cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.25921/w5m9-8s22
title: NOAA/WDS Paleoclimatology - Rice Lake, North Dakota 2,000 Year Ostracode Mg/Ca Data

description: A 2100-yr decadal-resolution salinity and aridity proxy record of lacustrine ostracode-shell Mg/Ca ratios from a closed-basin lake in the northern Great Plains shows statistically significant periodicities of ~400, 200, 130, and 100 yr. These periodicities are similar to the three principal solar-oscillation periods (420, 218, 143 yr) as inferred from the atmospheric radiocarbon record, suggesting strong solar forcing of century-scale drought frequency with a fundamental 400-yr period and its 2nd, 3rd, and 4th harmonics. Our proxy record correlates visually and statistically (cross-spectral analysis) with the atmospheric D14C record (solar proxy) and the GISP2 (Greenland Ice Sheet Project Two) d18O record (climate proxy), showing that solar minima are in phase with drought periods in the northern Great Plains and cold periods in Greenland. This spectral similarity together with phase correlation indicates a possible teleconnection of century-scale global climate fluctuations through common solar forcing.
description: Juvenile shells (instars A-1, A-2) of Candona rawsoni (a benthic ostracode species with broad salinity tolerance) were used for analysis because juveniles molt predominantly during mid-summer, thus minimizing the effect of intra-annual variation in hydrochemistry.
DOI: 10.5517/cc9rhdx
title: CCDC 290699: Experimental Crystal Structure Determination

description: Related Article: A.E.Enriquez, B.L.Scott, M.P.Neu|2005|Inorg.Chem.|44|7403|doi:10.1021/ic050578f
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/wbg6-gb40
title: NOAA/WDS Paleoclimatology - Baffin Island Lakes Surface Sediment Branched GDGT Data

description: Understanding the causes and potential ecological and environmental impacts of recent and future temperature changes in the Arctic requires a better understanding of long term climate variability. Amongst the most promising new geochemical tools for sedimentary paleotemperature reconstructions are those based on the glycerol diakyl glycerol tetraethers (GDGTs). Although a number of studies have recently developed empirical calibrations for the temperature sensitivity of isoprenoid GDGTs (i.e., the TEX86 index) and the branched GDGTs (i.e., the MBT/CBT index) in mid and low latitude lakes, there is very little data from lakes in the Arctic. Here, we examine the temperature and environmental controls on GDGT abundances in a transect of small lakes (n = 59) distributed across Baffin Island in the eastern Canadian Arctic. Isoprenoid and branched GDGTs are ubiquitous in these lakes. The temperature control on the isoprenoid GDGT distributions is weak, although there is a significant relationship between the branched GDGT distributions and warm season temperature. Furthermore, published relationships developed between branched GDGTs and mean annual air temperatures in tropical lakes yield reconstructed temperatures from Arctic lakes that are consistent with Arctic summer air temperature. This suggests that empirical calibrations from branched GDGTs in lakes reflect the seasonality of branched GDGT production. For example, at low latitudes there is little seasonality in temperature, and branched GDGT production records air temperatures throughout the year. In the Arctic however, branched GDGTs are likely produced in summer, when the temperatures are warmest, sunlight hours are greatest and ice cover is diminished. Due to the extreme seasonality and short window of Arctic productivity, the use of branched GDGTs for summer paleotemperature reconstructions likely remains robust back through time. However, interpretations of paleotemperatures from branched GDGTs in temperate lakes may require careful consideration about potential changes in the seasonal timing of branched GDGT production.
description: Calibration of the branched GDGT/temperature relationship 
for lake surface sediments collected on Baffin Island, Arctic Canada.
Data include water temperature and water chemistry measurements for 
60 Baffin Island lakes, plus fractional abundances of iso- and br-GDGTs 
and calculated parameters (TEX86, BIT, MBT, CBT) for lake surface sediments.
DOI: 10.5517/cc9rhfy
title: CCDC 290700: Experimental Crystal Structure Determination

description: Related Article: A.E.Enriquez, B.L.Scott, M.P.Neu|2005|Inorg.Chem.|44|7403|doi:10.1021/ic050578f
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/cc9rhgz
title: CCDC 290701: Experimental Crystal Structure Determination

description: Related Article: A.E.Enriquez, B.L.Scott, M.P.Neu|2005|Inorg.Chem.|44|7403|doi:10.1021/ic050578f
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.ceufck
title: Occurrence Download

description: A dataset containing 6 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Geometry POLYGON((-77.3399 3.63687,-78.28494 3.08061,-78.78736 2.52436,-78.18325 1.70493,-77.49541 2.07577,-77.13654 2.64398,-76.99897 2.88921,-76.93318 3.22416,-76.80757 3.60098,-76.74178 3.93593,-76.95112 4.10341,-77.32794 3.9778,-77.3399 3.63687))",
 "TaxonKey is Crocodylia"
 ]
}

