cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.25921/yk7y-rm74
title: NOAA/WDS Paleoclimatology - Southern Great Barrier Reef, Porites spp. luminescence 1921-2011 CE

description: The Pacific Decadal Oscillation (PDO) is a large-scale climatic phenomenon modulating ocean-atmosphere variability on decadal time scales. While precipitation and river flow variability in the Great Barrier Reef (GBR) catchments are sensitive to PDO phases, the extent to which the PDO influences coral reefs is poorly understood. Here, six Porites coral cores were used to produce a composite record of coral luminescence variability (runoff proxy) and identify drivers of terrestrial influence on the Keppel reefs, southern GBR. We found that coral skeletal luminescence effectively captured seasonal, inter-annual and decadal variability of river discharge and rainfall from the Fitzroy River catchment. Most importantly, although the influence of El Niño-Southern Oscillation (ENSO) events was evident in the luminescence records, the variability in the coral luminescence composite record was significantly explained by the PDO. Negative luminescence anomalies (reduced runoff) were associated with El Niño years during positive PDO phases while positive luminescence anomalies (increased runoff) coincided with strong/moderate La Niña years during negative PDO phases. This study provides clear evidence that not only ENSO but also the PDO have significantly affected runoff regimes at the Keppel reefs for at least a century, and suggests that upcoming hydrological disturbances and ecological responses in the southern GBR region will be mediated by the future evolution of these sources of climate variability.
description: Contributed as part of the Great Barrier Reef Coral Skeletal Records Database (GBRCD).
    Provided Keywords: Great Barrier Reef, coral luminescence, El Nino-Southern Oscillation, Pacific Decadal Oscillation, river discharge
DOI: 10.25921/yens-ja08
title: NOAA/WDS Paleoclimatology - O'Connor fire data from Pinalenos_J21, Southeast Arizona - IMPD USJ21001

description: In recent decades fire size and severity have been increasing in high elevation forests of the American Southwest. Ecological outcomes of these increases are difficult to gauge without an historical context for the role of fire in these systems prior to interruption by Euro-American land uses. Across the gradient of forest types in the Pinaleño Mountains, a Sky Island system in southeast Arizona that experienced two relatively large high-severity fires in the last two decades, we compared fire characteristics and climate associations before and after the onset of fire exclusion to determine the degree of similarity between past and recent fires. We use a gridded fire scar and demography sampling network to reconstruct spatially explicit estimates of fire extent and burn severity, as well as climate associations of fires from individual site to landscape scales from 1640 to 2008 C.E. We found that patterns of fire frequency, size, and severity were relatively stable for at least several centuries prior to 1880. A combination of livestock grazing and active fire suppression after circa 1880 led to (1) a significant reduction in fire spread but not fire ignition, (2) a conversion of more than 80% of the landscape from a frequent, low to mixed-severity fire regime to an infrequent mixed to high-severity fire regime, and (3) an increase in fuel continuity within a mid-elevation zone of dry mixed-conifer forest, resulting in increased opportunities for surface and crown fire spread into higher elevation mesic forests. The two most recent fires affecting mesic forests were associated with drought and temperature conditions that were not exceptional in the historical record but that resulted in a relative proportion of high burn severity up to four times that of previous large fires. The ecological effects of these recent fires appear to be more severe than any fire in the reconstructed period, casting uncertainty upon the recovery of historical species composition in high-severity burn patches. Significant changes to the spatial pattern, frequency, and climate associations of spreading fires after 1880 suggest that limits to fuel loading and fuel connectivity sustained by frequent fire have been removed. Coinciding factors of high fuel continuity and fuel loading, projected lengthening of the fire season, and increased variability in seasonal precipitation suggest that large high-severity fires, especially in mixed-conifer forests, will become the predominant fire type without aggressive actions to reduce fuel continuity and restore fire-resilient forest structure and species composition.
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.
DOI: 10.25921/ywac-vp77
title: NOAA/WDS Paleoclimatology - Battles - Blodgett Forest Research Station - ABCO - ITRDB CA737

