cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.15468/dl.t9wca9
title: Occurrence Download

description: A dataset containing 4 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Azorinus abbreviatus",
 "HasCoordinate is true",
 "BasisOfRecord is one of (Observation, Machine Observation, Human Observation, Occurrence evidence)",
 {
 "not" : {
 "OccurrenceStatus" : [
 "is one of (Absent)"
 ]
 }
 }
 ]
}

 The dataset includes 4 records from 3 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0006117-251009101135966/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25921/a2vv-rt62
title: NOAA/WDS Paleoclimatology - Sun - Ertan C1 - PIYU - ITRDB CHIN076

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: Climatology - analysis on the climatic difference of micro-topographical sites NOAA Template Raw Measurements file added 2020-01-15. 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: 10.5517/cc5yfcw
title: CCDC 177238: Experimental Crystal Structure Determination

description: Related Article: A.Visnjevac, N.Basaric, B.Kojic-Prodic, M.Sindler-Kulyk|2001|Acta Crystallogr.,Sect.E:Struct.Rep.Online|57|o1252|doi:10.1107/S1600536801020153
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc5yfdx
title: CCDC 177239: Experimental Crystal Structure Determination

description: Related Article: M.J.Dianez, M.D.Estrada, A.Lopez-Castro, S.Perez-Garrido|2001|Acta Crystallogr.,Sect.E:Struct.Rep.Online|57|o1255|doi:10.1107/S1600536801019559
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc5yffy
title: CCDC 177240: Experimental Crystal Structure Determination

description: Related Article: A.J.Blake, S.J.Hill, P.Hubberstey|2001|Acta Crystallogr.,Sect.E:Struct.Rep.Online|57|o1258|doi:10.1107/S1600536801020074
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.25921/advk-gk09
title: NOAA/WDS Paleoclimatology - Baffin Island 1400 Year Ice Margin Radiocarbon Data

description: Northern Hemisphere summer temperatures over the past 8000 years have been paced by the slow decrease in summer insolation resulting from the precession of the equinoxes. However, the causes of superposed century-scale cold summer anomalies, of which the Little Ice Age (LIA) is the most extreme, remain debated, largely because the natural forcings are either weak or, in the case of volcanism, short lived. Here we present precisely dated records of ice-cap growth from Arctic Canada and Iceland showing that LIA summer cold and ice growth began abruptly between 1275 and 1300 AD, followed by a substantial intensification 1430-1455 AD. Intervals of sudden ice growth coincide with two of the most volcanically perturbed half centuries of the past millennium.  A transient climate model simulation shows that explosive volcanism produces abrupt summer cooling at these times, and that cold summers can be maintained by sea-ice/ocean feedbacks long after volcanic aerosols are removed. Our results suggest that the onset of the LIA can be linked to an unusual 50-year-long episode with four large sulfur-rich explosive eruptions, each with global sulfate loading >60 Tg. The persistence of cold summers is best explained by consequent sea-ice/ocean feedbacks during a hemispheric summer insolation minimum; large changes in solar irradiance are not required.
description: Radiocarbon dates on rooted vegetation revealed by receding ice 
collected on Baffin Island, Arctic Canada. These data provide 
a history of snowline lowering dates, which are highly correlated 
with Arctic summer temperatures. 

Samples from Baffin Island, Arctic Canada: ~67 - 71ºN, ~74 - 82ºW
DOI: 10.25921/a701-yj40
title: NOAA/WDS Paleoclimatology - Lake Elsinore, California Late Glacial Biomarker and Isotope Data

description: Reconstructions of past hydroclimate provide a means to understand precipitation responses to global ocean-atmosphere climate dynamics beyond the scope of that in the instrumental record. Late glacial climate was characterized by abrupt variability in ice and ocean dynamics, however the implications for hydroclimate are not as well known. Here we present organic geochemical proxy evidence for precipitation isotopes based on plant leaf wax hydrogen isotopic compositions (dDwax) and temperature proxy evidence based upon the branched glycerol dialkyl glycerol tetraethers (brGDGTs), that derive from the membrane lipids of bacteria, each extracted from a sedimentary archive in Lake Elsinore, California spanning 32-9 ka. We add proxy evidence for vegetation and salinity from additional biomarker analyses and compare to prior pollen and sedimentological evidence from the same core. Our record indicates a strong deglacial warming of 10C in Lake Elsinore (beginning at 14.5 ka) that accompanied a D-enrichment of precipitation of +90permil and more C4 vegetation (12-10 ka), after a cold, wet and C3-dominated phase (20-14.5 ka), indicating winter-dominated precipitation during the Last Glacial Maximum and Heinrich Stadial 1. During the late glacial (32-20 ka) we find abrupt variability, with precipitation isotopic shifts (~70 permil) that are independent of temperature swings implicating changes in storm track, rather than local temperature as drivers of the precipitation isotope signal. Temperature is however not irrelevant for hydroclimate: we find extreme warmth at 29.4 ka and 26.8 ka, the latter coincident with existing reports of an extended dry period (27.5-25.5 ka), suggesting a long hot and dry interlude during the generally cooler glacial period. We compare dDwax with speleothem d18O from Nevada, also within the winter-dominated precipitation region. Our results corroborate the Last Glacial Maximum and deglacial signals, and fill gaps revealing storm-track instability from 32-20 ka, however the pacing and magnitude of the biomarker signals merit cautious interpretation.
description: Biomarker (plant wax carbon and hydrogen isotopes and GDGTs) data and temperature reconstruction from sediments collected in Lake Elsinore, California, for 32-9 ka BP.
DOI: 10.25921/a5cr-bg89
title: NOAA/WDS Paleoclimatology - Oregon Caves National Monument 13,000 Year Stalagmite Stable Isotope Data

