noaa-ocean-22588 2.8 million years of alkenone and TEX86 data and surface and subsurface temperature in the northern South China Sea Li, D.; Zhao, M.; Tian, J. 2.8 million years of alkenone and TEX86 data and surface and subsurface temperature in the northern South China Sea 2017-08-28 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/22588 Investigator D. Li Investigator M. Zhao Investigator J. Tian earth science paleoclimate climate reconstructions|paleoceanography sea surface temperature,glycerol dialkyl glycerol tetraether index,null,degree Celsius,null,climate reconstructions|paleoceanography,null,null,N,calculated after Jia et al. (2012) earth science paleoclimate climate reconstructions|paleoceanography age,null,null,calendar kiloyear before present,null,climate reconstructions|paleoceanography,null,null,N,null earth science paleoclimate climate reconstructions|paleoceanography sea surface temperature,alkenone unsaturation index,null,degree Celsius,null,climate reconstructions|paleoceanography,null,null,N,calculated after Mueller et al.(1998) earth science paleoclimate paleoceanography alkenone unsaturation index Uk37 prime,null,null,dimensionless,null,paleoceanography,null,null,N,calculated after Prahl and Wakeham (1987) earth science paleoclimate paleoceanography tetraether index of 86 carbon atoms,null,null,dimensionless,null,paleoceanography,null,null,N,calculated after Schouten et al. (2002) earth science paleoclimate climate reconstructions|paleoceanography depth,null,null,meter,null,climate reconstructions|paleoceanography,null,null,N,mcd earth science paleoclimate climate reconstructions|paleoceanography sample identification,null,null,null,null,climate reconstructions|paleoceanography,null,null,C,core name earth science paleoclimate paleoceanography branched and isoprenoid tetraether index,null,null,dimensionless,null,paleoceanography,null,null,N,calculated after Hopmans et al. (2004) earth science paleoclimate paleocean biomarkers earth science paleoclimate paleocean reconstruction geoscientificInformation Sea Surface Temperature Reconstruction 2785481 cal yr BP 257 cal yr BP Complete 18.836 18.836 116.566 116.566 -3296 -3296 Ocean Pacific Ocean Western Pacific Ocean South China Sea ODP 1148>LATITUDE 18.836>LONGITUDE 116.566 None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

325 Broadway, E/NE31

Boulder CO 80305-3328 USA online ASCII Li, D., M. Zhao, and J. Tian 2017 Quaternary Science Reviews 172 72-82 10.1016/j.quascirev.2017.08.005 http://www.sciencedirect.com/science/article/pii/S0277379117300914

Variability of the East Asian winter monsoon (EAWM), stronger during glacials and weaker during interglacials, has been tightly linked to the wax and wane of the Northern Hemisphere ice sheets (NHIS) via the Siberian High over the last 2.8 million years (Myr). However, the long eccentricity cycle (ca. 400 kyr) in the EAWM record from the late Pliocene to early-Pleistocene (2.8Ƀ1.2 Ma) could not be linked to NHIS changes, which lacked the long eccentricity cycle in the Pleistocene. Here, we present the first low latitude EAWM record of the last 2.8 Myr using surface and subsurface temperature difference from the northern South China Sea to evaluate interactions between tropical ocean and EAWM changes. The results show that the EAWM variability displayed significant 400 kyr cycle between 2.8 Ma and 1.2 Ma, with weak (strong) EAWM during high (low) earth orbital eccentricity state. A super El Ni?oɃSouthern Oscillation (ENSO) proxy record, calculated using west-east equatorial Pacific sea surface temperature differences, revealed 400 kyr cycles throughout the last 2.8 Myr with warm phase during high eccentricity state. Thus, we propose that super ENSO mean state strongly modulated the EAWM strength through remote forcing to generate the 400 kyr cycle between 2.8 Ma and 1.2 Ma, while low NHIS volume was not sufficient to dominate the EAWM variation as it did over the last 0.9 Myr with 100 kyr cycles in dominance. STUDY NOTES: Surface and subsurface temperature difference from the northern South China Sea was used to reconstruct east Asian winter monsoon.The 400 kyr cycle in east Asian winter monsoon was generated from remote forcing by super tropical Pacific ENSO.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/li2017/li2017.txt NOAA Template File; ODP 1148 Uk'37 and TEX86 Data and Temperature Reconstructions USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11