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: The US Joint Fire Sciences Program originally funded this project and also this Special Feature. Previous support from the California Fourth Climate Change Assessment, the McIntire-Stennis Program, the California Greenhouse Gas Reduction Fund, the UC Office of the President's UC Laboratory Fees Research Program, and Smart Practices and Architecture for Prescribed Fires in California was also important to keeping this long-term project active over the last 20-years.
DOI: 10.25921/ycrb-pk26
title: NOAA/WDS Paleoclimatology - Hoq Cave Geochemical Data from 9200 to -56 Cal Yr BP

description: Four stalagmites covering the last 7.0 ka were sampled on Socotra, an island in the northern Indian Ocean to investigate the evolution of the northeast Indian Ocean Monsoon (IOM) since the mid Holocene. On Socotra, rain is delivered at the start of the southwest IOM in May–June and at the start of the northeast IOM from September to December. The Haggeher Mountains act as a barrier forcing precipitation brought by the northeast winds to fall preferentially on the eastern side of the island, where the studied caves are located. δ18O and δ13C and Mg/Ca and Sr/Ca signals in the stalagmites reflect precipitation amounts brought by the northeast winds. For stalagmite STM6, this amount effect is amplified by kinetic effects during calcite deposition. Combined interpretation of the stalagmites' signals suggest a weakening of the northeast precipitation between 6.0 and 3.8 ka. After 3.8 ka precipitation intensities remain constant with two superimposed drier periods, between 0 and 0.6 ka and from 2.2 to 3.8 ka. No link can be established with Greenland ice cores and with the summer IOM variability.
In contrast to the stable northeast rainy season suggested by the records in this study, speleothem records from western Socotra indicate a wettening of the southwest rainy season on Socotra after 4.4 ka. The local wettening of western Socotra could relate to a more southerly path (more over the Indian Ocean) taken by the southwest winds. Stalagmite STM5, sampled at the fringe between both rain areas displays intermediate δ18O values. After 6.2 ka, similar precipitation changes are seen between eastern Socotra and northern Oman indicating that both regions are affected similarly by the monsoon. Different palaeoclimatologic records from the Arabian Peninsula currently located outside the ITCZ migration pathway display an abrupt drying around 6 ka due to their disconnection from the southwest rain influence. Records that are nowadays still receiving rain by the southwest winds, suggest a more gradual drying reflecting the weakening of the southwest monsoon.
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: According to publication, isotopic signal in Hq-1 (SISAL entity_id = 546) is exaggerated by kinetic fractionation: magnitude of change not reliable proxy, direction of change likely reliable. Although original publication states continuous growth of STM1 (entity_id = 547), we have identified a possible hiatus between depth_sample = 427.5mm (sample_id = 349662) and depth_sample = 428.5mm (sample_id = 349663).
DOI: 10.25921/y1ee-q614
title: NOAA/WDS Paleoclimatology - Flinders Reef - Coral Boron Isotope Data and pH Reconstruction

description: The oceans are becoming more acidic due to absorption of anthropogenic carbon dioxide from the atmosphere. The impact of ocean acidification on marine ecosystems is unclear, but it will likely depend on species adaptability and the rate of change of seawater pH relative to its natural variability. To constrain the natural variability in reef-water pH, we measured boron isotopic compositions in a ~300-year-old massive Porites coral from the southwestern Pacific. Large variations in pH are found over ~50-year cycles that covary with the Interdecadal Pacific Oscillation of ocean-atmosphere anomalies, suggesting that natural pH cycles can modulate the impact of ocean acidification on coral reef ecosystems.
description: 5-Yr interval Flinders Reef Boron Isotope, pH, Aragonite Saturation State, Carbon Isotope, Extension Rate and Calcification Data for 1708 to 1988. Latitude: 17.5 South Decimal Degrees, Longitude: 148.3  East Decimal Degrees, Water Depth: 5m. Coral Species: Porites. A 4.2 m long core of Porites sp. coral was analyzed from Flinders Reef, an offshore reef on the Queensland Plateau (17.5ºS, 148.3ºE), in the Coral Sea, ~250 km from the north-east coast of Australia. The coral core was cut lengthwise into 7-mm-thick slices and X-rayed to reveal annual density bands, which were used to establish the coral chronology. Samples were milled in continuous 5-year intervals down the full length of the core along major coral growth axes for the period 1990 to 1706 AD. More detailed information can be found in the original reference and in the Supporting Online Material at www.sciencemag.org/cgi/content/full/309/5744/2202/DC1. Individual boron isotope measurements for the Flinders Reef coral 5-yr interval dataset and for a section analyzed at high resolution (every mm, corresponding roughly to monthly resolution from April 1987 to April 1988) are available as Supporting Online Material at www.sciencemag.org/cgi/content/full/309/5744/2202/DC1.
DOI: 10.25921/y4t7-9x10
title: NOAA/WDS Paleoclimatology - Klesse - VPA - PINI - ITRDB GRC033

