cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.15468/dl.rha4uk
title: Occurrence Download

description: A dataset containing 75948 species occurrences available in GBIF matching the query:
{
 "and" : [
 "GadmGid is FRA",
 "OccurrenceStatus is Present",
 "TaxonKey is Burhinus oedicnemus"
 ]
}

 The dataset includes 75948 records from 1324 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0007377-260221153910048/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.t3czxj
title: Occurrence Download

description: A dataset containing 122 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Corispermum pallasii",
 "Country is Latvia",
 "HasCoordinate is true"
 ]
}

 The dataset includes 122 records from 2 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0077637-250717081556266/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.34740/kaggle/dsv/12627485
title: Layline Shareholder activism dataset
DOI: 10.15468/dl.p5hrxx
title: Occurrence Download

description: A dataset containing 5950 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Corispermum pallasii",
 "Country is Netherlands",
 "HasCoordinate is true"
 ]
}

 The dataset includes 5950 records from 7 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0077639-250717081556266/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25921/ytjn-6p36
title: NOAA/WDS Paleoclimatology - Stahle - Bear Valley Buttes - QUDG - ITRDB CA649

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 Chronology file added 2018-12-20. NOAA Template Raw Measurements file added 2019-02-08.
DOI: 10.25921/yg2p-ke03
title: NOAA/WDS Paleoclimatology - Stahle - Dead Mule Saddle - QUDG - ITRDB CA653

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 Chronology file added 2018-12-20. NOAA Template Raw Measurements file added 2019-02-08.
DOI: 10.25921/yd8x-zc41
title: NOAA/WDS Paleoclimatology - Stahle - Empire Creek - QUDG - ITRDB CA655

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 Chronology file added 2018-12-20. NOAA Template Raw Measurements file added 2019-02-08.
DOI: 10.15468/dl.u53uks
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Leptosomiformes)",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "Year is greater than or equal to 1980",
 "OccurrenceStatus is Present",
 {
 "not" : {
 "BasisOfRecord" : [
 "is one of (Fossil, Living Specimen)"
 ]
 }
 },
 "Geometry POLYGON((-160 20,-150 20,-150 30,-160 30,-160 20))"
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0024734-251009101135966/datasets/export for details.
DOI: 10.25921/yxhy-3g37
title: NOAA/WDS Paleoclimatology - EPICA Dronning Maud Land,EPICA Dome C - 140KYr N2O Data, 800KYr N2O Data

description: We present records of atmospheric nitrous oxide obtained from the ice cores of the European Project for Ice Coring in Antarctica (EPICA) Dome C and Dronning Maud Land sites shedding light on the concentration of this greenhouse gas on glacial–interglacial and millennial time scales. The extended EPICA Dome C record covers now all interglacials of the last 800,000 years and reveals nitrous oxide variations in concert with climate. Highest mean interglacial nitrous oxide concentrations of 280 parts per billion by volume are observed during the interglacial corresponding to Marine Isotope Stage 11 around 400,000 years before present, at the same time when carbon dioxide and methane reach maximum mean interglacial concentrations. The temperature reconstruction at Dome C indicates colder interglacials between 800,000 and 440,000 years before present compared to the interglacials of the last 440,000 years. In contrast to carbon dioxide and methane, which both respond with lower concentrations at lower temperatures, nitrous oxide shows mean interglacial concentrations of 4–19 parts per billion by volume higher than the preindustrial Holocene value during the interglacials corresponding to Marine Isotope Stage 9–19. At the end of most interglacials, nitrous oxide remains substantially longer on interglacial levels than methane. Nevertheless, nitrous oxide shows millennial-scale variations at the same time as methane throughout the last 800,000 years. We suggest that these millennial-scale variations have been driven by a similar mechanism as the Dansgaard/Oeschger events known from the last glacial. Our data lead to the hypothesis that emissions from the low latitudes drive past variations of the atmospheric nitrous oxide concentration.
DOI: 10.25921/yp0d-wz39
title: NOAA/WDS Paleoclimatology - Northern Hemisphere 700 Year Temperature Reconstruction