description: Water resources in western North America depend on winter precipitation, yet our knowledge of its sensitivity to climate change remains limited. Similarly, understanding the potential for future loss of winter snow pack requires a longer perspective on natural climate variability. Here we use stable isotopes from a speleothem in southwestern Oregon to reconstruct winter climate change for much of the past 13,000 years. We find that on millennial time scales there were abrupt transitions between warm-dry and cold-wet regimes. Temperature and precipitation changes on multi-decadal to century timescales are consistent with ocean-atmosphere interactions that arise from mechanisms similar to the Pacific Decadal Oscillation. Extreme cold-wet and warm-dry events that punctuated the Holocene appear to be sensitive to solar forcing, possibly through the influence of the equatorial Pacific on the winter storm tracks reaching the US Pacific Northwest region.
description: Oxygen and carbon stable isotope data from stalagmite OCN02-1 collected in Oregon Caves National Monument
DOI: 10.25921/adgx-pd50
title: NOAA/WDS Paleoclimatology - Bräker - Haslenau - FREX - ITRDB SWIT248

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 2019-02-05.
DOI: 10.25921/amr1-py88
title: NOAA/WDS Paleoclimatology - North Atlantic 2000 Year Relative Sea Level Data

description: We present new sea-level reconstructions for the past 2100 y based on salt-marsh sedimentary sequences from the US Atlantic coast. The data from North Carolina reveal four phases of persistent sea-level change after correction for glacial isostatic adjustment. Sea level was stable from at least BC 100 until AD 950. Sea level then increased for 400 y at a rate of 0.6 mm/y, followed by a further period of stable, or slightly falling, sea level that persisted until the late 19th century. Since then, sea level has risen at an average rate of 2.1 mm/y, representing the steepest century-scale increase of the past two millennia. This rate was initiated between AD 1865 and 1892. Using an extended semiempirical modeling approach, we show that these sea-level changes are consistent with global temperature for at least the past millennium.
description: North Atlantic relative sea level data points from the east coast 
of the United States, in North Carolina (Sand Point and Tump Point) 
and at Wood Island, Massachusetts. 

In North Carolina, a modern dataset of 193 surface samples 
collected from 10 salt marshes  was used to develop transfer
functions to quantify the relationship between foraminifera 
and elevation. We used these transfer functions to estimate 
paleomarsh elevation (PME) at Sand Point and Tump Point, 
North Carolina. PME is the elevation at which a sample formed 
with respect to its contemporary sea level. Foraminifera 
preserved in 1 cm thick samples from the Sand Point and Tump 
Point cores provided the basis for estimating PME. 
To reconstruct relative sea level (RSL), estimated PME was 
subtracted from the measured altitude of each sample. 

At Wood Island (Massachusetts), salt-marsh plants were used
as sea-level indicators. The modern mean elevation of Juncus
geradii (Jg), Spartina patens (Sp), and Distichlis spicata (Ds) 
was estimated by measuring stands at the Wood Island site. 
Multiple, stratigraphically ordered, samples were recovered 
along the boundary between a gently sloping granite erratic 
and overlying salt-marsh sediments. Identifiable remains 
of Jg, Sp, and Ds were used to provide an estimate of PME.
DOI: 10.25921/aw1h-0640
title: NOAA/WDS Paleoclimatology - Pederson - Clarks Fork Yellowstone NW - PSME - ITRDB WY039

