cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.25921/kxjd-vm75
title: NOAA/WDS Paleoclimatology - Southern British Columbia 400 Year Summer Temperature Reconstructions

description: Maximum latewood density (MXD) is a strong proxy of summer temperatures. Despite this, there is a paucity of long MXD chronologies in the Northern Hemisphere, which limits large-scale tree-ring-based reconstructions of past temperature which are dominated by ring-width (RW) data - a weaker temperature proxy at inter-annual time-scales. This paucity likely results from the relative expense of measuring MXD and the lack of laboratories with the facilities to measure it. Herein, we test the ability of a relatively new, less expensive, tree-ring parameter, Blue Intensity (BI), to act as a surrogate parameter for MXD. BI was measured on Engelmann spruce samples from British Columbia where MXD had previously been measured to allow direct comparison between the two parameters. Signal strength analyses indicate that 8 MXD series were needed to acquire a robust mean chronology while BI needed 14. Utilising different detrending methods and parameter choices (RW + MXD vs RW + BI), a suite of reconstruction variants was developed. The explained variance from the regression modelling (1901-1995) of May-August maximum temperatures ranged from 52% to 55%. Validation tests over the earlier 1870-1900 period could not statistically distinguish between the different variants, although spectral analysis identified more lower frequency information extant in the MXD-based reconstructions - although this result was sensitive to the detrending method used. Ultimately, despite the MXD-based reconstruction explaining slightly more of the climatic variance, statistically robust reconstructions of past summer temperatures were also derived using BI. These results suggest that there is great potential in utilising BI for dendroclimatology in place of MXD data. However, more experimentation is needed to understand (1) how well BI can capture centennial and lower frequency information and (2) what biases may result from wood discolouration, either from species showing a distinct heartwood/sapwood boundary or from partly decayed sub-fossil samples. 
description: Summer (May-June-July-August) temperature reconstructions for southern British Columbia, based on tree-ring width (RW), maximum density (MXD), and Blue Intensity (BI) measurements from 7 sites.
DOI: 10.25921/k6t3-1n87
title: NOAA/WDS Paleoclimatology - Eastern Tibetan Plateau 1000 Year Summer Temperature Reconstruction

description: Although tree-ring-width-based temperature reconstructions of centennial-to-millennial length have previously been published for many parts of the eastern Tibetan Plateau (ETP), a millennium-long regional-scale composite reconstruction with annual resolution has so far been lacking. Here, the authors present a reconstruction of June-August (JJA) temperature variability over the ETP for the period AD 1000-2005 using a nested composite-plus-scale (CPS) approach to 12 temperature-sensitive tree-ring width chronologies, including 946 individual tree-ring width series. The composite reconstruction reveals warm episodes occurring during much of the sixteenth, nineteenth, and twentieth centuries and cold episodes during much of the eleventh, seventeenth, and eighteenth centuries. The period AD 1996-2005 is likely the warmest decade in the context of the past millennium. The authors explore the influence of possible forcings, finding only a weak direct relationship of temperature changes over the ETP with solar forcing at multidecadal time scales but a robust in-phase relationship with the Atlantic multidecadal oscillation (AMO) during the past millennium. This suggests that the AMO may play an important role in controlling summer temperature variability over the ETP at multidecadal time scales. A comparison with temperature reconstructions from the higher latitudes of East Asia, central-eastern China, and the whole of the Northern Hemisphere shows that the cold eleventh century and the warm nineteenth century prevailing over ETP are somewhat unique, suggesting regional specific characteristics of the temperature variability in this region. This result highlights the need to further increase the number of millennium-long, high-resolution temperature records from East Asia.
description: A millennium-long temperature reconstruction for the Eastern Tibetan Plateau by applying the composite plus scale method to 12 tree-ring width chronologies. Data are reported as temperature anomalies with respect to AD 1000-2005, in degrees C.
DOI: 10.25921/kyj0-c850
title: NOAA/WDS Paleoclimatology - Porter - Old Crow River site OC51 - PCGL - ITRDB CANA543