 The dataset includes 6 records from 3 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0024640-251009101135966/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25921/wrpb-fc92
title: NOAA/WDS Paleoclimatology - Moa Park Tree ring width, PAGES Australasia 2k Version

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: Uploaded by R. Neukom, data obtained from NOAA Paleo DB.
	These are not raw data but processed and truncated chronologies. Details see (Neukom and Gergis 2011, The Holocene, DOI: 10.1177/0959683611427335). For the raws contact the authors or check ITRDB.
DOI: 10.5517/cc9rhh0
title: CCDC 290702: Experimental Crystal Structure Determination

description: Related Article: A.E.Enriquez, B.L.Scott, M.P.Neu|2005|Inorg.Chem.|44|7403|doi:10.1021/ic050578f
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/cc9rhj1
title: CCDC 290703: Experimental Crystal Structure Determination

description: Related Article: A.E.Enriquez, B.L.Scott, M.P.Neu|2005|Inorg.Chem.|44|7403|doi:10.1021/ic050578f
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/wc7p-0d26
title: NOAA/WDS Paleoclimatology - Stewart Island Tree ring width, PAGES Australasia 2k Version

description: Long instrumental or proxy climatic records are scarce for the Southern Hemisphere relative to many northern regions, but are essential for a global perspective of past climate variability. In this paper we describe two tree-ring width chronologies of pink pine which are the first published for Stewart Island, New Zealand (47S, 168E), one of the southernmost forested land masses on the globe. A chronology for western-central Stewart Island (Doughboy-Rakeahua) extends from 1682 to 1990; the other, for southern Stewart Island (Pegasus) from 1690 to 1991. Both series are positively correlated with warm-season surface air temperatures for southern New Zealand and vicinity. Although there are shorter intervals of comparable warmth, the highest 20-year periods of growth during the past 300 years occurred during the middle 1950s-1970s, coinciding with record warming since around 1950 in New Zealand. Chronologies developed from two related species: silver pine (Lagarostrobus colensoi) from Ahaura, western South Island, New Zealand, and huon pine (Lagarostrobus franklinii) from Tasmania also indicate recent warming which is unusual, although not statistically unprecedented, within the contexts of the past 642 and 2290 years of record, respectively.
description: Uploaded by R. Neukom, data obtained from original authors
	These are not raw data but processed and truncated chronologies, representing a composite of two or more individual sites. Details see (Neukom and Gergis 2011, The Holocene, DOI: 10.1177/0959683611427335). For the raws contact the authors or/and check ITRDB.
DOI: 10.5517/cc9rhk2
title: CCDC 290704: Experimental Crystal Structure Determination

description: Related Article: A.E.Enriquez, B.L.Scott, M.P.Neu|2005|Inorg.Chem.|44|7403|doi:10.1021/ic050578f
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/cc9s7jt
title: CCDC 291416: Experimental Crystal Structure Determination

description: Related Article: A.W.Kleij, M.Kuil, D.M.Tooke, A.L.Spek, J.N.H.Reek|2005|Inorg.Chem.|44|7696|doi:10.1021/ic050858v
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/w2yr-b204
title: NOAA/WDS Paleoclimatology - GISP2/GRIP Ice Core 210 Year Stacked Oxygen Isotope Data

