cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.25921/q8ak-kt17
title: NOAA/WDS Paleoclimatology - Jochner - Zermatt - PICE - ITRDB CHE463

description: Tree ring data from the International Tree Ring Data Bank and World Data Center for Paleoclimatology archives.  Most data sets include raw treering measurements (most are annual ring width, with some collections of earlywood or latewood width or wood density), plus chronologies (standardized growth indices for a site compiled from multiple treering samples). Reconstructions of climate variables are included with some of these data sets.  Each data type is stored in a separate data file; the data type is coded into the file name. For details please see: http://www.ncdc.noaa.gov/paleo/treeinfo.htmll
description: Elevation range: 2220 - 2520 m a.s.l., datasets were combined from PhD project of Matthias Jochner (ETH Zurich) and Master's thesis project of Jérémy Barbey (ETH Zurich)
DOI: 10.25921/qgmg-ck40
title: NOAA/WDS Paleoclimatology - Weber - OEF - PCAB - ITRDB CHE518

description: Tree ring data from the International Tree Ring Data Bank and World Data Center for Paleoclimatology archives.  Most data sets include raw treering measurements (most are annual ring width, with some collections of earlywood or latewood width or wood density), plus chronologies (standardized growth indices for a site compiled from multiple treering samples). Reconstructions of climate variables are included with some of these data sets.  Each data type is stored in a separate data file; the data type is coded into the file name. For details please see: http://www.ncdc.noaa.gov/paleo/treeinfo.htmll
DOI: 10.25921/q878-8540
title: NOAA/WDS Paleoclimatology - Anjohibe Geochemical Data from 1700 to -64 Cal Yr BP

description: The environmental impact of the early human inhabitants of Madagascar remains heavily debated. We present results from a study using two stalagmites collected from Anjohibe Cave in northwestern Madagascar to investigate the paleoecology and paleoclimate of northwestern Madagascar over the past 1800 years. Carbon stable isotopic data indicate a rapid, complete transformation from a flora dominated by C3 plants to a C4 grassland system. This transformation is well replicated in both stalagmites, occurred at 890 CE and was completed within one century. We infer that the change was the result of a dramatic increase in the use of fire to promote the growth of grass for cattle fodder. Further, stalagmite oxygen isotope ratios show no significant variation across the carbon isotope excursion, demonstrating that the landscape transformation was not related to changes in precipitation. Our study illustrates the profound impact early inhabitants had on the environment, and implies that forest loss was one trigger of megafaunal extinction.
description: Data contributed as part of SISAL v3 Global Speleothem Isotope and Trace Element Database (https://doi.org/10.25921/jajq-qg60). Notes from the SISAL database: Geology: Limestone near the base of the karst grading upwards into dolomite. A lower resolution record from stalagmite AB2 was published in Burns et al., 2016 but was superseded by Scroxton et al., 2017 - including an enhanced age model. \\ Entity AB2, AB3 (SISAL entity_id = 188, 187): Data shown in paper and online at NOAA are either raw values or corrected to aragonite. Data deposited in SISAL has been corrected to calcite, by the original author, to facilitate comparisons. Conversion made using -0.7 for d18O and -2.5 for d13C for 100% aragonite to calcite. \\ AB2 (entity_id = 188): Mixed mineralogy has been converted as a proportion of the mineralogies present, measured by XRD and XRF: 29% calcite between 90.5 (sample_id = 388296) and 105.1mm (sample_id = 388360) and 24% calcite between 1029.2 (sample_id = 388918) and 1096.2mm (sample_id = 388947).\\ Entity ABC-1(entity_id = 738): Dating material: aragonite vs. calcite was determined uding Mg/Ca and Sr/Ca ratios (higher Mg/Ca=calcite, higher Sr/Ca=aragonite), the date at 21.5mm depth is close to the boundary between the two, trace element analyses were not continued to the base of the sample where the age at 62mm depth was measured.
DOI: 10.15468/dl.6vxb5w
title: Occurrence Download

description: A dataset containing 789 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Stewartia ovata)",
 "StateProvince is one of (Alabama, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, Tennessee, Virginia)",
 "BasisOfRecord is Specimen"
 ]
}

