cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.25921/dsge-2x80
title: NOAA/WDS Paleoclimatology - Arnold - Sydenham House - QUSP - ITRDB BRIT093

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: Ring width series of 26 samples represented by site sequence SYDMSQ01 spanning period AD 1741-2013. NOAA Template Raw Measurements file added 2020-03-09. July 2024: Elevation added by WDS-Paleo using get_elev_point() from the elevatr R package with the AWS Terrain Tiles (aws) and WGS 84 reference frame.
DOI: 10.25921/dns9-y690
title: NOAA/WDS Paleoclimatology - Saladyga fire data from Tar Run, Northeast Pennsylvania (Schuylkill County) - IMPD USTAR001

description: Placed-based fire management planning that considers historical patterns and processes as well as contemporary local knowledge is recognized as an alternative to broad-scale, regional approaches. In this paper, we used dendrochronology and an online survey to assess historical trends and contemporary perceptions of wildfire, respectively, in the fire-prone anthracite coal region of northeastern Pennsylvania. We developed an annual index of fire occurrence and extent from 216 fire-scarred pitch pine (Pinus rigida) distributed across 9 ridgetop study sites for the period 1900–2016. In addition, we collected survey responses from area residents regarding contemporary perceptions of wildfire hazards and management. Our results show that 20th century wildfire activity was not associated with drought, but closely followed fluctuations in the anthracite coal industry, with increased fire occurrence and extent associated with times of severe job losses. Less extensive wildfire continues to occur frequently, with area residents recognizing the need for fuel management (i.e., prescribed fire) and an increase in resources allocated to wildfire prevention and management as well as trash disposal and recycling programs. Our research represents one example of an integrated approach to informing sustainable fire management that considers the link between historical patterns and contemporary perceptions.
description: TAR.FHX	removed from study title
DOI: 10.25921/d2pw-qm53
title: NOAA/WDS Paleoclimatology - El Nino-Southern Oscillation Index 1,000 Year Reconstruction

description: The climate of the Southern Hemisphere (SH) is strongly influenced by variations in the El Nino-Southern Oscillation (ENSO) and the Southern Annular Mode (SAM). Because of the limited length of instrumental records in most parts of the SH, very little is known about the relationship between these two key modes of variability over time. Using proxy-based reconstructions and last-millennium climate model simulations, we find that ENSO and SAM indices are mostly negatively correlated over the past millennium. Pseudo-proxy experiments indicate that currently available proxy records are able to reliably capture ENSO-SAM relationships back to at least 1600 CE. Palaeoclimate reconstructions show mostly negative correlations back to about 1400 CE. An ensemble of last-millennium climate model simulations confirms this negative correlation, showing a stable correlation of approximately -0.3. Despite this generally negative relationship we do find intermittent periods of positive ENSO-SAM correlations in individual model simulations and in the palaeoclimate reconstructions. We do not find evidence that these relationship fluctuations are caused by exogenous forcing nor by a consistent climate pattern. However, we do find evidence that strong negative correlations are associated with strong positive (negative) anomalies in the Interdecadal Pacific Oscillation and the Amundsen Sea Low during periods when SAM and ENSO indices are of opposite (equal) sign.
description: Proxy data and reconstructions of the El Nino-Southern Oscillation (ENSO) Nino3.4 index for the past 1,000 years. Previously published Southern Annular Mode (SAM) reconstructions are available at: https://www.ncdc.noaa.gov/paleo/study/23130
DOI: 10.25921/d5s7-xk80
title: NOAA/WDS Paleoclimatology - Eclipse Icefield 2002 Cores 1,000 Year Major Ions and Isotope Data