description: The magnitude and impact of future global warming depends on the sensitivity of the climate system to changes in greenhouse gas concentrations. The commonly accepted range for the equilibrium global mean temperature change in response to a doubling of the atmospheric carbon dioxide concentration, termed climate sensitivity, is 1.5-4.5 K. A number of observational studies, however, find a substantial probability of significantly higher sensitivities, yielding upper limits on climate sensitivity of 7.7 K to above 9 K. Here we demonstrate that such observational estimates of climate sensitivity can be tightened if reconstructions of Northern Hemisphere temperature over the past several centuries are considered. We use large-ensemble energy balance modelling and simulate the temperature response to past solar, volcanic and greenhouse gas forcing to determine which climate sensitivities yield simulations that are in agreement with proxy reconstructions. After accounting for the uncertainty in reconstructions and estimates of past external forcing, we find an independent estimate of climate sensitivity that is very similar to those from instrumental data. If the latter are combined with the result from all proxy reconstructions, then the 5-95 per cent range shrinks to 1.5-6.2 K, thus substantially reducing the probability of very high climate sensitivity.
description: 30-90°N annual mean temperature reconstruction (CH-blend), 
used with large-ensemble energy balance modelling to simulate the temperature response 
to past solar, volcanic and greenhouse gas forcing, in order to determine which climate 
sensitivities yield simulations that are in agreement with proxy reconstructions.
The data include the CH-blend reconstruction and 2.5% and 97.5% uncertainty ranges. 
The uncertainty ranges reflect both uncertainty in the amplitude of the reconstruction, 
and sampling uncertainty combined. 
Forcing inputs also included in file hegerl2006forcing.txt

Supplementary Table 1 archived here, and its heading, were replaced on 5 February 2007. 
This is a corrected version of the previous Table S1, in which only the scaling uncertainty 
was included; in the corrected Table S1, scaling and sampling uncertainties are also included.
DOI: 10.25921/y76v-c285
title: NOAA/WDS Paleoclimatology - Kuroshio Extension Plio-Pleistocene Alkenone SST Reconstruction

description: Insolation-driven changes in poleward heat transport and changes in greenhouse gas concentrations can explain aspects of the rise of obliquity-paced climate variability during the Pliocene-Pleistocene transition. Based on an alkenone-based sea surface temperature (SST) reconstruction of the Kuroshio Current Extension (KCE), we propose here that emergence of this region as the primary locus of ocean-atmosphere heat transfer in the Pacific Ocean promoted Northern Hemisphere Glaciation (NHG). Our record shows that with intensification of NHG at 2.7 Ma, the KCE cooled 2-4°C during glacial intervals, likely in NH winter/spring. These high-amplitude 41-kyr SST cycles slightly lead d18O variations, ruling out global ice-volume changes as the primary cause. The lead of SST over d18O cycles matches the phasing between these two proxies observed in the tropics, supporting changes in CO2 concentrations as a unifying mechanism of ocean surface temperature change. However, the! amplitude of the KCE SST cycle is twice that of the tropical records, pointing to an additional, regional process. We infer that cooling of the North Pacific sea surface by the East Asian winter monsoon and associated westerlies intensified during glacial intervals. This transfer of heat and moisture from the ocean to the atmosphere potentially furthered glacial formation by accelerating snow fall in North America. Therefore, these results might also support a role for tropical-extratropical heat balance in enhancing glacial growth via the obliquity pacing.
description: These are alkenone-based sea surface temperature estimates from ODP Site 1208, measured via gas chromatography on the total lipid extract. Some 500 sampling intervals were measured at 10 cm resolution (2500 year time step) through the Plio-Pleistocene interval (86-136 mbsf; 1.76-3.00 Ma).
DOI: 10.25921/ycsx-9h67
title: NOAA/WDS Paleoclimatology - Cook - Astore-Rama - PIWA - ITRDB PAKI018

description: Past global climate changes had strong regional expression. To elucidate their spatio-temporal pattern, we reconstructed past temperatures for seven continental-scale regions during the past one to two millennia. The most coherent feature in nearly all of the regional temperature reconstructions is a long-term cooling trend, which ended late in the nineteenth century. At multi-decadal to centennial scales, temperature variability shows distinctly different regional patterns, with more similarity within each hemisphere than between them. There were no globally synchronous multi-decadal warm or cold intervals that define a worldwide Medieval Warm Period or Little Ice Age, but all reconstructions show generally cold conditions between ad 1580 and 1880, punctuated in some regions by warm decades during the eighteenth century. The transition to these colder conditions occurred earlier in the Arctic, Europe and Asia than in North America or the Southern Hemisphere regions. Recent warming reversed the long-term cooling; during the period ad 1971-2000, the area-weighted average reconstructed temperature was higher than any other time in nearly 1,400 years.
description: Purpose of Collection: 
# Climatology - temperature analyses NOAA Template Raw Measurements file added 2019-04-08. 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/ynfx-az03
title: NOAA/WDS Paleoclimatology - Negev Desert, Israel 350KYr Speleothem Stable Isotope Data

description: Speleothems in arid and hyper-arid areas of Negev Desert, Israel, are used in paleoclimate reconstruction of northern margins of Saharan-Arabian Desert, focused on the following objectives: 1) precise U-Th dating of the timing of speleothem growth as an indicator of periods of humid climate, i.e. positive effective precipitation; 2) the origin of rainfall using the speleothem d18O and changes in spatial pattern of speleothem deposition and speleothem thickness along a north-south transect; 3) changes of vegetation cover based on speleothem d13C variations.