description: In western North America, snowpack has declined in recent decades, and further losses are projected through the 21st century. Here, we evaluate the uniqueness of recent declines using snowpack reconstructions from 66 tree-ring chronologies in key runoff-generating areas of the Colorado, Columbia, and Missouri River drainages. Over the past millennium, late 20th century snowpack reductions are almost unprecedented in magnitude across the northern Rocky Mountains and in their north-south synchrony across the cordillera. Both the snowpack declines and their synchrony result from unparalleled springtime warming that is due to positive reinforcement of the anthropogenic warming by decadal variability. The increasing role of warming on large-scale snowpack variability and trends foreshadows fundamental impacts on streamflow and water supplies across the western United States.
description: Purpose of Collection: Climatology - Snowpack reconstruction
#  NOAA Template Raw Measurements file added 2019-02-08.
DOI: 10.25921/awmg-1r11
title: NOAA/WDS Paleoclimatology - Alaska Holocene Midge Data and July Temperature Reconstructions

description: Regional climate responses to large-scale forcings, such as precessional changes in solar irradiation and increases in anthropogenic greenhouse gases, may be nonlinear as a result of complex interactions among earth system components. Such nonlinear behaviors constitute a major source of climate "surprises" with important socioeconomic and ecological implications. Paleorecords are key for elucidating patterns and mechanisms of nonlinear responses to radiative forcing, but their utility has been greatly limited by the paucity of quantitative temperature reconstructions. Here we present Holocene July temperature reconstructions on the basis of midge analysis of sediment cores from three Alaskan lakes. Results show that summer temperatures during 10,000-5,500 calibrated years (cal) B.P. were generally lower than modern and that peak summer temperatures around 5,000 were followed by a decreasing trend toward the present. These patterns stand in stark contrast with the trend of precessional insolation, which decreased by ~10% from 10,000 y ago to the present. Cool summers before 5,500 cal B.P. coincided with extensive summer ice cover in the western Arctic Ocean, persistence of a positive phase of the Arctic Oscillation, predominantly La Niña-like conditions, and variation in the position of the Alaskan treeline. These results illustrate nonlinear responses of summer temperatures to Holocene insolation radiative forcing in the Alaskan sub-Arctic, possibly because of state changes in the Arctic Oscillation and El Niño-Southern Oscillation and associated land-atmosphere-ocean feedbacks.
description: Holocene midge data and midge-inferred july temperatures from 3 lakes 
in Alaska, USA.  Chironomid data are expressed as raw headcapsule counts. 
Taxonomy follows Barley et al. (2006).
DOI: 10.25921/ar8a-4094
title: NOAA/WDS Paleoclimatology - Cook - Cold River - TSCA - ITRDB MA017

description: Six water emergencies have occurred since 1981 for the New York City region (NYC) despite: 1) its perhumid climate, 2) substantial conservation of water since 1979 and 3) meteorological data showing little severe or extreme drought since 1970. We reconstruct 472 years of moisture availability for the NYC watershed to place these emergencies in long-term hydroclimatic context. Using nested reconstruction techniques, 32 tree-ring chronologies comprised of 12 species account for up to 66.2% of the average May-August Palmer Drought Severity Index. Verification statistics indicate good statistical skill from 1531-2003. The use of multiple tree species, including rarely-used species that can sometimes occur on mesic sites like Liriodendron tulipifera, Betula lenta and Carya spp., seems to aid reconstruction skill. Importantly, the reconstruction captures pluvial events in the instrumental record nearly as well as drought events and is significantly correlated to precipitation over much of the northeastern US. While the mid-1960s drought is a severe drought in the context of the new reconstruction, the region experienced repeated droughts of similar intensity, but greater duration during the 16th and 17th centuries. The full record reveals a trend towards more pluvial conditions since ca 1800 that is accentuated by an unprecedented, 43-year pluvial event that continues through 2011. In the context of the current pluvial, decreasing water usage, but increasing extra-urban pressures, it appears that the water supply system for the greater NYC region could be severely stressed if the current water boom shifts towards hydroclimatic regimes like the 16th and 17th centuries.
description: This collection of Tsuga canadensis raw ring widths was made along the Cold River in MA by E. Cook. Given the basic life-history traits and growth patterns of eastern hemlock, it is best to consider detrending these raw data with closed-canopy or forest interior conditions in mind.
# 
# For the Pederson et al. (2012) paper, these data were combined with the Pack Forest (Tsuga canadensis) data that are accessible in the ITRDB.
#  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/a7gq-fz02
title: NOAA/WDS Paleoclimatology - Northern Hemisphere 1000 Year Multiproxy Temperature Reconstruction