description: Recent efforts to link the isotopic composition of snow in Greenland with meteorological and climatic parameters have indicated that relatively local information such as observed annual temperatures from coastal Greenland sites, as well as more synoptic scale features such as the North Atlantic Oscillation (NAO) and the temperature seesaw between Jakobshaven, Greenland, and Oslo, Norway, are significantly correlated with d18O and dD values from the past few hundred years measured in ice cores. In this study we review those efforts and then use a new record of isotope values from the Greenland Ice Sheet Project 2 and Greenland Ice Core Project sites at Summit, Greenland, to compare with meteorological and climatic parameters. This new record consists of six individual annually resolved isotopic records which have been average to produce a Summit stacked isotope record. The stacked record is significantly correlated with local Greenland temperatures over the past century (r=0.471), as well as a number of other records including temperatures and pressures from specific locations as well as temperature and pressure patterns such as the temperature seesaw and the North Atlantic Oscillation. A multiple linear regression of the stacked isotope record with a number of meteorological and climatic parameters in the North Atlantic region reveals that five variables contribute significantly to the variance in the isotope record: winter NAO, solar irradiance (as recorded by sunspot numbers), average Greenland coastal temperature, sea surface temperature in the moisture source region for Summit (30-20N), and the annual temperature seesaw between Jakobshaven and Oslo. Combined, these variables yield a correlation coefficient of r=0.71, explaining half of the variance in the stacked isotope record.
description: This file contains stable isotope (delta 18O) data from six ice cores,
five from the area surrounding the GRIP deep ice core, and one from GISP2
(the "B" core).
DOI: 10.5517/cc9s7kv
title: CCDC 291417: Experimental Crystal Structure Determination

description: Related Article: D.Bhattacharya, S.Dey, S.Maji, K.Pal, S.Sarkar|2005|Inorg.Chem.|44|7699|doi:10.1021/ic050890p
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/wn62-9f46
title: NOAA/WDS Paleoclimatology - Paleo-pCO2 Database Early Cenozoic Stomata CO2 Data

description: Currently, there is only one paleo-CO2 record from plant macrofossils that has sufficient stratigraphic resolution to potentially capture a transient spike related to rapid carbon release at the Cretaceous-Paleogene (K-Pg) boundary. Unfortunately, the associated measurements of stomatal index are off-calibration, leading to a qualitative interpretation of >2,300-ppm CO2. Here we reevaluate this record with a paleo-CO2 proxy based on leaf gas exchange principles. We also test the proxy with three living species grown at 500- and 1,000-ppm CO2, including the nearest living relative of the K-Pg fern, and find a mean error rate of ~22%, which is comparable to other leading paleo-CO2 proxies. Our fossils record a ~250-ppm increase in CO2 across the K-Pg boundary from ~625 to ~875 ppm. A small CO2 spike associated with the end-Cretaceous mass extinction is consistent with many temperature records and with carbon cycle modeling of Deccan volcanism and the meteorite impact.
description: Stomata Paleo-CO2 data from Milligan et al. 2019, contributed to the Paleo-pCO2 Database
DOI: 10.5517/cc9s7lw
title: CCDC 291418: Experimental Crystal Structure Determination

description: Related Article: S.Sarkar, D.Bhattacharya|2010|Eur.J.Inorg.Chem.|2010|3429|doi:10.1002/ejic.201000267
description: Related Article: D.Bhattacharya, S.Dey, S.Maji, K.Pal, S.Sarkar|2005|Inorg.Chem.|44|7699|doi:10.1021/ic050890p
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/wt2r-sc81
title: NOAA/WDS Paleoclimatology - Global TEX86 Surface Sediment Database

description: Quantitative estimates of past temperature changes are a cornerstone of paleoclimatology. For a number of marine sediment-based proxies, the accuracy and precision of past temperature reconstructions depends on a spatial calibration of modern surface sediment measurements to overlying water temperatures. Here, we present a database of 1095 surface sediment measurements of TEX86, a temperature proxy based on the relative cyclization of marine archaeal glycerol dialkyl glycerol tetraether (GDGT) lipids. The dataset is archived in a machine-readable format with geospatial information, fractional abundances of lipids (if available), and metadata. We use this new database to update surface and subsurface temperature calibration models for TEX86 and demonstrate the applicability of the TEX86 proxy to past temperature prediction. The TEX86 database confirms that surface sediment GDGT distribution has a strong relationship to temperature, which accounts for over 70% of the variance in the data. Future efforts, made possible by the data presented here, will seek to identify variables with secondary relationships to GDGT distributions, such as archaeal community composition.
description: Global database of modern sediment observations of the TEX86 temperature proxy, an index that describes the relative cyclization of marine archaeal glycerol dialkyl glycerol tetraethers.
DOI: 10.5517/cc9s7mx
title: CCDC 291419: Experimental Crystal Structure Determination

description: Related Article: D.Bhattacharya, S.Dey, S.Maji, K.Pal, S.Sarkar|2005|Inorg.Chem.|44|7699|doi:10.1021/ic050890p
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/cc9s7ny
title: CCDC 291420: Experimental Crystal Structure Determination

