Pete Puleo @petepuleo.bsky.social · 08/12/2024Given our interests in reconstructing precipitation δ18O values at a seasonal scale back in time, we set out to explore the potential of aquatic moss growth segments in northwest Greenland for reconstructing seasonal hydroclimate. /3 110 1
Pete Puleo @petepuleo.bsky.social · 08/12/2024We infer weekly to monthly changes in lake water δ18O values from subsampled aquatic moss δ18O values through the summer and compare them with direct summer lake water δ18O measurements at 8 sites. We find similar increasing trends in both, showing the strength of the proxy. /4 110 1
Pete Puleo @petepuleo.bsky.social · 08/12/2024Last, we compare the δ18O values of consecutive aquatic moss segments that grew in spring vs. summer and summer vs. fall. We observe higher δ18O values during the fall compared to summer, likely due to evaporation and the 18O enriched precipitation in the late summer/fall. /5 120 2
