cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.25921/pknx-2497
title: NOAA/WDS Paleoclimatology - Cook - Rock Rift Road Mohonk Lake - TSCA - ITRDB NY011

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: 10.5517/cc7hhsz
title: CCDC 223441: Experimental Crystal Structure Determination

description: Related Article: A.A.Selina, A.E.Zhachkina, S.S.Karlov, A.V.Churakov, G.S.Zaitseva|2004|Heteroat.Chem.|15|169|doi:10.1002/hc.20001
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/pwgg-j247
title: NOAA/WDS Paleoclimatology - Northeast Greenland Ice Stream (NEGIS) 2012 Ice Core Chemistry and Density

description: The Northeast Greenland Ice Stream (NEGIS) is the sole interior Greenlandic ice stream. Fast flow initiates near the summit dome, and the ice stream terminates approximately 1000 km downstream in three large outlet glaciers that calve into the Greenland Sea. To better understand this important system, in the summer of 2012 we drilled a 67 m firn core and conducted ground-based radio-echo sounding (RES) and active-source seismic surveys at a site approximately 150 km downstream from the onset of streaming flow (NEGIS firn core, 75 37.61'N, 35 56.49'W). The site is representative of the upper part of the ice stream, while also being in a crevasse-free area for safe surface operations.

Annual cycles were observed for insoluble dust, sodium and ammonium concentrations and for electrolytic conductivity, allowing a seasonally resolved chronology covering the past 400 yr. Annual layer thicknesses averaged 0.11 m ice equivalent (i.e.) for the period 1607-2011, although accumulation varied between 0.08 and 0.14 m i.e., likely due to flow-related changes in surface topography. Tracing of RES layers from the NGRIP (North Greenland Ice Core Project) ice core site shows that the ice at NEGIS preserves a climatic record of at least the past 51 kyr. We demonstrate that deep ice core drilling in this location can provide a reliable Holocene and late-glacial climate record, as well as helping to constrain the past dynamics and ice-lithosphere interactions of the Greenland Ice Sheet.
description: CFA chemistry, density, accumulation, and annual layer thickness data produced from NEGIS 2012 ice core
DOI: 10.5517/cc7hht0
title: CCDC 223442: Experimental Crystal Structure Determination

description: Related Article: A.A.Selina, A.E.Zhachkina, S.S.Karlov, A.V.Churakov, G.S.Zaitseva|2004|Heteroat.Chem.|15|169|doi:10.1002/hc.20001
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/py2w-k713
title: NOAA/WDS Paleoclimatology - Umbanhowar fire data from Takhilt Nuur, western Mongolia - IMPD MNTHN001

description: Fires are common in grassland regions of the world, and the frequency and severity of fire is linked to climate-driven changes in fuel loads. Western Mongolia is dominated by grasslands but the fire history of this region is largely unknown. We reconstructed modern fire (48 lakes) and historical fires (9 lakes) using sediment charcoal. Modern fuel loads were estimated using a combination of clipped plots, satellite-based estimates of annual aboveground net primary productivity (NPP) and NPP modeled from annual temperature and precipitation. Loss-on-ignition and environmental magnetics of lake sediments were analyzed as proxies for climate. We found little evidence for modern or historical fire in the landscape, as charcoal was absent from the surface sediments of 34 of 48 lakes. Charcoal influxes were uniformly low, averaging from 0.002 to 0.028 mm2/cm2 per yr, over the past 1200 years at nine lakes, and the past 6000-5000 years at two of the lakes with longer sediment records. In the modern landscape, livestock grazing has eliminated most of the fuels necessary to carry a fire, as measured fuel loads (27.3+-4.9 g/m2) were only ~20% of aboveground annual NPP estimated using MODIS Imagery or modeled from climate data. The historical absence of fire may indicate a longer history of intensive grazing than sometimes assumed, and cultural prohibitions against burning may also play a role. Regional summary indicated a >50% decrease in charcoal influxes since AD 1600 at most sites which may be related to lower temperatures or greater aridity during the 'Little Ice Age'. Alternatively this decrease in charcoal influxes may reflect increases in livestock numbers or increased local concentrations because of restrictions on the movement of animals coincident with the establishment of Manchu rule in the late seventeenth century.
DOI: 10.5517/cc7hhv1
title: CCDC 223443: Experimental Crystal Structure Determination