description: We previously reported a record of regionally significant volcanic eruptions in the North Pacific using an ice core from Eclipse Icefield (St. Elias Mountains, Yukon, Canada). The acquisition of two new ice cores from Eclipse Icefield, along with the previously available Eclipse Icefield and Mount Logan Northwest Col ice cores, allows us to extend our record of North Pacific volcanism to 550 years before present using a suite of four ice cores spanning an elevation range of 3-5 km. Comparison of volcanic sulfate flux records demonstrates that the results are highly reproducible, especially for the largest eruptions such as Katmai (A.D. 1912). Correlation of volcanic sulfate signals with historically documented eruptions indicates that at least one-third of the eruptions recorded in St. Elias ice cores are from Alaskan and Kamchatkan volcanoes. Although there are several moderately large (volcanic explosivity index (VEI) = 4) eruptions recorded in only one core from Eclipse Icefield, the use of multiple cores provides signals in at least one core from all known VEI = 4 eruptions in Alaska and Kamchatka since A.D. 1829. Tephrochronological evidence from the Eclipse ice cores documents eruptions in Alaska (Westdahl, Redoubt, Trident, and Katmai), Kamchatka (Avachinsky, Kliuchevoskoi, and Ksudach), and Iceland (Hekla). Several unidentified tephra-bearing horizons, with available geochemical evidence suggesting Alaskan and Kamchatkan sources, were also found. We present a reconstruction of annual volcanic sulfate loading for the North Pacific troposphere based on our ice core data, and we provide a detailed assessment of the atmospheric and climatic effects of the Katmai eruption.
description: Major ions (Na, NH4, K, Mg, Ca, Cl, NO3, SO4, and C2O4) and water isotope (d18O, dD) data from Eclipse 2002 ice cores 2 and 3.
DOI: 10.25921/dyfb-me97
title: NOAA/WDS Paleoclimatology - Toca da Boa Vista Cave, NE Brazil Younger Dryas Isotope and Elements Data

description: The abrupt climate event Younger Dryas (YD) has been extensively studied; however, its structure is still poorly understood. Climate in northeastern Brazil is very sensitive to the latitudinal position of the intertropical convergence zone (ITCZ) associated with abrupt climate change in the Atlantic. Here, we report changes in the ITCZ position within the YD by using precise speleothem multiproxy records from northeastern Brazil. We provide evidence for a gradual northward migration of the ITCZ preceding poleward shifts of the westerlies and the polar front in northern high latitudes within the YD. This can be attributed to gradual increase in atmospheric CO2 concentration as a consequence of the weakening Atlantic Meridional Overturning Circulation (AMOC). We suggest that a persistent increase in atmospheric CO2 might have triggered a resumption of the AMOC and reorganization of the atmosphere circulation in the Atlantic during the mid-YD.
description: Stable isotope and trace elements records of stalagmite TBV13 from Toca da Boa Vista (TBV) Cave, Northeast Brazil, over the Younger Dryas interval.
DOI: 10.25921/dwh3-kp57
title: NOAA/WDS Paleoclimatology - Axelson - Safsnas, Dalarna - PISY - ITRDB SWED336

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: Samples collected for various history-related reasons during the last two decades, and grouped to represent two different altitudes (Grangarde [SWED335] 155-250m, and Safsnas [SWED336] 300-480m). The trees react on T and P signals in a complex way in this area; the lower altitude group correlates better towards southern Scandinavia and the higher better towards north. NOAA Template Raw Measurements file added 2021-02-22.
DOI: 10.15468/dl.ub3n22
title: Occurrence Download

description: A dataset containing 2 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Carthamus tinctorius",
 "Country is Uzbekistan",
 "HasCoordinate is true"
 ]
}

 The dataset includes 2 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0006388-251009101135966/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25921/dv8p-8349
title: NOAA/WDS Paleoclimatology - Woodhouse - Sheep Mountain - PIAR - ITRDB CO690

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: NOAA Template Raw Measurements file added 2022-04-04.
DOI: 10.25921/dgv0-0d46
title: NOAA/WDS Paleoclimatology - Stefanuk - Algonquin Highlands AL06 - ACSH - ITRDB CANA620

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: Sample plots were circular with a radius of 75m, located within sugar maple dominated stands in protected areas within each region including Algonquin Provincial Park, Frontenac Provincial Park, Charleston Lake Provincial Park and the Queen's University Biological Station. NOAA Template Raw Measurements file added 2021-02-22.
DOI: 10.25921/dvyz-fs11
title: NOAA/WDS Paleoclimatology - River Murray Mouth Region, South Australia Modern-MIS 7 Foraminifer AAR Data

