-09-30 2020.

  • Kjellman, Sofia Elisabeth; Schomacker, Anders; Thomas, Elizabeth K.. Lake Water Isotope Gradients in Arctic Norway, Sweden and Finland: Implications for Proxy-based Precipitation Reconstructions. AGU Fall Meeting 2020 (Sammendrag: https://agu.confex.com/agu/fm20/webprogram/Paper676629.html) 2020-12-01 - 2020-12-17 2020.

  • Eilertsen, Vårin Trælvik; Bulinová, Marie; Lockwood-Ireland, Christine; Allaart, Lis; Schomacker, Anders; Kjellman, Sofia Elisabeth. Fortidens klima/Paleoclimate. Geologiens Dag 2020/ Geology Day 2020 2020-09-13 - 2020-09-13 2020.

  • Kjellman, Sofia Elisabeth. Hydrogenisotopenes hemmelighet. (Fulltekst: https://www.geoforskning.no/nyheter/klima-og-co2/2287-hydrogenisotopenes-hemmelighet geoforskning.no 2020.

  • Schomacker, Anders; Kjellman, Sofia Elisabeth. Flyvende forskere – et klimaproblem. (Fulltekst: https://blogg.forskning.no/akademiet-for-yngre-forskere/flyvende-forskere--et-klimaproblem/1341477 Forskning.no 2019. ISSN 1891-635X.

  • Kjellman, Sofia Elisabeth. As a climate researcher, should I change my air-travel habits?. Nature 2019; Volum 571 (7766). ISSN 0028-0836.s S48 - S49.s doi: 10.1038/d41586-019-01652-2.

  • Allaart, Lis; Schomacker, Anders; Forwick, Matthias; Rydningen, Tom Arne; Farnsworth, Wesley Randall; Müller, Juliane; Retelle, Michael; Håkansson, Lena; Brynjólfsson, Skafti; Kjellman, Sofia Elisabeth. Wijdefjorden and Femmilsjøen – an integrated fjord-lake study in northern Spitsbergen. 20th Congress of the International Union for Quaternary Research (INQUA) 2019-07-24 - 2019-07-31 2019.

  • Allaart, Lis; Schomacker, Anders; Forwick, Matthias; Rydningen, Tom Arne; Farnsworth, Wesley Randall; Müller, Juliane; Retelle, Michael; Håkansson, Lena; Brynjólfsson, Skafti; Kjellman, Sofia Elisabeth. Wijdefjorden and Femmilsjøen - a fjord-lake study in northern Spitsbergen. 49th International Arctic Workshop 2019 2019-04-03 - 2019-04-05 2019.

  • Kjellman, Sofia Elisabeth; Schomacker, Anders; Thomas, Elizabeth K.; Håkansson, Lena; Duboscq, Sandrine; Cluett, Allison; Farnsworth, Wesley Randall; Allaart, Lis; Cowling, Owen. Leaf wax hydrogen isotope reconstruction of Holocene precipitation seasonality in High Arctic Svalbard. 49th International Arctic Workshop 2019-04-05 - 2019.

  • Kjellman, Sofia Elisabeth; Schomacker, Anders; Håkansson, Lena; Thomas, Elizabeth K.. Holocene Arctic precipitation and its response to sea ice extent - using leaf wax hydrogen isotopes as a proxy. IPA-IAL Joint Meeting 2018-06-18 - 2018-06-21 2018.

  • Alsos, Inger Greve; Lammers, Youri; Kjellman, Sofia Elisabeth; Merkel, Marie Føreid; Bender, Emma Marie; Rouillard, Alexandra; Erlandsson, Ergill; Gudmundsdottir, Esther Ruth; Beneditsson, Ivar Ørn; Farnsworth, Wesley Randall; Brynjólfsson, Skafti; Gisladottir, Gudrun; Eddudóttir, Sigrún Dögg; Schomacker, Anders. Ancient sedimentary DNA shows rapid post-glacial colonization of Iceland followed by relatively stable vegetation until Landnám. EGU General Assembly (Fulltekst: https://doi.org/10.5194/egusphere-egu21-14474 2021-04-26 - 2021.

  • Allaart, Lis; Schomacker, Anders; Forwick, Matthias; Rydningen, Tom Arne; Farnsworth, Wesley R.; Retelle, Michael J.; Håkansson, Lena; Brynjólfsson, Skafti; Kjellman, Sofia Elisabeth. Holocene environmental history of lake Femmilsjøen, northern Svalbard. Nordic Geological Winter Meeting 2020-01-08 - 2020-01-10 2020.