During the last 350 ka major humid periods, referred to herein as Negev Humid Periods (NHP), occurred in the central and southern Negev Desert at 350-310 ka (NHP-4), 310-290 ka (NHP-3), 220-190 ka (NHP-2), and 142-109 ka (NHP-1). NHP-4, NHP-2 and NHP-1 are interglacial events, whereas NHP-3 is associated with a glacial period. During NHP-1, 2 and 3 the thickness and volume of the speleothems decrease from the north to the south, and in the most southern part of the region only a very thin flowstone layer formed during NHP-1, with no speleothem deposition occurring during NHP-2 and 3. These data imply that the Eastern Mediterranean Sea was the major source of the rainfall in northern and central Negev. More negative speleothem d18O values, relative to central parts of Israel (Soreq Cave) are attributed to Rayleigh distillation because of the increasing distance from the Mediterranean Sea. Speleothem deposition during the NHP-4 in the southern Negev was more intensive than in most of the central Negev, suggesting the prominence of the tropical rain source.

Decrease in speleothem d13C during NHP events indicates growth of the vegetation cover. Nevertheless, the ranges of d13C values show that the vegetation remained semi-desert C4 type throughout the NHPs, with an additional significant carbon fraction coming from the host rock and the atmosphere. These observations, together with small thickness of the speleothem layers, favor that NHP events consisted of clusters of very short humid episodes interspersed with long droughts.

NHP events were contemporaneous with climate periods with monsoon index of >=51 (cal/cm2 x day) and with the formation of sapropel layers in the Mediterranean Sea. Such simultaneous intensification of the monsoon and Atlantic-Mediterranean cyclones is probably related to the weakening of the high pressure cell above sub-tropical Atlantic Ocean, which enabled more rainfall to penetrate into the Saharan-Arabian Desert from the north and south. The contemporaneous occurrence of the NHP events and the increased monsoon rainfall could have opened migration corridors, creating climatic "windows of opportunity" for dispersals of hominids and animals out of the African continent.
description: Stable isotope (d18O and d13C) data from speleothems collected in 9 caves located in the Negev Desert, Israel.
DOI: 10.25921/ya3v-sx92
title: NOAA/WDS Paleoclimatology - Ashalim Cave, Israel Plio-Pleistocene Speleothem Stable Isotope Data

description: The Middle-Late Pliocene climate was 2-3°C warmer than today, but with similar levels of atmospheric CO2. This period reflects climate conditions expected in the near future, and is therefore an important target for current data-modeling studies. This study reconstructs the Pliocene-Quaternary evolution of arid conditions on the northern margin of the Saharan-Arabian desert, using radiometrically (U-Pb) dated periods of speleothem deposition from three caves of the Negev Desert, Israel. Speleothem growth started between ~3.75 and ~3 Ma, at the end of the first significant tectonic uplift of the western shoulder of the Dead Sea Rift. Major speleothem deposition, indicating wet conditions, occurred during the Pliocene around ~3.1 Ma, with subsequent aridity during the last 3 Myr, punctuated by short wet episodes - the Pleistocene Negev Humid Periods (NHP). The oldest dated NHP occurred between ~1.7 and ~1.25 Ma, and other short humid episodes continued intermittently later. Speleothem d18O values (-6.9 per mil to -11.2 per mil) show that the humid episodes were associated with periods of low global ice volume and warm temperatures. After correction for rainfall d18O changes associated with ice volume and temperature effects, the observed relative constancy of speleothem d18O values from Pliocene to Late Pleistocene indicates rainfall was from a common source, most probably the eastern Mediterranean Sea. The humid Pliocene conditions could be generated by more southerly position of the Mediterranean coast (allowing the access of Mediterranean precipitation to the Negev), as well as by warmer Atlantic Sea Surface Temperatures, that weakened the Azores High Pressure Cell. Maximum amounts of precipitation were 500-600 mm/a during the Pliocene and >300 mm/a during Pleistocene NHP. The Pliocene and the earliest Pleistocene NHP are associated with formation of lakes in the Negev. Low 87Sr/86Sr ratios of ~0.7078 in the Pliocene speleothems are indicative of low dust supply, low water residence time in the vadose zone and relatively high weathering rates of the cave host rock. Increase of 87Sr/86Sr ratios to 0.7082-0.7083 in the Pleistocene suggest an increased supply of desert dust, high water residence time in the vadose zone and reduced host rock weathering.
description: Stable isotope (d18O and d13C) data from speleothems collected in Ashalim Cave, Negev Desert, Israel.
DOI: 10.25921/yk86-hz96
title: NOAA/WDS Paleoclimatology - Bigelow - Plumas County - CADE - ITRDB CA683

