http://bolin.su.se/data/hallberg-2022-sumatra-3 Petter Hällberg, Guillermo Jarne Bueno, Yolanda Schankat, Julia Steinbach, Hamdi Rifai, Caroline Bouvet de la Maisonneuve, Rienk H. Smittenberg Bolin Centre Database 2024 Datafile Terrestrial Geochemistry brGDGTs isoGDGTs GDGT H-GDGTs Temperature reconstruction Holocene Proxy Biomarkers Lipids Earth science > Atmosphere > Atmospheric temperature > Atmospheric temperature indices Petter Hällberg 2024-03-07T07:33:28+00:00 English 3 Reported data are the peak areas of a range of GDGT compounds. Blanks indicate that the compound was absent in the sample, or under the limit of quantification. File type: `.csv`. Character set: Western Europe (ISO-8859-15/EURO). File size: 110 kB. Column description: - Type (peat, lake, or soil) - Site - Sample name - Latitude (°N) - Longitude (°E) - Age (years BP) - Depth (cm; where 0 for soils indicate that the samples were collected from the upper centimeter, i.e. less than 1 cm depth) - Elevation (m) - 5-methyl brGDGTs: Ia, Ib, Ic, IIa, IIb, IIc, IIIa, IIIb, IIIc - 6-methyl brGDGTs: IIa', IIb', IIIa', IIIb' - 7-methyl brGDGT: IIIa7 - Isoprenoid GDGTs: GDGT-0, GDGT-1, GDGT-2, GDGT-3, GDGT-4, cren, cren isomer - H-brGDGTs: H1020a, H1020b, H1020c, H1034a, H1034b, H1034c, H1048 - H-isoGDGTs: H-GDGT-0, H-GDGT-1, H-GDGT-2 For naming convections and molecular structures for brGDGTs and H-isoGDGTs, see [Naafs et al. 2018](https://doi.org/10.1016/j.gca.2018.02.025) and for H-brGDGTs see [Baxter et al. 2019](https://doi.org/10.1016/j.gca.2019.05.039). Petter Hällberg generated the Diatas and Singgalang data and curated all other data. Guillermo Jarne Bueno generated the Padang data and Yolanda Schankat generated the lake Maninjau data. Julia Steinbach assisted with the analyses. Hamdi Rifai and Caroline Bouvet de la Maisonneuve were responsible for the collection of the Diatas, Padang and Maninjau samples and aided in obtaining the Singgalang samples. [Rienk H. Smittenberg](mailto:smittenberg@gmail.com) provided funding and led the project and he is also an alternative contact person. #### Version history ##### Version 3 Separated H1020ab into the respective peaks H1020a and H1020b following updated peak integrations. Corrected a typo in the Padang coordinate. ##### Version 2 Site coordinates added and updated some H-1034 values following peak integration corrections. ##### Version 1 Initial release.