Baja California Holocene Mg/Ca SST Reconstruction Marchitto, T.M.; Muscheler, R.; Ortiz, J.D. ; Carriquiry, J.D.; van Geen, A. Marchitto, T.M. Muscheler, R. Ortiz, J.D. Carriquiry, J.D. van Geen, A. ENSO Sea Surface Temperature Reconstruction earth science/paleoclimate/climate reconstructions|paleoceanography (sea surface temperature,magnesium/calcium,null,degree Celsius,annual,climate reconstructions|paleoceanography,null,null,N,Globigerina bulloides; calibration data set: Mashiotta et al. 1999) earth science/paleoclimate/climate reconstructions|paleoceanography (age,null,null,calendar kiloyear before present,null,climate reconstructions|paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (magnesium/calcium,Globigerina bulloides,null,millimole per mole,null,paleoceanography,null,inductively-coupled plasma mass spectrometry,N,null) earth science/paleoclimate/paleoceanography (magnesium/calcium,Globigerina bulloides,null,millimole per mole,null,paleoceanography,averaged,inductively-coupled plasma mass spectrometry,N,average of multiple samples) earth science/paleoclimate/paleoceanography (magnesium/calcium,Globigerina bulloides,two standard deviations lower bound,millimole per mole,null,paleoceanography,smoothed,inductively-coupled plasma mass spectrometry,N,smooth: 5 point running mean) earth science/paleoclimate/climate reconstructions|paleoceanography (depth,null,null,centimeter,null,climate reconstructions|paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (magnesium/calcium,Globigerina bulloides,one standard deviation,millimole per mole,null,paleoceanography,null,inductively-coupled plasma mass spectrometry,N,null) earth science/paleoclimate/paleoceanography (magnesium/calcium,Globigerina bulloides,two standard deviations upper bound,millimole per mole,null,paleoceanography,smoothed,inductively-coupled plasma mass spectrometry,N,smooth: 5 point running mean) earth science/paleoclimate/paleoceanography (magnesium/calcium,Globigerina bulloides,null,millimole per mole,null,paleoceanography,smoothed,inductively-coupled plasma mass spectrometry,N,smooth: 5 point running mean) earth science/paleoclimate/climate reconstructions|paleoceanography (sea surface temperature,magnesium/calcium,null,degree Celsius,annual,climate reconstructions|paleoceanography,averaged,null,N,Globigerina bulloides; calibration data set: Mashiotta et al. 1999; average of multiple samples) earth science/paleoclimate/reconstructions (MV99-GC41/PC14>LATITUDE 25.2>LONGITUDE -112.7) We present a high-resolution magnesium/calcium proxy record of Holocene sea surface temperature (SST) from off the west coast of Baja California Sur, Mexico, a region where interannual SST variability is dominated today by the influence of the El Niño-Southern Oscillation (ENSO). Temperatures were lowest during the early to middle Holocene, consistent with documented eastern equatorial Pacific cooling and numerical model simulations of orbital forcing into a La Niña-like state at that time. The early Holocene SSTs were also characterized by millennial-scale fluctuations that correlate with cosmogenic nuclide proxies of solar variability, with inferred solar minima corresponding to El Niño-like (warm) conditions, in apparent agreement with the theoretical "ocean dynamical thermostat" response of ENSO to exogenous radiative forcing. STUDY NOTES: High resolution Magnesium/Calcium data and reconstructed sea surface temperature (SST) from an Eastern Pacific sediment core. Core MV99-GC41/PC14 was drilled in the Soledad Basin off the west coast of Baja California Sur, Mexico. Mg/Ca ratios were measured on G. bulloides, which reflects spring upwelling. The record spans the Holocene and provides an ENSO signal. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Marchitto, T.M. Investigator : Muscheler, R. Investigator : Ortiz, J.D. Investigator : Carriquiry, J.D. Investigator : van Geen, A. 2010-12-06 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/10415 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/marchitto2010/marchitto2010.xls https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/marchitto2010/marchitto2010.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/marchitto2010/marchitto2010.xls https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/marchitto2010/marchitto2010.txt English https://www.ncdc.noaa.gov/paleo/study/10415 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/marchitto2010/marchitto2010.xls https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/marchitto2010/marchitto2010.txt Marchitto, T.M., R. Muscheler, J.D. Ortiz, J.D. Carriquiry, and A. van Geen. 2010. Dynamical Response of the Tropical Pacific Ocean to Solar Forcing During the Early Holocene. Science, Vol. 330, pp. 1378-1381. DOI: 10.1126/science.1194887 START YEAR: 13811 cal yr BP * END YEAR: 831 cal yr BP -112.7 25.2 -112.7 25.2