# San Lázaro Basin Carbon Productivity and Mg/Ca SST Data over the last 1800 Years #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program # National Centers for Environmental Information (NCEI) #----------------------------------------------------------------------- # Template Version 3.0 # Encoding: UTF-8 # NOTE: Please cite Publication, and Online_Resource and date accessed when using these data. # If there is no publication information, please cite Investigators, Title, and Online_Resource and date accessed. # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/23551 # Description: Study landing page # Online_Resource: https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/abella2019/abella2019_MgCaSST.txt # Description: NOAA location of this template # # Description/Documentation lines begin with # # Data lines have no # # # Archive: paleoceanography # # Dataset_DOI: # # Parameter_Keywords: geochemistry, reconstructions #-------------------- # Contribution_Date # Date: 2019-12-05 #-------------------- # File_Last_Modified_Date # Date: 2019-12-05 #-------------------- # Title # Study_Name: San Lázaro Basin Carbon Productivity and Mg/Ca SST Data over the last 1800 Years #-------------------- # Investigators # Investigators: Abella-Gutiérrez, J.; Herguera, J.C.; Mortyn, P.G.; Kelly, C.S.; Martínez-Botí, M.A. #-------------------- # Description_Notes_and_Keywords # Description: Weight percentage of carbonate and Corg in marine sediments. Water depths range from -528 to -540 m. #-------------------- # Publication # Authors: Abella-Gutiérrez, J., Herguera, J.C.,Mortyn, P.G., Kelly, C.S., Martínez-Botí, M.A. # Published_Date_or_Year: 2019 # Published_Title: Multidecadal climate variability in the southern region of the California Current System during the last 1800 years # Journal_Name: Paleoceanography and Paleoclimatology # Volume: # Edition: # Issue: # Pages: # Report_Number: # DOI: # Online_Resource: # Full_Citation: # Abstract: How climate warming is going to affect the multidecadal climate variability in the North Pacific remains an open question. Here we present a record of this type of variability inferred from carbon productivity and sea surface temperature (SST) proxies in high resolution sediment records from the Southern California Current System (CCS). The reconstruction covers ~1800 years of the Common Era, and is associated with the latitudinal migration of the CCS tropical boundary at multidecadal timescales. Inorganic carbon proxies and a Globigerinoides ruber Mg/Ca summer SST reconstruction are associated with the intrusion of the tropical waters in the Southern CCS, and organic carbon proxies with the strength of the California Current (CC). From these and other sediment components we derived a principal component that seems to capture the balance between tropical and subarctic waters in the study region. This principal component record shows further connections with land moisture records, which suggests a link with Pacific basin scale climate reorganization. The results show periods of reduced Pacific multidecadal climate variability associated with cold periods in the Northern Hemisphere (NH). We propose a mechanism related with the southward migration of the westerlies during relatively cool periods in the NH, and a southward shift of the North Pacific Current, which could have reduced the advection of subarctic waters to the subtropical region. # #------------------ # Funding_Agency # Funding_Agency_Name: Inter-American Institute for Global Change Research # Grant: UCAR97-73970 #------------------ # Funding_Agency # Funding_Agency_Name: CONACyT # Grant: grants SEP04-C01-46152, CB-2009-01-130095 #------------------ # Site_Information # Site_Name: San Lázaro Basin # Location: Eastern Pacific Ocean # Country: # Northernmost_Latitude: 25.216333 # Southernmost_Latitude: 25.159333 # Easternmost_Longitude: 112.678333 # Westernmost_Longitude: 112.733333 # Elevation: #------------------ # Data_Collection # Collection_Name: San Lazaro MgCaSST Abella2019 # Earliest_Year: 1642 # Most_Recent_Year: 1965 # Time_Unit: year CE # Core_Length: # Notes: #------------------ # Chronology_Information # Chronology: # 210Pb and 214Pb measurements for BAP96-6C are available in: Esparza-Alvarez, M. A., J. C. Herguera, and C. Lange (2007), Last century patterns of sea surface temperatures and diatom (>38 um) variability in the Southern California current, Mar. Micropaleontol., 64(1-2), 18–35, doi:10.1016/j.marmicro.2007.01.001. # # 14C ages. All measurements were made on mixed planktonic foraminifera and converted to calendar age using a reservoir age of 750+/-50 years. # # Core sample depth_interval_mm core_depth_mm composite_depth_mm 14C_Age Year(AD/BC) Age_range # PCM00-78K-II-6; 72-77 18 257 305 810 1753 137 # PCM00-78K-II-6; 117-118 3 411 459 975 1586 112 # PCM00-78K-III-6; 167-168 5 582 630 1140 1448 77 # PCM00-78K-III-6; 215-217 8 781 828 1405 1249 95 # PCM00-78K-IV-6; 317-320 13 985 1033 1600 1063 123 # PCM00-78K-IV-6; 375-378 11 1206 1254 1875 753 115 # PCM00-78K-V-7; 464-469 16 1575 1623 2200 462 138 # PCM00-78K-V-7; 518-523 20 1786 1833 2490 103 135 # ch94-2k-iv-2(20-35) 31 1374 1422 2070 565 257 # ch94-2k-iv-2 (420-427) 5 1854 1902 2410 181 267 # ch94-2k-v-4(85-88) 2 1963 2011 2535 133 346 # ch94-2k-v-4(378-384) 8 2261 2309 2840 -318 363 #---------------- # Variables # ## PCM00-78K_depth depth, , , millimeter, ,paleoceanography , , ,N, ## age_CE age, , ,year Common Era, ,paleoceanography , , ,N, ## Mg/Ca_SST sea surface temperature,Magnesium/Calcium; Globigerinoides ruber white, ,degree Celsius ,, ,climate reconstructions; paleoceanography,,,N,uses Dekens et al(2002). quadrupole inductively coupled plasma # #---------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Values: (-999) # PCM00-78K_depth age_CE Mg/Ca_SST 1 1965.65 21.84 3.65 1965.45 21.18 6.3 1964.84 19.91 8.95 1964.26 21.38 11.6 1963.68 21.88 14.25 1963.05 22.27 16.9 1962.48 22.54 19.55 1961.89 22.74 22.2 1961.26 22.27 24.85 1960.69 23.06 27.5 1960.1 22.59 30.15 1959.47 -999 32.8 1958.91 21.46 35.45 1958.23 -999 38.1 1957.68 -999 40.75 1957 -999 43.4 1956.42 -999 46 1955.8 -999 49.82 1954.17 -999 53.64 1952.65 -999 57.46 1951.11 -999 61.28 1949.51 -999 65.1 1947.97 23.02 68.92 1946.86 24.29 72.74 1945.92 23.93 76.56 1945 24.08 80.38 1944.02 24.26 84.2 1943.05 22.77 88.02 1942.07 23.23 91.84 1941.09 23.3 95.66 1940.12 21.8 99.48 1939.25 21.36 103.3 1938.26 22.51 107.12 1937.29 21.99 111 1936.4 -999 114.71 1934.14 22.6 118.42 1931.88 -999 122.13 1929.63 -999 125.84 1927.38 24.04 129.55 1925.16 -999 133.26 1922.94 23.56 136.97 1920.71 23.13 140.68 1918.49 23.76 144.39 1916.15 23.63 148.1 1914.09 22.77 151.81 1912.35 -999 155.52 1910 21.58 159.23 1906.14 23.65 162.94 1901.15 24.22 166.65 1896.21 23.26 170.36 1891.7 22.99 174 1887.4 -999 177.55 1883.96 23.28 181.1 1880.51 22.92 184.65 1877.05 22.29 188.2 1873.71 23.63 191.75 1870.36 22.55 195.3 1866.92 22.63 198.85 1863.44 24.82 202.4 1860 25.43 205.95 1856.45 23.57 209.5 1853 22.8 213.05 1849.45 21.93 216.6 1845.96 23.02 220.15 1842.45 22.44 223.7 1838.9 22.95 227.25 1835.34 23.08 230.8 1831.9 22.16 234.35 1828.38 -999 237.9 1824.99 22.58 241.45 1821.56 21.13 245 1818.1 24 248.55 1814.71 25.17 252.1 1811.2 24.1 255.65 1807.58 23.4 259.2 1803.91 -999 262.75 1800.26 24.85 266.3 1796.6 22.91 269.85 1792.96 23.99 273.4 1789.41 23.5 276.95 1785.75 21.99 280.5 1782.05 24.3 284.05 1778.35 24.44 287.6 1774.8 22.74 291.15 1771.25 21.95 294.7 1767.8 22.7 298.25 1764.46 22.67 301.8 1761 24.6 305.35 1757.42 22.29 308.9 1753.7 22.18 312.45 1749.89 22.49 316 1746.2 22.01 319.55 1742.44 21.89 323.1 1738.7 22.07 326.65 1734.98 22.42 330 1731.5 22.61 333.65 1727.68 -999 337.3 1723.97 23.51 340.95 1720.25 22.99 344.6 1716.6 22.55 348.25 1712.97 24.08 351.9 1709.4 22.46 355.55 1705.75 22.22 359.2 1702.1 -999 362.85 1698.45 23.29 366.5 1694.71 23.2 370.15 1690.94 22.95 373.8 1687.12 24.73 377.45 1683.46 24.9 381.1 1679.7 23.38 384.75 1676.06 24.53 388.4 1672.3 23.85 392.05 1668.55 -999 395.7 1664.81 24.14 399.35 1661.02 25.53 403 1657.3 25.29 406.03 1654.27 22.28 409.06 1651.24 23.08 412.09 1648.31 21.69 415.12 1645.29 22.36 418.15 1642.36 22.13