# Southwest Madagascar Coral Oxygen Isotope Data and SST Reconstruction from 1660-1994 #----------------------------------------------------------------------- # World Data Center for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # 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: http://www.hurricane.ncdc.noaa.gov/pls/paleox/f?p=519:1:::::P1_STUDY_ID:16438 # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/24611 # # Original_Source_URL: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/zinke2014-sr/zinke2014-sr-ifaty1.txt # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Climate Reconstructions #-------------------- # Contribution_Date # Date: 2014-05-08 #-------------------- # Title # Study_Name: Southwest Madagascar Coral Oxygen Isotope Data and SST Reconstruction from 1660-1994 #-------------------- # Investigators # Investigators: Zinke, J.; Loveday, B.; Reason, C.; Dullo, W.-C.; Kroon, D. #-------------------- # Description_and_Notes # Description: Oxygen isotope data from three cores of Porites sp. from SW Madagascar. 2 cores from Ifaty Reef 1 core from Tulear reef (Great Barrier Reef Tulear) Length: 1660-1994 Annual means March-February SST reconstruction coral composite of 3 cores: SST anomalies relative to 1961 to 1990 mean Coordinates GPS: Ifaty-4 23'08.578 S, 43'34.984 E (depth top colony at low tide 1.1m) Ifaty-1 23'09.435 S, 43'35.291 E (depth top colony at low tide 1.8m) Tulear-3 23'21.430 S, 43'37.169 E (depth top colony at low tide 0.6m) #-------------------- # Publication # Authors: Zinke, J.; Loveday, B.; Reason, C.; Dullo, W.-C.; Kroon, D. # Published_Date_or_Year: 2014 # Published_Title: Madagascar corals track sea surface temperature variability in the Agulhas Current core region over the past 334 years # Journal_Name: Scientific Reports # Volume: 4 # Edition: # Issue: 4393 # Pages: # DOI: 10.1038/srep04393 # Online_Resource: # Full_Citation: # Abstract: The Agulhas Current (AC) is the strongest western boundary current in the Southern Hemisphere and is key for weather and climate patterns, both regionally and globally. Its heat transfer into both the midlatitude South Indian Ocean and South Atlantic is of global significance. A new composite coral record (Ifaty and Tulear massive Porites corals), is linked to historical AC sea surface temperature (SST) instrumental data, showing robust correlations. The composite coral SST data start in 1660 and comprise 200 years more than the AC instrumental record. Numerical modelling exhibits that this new coral derived SST record is representative for the wider core region of the AC. AC SSTs variabilities show distinct cooling through the Little Ice Age and warming during the late 18th, 19th and 20th century, with significant decadal variability superimposed. Furthermore, the AC SSTs are teleconnected with the broad southern Indian and Atlantic Oceans, showing that the AC system ! is pivotal for inter ocean heat exchange south of Africa. #------------------ # Authors: Anderson, D.M., Tardif, R., Horlick, K., Erb, M.P., Hakim, G.J., Noone, D., Perkins, W.A., and E. Steig # Published_Date_or_Year: 2018 # Published_Title: Additions to the last millennium reanalysis multi-proxy database # Journal_Name: Data Science Journal # Volume: # Edition: # Issue: # Pages: # Report_Number: # DOI: # Online_Resource: # Full_Citation: Anderson, D.M., Tardif, R., Horlick, K., Erb, M.P., Hakim, G., J., Noone, D., Perkins, W.A., and E. Steig, submitted. Additions to the last millennium reanalysis multi-proxy database. Data Science Journal. # Abstract: Progress in paleoclimatology increasingly occurs via data syntheses. We describe additions to a collection prepared for use in paleoclimate state estimation, specifically the Last Millennium Reanalysis (LMR). The 2290 additional series include 2152 tree ring chronologies and 138 other series. They supplement the collection used previously and together form a database titled LMRdb 1.0.0. The additional data draws from lake core, ice core, coral, speleothem, and tree ring archives, using published data primarily from the NOAA Paleoclimatology archive and a set of tree ring width chronologies standardized from raw International Tree Ring Data Bank ring width series. In contrast to many previous paleo compilations, the data were not selected (screened) on the basis of their environmental correlation, multi-century length, or other attributes. The inclusion of proxies sensitive to moisture and other environmental variables expands their use in data assimilation. A preliminary calibration using linear regression with mean annual temperature reveals characteristics of the proxy series and their relationship to temperature, as well as the noise and error characteristics of the records. The additional records are structured as individual files in the NOAA Paleoclimatology format and archived at NOAA Paleoclimatology (Anderson et al. 2018) and will continue to be improved and expanded as part of the LMR Project. The additions represent a four-fold increase in the number of records available for assimilation, provide expanded geographic coverage, and add additional proxy variables. Applications include data assimilation, proxy system model development, and paleoclimate reconstruction using climate field reconstruction and other methods. #------------------ # Funding_Agency # Funding_Agency_Name: # Grant: #------------------ # Funding_Agency_Name: National Science Foundation # Grant:AGS-1304263 # Funding_Agency_Name: National Oceanic and Atmospheric Administration # Grant:NA14OAR4310176 #------------------ # Site_Information # Site_Name: Ifaty Reef, SW Madagascar # Location: Ocean>Indian Ocean>Madagascar # Country: Madagascar # Northernmost_Latitude: -23.142967 # Southernmost_Latitude: -23.357167 # Easternmost_Longitude: 43.619483 # Westernmost_Longitude: 43.583067 # Elevation: -1 m #------------------ # Data_Collection # Collection_Name: 14mada04a # Earliest_Year: 1660 # Most_Recent_Year: 1994 # Time_Unit: y_ad # Core_Length: # Notes: {"database":"LMR"} Composite d18O SST anomaly record from Ifaty-1, Ifaty-4 and Tulear-3 cores vs. 1961-90. #------------------ # Species # Species_Name: Porites sp. # Common_Name: #------------------ # Chronology: # # # # # # # # #---------------- # Variables # # Data variables follow that are preceded by "##" in columns one and two. # Data line variables format: Variables list, one per line, shortname-tab-longname-tab-longname components (9 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data) # ##age age, , ,years AD, , Corals and Sclerosponges, , ,N ##sst delta 18o reconstructed sea surface temperature anomaly,delta 18O,, degrees C,,Climate Reconstructions, normalized to 1961-90,,N # #---------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Values: NAN # age sst 1660 -0.10141 1661 -0.283006667 1662 0.131576667 1663 -0.288562917 1664 -0.6962 1665 -0.458006667 1666 -1.1416875 1667 -1.0066175 1668 -0.127102083 1669 0.735049583 1670 -0.40210375 1671 -0.784395833 1672 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