description: The Mediterranean region has been identified as a global warming hotspot, where future climate impacts are expected to have significant consequences on societal and ecosystem well-being. To put ongoing trends of summer climate into the context of past natural variability, we reconstructed climate from maximum latewood density (MXD) measurements of Pinus heldreichii (1521–2010) and latewood width (LWW) of Pinus nigra (1617–2010) on Mt. Olympus, Greece. Previous research in the northeastern Mediterranean has primarily focused on inter-annual variability, omitting any low-frequency trends. The present study utilizes methods capable of retaining climatically driven long-term behavior of tree growth. The LWW chronology corresponds closely to early summer moisture variability (May–July, r = 0.65, p < 0.001, 1950–2010), whereas the MXD-chronology relates mainly to late summer warmth (July–September, r = 0.64, p < 0.001; 1899–2010). The chronologies show opposing patterns of decadal variability over the twentieth century (r = −0.68, p < 0.001) and confirm the importance of the summer North Atlantic Oscillation (sNAO) for summer climate in the northeastern Mediterranean, with positive sNAO phases inducing cold anomalies and enhanced cloudiness and precipitation. The combined reconstructions document the late twentieth—early twenty-first century warming and drying trend, but indicate generally drier early summer and cooler late summer conditions in the period ~1700–1900 CE. Our findings suggest a potential decoupling between twentieth century atmospheric circulation patterns and pre-industrial climate variability. Furthermore, the range of natural climate variability stretches beyond summer moisture availability observed in recent decades and thus lends credibility to the significant drying trends projected for this region in current Earth System Model simulations.
DOI: 10.15468/dl.xk5522
title: Occurrence Download

description: A dataset containing 680 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Catalpa bignonioides)",
 "StateProvince is one of (Alabama, Florida, Georgia, Louisiana, Mississippi, Texas, Vermont)",
 "BasisOfRecord is Specimen"
 ]
}

 The dataset includes 680 records from 55 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0024750-251009101135966/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25921/yyqj-mc85
title: NOAA/WDS Paleoclimatology - Ferrero - El Piquete - PIQ - JGAU - ITRDB ARG157

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: Tropical Tree Ring Network SiteID = JUAUS_ARG_06
DOI: 10.25921/yfnd-kp56
title: NOAA/WDS Paleoclimatology - Locosselli - Terra Ronca - HYCO - ITRDB BRA023

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: Tropical Tree Ring Network SiteID = HYCOU_BRA_01
DOI: 10.25921/yxds-j694
title: NOAA/WDS Paleoclimatology - Ifaty Reef - Stable Isotope and Sr/Ca Data

description: The Ifaty coral record from off SW Madagascar provide a 336-year coral oxygen isotope record that is used to investigate the natural variability of the western Indian Ocean subtropical SST dipole and ENSO. The coral oxygen isotope record primarily reflects past sea-surface temperature (SST) variability on seasonal to multidecadal scales. To validate the SST reconstructions derived from oxygen isotopes, Sr/Ca ratios were obtained for selected time windows (1973–1995, 1863–1910, 1784–1809, 1688–1710). The period 1675–1760 was found to be the coolest period of the entire record with anomalies of 0.3–0.5 °C that includes the Late Maunder Minimum (1675–1710). The warmest periods, as indicated by our data, occur between 1880 and 1900 and the upper part of the Ifaty record (1973–1995). We generated a time series of coral δ18O for different seasons of the year to investigate austral winter and summer SST variability that influences rainfall intensity over southern Africa. Winter coral δ18O is coherent with winter SST on decadal and multidecadal time scales between 1854 and 1995. We suggest that the Ifaty winter time series provides a record of winter SST variability over the Mozambique Channel/Agulhas Current region over 336 years. Strong Indian Ocean subtropical dipole events, occurring during austral summer, are displayed in the Ifaty record. The austral summer coral δ18O is coherent and in phase with ENSO indices on interannual time scales (2–4 years) between 1880–1920, 1930–1940 and after 1970. Our data indicate that the impact of ENSO on SW Indian Ocean SST and atmospheric circulation was also strong between 1680–1720 and 1760–1790, in agreement with other studies. We show evidence that these variations are caused by changes in the regional hydrologic balance. The results demonstrate that the impact of ENSO cycles in the region of the SW Indian Ocean has changed significantly since 1970 and relate to a warming of southwestern Indian Ocean surface waters altering the spatial signature of ENSO.
description: We generated a time series of coral d18O for different seasons of the year to investigate austral winter and summer SST variability. To validate the SST reconstructions derived from oxygen isotopes, Sr/Ca ratios were obtained for selected time windows (1973 to 1995, 1863 to 1910, 1784 to 1809, 1688 to 1710). Sample location: Ifaty reef, Madagascar: 23 deg. 8.58' S, 43 deg 34.98' E, 1.1m. water depth, Porites lobata. Data are a bimonthly time series interpolated to the mid-month. Therefore the month of January/February appear in the data as 1660.125; March/April: 1660.291; may/june: 1660.458; july/august: 1660.625; september/october: 1660.791; november/december: 1660.958. This is because meteorological data are also given as mid-month values.
DOI: 10.13140/rg.2.2.26363.52009
title: Svlecistata kako priroden hazard
DOI: 10.25921/ywa9-p333
title: NOAA/WDS Paleoclimatology - Peros Banhos Atoll - Oxygen Isotope Data