 The dataset includes 789 records from 77 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0021267-251009101135966/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25921/qb82-d256
title: NOAA/WDS Paleoclimatology - Gillerot - Le Chenit - FASY - ITRDB CHE558

description: Tree ring data from the International Tree Ring Data Bank and World Data Center for Paleoclimatology archives.  Most data sets include raw treering measurements (most are annual ring width, with some collections of earlywood or latewood width or wood density), plus chronologies (standardized growth indices for a site compiled from multiple treering samples). Reconstructions of climate variables are included with some of these data sets.  Each data type is stored in a separate data file; the data type is coded into the file name. For details please see: http://www.ncdc.noaa.gov/paleo/treeinfo.htmll
DOI: 10.25921/qxtn-9247
title: NOAA/WDS Paleoclimatology - Weber - Bat - FASY - ITRDB CHE566

description: Tree ring data from the International Tree Ring Data Bank and World Data Center for Paleoclimatology archives.  Most data sets include raw treering measurements (most are annual ring width, with some collections of earlywood or latewood width or wood density), plus chronologies (standardized growth indices for a site compiled from multiple treering samples). Reconstructions of climate variables are included with some of these data sets.  Each data type is stored in a separate data file; the data type is coded into the file name. For details please see: http://www.ncdc.noaa.gov/paleo/treeinfo.htmll
DOI: 10.25921/q90f-kt10
title: NOAA/WDS Paleoclimatology - Weber - SIH - FASY - ITRDB CHE569

description: Tree ring data from the International Tree Ring Data Bank and World Data Center for Paleoclimatology archives.  Most data sets include raw treering measurements (most are annual ring width, with some collections of earlywood or latewood width or wood density), plus chronologies (standardized growth indices for a site compiled from multiple treering samples). Reconstructions of climate variables are included with some of these data sets.  Each data type is stored in a separate data file; the data type is coded into the file name. For details please see: http://www.ncdc.noaa.gov/paleo/treeinfo.htmll
DOI: 10.25921/qr5z-0290
title: NOAA/WDS Paleoclimatology - Weber - ROG - QURO - ITRDB CHE594

description: Tree ring data from the International Tree Ring Data Bank and World Data Center for Paleoclimatology archives.  Most data sets include raw treering measurements (most are annual ring width, with some collections of earlywood or latewood width or wood density), plus chronologies (standardized growth indices for a site compiled from multiple treering samples). Reconstructions of climate variables are included with some of these data sets.  Each data type is stored in a separate data file; the data type is coded into the file name. For details please see: http://www.ncdc.noaa.gov/paleo/treeinfo.htmll
DOI: 10.25921/qbeg-jq91
title: NOAA/WDS Paleoclimatology - Amedee Lighthouse - Paleothermometry Assessment

description: We perform replication tests using monthly variations in Sr/Ca and δ18O in four cores from three Porites lutea coral heads from New Caledonia to assess the reproducibility of coral-based climate records. Coral Sr/Ca (δ18O) records are well correlated to each other and to the instrumental SST record (1967–1992), especially in terms of differences in the mean values of 25-year SST records (∼0.2°C, Sr/Ca-SST; 0.6°C, δ18O-SST). The average error associated with the coral Sr/Ca-SST (δ18O-SST) of any particular month, season or year is ~0.8°C (1.1°C), 0.6°C (0.8°C) and 0.5°C (0.6°C), respectively. “Stacking” or averaging the individual proxy records reduces the error between observed and predicted SST, although the reduction is small for coral Sr/Ca. Excellent reproducibility among the coral proxies implies that reliable climate records can be generated from a single coral core and that coral Sr/Ca-SST records are not compromised, beyond the errors stated herein, by non-temperature-related biological effects.
description: Amédée Island, New Caledonia Sr/Ca, d18O, and d13C from 3 Porites lutea corals 1967-1992. Amédée Island: 22°29S, 166°28E, water depth <3 meters. Porites lutea cores were collected in 1992 by Fred Taylor, Jamie Austin, Yvan Join and John Butscher. The isotope data were analyzed at the University of South Florida College of Marine Science, on a Finnigan Delta Plus XL mass spectrometer and attached Kiel Carbonate Device with an analytical precision of 0.04 per mil for carbon and 0.08 per mil for oxygen (1 sigma) determined by repeated measurements of NBS 19 relative to VPDB. The elemental data were analyzed on a Perkin Elmer Optima 4300DV ICP-OES following the drift-correction methods of Schrag (1999). Analytical precision (1 sigma) for the Sr/Ca determinations is 0.2 % (0.018 mmol/mol), based on a laboratory standard solution of dissolved Porites lutea. Depth series were converted to time series using AnalySeries software (Paillard et al., 1996) to match Sr/Ca minima to SST maxima and vise versa. Stable isotopic and Sr/Ca determinations on samples from Cores 99-PAA, 92-PAC and 92-PAD were made at USF. Stable isotopic determinations on samples from core 92-PAA made at the University of Michigan. Sr/Ca determinations on samples from core 92-PAA made at the University of California-Santa Cruz. NOTE: These data have been updated by DeLong et al. 2012. Please see: https://www.ncei.noaa.gov/access/paleo-search/study/13035 (https://doi.org/10.25921/f93r-0r11)
DOI: 10.25921/qpbc-cy61
title: NOAA/WDS Paleoclimatology - White River, Arkansas 963-Year Streamflow Reconstruction