description: The identification and correlation of a sequence of Pleistocene beach barriers located within the northern Coorong Coastal Plain, South Australia, is made difficult by long-term subsidence and extensive reworking. Associated shell beds, to all but the last interglacial barrier, are subsurface and not readily accessible. The whole-rock amino acid racemization method was found to be unsuitable for distinguishing age differences of the individual barriers due to the low calcium carbonate content of the sediments, concerns for the leaching or contamination as a result of the comminuted nature of the shelly component, and the potentially high content of reworked sediment. These difficulties prompted an investigation into the applicability of AAR analysis of single foraminifera tests to ascertain whether the relative age of beach barriers could be determined and whether sediment contribution from antecedent barriers could be identified. Foraminifera tests of multiple genera (including Cibicides corticatus and Rosalina bradyi) from numerous modern depositional environments were analyzed to establish aminozones of aspartic acid and glutamic acid D/L values representative of modern/Holocene foraminifera and to assess natural variability of Holocene D/L values between depositional settings. Tests of Lamellodiscorbis dimidiatus, common in the Pleistocene barriers, were analyzed from MIS 5 and MIS 7 sediments and aminozones identified, allowing correlation of non-contiguous barrier features and the identification of reworked foraminifera. Rejection criteria removed, on average, between 25 and 30% of analytical results. The Holocene aminozone for every genus analyzed falls within the same general constraint: D/L values less than 0.40 for aspartic acid and less than 0.20 for glutamic acid. The D/L values of approximately 15% of foraminifera from the modern sediments exceed the Holocene aminozone constraint and the tests are considered reworked. The range of D/L values representative of each interglacial aminozone decreases with age, reflecting the slowing rate of amino acid racemization with time. Pleistocene sediments are found to have a higher percentage of reworked tests. Thermoluminescence dating of the Pleistocene successions was used to evaluate the AAR results. This work illustrates that foraminifera tests are surprisingly robust and can survive potentially multiple phases of deposition and reworking.
description: Amino acid racemization (AAR) data from individual foraminifer collected at 12 sites near the River Murray mouth, South Australia, with ages from modern to MIS7
DOI: 10.25921/dbmj-1277
title: NOAA/WDS Paleoclimatology - Park Range, Colorado 2,500 Year Precipitation and Temperature Reconstructions

description: We employed the modern analog technique to quantitatively reconstruct temperature and precipitation over the past 2500 yr based on fossil pollen records from six high-elevation lakes in northern Colorado. Reconstructed annual temperatures for the study area did not deviate significantly from modern over the past 2500 yr despite hemispheric expressions of Medieval Climate Anomaly warmth and Little Ice Age cooling. Annual precipitation, however, shifted from lower than modern rates from 2500 to 1000 cal yr BP to higher than modern rates after 1000 cal yr BP, a greater than 100 mm increase in precipitation. Winter precipitation accounts for the majority of the change in annual precipitation, while summer precipitation rates did not change significantly over the past 2500 yr. The large change in winter precipitation rates from the first to second millennium of the Common Era is inferred from a shift in fossil pollen assemblages dominated by subalpine conifers, which have southern sites as modern analogs, to assemblages representing open subalpine vegetation with abundant Artemisia spp. (sagebrush), which have more northern modern analogs. The change helps to explain regional increases in lake levels and shifts in some isotopic and tree-ring data sets, highlighting the risk of large reductions in snowpack and water supplies in the Intermountain West.
description: Reconstructed precipitation (winter, summer, and annual) and annual temperature for six alpine lakes and the Park Range median, based on fossil pollen data, for the past 2,500 years
DOI: 10.25921/dmyw-6v26
title: NOAA/WDS Paleoclimatology - Maxwell - Donaldson Woods - LITU - ITRDB IN008

description: Understanding the historic variability in the hydroclimate provides important information on possible extreme dry or wet periods that in turn inform water management plans. Tree rings have long provided historical context of hydroclimate variability of the U.S. However, the tree-ring network used to create these countrywide gridded reconstructions is sparse in certain locations, such as the Midwest. Here, we increase (n = 20) the spatial resolution of the tree-ring network in southern Indiana and compare a summer (June-August) Palmer Drought Severity Index (PDSI) reconstruction to existing gridded reconstructions of PDSI for this region. We find both droughts and pluvials that were previously unknown that rival the most intense PDSI values during the instrumental period. Additionally, historical drought occurred in Indiana that eclipsed instrumental conditions with regard to severity and duration. During the period 1962-2004 CE, we find that teleconnections of drought conditions through the Atlantic Meridional Overturning Circulation have a strong influence (r = -0.60, p < 0.01) on secondary tree growth in this region for the late spring-early summer season. These findings highlight the importance of continuing to increase the spatial resolution of the tree-ring network used to infer past climate dynamics to capture the sub-regional spatial variability. Increasing the spatial resolution of the tree-ring network for a given region can better identify sub-regional variability, improve the accuracy of regional tree-ring PDSI reconstructions, and provide better information for climatic teleconnections.
description: Eastern Deciduous Forest, Climate response, Palmer Drought Severity Index. NOAA Template Raw Measurements file added 2020-09-03.
DOI: 10.25921/dkb9-ex61
title: NOAA/WDS Paleoclimatology - Harley - Lilly-Dickey Woods - QUVE - ITRDB IN021