description: We present a new 23-site network of white spruce ring-width chronologies near boreal treeline in Old Crow Flats, Yukon Territory, Canada. Most chronologies span the last 300 years and some reach the mid-16th century. The chronologies exhibit coherent growth patterns before the 1930s. However, since the 1930s, they diverge in trend and exhibit one of two contrasting, but well-replicated patterns we call Group 1 and Group 2. Over the instrumental period (1930-2007) Group 1 sites were inversely correlated with previous-year July temperatures while Group 2 sites were positively correlated with growth-year June temperatures. At the broader northwestern North America (NWNA) scale, we find that the Group 1 and Group 2 patterns are common to a number of white spruce chronologies, which we call NWNA 1 and NWNA 2 chronologies. The NWNA 1 and NWNA 2 chronologies also share a single coherent growth pattern prior to their divergence (ca. 1950s). Comparison of the NWNA 1/NWNA 2 chronologies against gridded 20th-century temperatures for NWNA and reconstructed northern hemisphere summer temperatures (ad 1300-2000) indicates that all sites responded positively to temperature prior to the mid-20th century (at least back to ad 1300), but that some changed to a negative response (NWNA 1) while others maintained a positive response (NWNA 2). The spatial extent of divergence implies a large-scale forcing. As the divergence appears to be restricted to the 20th century, we suggest that the temperature response shift represents a moisture stress caused by an anomalously warm, dry 20th-century climate in NWNA, as indicated by paleoclimatic records. However, because some sites do not diverge and are located within a few kilometres of divergent sites, we speculate that site-level factors have been important in determining the susceptibility of sites to the large-scale drivers of divergence.
description: NOAA Template Raw Measurements file added 2019-01-27. NOAA Template Raw Measurements file added 2019-02-04.
DOI: 10.25921/k1a1-8c59
title: NOAA/WDS Paleoclimatology - Global Alkenone UK37 Surface Sediment Database

description: The alkenone‐based UK'37 proxy is a cornerstone of paleoclimatology, providing insight into the temperature history of the Earth's surface ocean. Although the relationship between UK'37 and sea surface temperatures (SSTs) is robust and well supported by experimental data, there remain outstanding issues regarding the seasonality of production of alkenones and the response of UK'37 at very warm and cold SSTs. Using a data set of over 1,300 core‐top UK'37 measurements, we find compelling evidence of seasonal production in the North Atlantic, North Pacific, and Mediterranean Oceans. We also find significant attenuation of the UK'37 response to SST at warm temperatures (>24C), with the slope reduced by nearly 50% as UK'37 approaches unity. To account for these observations in a calibration, we develop a new Bayesian B‐spline regression model, BAYSPLINE, for theUK'37 paleothermometer. BAYSPLINE produces similar estimates as previous calibrations below ~24 degrees, but above this point it predicts larger SST changes, in accordance with the attenuation of the UK'37 response. Example applications of BAYSPLINE demonstrate that its treatment of seasonality and slope attenuation improves paleoclimatic interpretations, with important consequences for the inference of SSTs in the tropical oceans. BAYSPLINE facilitates a probabilistic approach to paleoclimate, building upon growing efforts to develop more formalized statistical frameworks for paleoceanographic reconstruction.
DOI: 10.25921/k26p-wk11
title: NOAA/WDS Paleoclimatology - Marquardt - Mt. Lemmon - PIPO - ITRDB AZ598

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/kmpn-8j17
title: NOAA/WDS Paleoclimatology - Marcinkowski - South Cascade Glacier - TSME - ITRDB WA147

description: Mountain hemlock growth chronologies were used to reconstruct the mass balance of South Cascade Glacier, an alpine glacier in the North Cascade Range of Washington State. The net balance reconstruction spans 350 years, from 1659 to 2009. Summer and winter balances were reconstructed for 1346-2009 and 1615-2009, respectively. Relationships between mass balance and winter precipitation, temperature, the Pacific Decadal Oscillation index, and the El Nino Southern Oscillation index indicate that these influence glacier balance at various temporal scales. Above-average net, summer, and winter mass balance occurred mainly in 1690-1710, 1810-1820, 1845-1860, 1865-1890, and 1975-1990, and below-average balance periods include 1680-1690, 1790-1810, 1820-1840, and 1930-1960. Above- and below-average reconstructed mass balances at South Cascade Glacier were concurrent with similar periods from other glacier balance reconstructions in the Pacific Northwest region of North America. Agreement among these records suggests that changes in South Cascade Glacier mass balance are good indicators of regional balance fluctuations, and glaciers in the Pacific Northwest are responding similarly to regional external forcings. The current rate of decline, from 2000 to 2009, in the reconstructed balance record has been faster than any decline in a century. This decreasing trend is projected to continue with increasing temperatures, and will likely affect glacier-influenced water resources in the Pacific Northwest.
description: NOAA Template Raw Measurements file added 2019-02-08.
DOI: 10.25921/k83n-kn82
title: NOAA/WDS Paleoclimatology - Polar Ice Cores 3,000 Year Nitrous Oxide d15N and d18O Data