description: An average of three baldcypress (Taxodium distichum) ring-width chronologies was used to reconstruct total summer (JJA) mean daily flow of the White River at Clarendon, Arkansas, for years 1023-1985. A quadratic transformation of the tree-ring data accounted for 68% (R2 adjusted for degrees of freedom lost) when regressed against total summer flow 1931-1985. The distribution of the quadratic reconstruction matched the gauged distribution much better than a simple linear model which only accounted for 62% of the variance. The model was validated by comparing regression estimates against independent data. Years with summer flow below the 25th percentile occur nonrandomly, i.e., they tend to cluster, in both the reconstructed and gauged data. Hydrologic regimes have apparently varied considerably in the past on annual to century time-scales, with extended dry and wet periods that exceeded anything in the modern record. The frequency of both wet and dry extremes has varied considerably over the last millennium. The eleventh through thirteenth centuries were not analysed due to reduced replication, but the well-replicated fourteenth and twentieth centuries both have large numbers of extremes. The twentieth century appears to have more extreme low flows than the previous centuries and also to have a large number of high flows. The practical consequences for society of variation in extremes and persistence of low flows may be considerable. Climatic change or anthropogenic changes to the watershed (e.g., widespread upland clearing for agriculture and logging of bottomland forests) may be responsible for the change in hydrologic regime during the twentieth century. 
description: Reconstructed June/July/August streamflow, White River, AR (cubic meter/second, divided by 1000). Std dev for 1023-1299 CE was reduced to match std dev for 1300-1985 CE by multiplying that part of series (with the 1023-1299 CE mean subtracted) by 699/891, then adding back the mean. This is the series that was published. The transfer function was: YHATsubt = 474.3 + 1160.8 (Xsubt)Squared, where: YHATsubt is estimated JJA total flow in m cubed /sec, /1000 for yr t; Xsubt is the average of 3 baldcypress chronologies (Allred Lake, MO 36d34m N, 90d29m W; Black Swamp, AR 35d09m N, 91d18m W;  Bayou deView, AR 34d57m N, 91d13m W). Observed JJA streamflow data was supplied by the U.S. Army Corps of Engineers Memphis District (B-202 Clifford Davis Federal Bldg, Memphis, TN 38103-1854). Original units were feet cubed /sec. See M.K. Cleaveland and D.W. Stahle, 1989, Tree ring analysis of surplus and deficit runoff in the White River, Arkansas. Water Resources Research 25(6): 1391-1401 for the complete monthly and annual flow data 1900-1980, homogeneity testing, etc.
DOI: 10.25921/qpq4-vb40
title: NOAA/WDS Paleoclimatology - Esper - Eiby KNE02 - PISY - ITRDB NOR046

description: Tree ring data from the International Tree Ring Data Bank and World Data Center for Paleoclimatology archives.  Most data sets include raw treering measurements (most are annual ring width, with some collections of earlywood or latewood width or wood density), plus chronologies (standardized growth indices for a site compiled from multiple treering samples). Reconstructions of climate variables are included with some of these data sets.  Each data type is stored in a separate data file; the data type is coded into the file name. For details please see: http://www.ncdc.noaa.gov/paleo/treeinfo.htmll
description: SE-Exp. Down by the lake
DOI: 10.25921/qv4f-4q90
title: NOAA/WDS Paleoclimatology - Margolis fire data from Cerro de la Olla East, Northern New Mexico - IMPD USCDE002

description: Records of past fire occurrence from tree rings, charcoal found in lake sediments, and other proxies. Parameter keywords describe what was measured in this data set.  Additional summary information can be found in the abstracts of papers listed in the data set citations.  Additional information on the International Multiproxy Database (IMPD) data set procedures are also available.

description: This dataset was contributed as part of the North American Tree-ring Fire Scar Synthesis (NAFSS) project (https://www.ncei.noaa.gov/access/paleo-search/study/34853). Data were contributed to the project from the original data generators.