description: Understanding the historic variability in the hydroclimate provides important information on possible extreme dry or wet periods that in turn inform water management plans. Tree rings have long provided historical context of hydroclimate variability of the U.S. However, the tree-ring network used to create these countrywide gridded reconstructions is sparse in certain locations, such as the Midwest. Here, we increase (n = 20) the spatial resolution of the tree-ring network in southern Indiana and compare a summer (June-August) Palmer Drought Severity Index (PDSI) reconstruction to existing gridded reconstructions of PDSI for this region. We find both droughts and pluvials that were previously unknown that rival the most intense PDSI values during the instrumental period. Additionally, historical drought occurred in Indiana that eclipsed instrumental conditions with regard to severity and duration. During the period 1962-2004 CE, we find that teleconnections of drought conditions through the Atlantic Meridional Overturning Circulation have a strong influence (r = -0.60, p < 0.01) on secondary tree growth in this region for the late spring-early summer season. These findings highlight the importance of continuing to increase the spatial resolution of the tree-ring network used to infer past climate dynamics to capture the sub-regional spatial variability. Increasing the spatial resolution of the tree-ring network for a given region can better identify sub-regional variability, improve the accuracy of regional tree-ring PDSI reconstructions, and provide better information for climatic teleconnections.
description: Eastern Deciduous Forest, Climate response, Palmer Drought Severity Index NOAA Template Raw Measurements file added 2020-09-03.
DOI: 10.25921/dqy5-0t09
title: NOAA/WDS Paleoclimatology - Midwestern USA 65 Year Tree Ring d13C and Water Use Efficiency Data

description: Several important environmental influences of tree growth and carbon sequestration have changed over the past several decades in eastern North America, specifically, more frequent pluvial conditions, increased carbon dioxide (CO2) concentrations, and decreased acidic deposition. These factors could lead to changes in the relationship between tree growth and water availability, and perhaps even decouple the two, having large implications on how future climate change will impact forest productivity and carbon sequestration. Here, we examine the concurrent influence of the climatic water balance (precipitation minus potential evapotranspiration), CO2 concentrations, and sulfate and nitrogen deposition on radial tree growth, carbon isotopes, and intrinsic water-use efficiency (iWUE) for several hardwood tree species in the Midwestern United States. We found that when considering the simultaneous influence of these factors, the climatic water balance is the dominant influence on annual growth. Therefore, the recent pluvial period is the primary cause of the weakening relationship between radial growth and water availability. Even during pluvial periods, water availability is the primary control on growth, with increasing CO2 concentrations and decreased SO4 deposition being secondary factors. Importantly, the weakening in the climate-growth relationship is species specific, with Acer species having stable relationships with the climatic water balance, Liriodendron tulipifera showing a strengthening relationship, and Quercus species and Populus grandidentata exhibiting weakening. Thus, interannual variations in soil moisture unevenly impact tree growth and carbon sequestration. Our findings suggest that, despite recent pluvial conditions, increasing CO2 concentrations and decreasing acidic deposition have not buffered the impact of water availability on tree growth and carbon sequestration.
description: Hardwood tree ring carbon isotope (d13C) data from 3 midwestern USA locations, plus Intrinsic Water-Use Efficiency (iWUE) data. Tree ring width data from this study are archived in the International Tree Ring Data Bank, Site Codes MO079, MO080, IN024, IN025, IN026, MI026, MI027, MI028. Provided Keywords: Eastern Deciduous Forest, Climate response, SO4, N, CO2, Climatic Water Balance
DOI: 10.25921/de2r-b132
title: NOAA/WDS Paleoclimatology - Keylong, India 860 Year Tree-Ring Oxygen Isotope Data

description: Glacier response analyses in High Mountain Asia have revealed that the glaciers from the Karakoram region were in balance or thickening while most from the other regions were thinning, the "Karakoram anomaly." It is, however, not clear whether this contrasting glacier response in High Mountain Asia is the result of regionally varying climate trends. Here, we give evidence for regionally varying climate trends by presenting a contrasting centennial-scale variations of oxygen isotope composition (d18O) of juniper trees from the Indian Himalayan region (present study) and Karakoram. The persistence of contrasting d18O trends in the two regions over the past millennium indicates that regionally contrasting climate trends are a natural phenomenon. Regionally distinct hydroclimatic trends revealed here can explain the anomalous glacier mass balance trends in the Karakoram region and hence the "Karakoram anomaly."
description: Oxygen isotope (d18O) data from tree rings collected in Keylong, Lahaul-Spiti, India, for 1146-2006 CE. Provided Keywords: Karakoram Anomaly; Little Ice Age