description: Nitrous oxide (N2O) is a strong greenhouse gas whose mole fraction in the atmosphere has increased over the industrial period. We present a new set of isotope measurements of N2O in air extracted from ice cores covering the last 3,000 years. For the preindustrial (PI) atmosphere, we find an average N2O mole fraction of (267 ± 1) nmol/mol and average tropospheric N2O isotopic values of d15NavPI = (9.5 ± 0.1)permil, d18OPI = (47.1 ± 0.2)permil, d15NalphaPI = (17.8 ± 0.4)permil, and d15NBetaPI = (1.2 ± 0.4)permil. From PI to modern times all isotope signatures decreased with a total change of d15Nav = (-2.7 ± 0.2)permil, d18O = (-2.5 ± 0.4)permil, d15Nalpha = (-2.0 ± 0.7)permil, and d15NBeta (-3.5 ± 0.7)permil. Interestingly, the temporal evolution is not the same for d15Nav and d18O. d18O trends are relatively larger during the early part, and d15Nav trends are larger during the late part of the industrial period, implying a decoupling of sources over the industrial period. Using a mass balance model, we determined the isotopic composition of the total average N2O source. Assuming that the total present source is the sum of a constant natural source and an increasing anthropogenic source, this anthropogenic source has an isotopic signature of d15Navsource,anthrop = (-15.0 ± 2.6)permil, d18Osource,anthrop = (30.0 ± 2.6)permil, d15Nalphasource,anthrop = (-4.5 ± 1.7)permil, and d15NBetasource,anthrop = (-24.0 ± 8.4)permil. The 15N site preference of the source has increased since PI times, which is indicative of a relative shift from denitrification to nitrification sources, consistent with agricultural emissions playing a major role in the N2O increase.
description: Ice core nitrogen and oxygen isotope (d15N and d18O) of nitrous oxide (N2O) data from polar ice cores for the past 3,000 years.
DOI: 10.25921/k8wb-k496
title: NOAA/WDS Paleoclimatology - Gulf of California Foraminifera and Wood 14C Data

description: Records of past climate and ocean circulation derived from marine sediments. 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.
DOI: 10.34740/kaggle/dsv/14486854
title: Turin Escooter Trips 2024
DOI: 10.15156/bio/sh1884214.10fu
title: SH1884214.10FU

description: UNITE provides a unified way for delimiting, identifying, communicating, and working with DNA-based Species Hypotheses (SH). All fungal ITS sequences in the international nucleotide sequence databases are clustered to approximately the species level by applying a set of dynamic distance values (<0.5 - 3.0%). All species hypotheses are given a unique, stable name in the form of a DOI, and their taxonomic and ecological annotations are verified through distributed, web-based third-party annotation efforts. SHs are connected to a taxon name and its classification as far as possible (phylum, class, order, etc.) by taking into account identifications for all sequences in the SH. An automatically or manually designated sequence is chosen to represent each such SH. These sequences are released (https://unite.ut.ee/repository.php) for use by the scientific community in, for example, local sequence similarity searches and next-generation sequencing analysis pipelines. The system and the data are updated automatically as the number of public fungal ITS sequences grows.
DOI: 10.15156/bio/sh1884970.10fu
title: SH1884970.10FU

description: UNITE provides a unified way for delimiting, identifying, communicating, and working with DNA-based Species Hypotheses (SH). All fungal ITS sequences in the international nucleotide sequence databases are clustered to approximately the species level by applying a set of dynamic distance values (<0.5 - 3.0%). All species hypotheses are given a unique, stable name in the form of a DOI, and their taxonomic and ecological annotations are verified through distributed, web-based third-party annotation efforts. SHs are connected to a taxon name and its classification as far as possible (phylum, class, order, etc.) by taking into account identifications for all sequences in the SH. An automatically or manually designated sequence is chosen to represent each such SH. These sequences are released (https://unite.ut.ee/repository.php) for use by the scientific community in, for example, local sequence similarity searches and next-generation sequencing analysis pipelines. The system and the data are updated automatically as the number of public fungal ITS sequences grows.
DOI: 10.15468/dl.nn2sqg
title: Occurrence Download