Sample Storage Location: Laboratory of Tree-Ring Research Archive
Dating Method: crossdated
Related ITRDB_Chronology: Not Applicable

Fire scar data from this site are available in FHX2 format at:
  https://www.ncei.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/uscde002.fhx
along with associated metadata at:
  https://www.ncei.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/uscde002-noaa.txt

Extended supplemental information file descriptions (where applicable):
   uscde002-CDE.csv: TreeID, species, tree condition, latitude, longitude, and sample date
DOI: 10.25921/qtfk-gh84
title: NOAA/WDS Paleoclimatology - Cesare Battisti Cave Geochemical Data from 127700 to 120300 Cal Yr BP

description: Thermophilisation is the response of plants communities in mountainous areas to increasing temperatures, causing an upward migration of warm-adapted (thermophilic) species and consequently, the timberline. This greening, associated with warming, causes enhanced evapotranspiration that leads to intensification of the hydrological cycle, which is recorded by hydroclimate-sensitive archives, such as stalagmites and flowstones formed in caves. Understanding how hydroclimate manifests at high altitudes is important for predicting future water resources of many regions of Europe that rely on glaciers and snow accumulation. Using proxy data from three coeval speleothems (stalagmites and flowstone) from the Italian Alps, we reconstructed both the ecosystem and hydrological setting during the Last Interglacial (LIG); a warm period that may provide an analogue to a near-future climate scenario. Our speleothem proxy data, including calcite fabrics and the stable isotopes of calcite and fluid inclusions, indicate a +4.3 ± 1.6 °C temperature anomaly at ~2000 m a.s.l. for the peak LIG, with respect to present-day values (1961–1990). This anomaly is significantly higher than any low-altitude reconstructions for the LIG in Europe, implying elevation-dependent warming during the LIG. The enhanced warming at high altitudes must be accounted for when considering future climate adaption strategies in sensitive mountainous regions.
description: Data contributed as part of SISAL v3 Global Speleothem Isotope and Trace Element Database (https://doi.org/10.25921/jajq-qg60).
DOI: 10.25921/q2sz-8h74
title: NOAA/WDS Paleoclimatology - Tityana Cave Geochemical Data from 3900 to 1600 Cal Yr BP

description: The present study documents the monsoon precipitation variability spanned ~ 2500 years, between 4.0 and 1.6 ka BP (before 1950 AD), from the Central Lesser Himalaya, India, using δ18O measurements of Tityana cave stalagmite (hereafter referred as TC1). At present, the cave receives precipitation from both Indian Summer Monsoon (ISM) and Western Disturbances (WDs). The δ18O variation between − 8.04 and − 10.46‰ through growth axis of the TC1 and five 14C AMS dates (due to large age uncertainty by 230Th/U method) have allowed us to identify the mid to late Holocene multi-decadal to centennial scale climatic oscillations. The higher δ18O values indicate the weakening of the monsoon precipitation, while the lighter values represent the stronger monsoon precipitation strength. Based on the fluctuations in δ18O values, three distinct phases of the precipitation variability are distinguished as, declined/decreased precipitation between ~ 4.0 and 3.4 ka BP with peak aridity around ~ 3.4 ka BP, followed by slightly improved conditions from ~ 3.4 to ~ 2.7 ka BP. Subsequently, the climate was reduced from ~ 2.7 ka BP onwards until the end of stalagmite growth, around ~ 1.6 ka BP with spikes of two major drought events centred at ~ 1.9 and ~ 1.6 ka BP. In general, the droughts, centred at ~ 3.4, ~ 1.9 and ~ 1.6 ka BP, are characterized by abrupt drop (from − 8.12 to − 8.04‰) in the δ18O values and point to the weakening of the monsoon. One of the major drought events at ~ 3.4 ka BP can be correlated with the collapse of the Indus valley civilization in the NW India. A close correspondence of the TC1 data set with other WDs influenced regimes likely indicates a relative impact of mid-latitude WDs after transition of the mid-late Holocene around 3.5–3.4 ka BP.
description: Data contributed as part of SISAL v3 Global Speleothem Isotope and Trace Element Database (https://doi.org/10.25921/jajq-qg60).
DOI: 10.25921/q6wd-5k64
title: NOAA/WDS Paleoclimatology - Lake GTH90, Northern Arctic Foothills, Alaska: Geochemical and Isotope Measurements Spanning the Past 3500 Years

