SEES.NL/2022

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http://www.sees.nl/2015
http://www.sees.nl/2022

All members of the scientific expedition, listed alphabetically
Click on a name for a complete profile

Altena, Bas
Bastmeijer, Kees
Beelen, Hans
Belgers, Jan
Bilt, Willem van der
Bintanja, Richard
Blaauw, Robert
Boerigter, Daniëlle
Boonman, Jim
Brasseur, Sophie
Brink, Nico van den
Brochard, Christophe
Buiter, Rob
Cooper, Elisabeth
Copper, Jaap
Copper, Adrienne
Desjardins, Sean
Eerden, Arne van

Eerden, Mennobart van
Eijs, Mevrouw
Eijs, Arthur
Ekker, Heleen
Elfrink, Marijke
Elzinga, Hendrik
Enter, Elske van
Evers, Bernadette
Gaag, Belinda van der
Hansen, Brage
Hebel, Frank von
Heuvel, Martine van den
Hilgen, Cecile
Hoek, Wim
Hokwerda, Renno
Hoorn, Martinus van
Huijzer, Tom
Jalink, Leo

Kühn, Susanne
Kanters, Geert
Klarenberg, Ingeborg
Kluijver, Adwin de
Korte, Ko de
Kroef, Dick van der
Krooneman, Janneke
Kruijer, Hans
Kruse, Frigga
Kuile, Liz ter
Kuiper, Jaap
Löff, Annette
Leemans, Eelco
Leeuw, Joep de
Lemoullec, Mathilde
Lihavainen, Heikki
Loonen, Lisette
Loonen, Maarten

Lubberink, Albert
Lubberink, Patricia
Mengedoht, Dirk
Miloch, Wojciech
Mulder, Ingeborg
Nasr, Ramsey
Noël, Brice
Oers, Emil van
Petursdottir, Thora
Proanger, Jitske
Rooke, Wouter
Schartau, Ann Kristin
Scheepstra, Annette
Schilling, Govert
Schreven, Kees
Serail, Paul
Soest, Maud van
Sokolíčková, Zdenka

Stech, Michael
Steenhuisen, Frits
Steg, Linda
Steins, Nathalie
Sztybor, Emilia
Veen, Ivo van
Veraart, Annelies
Verdaat, Hans
Visser, Ronald
Vries, Koos de
Wal, René van der
Want, Han van der
Wiesebron, Lauren



Wim Hoek
UU

scientist
climate reconstruction

video while planning

Reconstruct recent and past climate and environmental change by investigating lake deposits

We want to reconstruct recent and past climate and environmental change by investigating lake deposits using multiple proxies and dating strategies in combination with growing season reconstructions based on recent and fossil Salix polaris leaf material. The proposed research will lead to: 1) better understanding of base-level natural environmental changes in arctic environments over the last thousands of years; 2) quantification of the impact of recent climate change on artic environments; 3) contribute to the knowledge of relative sea-level changes by dating the isolation of the lake basins; and 4) explore the potential of tephrostratigraphy to reconstruct atmosphere dynamics.
Together with Cecile Hilgen.

Lake sediments and organic geochemical paleotemperature proxies

We plan to collect sediment cores from any accessible lakes as part of the SEES Expedition. We anticipate these sediment records will span approximately the past 10,000 years, and plan to date the cores using a combination of cryptotephra analysis and macrofossil radiocarbon dating. We will then produce paired, independent, high resolution paleotemperature records using novel organic geochemical proxies. The first is based on compounds called alkenones produced by haptophyte algae living in the lakes (the Uk37 index). Van der Bilt has successfully applied this proxy to lake records from NW Svalbard in the past (van der Bilt et al., 2018). We also plan to utilize a relatively new proxy based on bacterial membrane lipids known as branched glycerol dialkyl glycerol tetraethers (brGDGTs). The distribution of these compounds has been shown to relate to local air temperature, and they have been successfully applied to Arctic lake settings in the past (e.g. de Wet et al., 2016), though not on Svalbard to date.

Additionally, the team of Wim Hoek is planning on reconstructing climate over the past 4,000 years using techniques that are complimentary but do not overlap with the proxies described above. We feel the generation of supporting datasets from the same lakes will increase the efficacy of our data and strengthen conclusions from both teams.
Together with Willem van der Bilt.

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