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

 The dataset includes 2 records from 2 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0090927-250717081556266/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.pwb7q8
title: Occurrence Download

description: A dataset containing 618 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Crypturellus duidae)",
 "HasCoordinate is true",
 "OccurrenceStatus is Present",
 "License is one of (CC-BY 4.0, CC0 1.0)"
 ]
}

 The dataset includes 618 records from 3 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0090926-250717081556266/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.36myax
title: Occurrence Download

description: A dataset containing 529 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Gnaphalium polycaulon",
 "Country is Australia",
 "HasCoordinate is true"
 ]
}

 The dataset includes 529 records from 21 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0090928-250717081556266/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.6084/m9.figshare.29804525.v1
title: The prediction method for coil outlet temperature of ethylene cracking furnace based on CNN-BiLSTM-Attention

description: The main production target hydrocarbons such as ethylene, propylene, butadiene, etc. are also accompanied by the generation of various by-products such as aromatic hydrocarbons, methane, ethane, etc. This article collected 17 parameters of the cracking furnace, including furnace tube temperature, cracking gas temperature, olefins, hydrocarbons, alkanes, etc. Among them, COT was used as the output parameter.
DOI: 10.15468/dl.vjcnhm
title: Occurrence Download

description: A dataset containing 1 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Paspalum vaginatum",
 "Country is Fiji",
 "HasCoordinate is true"
 ]
}

 The dataset includes 1 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0090930-250717081556266/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.xsuvk2
title: Occurrence Download

description: A dataset containing 943 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Centaurea jacea",
 "Country is United States of America",
 "HasCoordinate is true"
 ]
}

 The dataset includes 943 records from 68 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0090929-250717081556266/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.8cpr27
title: Occurrence Download

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

 The dataset includes 2 records from 2 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0090931-250717081556266/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/12649511
title: Peer-to-Peer Boliviano (BOB) Exchange Data
DOI: 10.15468/dl.rq8hz9
title: Occurrence Download

description: A dataset containing 6 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Nemacheilus petrubanarescui)",
 "BasisOfRecord is one of (Specimen, Literature Occurrence, Human Observation, Observation)",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "Year is greater than or equal to 1991",
 "Year is less than or equal to 2025"
 ]
}

 The dataset includes 6 records from 2 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0090932-250717081556266/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.67hq5e
title: Occurrence Download

description: A dataset containing 1803 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Crypturellus erythropus)",
 "HasCoordinate is true",
 "OccurrenceStatus is Present",
 "License is one of (CC-BY 4.0, CC0 1.0)"
 ]
}

 The dataset includes 1803 records from 17 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0090933-250717081556266/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.267p22
title: Occurrence Download

description: A dataset containing 176 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Crassula helmsii",
 "Country is Germany",
 "HasCoordinate is true"
 ]
}

 The dataset includes 176 records from 11 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0090934-250717081556266/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.b9kdgt
title: Occurrence Download

description: A dataset containing 313 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Crypturellus kerriae)",
 "HasCoordinate is true",
 "OccurrenceStatus is Present",
 "License is one of (CC-BY 4.0, CC0 1.0)"
 ]
}

 The dataset includes 313 records from 3 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0090935-250717081556266/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.5axwyb
title: Occurrence Download

description: A dataset containing 62 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Crassula helmsii",
 "Country is Ireland",
 "HasCoordinate is true"
 ]
}

 The dataset includes 62 records from 8 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0090936-250717081556266/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.d6tc29
title: Occurrence Download

description: A dataset containing 3314 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Crypturellus noctivagus)",
 "HasCoordinate is true",
 "OccurrenceStatus is Present",
 "License is one of (CC-BY 4.0, CC0 1.0)"
 ]
}

 The dataset includes 3314 records from 8 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0090937-250717081556266/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.m64p34
title: Occurrence Download

description: A dataset containing 610 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Centaurea nigra",
 "Country is United States of America",
 "HasCoordinate is true"
 ]
}

 The dataset includes 610 records from 57 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0090939-250717081556266/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.w6jd34
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Gnaphalium polycaulon",
 "Country is Eswatini",
 "HasCoordinate is true"
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0090938-250717081556266/datasets/export for details.
DOI: 10.15468/dl.c9789d
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Paspalum vaginatum",
 "Country is Marshall Islands",
 "HasCoordinate is true"
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0090940-250717081556266/datasets/export for details.