description: Large trees (>76 cm breast-height diameter) are vital components of Sierra Nevada/Cascades mixed-conifer ecosystems because of their fire resistance, ability to sequester large amounts of carbon, and role as preferred habitat for sensitive species such as the California spotted owl. To investigate the likely performance of large trees in a rapidly changing climate, we analyzed growth rings of five conifer species against 20th century climate trends from local weather stations. Over the local station period of record, there were no temporal trends in precipitation, but maximum temperatures increased by 0.10 to 0.13C/decade (summer and autumn), and minimum temperatures increased by 0.11 to 0.19C/decade in all seasons. All species responded positively to precipitation, but more variation was explained by a significant positive response to minimum winter temperatures. High maximum summer temperature adversely affected growth of two species, and maximum spring temperatures in the year prior to ring formation were negatively associated with growth of one species. The strong coherent response to increasing minimum temperatures bodes well for growth of large trees in Sierra/Cascades region mixed conifer forest under continued climatic warming, but these trees will still be under threat by the increased fire intensity that is a indirect effect of warming.
description: Purpose of Collection:
# Ecology
# Cores Stored at:
# Malcolm North lab, UC Davis
# Notes:
# Data collected at 17 sites in Plumas county. Locations available upon 
# request to S. Bigelow. Data collected to determine tree growth response 
# with respect to climate. Detrended with spline removing 50at 2/3 series 
# length. Residual chronology prewhitened, means obtained with Tukey's Biweight 
# robust mean. NOAA Template Raw Measurements file added 2019-02-08. July 2024: Elevation added by WDS-Paleo using get_elev_point() from the elevatr R package with the USGS Elevation Point Query Service (epqs) and WGS 84 reference frame.
DOI: 10.25921/yje1-c657
title: NOAA/WDS Paleoclimatology - A 3000-year varved record of glacier activity and climate change from the proglacial lake Hvítárvatn, Iceland

description: A suite of environmental proxies in annually laminated sediments from Hvítárvatn, a proglacial lake in the central highlands of Iceland, are used to reconstruct regional climate variability and glacial activity for the past 3000 years. Sedimentological analysis is supported by tephrostratigraphy to confirm the continuous, annual nature of the laminae, and a master varve chronology places proxies from multiple lake cores in a secure geochronology. Varve thickness is controlled by the rate of glacial erosion and efficiency of subglacial discharge from the adjacent Langjökull ice cap. The continuous presence of glacially derived clastic varves in the sediment fill confirms that the ice cap has occupied the lake catchment for the duration of the record. Varve thickness, varve thickness variance, ice rafted debris, total organic carbon (mass flux and bulk concentration), and C:N of sedimentary organic matter, reveal a dynamic late Holocene climate with abrupt and large-scale changes in ice-cap size and landscape stability. A first-order trend toward cooler summers and ice-cap expansion is punctuated by notable periods of rapid ice cap growth and/or landscape instability at ca 1000 BC, 600 BC, 550 AD and 1250 AD. The largest perturbation began ca 1250 AD, signaling the onset of the Little Ice Age and the termination of three centuries of relative warmth during Medieval times. Consistent deposition of ice-rafted debris in Hvítárvatn is restricted to the last 250 years, demonstrating that Langjökull only advanced into Hvítárvatn during the coldest centuries of the Little Ice Age, beginning in the mid eighteenth century. This advance represents the glacial maximum for at least the last 3 ka, and likely since regional deglaciation 10 ka. The multi-centennial response of biological proxies to the Hekla 3 tephra deposition illustrates the significant impact of large explosive eruptions on local environments, and catchment sensitivity to perturbations.