description: Amplified warming in the Arctic has resulted in reduced sea-ice extent, which can impact regional climate dynamics. Elucidating temperature and moisture variability in the past in response to changing temperatures and sea-ice conditions can offer insight into how anthropogenic climate change may impact Arctic areas such as the Alaskan North Slope in the future. We contribute a new high-resolution record of integrated air temperature and precipitation variability from Lake GTH90 located on the Alaskan North Slope. This new record is based on the isotopic composition of chitin from lake sediments, and adds to a growing suite of Late Holocene climate records in northern Alaska. An overall decrease in d18O values from 3.5 ka to present at Lake GTH90 captures Neoglacial cooling associated with millennial-scale decrease in summer insolation. The highest and most variable d18O values occur between 3.5 and 2.6 ka and the lowest values are centered around 0.5 ka, suggesting that this record captures Little Ice Age cooling of up to 2°C. However, our record shows that on centennial timescales, climatic variables beyond air temperature likely contributed to the variability of d18O values at Lake GTH90. Variability in our record is consistent with temporal variability in sea-ice extent in the Arctic Ocean in the late Holocene, suggesting that periods of high sea-ice extent inhibited Arctic moisture sources and long-distance moisture transport from the North Pacific became dominant. In addition, shifts in the strength and position of the Aleutian Low contributed to the changes in the seasonality of precipitation in this region.
description: This dataset includes all variables measured on sediment core material from lake GTH90: chitin d18O, sediment d13C, sediment bulk density, elemental abundances from x-ray flourescence , and magnetic susceptibility. Other variables included in this dataset are d18O and d2H of modern water used to generate the RMWL (precipitation samples), LEL (surface water samples), and OIPC (modelled values) for our study area. Core lengths are .95 (U1) and .82 (U2) m
     Provided Keywords: Paleolimnology, Arctic, chitin, d18O, d13C, XRF, magnetic susceptibility
DOI: 10.25921/qjg1-6q66
title: NOAA/WDS Paleoclimatology - Esper - Auersberg, Rhön EDR01 - PCAB - ITRDB DEU447

description: Tree ring data from the International Tree Ring Data Bank and World Data Center for Paleoclimatology archives.  Most data sets include raw treering measurements (most are annual ring width, with some collections of earlywood or latewood width or wood density), plus chronologies (standardized growth indices for a site compiled from multiple treering samples). Reconstructions of climate variables are included with some of these data sets.  Each data type is stored in a separate data file; the data type is coded into the file name. For details please see: http://www.ncdc.noaa.gov/paleo/treeinfo.htmll
DOI: 10.25921/q3ry-wk81
title: NOAA/WDS Paleoclimatology - Palco Cave Geochemical Data from 6300 to -62 Cal Yr BP

description: The connection between climatic change and social response is complex because change articulates a number of inter-related factors. Human decisions are filtered by social buffers – including social memory, risk perception, and cultural priorities – and the rate and scale of climate change is usually much larger than the scale of human decision-making. In this article, we provide information on climate change based on precisely dated speleothems with the response evident in archaeological sites that have radiocarbon date ranges within the same time frame. A stalagmite recovered from within the catchment area for aquifer recharge of the Pre-Arawak site of Angostura in Barceloneta, Puerto Rico, shows that a significant wet period occurred between 3.9 and 3.1 ka (primarily centered at 3.5 ka). We investigate the effect that this increase in precipitation had on the earliest occupations on the island in the context of palaeoenvironmental, geoarchaeological, and archaeological records from Angostura, Maruca, and Paso del Indio. Our analysis suggests the presence of two different adaptation strategies: settlement relocation and microlandscape modification. Our study concludes that the social response to change cannot be seen as monolithic given that human behavior, even within the same period, addresses the needs of individual groups with different priorities. This multiplicity of responses can indeed enhance resilience as social support can continue through alliances and exchanges, strengthening social bonds that can help buffer catastrophes. The results can help shed light on the range of adaptation strategies to change encompassed within the manifestations of social resilience or vulnerability.
description: Data contributed as part of SISAL v3 Global Speleothem Isotope and Trace Element Database (https://doi.org/10.25921/jajq-qg60). Notes from the SISAL database: Entity PA-2b (SISAL entity_id = 684): Isotope samples at 127 and 127.5mm removed because of their proximity to the hiatus at 127.25 mm.