description: Related Article: N.A.Eckert, A.Dinescu, T.R.Cundari, P.L.Holland|2005|Inorg.Chem.|44|7702|doi:10.1021/ic0510213
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/cc9s7pz
title: CCDC 291421: Experimental Crystal Structure Determination

description: Related Article: Joo-Eun Jee, S.Eigler, F.Hampel, N.Jux, M.Wolak, A.Zahl, G.Stochel, R.van Eldik|2005|Inorg.Chem.|44|7717|doi:10.1021/ic050924t
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/cc9s7q0
title: CCDC 291422: Experimental Crystal Structure Determination

description: Related Article: M.Khorasani-Motlagh, N.Safari, M.Noroozifar, J.Saffari, M.Biabani, J.S.Reboucas, B.O.Patrick|2005|Inorg.Chem.|44|7762|doi:10.1021/ic050211a
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.nyakqk
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Apterygiformes)",
 "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((110 -80,120 -80,120 -70,110 -70,110 -80))"
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0024641-251009101135966/datasets/export for details.
DOI: 10.25921/wvbk-xc05
title: NOAA/WDS Paleoclimatology - EPICA Dome C Ice Cores 1cm Electric Conductivity Measurements (ECM)

description: As part of the European Project for Ice Coring in Antarctica, a new deep ice core is being drilled at Dome C. Two electrical methods have been used on the core drilled so far: a new design of electrical conductivity method (ECM) instrument, and a traditional dielectric profiler. The two profiles are very similar in both peaks and background, consistent with acidity being the dominant influence on both in this part of the record. The Dome C records have been compared to ECM records from Vostok, and a tentative match has been made between them. This suggests a long-term average ratio of accumulation rate of 1.36 between this Dome C core and Vostok, and that the Dome C core analyzed so far (to 358 m) probably includes the very end of the Glacial-Holocene transition. 
description: Electrical conductivity measurement (ECM) is essentially a measure of d.c. conductivity that has traditionally been carried out by dragging a pair of electrodes with a high voltage between them along a core, and measuring the current between the electrodes (Hammer, l980; Neftel and others, l985). At Dome C, a new system, developed at the University of Bern, was used. In brief, a flat surface was prepared along the 2.2 m length of a core using a horizontal band-saw and a milling device. The electrodes assembly consisted of seven electrodes at a spacing of 8 mm across the core. The electrodes were made of a carbon-doped  silicon  rubber. They were lowered onto the surface of the core, and 350 V was applied across each adjacent pair of electrodes in turn. The current between them was sampled at regular intervals after a settling time, and averaged. The electrodes were lifted and moved l mm along the core before the sequence was repeated.  This procedure yielded six sets of data at l mm resolution. The data presented here are given as conductances averaged to l0 mm and corrected to -l5C (Note that the temperature correction of the EDC99 data between 771.7 m and 2201.6 m is only approximative due to problems with the temperature measurement). Documented major core breaks and ends have been removed from the ECM record. There is a slight offset between EDC96 and EDC99 depths (see Parrenin et al. (2012) Volcanic synchronisation between the EPICA Dome C and Vostok ice cores (Antarctica) 0-145 kyr BP. Climate of the Past, 8 (3), 1031-1045)

References: 
Hammer, C.U. 1980. Acidity of polar ice cores in relation to absolute dating, past volcanism, and radio-echoes. J. Glacial., 25(93), 359-372.

Neftel, A., M. Andree, J. Schwander, B. Stauffer and C. U. Hammer. 1985. Measurements of a kind of dc-conductivity on cores from Dye 3. In Langway, C. C., Jr, H. Oeschger and W. Dansgaard, eds. Greenland  ice core: geophysics, geochemistry, and the environment. Washington, DC, American Geophysical Union, 32-38. (Geophysical Monograph 33.)
DOI: 10.5517/cc9s7r1
title: CCDC 291423: Experimental Crystal Structure Determination

description: Related Article: Cheng-Han Yang, Shih-Wen Li, Yun Chi, Yi-Ming Cheng, Yu-Shan Yeh, Pi-Tai Chou, Gene-Hsiang Li, Chih-Hsiang Wang, Ching-Fong Shu|2005|Inorg.Chem.|44|7770|doi:10.1021/ic050311g
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.