description: We have analyzed the stable oxygen isotopic composition of two Porites corals from the Chagos Archipelago, which is situated in the geographical center of the Indian Ocean. Coral d18O at this site reliably records temporal variations in precipitation associated with the Intertropical Convergence Zone (ITCZ). Precipitation maxima occur in boreal winter, when the ITCZ forms a narrow band across the Indian Ocean. The Chagos then lies within the center of the ITCZ, and rainfall is strongly depleted in d18O. A 120-yr coral isotopic record indicates an alternation of wet and dry intervals lasting 15 to 20 yr. The most recent 2 decades are dominated by interannual variability, which is tightly coupled to the El Nino-Southern Oscillation (ENSO). This is unprecedented in the 120 yr of coral record. As the ITCZ is governed by atmospheric dynamics, this provides evidence of a major change in the coupled ENSO-monsoon system.
description: Bimonthly resolved stable oxygen isotope record from a modern coralcollected at Peros Banhos Atoll (central Indian Ocean). Coral d18O isinfluenced by rainfall associated with the Intertropical Convergence Zone. Stable isotope analysis: Carbonate powders were reacted with 100 % phosphoricacid at 75°C in an online carbonate preparation line (Carbo-Kiel-singlesample acid bath) connected to a Finnigan Mat 252 mass spectrometer.All values are reported in per mil relative to PDB by assigning a d18Ovalue of -2.20 to NBS-19. Reproducibility was checked by replicate analysisof laboratory standards and is better than 0.05 for d18O. Sampling resolution: The core was sampled at 2 mm increments. Age model: The most negative isotopic value in any given year was assignedto February 15. All other age assignments are obtained through linearinterpolation between these anchor points. Sample site is Peros Banhos Atoll in the Chagos Archipelago, central Indian Ocean. 5 deg., 26.4' South, 71 deg., 45.86' East, 1.8 M. water depth.
DOI: 10.13140/rg.2.2.15248.61441
title: Auditor Certificate
DOI: 10.25921/ydj4-2q10
title: NOAA/WDS Paleoclimatology - De Ridder - Ivory Coast - TESU - ITRDB CIV001

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: Tropical Tree Ring Network SiteID = TESUP_IVO_03
DOI: 10.25921/yfr9-en88
title: NOAA/WDS Paleoclimatology - Cahuana - Madre de Dios - SWMC - ITRDB PER010

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: Tropical Tree Ring Network SiteID = SWMAC_PER_02
DOI: 10.25921/y1cx-1x04
title: NOAA/WDS Paleoclimatology - Trouet - Kazuramimba - BRSP - ITRDB TZA002

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: Tropical Tree Ring Network SiteID = BRSPI_TAN_09
DOI: 10.13140/rg.2.2.19547.77600
title: Analysis of the propagation different wavelengths (632.8, 785, and 1330 nm) in Free Space Laser Link at Babylon City
DOI: 10.25921/yh2p-ce75
title: NOAA/WDS Paleoclimatology - Taylor fire data from DM_Radio - IMPD USRA_001

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: 
Dating Method: Dated
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/usra_001.fhx
along with associated metadata at:
  https://www.ncei.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/usra_001-noaa.txt
DOI: 10.13140/rg.2.2.26415.94889
title: Drugs and Gender 16-10-21
DOI: 10.13140/rg.2.2.34804.55683
title: Co-morbidity 16-10-21