Global lake brGDGTs collected at 2024

We compiled a dataset of 949 lake surface sediment samples containing brGDGTs data, including FAs for both 5- and 6-methyl isomers, sourced from various published studies (Li et al., 2017; Dang et al., 2018; Russell et al., 2018; Qian et al., 2019; Cao et al., 2020; Yao et al., 2020; Martínez-Sosa et al., 2021; Raberg et al., 2021; Wang et al., 2021; Zhao et al., 2021; Zhu et al., 2021; Kou et al., 2022; Lei et al., 2023; O’Beirne et al., 2023; Wang et al., 2023; Wu et al., 2023; Zhao et al., 2023). Recent studies identified 7-methyl brGDGTs (Weber et al., 2018; Wang et al., 2023), therefore, we recalculated the FAs by excluding the 7-methyl brGDGTs for consistency across the dataset.