description: Previous studies have either exclusively used annual tree-ring data or have combined tree-ring series with other, lower temporal resolution proxy series. Both approaches can lead to significant uncertainties, as tree-rings may underestimate the amplitude of past temperature variations, and the validity of non-annual records cannot be clearly assessed. In this study, we assembled 45 published Northern Hemisphere (NH) temperature proxy records covering the past millennium, each of which satisfied 3 essential criteria: the series must be of annual resolution, span at least a thousand years, and represent an explicit temperature signal. Suitable climate archives included ice cores, varved lake sediments, tree-rings and speleothems. We reconstructed the average annual land temperature series for the NH over the last millennium by applying 3 different reconstruction techniques: (1) principal components (PC) plus second-order autoregressive model (AR2), (2) composite plus scale (CPS) and (3) regularized errors-in-variables approach (EIV). Our reconstruction is in excellent agreement with 6 climate model simulations (including the first 5 models derived from the fifth phase of the Coupled Model Intercomparison Project (CMIP5) and an earth system model of intermediate complexity (LOVECLIM), showing similar temperatures at multi-decadal timescales; however, all simulations appear to underestimate the temperature during the Medieval Warm Period (MWP). A comparison with other NH reconstructions shows that our results are consistent with earlier studies. These results indicate that well-validated annual proxy series should be used to minimize proxy-based artifacts, and that these proxy series contain sufficient information to reconstruct the low-frequency climate variability over the past millennium.
description: Northern Hemisphere 1000 year annual temperature reconstructions based on 45 published temperature proxy records, including ice core, varved lake sediments, tree-rings and speleothem records. The average annual land temperature series for the NH over the last millennium was reconstructed by 3 different reconstruction techniques: (1) 10 principal components (PC10+AR2) plus second-order autoregressive model (AR2), (2) composite plus scale (CPS), and (3) regularized errors-in-variables approach (EIV).  Figure 2 data are Northern Hemisphere (NH) land temperature anomalies (with respect to AD 1961-1990) over the last 1000 yr reconstructed with PC10+AR2 (red solid line), CPS (black solid line) and EIV (blue dashed line). The 3 reconstruction results were smoothed by the loess method (span: 0.01). All models were fitted to the period AD 1850-1998 and reconstructed for AD 998-1849.  Figure 4 data are with 0.05 filtered values for AD 1001-1960. Every series was firstly expressed as anomalies from AD 1850-1960, and was then variance matched using the instrumental data from AD 1850-1960.
DOI: 10.5517/cc5hy0l
title: CCDC 164269: Experimental Crystal Structure Determination

description: Related Article: B.Gabriele, G.Salerno, L.Veltri, M.Costa, C.Massera|2001|Eur.J.Org.Chem.|2001|4607|doi:10.1002/1099-0690(200112)2001:24<4607::AID-EJOC4607>3.0.CO;2-D
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.15468/dl.xvzr8m
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Setaria palmifolia",
 "Country is South Africa",
 "HasCoordinate is true"
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0006118-251009101135966/datasets/export for details.
DOI: 10.25921/axrd-0184
title: NOAA/WDS Paleoclimatology - Li - Xiangcheng - ABFO - ITRDB CHIN021

description: The Asian monsoon system affects more than half of humanity worldwide, yet the dynamical processes that govern its complex spatiotemporal variability are not sufficiently understood to model and predict its behavior, due in part to inadequate long-term climate observations. Here we present the Monsoon Asia Drought Atlas (MADA), a seasonally resolved gridded spatial reconstruction of Asian monsoon drought and pluvials over the past millennium, derived from a network of tree-ring chronologies. MADA provides the spatiotemporal details of known historic monsoon failures and reveals the occurrence, severity, and fingerprint of previously unknown monsoon megadroughts and their close linkages to large-scale patterns of tropical Indo-Pacific sea surface temperatures. MADA thus provides a long-term context for recent monsoon variability that is critically needed for climate modeling, prediction, and attribution.
description: Purpose of Collection:  
# Climatology - precipitation analysis NOAA Template Raw Measurements file added 2019-04-08.
DOI: 10.5517/cc5fz0k
title: CCDC 162378: Experimental Crystal Structure Determination

description: Related Article: R.Herrera, H.A.Jimenez-Vazquez, A.Modelli, D.Jones, B.C.Soderberg, J.Tamariz|2001|Eur.J.Org.Chem.|2001|4657|doi:10.1002/1099-0690(200112)2001:24<4657::AID-EJOC4657>3.0.CO;2-3
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc5shxb
title: CCDC 172512: Experimental Crystal Structure Determination

description: Related Article: J.Holz, R.Sturmer, U.Schmidt, H.-J.Drexler, D.Heller, H.-P.Krimmer, A.Borner|2001|Eur.J.Org.Chem.|2001|4615|doi:10.1002/1099-0690(200112)2001:24<4615::AID-EJOC4615>3.0.CO;2-N
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.