  • Poliakova, Anastasia; Håkansson, Lena; Schomacker, Anders; Brown, Antony; Kjellman, Sofia Elisabeth; Alsos, Inger Greve. Multi-proxy study based on sedaDNA, pollen and plant macrofossils detects high proportion of Svalbard flora over the past 700 years. Virtual ForBio Annual Meeting 2020 2020-12-02 - 2020-12-04 2020.

  • Poliakova, Anastasia; Håkansson, Lena; Schomacker, Anders; Brown, Antony; Kjellman, Sofia Elisabeth; Alsos, Inger Greve. Multi-proxy study on ancient plant DNA, geochemical profiles, macro- and microfossils established event-based chronology for the High Arctic lake Tenndammen, Svalbard. MICROFOSSIL GEOCHEMISTRY WORKSHOP 2020-11-10 - 2020-11-10 2020.

  • Kjellman, Sofia Elisabeth. Holocene precipitation seasonality in Svalbard inferred from δ2H of sedimentary leaf waxes. CHESS Annual Meeting 2020 2020-09-28 - 2020-09-30 2020.

  • Kjellman, Sofia Elisabeth; Schomacker, Anders; Thomas, Elizabeth K.. Lake Water Isotope Gradients in Arctic Norway, Sweden and Finland: Implications for Proxy-based Precipitation Reconstructions. AGU Fall Meeting 2020 (Sammendrag: https://agu.confex.com/agu/fm20/webprogram/Paper676629.html) 2020-12-01 - 2020-12-17 2020.

  • Eilertsen, Vårin Trælvik; Bulinová, Marie; Lockwood-Ireland, Christine; Allaart, Lis; Schomacker, Anders; Kjellman, Sofia Elisabeth. Fortidens klima/Paleoclimate. Geologiens Dag 2020/ Geology Day 2020 2020-09-13 - 2020-09-13 2020.

  • Kjellman, Sofia Elisabeth. Hydrogenisotopenes hemmelighet. (Fulltekst: https://www.geoforskning.no/nyheter/klima-og-co2/2287-hydrogenisotopenes-hemmelighet geoforskning.no 2020.

  • Schomacker, Anders; Kjellman, Sofia Elisabeth. Flyvende forskere – et klimaproblem. (Fulltekst: https://blogg.forskning.no/akademiet-for-yngre-forskere/flyvende-forskere--et-klimaproblem/1341477 Forskning.no 2019. ISSN 1891-635X.

  • Kjellman, Sofia Elisabeth. As a climate researcher, should I change my air-travel habits?. Nature 2019; Volum 571 (7766). ISSN 0028-0836.s S48 - S49.s doi: 10.1038/d41586-019-01652-2.

  • Allaart, Lis; Schomacker, Anders; Forwick, Matthias; Rydningen, Tom Arne; Farnsworth, Wesley Randall; Müller, Juliane; Retelle, Michael; Håkansson, Lena; Brynjólfsson, Skafti; Kjellman, Sofia Elisabeth. Wijdefjorden and Femmilsjøen – an integrated fjord-lake study in northern Spitsbergen. 20th Congress of the International Union for Quaternary Research (INQUA) 2019-07-24 - 2019-07-31 2019.

  • Allaart, Lis; Schomacker, Anders; Forwick, Matthias; Rydningen, Tom Arne; Farnsworth, Wesley Randall; Müller, Juliane; Retelle, Michael; Håkansson, Lena; Brynjólfsson, Skafti; Kjellman, Sofia Elisabeth. Wijdefjorden and Femmilsjøen - a fjord-lake study in northern Spitsbergen. 49th International Arctic Workshop 2019 2019-04-03 - 2019-04-05 2019.

  • Kjellman, Sofia Elisabeth; Schomacker, Anders; Thomas, Elizabeth K.; Håkansson, Lena; Duboscq, Sandrine; Cluett, Allison; Farnsworth, Wesley Randall; Allaart, Lis; Cowling, Owen. Leaf wax hydrogen isotope reconstruction of Holocene precipitation seasonality in High Arctic Svalbard. 49th International Arctic Workshop 2019-04-05 - 2019.

  • Kjellman, Sofia Elisabeth; Schomacker, Anders; Håkansson, Lena; Thomas, Elizabeth K.. Holocene Arctic precipitation and its response to sea ice extent - using leaf wax hydrogen isotopes as a proxy. IPA-IAL Joint Meeting 2018-06-18 - 2018-06-21 2018.

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