Little Pond, Massachusetts 16,000 Year Leaf Lipid Hydrogen Isotope Data Gao, L.; Huang, Y.; Shuman, B.N.; Oswald, W.; Foster, D.R. Gao, L. Huang, Y. Shuman, B.N. Oswald, W. Foster, D.R. earth science/paleoclimate/paleolimnology (depth,null,null,centimeter,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (delta 2H,C22 n-alkanoic acid,null,per mil VSMOW,null,paleolimnology,corrected,isotope ratio mass spectrometry,N,corrected for ice volume; measured on behenic acid) earth science/paleoclimate/paleolimnology (age,null,null,calendar year before present,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (Little Pond Royalston>LATITUDE 42.68>LONGITUDE -72.19) D/H ratios of leaf lipids from lacustrine aquatic macrophytes have been shown to record precipitation dD values, which can reflect precipitation-weighted mean annual temperature (MAT) in the northeastern United States. Here we report a high-resolution hydrogen isotopic record from Little Pond, Massachusetts, USA, which we compare with other paleoclimate data from the region, including a similar dD record from Blood Pond, Massachusetts. Together the two datasets provide a >16 ka record of dD variability in the region, affording new insights into Holocene climate history. First, the long-term trends in dD correlate significantly with regional temperatures inferred from alkenone records from nearby areas of the North Atlantic and lake-level inferred changes in precipitation and evaporation. The long-term dD trends reflect a period of maximum regional warmth at ca. 8-6 ka after the collapse of the Laurentide Ice Sheet. Second, unlike the positive relationship between temperature and dD observed over the long-term and during early events like the Younger Dryas, we find that a series of warm and dry events at 4.9-4.6, 4.2-3.9, 2.9-2.1, and 1.3-1.2 cal kya BP coincide with negative dD excursions from the long trends. These events were likely driven by summer drought dynamics. STUDY NOTES: Hydrogen isotope data of leaf lipids (C22 behenic acid) in lake sediments collected in Little Pond, Massachusetts, for the past 16,000 years. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Gao, L. Investigator : Huang, Y. Investigator : Shuman, B.N. Investigator : Oswald, W. Investigator : Foster, D.R. 2017-09-19 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/22690 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/usa/massachusetts/littlepond2017dd.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/usa/massachusetts/littlepond2017dd.txt English https://www.ncdc.noaa.gov/paleo/study/22690 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/usa/massachusetts/littlepond2017dd.txt Li Gao, Yongsong Huang, Bryan Shuman, W. Wyatt Oswald, David Foster2017A high-resolution hydrogen isotope record of behenic acid for the past 16 kyr in the northeastern United StatesQuaternary International4491-1110.1016/j.quaint.2017.06.053http://www.sciencedirect.com/science/article/pii/S1040618216312605 START YEAR: 15242 cal yr BP * END YEAR: -53 cal yr BP -72.19 42.68 -72.19 42.68