description: Related Article: A.A.Selina, A.E.Zhachkina, S.S.Karlov, A.V.Churakov, G.S.Zaitseva|2004|Heteroat.Chem.|15|169|doi:10.1002/hc.20001
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/cc7p8bh
title: CCDC 228976: Experimental Crystal Structure Determination

description: Related Article: A.B.Sheremetev, J.L.Shamshina, D.E.Dmitriev, D.V.Lyubetskii, M.Yu.Antipin|2004|Heteroat.Chem.|15|199|doi:10.1002/hc.20007
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/py9y-b759
title: NOAA/WDS Paleoclimatology - Allen - Lake Mackenzie - ATCU - ITRDB AUSL042

description: Projected decreases and changes in the seasonal distribution of precipitation will have profound impacts on southeastern Australia, including its ability to generate renewable hydroelectricity. Recent decreases in precipitation over the region may be significant in the context of instrumental records, but the question of whether these decreases are within long-term natural variability remains. To help address this issue, we present December-January streamflow and dam inflow reconstructions for southeastern Australia. These reconstructions for the Tasmanian west coast are based solely on local tree ring chronologies and span up to 1600 years. Nonparametric estimates, however, indicate good model skill for the last 458 years (streamflow) and 478 years (dam inflow). The reconstructions indicate that twentieth century conditions were well within the range of historical variability, and were in fact relatively wet. The period from approximately 1600 to 1750 CE was one of the enhanced variability and a high proportion of low and high flow events occurred in the seventeenth century. There are significant relationships between streamflow and inflow reconstructions and large-scale ocean-atmosphere processes such as ENSO and the Southern Annular Mode. Critically, our two reconstructions rely heavily on new tree ring chronologies based on properties such as tracheid radial diameter, cell wall thickness, and density, underscoring the importance of these different types of chronologies in reconstructions.
description: NOAA Template Raw Measurements file added 2019-01-24. NOAA Template Raw Measurements file added 2019-02-01. 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/cc7nz72
title: CCDC 228694: Experimental Crystal Structure Determination

description: Related Article: I.S.Nizamov, G.G.Sergeenko, I.D.Nizamov, Y.E.Popovich, R.N.Khaibullin, L.A.Al'metkina, B.E.Abalonin, E.S.Batyeva, D.B.Krivolapov, I.A.Litvinov|2004|Heteroat.Chem.|15|225|doi:10.1002/hc.20009
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/paxp-va86
title: NOAA/WDS Paleoclimatology - Eastern Amazon Tree Ring Oxygen Stable Isotopes and Precipitation Reconstruction 1885–2016 CE

description: Recent years have seen strong droughts and floods in the Amazon basin, the largest center of atmospheric convection on land. To assess to what degree these events are extreme in a historical perspective requires accurate and long-term climate data, which are generally lacking for this part of the world. Here, we developed a 131-year oxygen isotope chronology from exactly dated tree rings of Cedrela odorata from the eastern Amazon Basin. The chronology (1885-2016) correlates strongly with observed wet-season rainfall totals (r = -0.71, 1951–2016) and stream discharge over the eastern equatorial Amazon. In contrast to oxygen isotope chronologies further inland that record basin-wide rainfall, our new record provides a good rainfall proxy for the eastern Amazon basin alone and shows that extreme precipitation events are also driven by ENSO.
description: Precipitation reconstruction based on tree rings oxygen stable isotopes from Cedrela odorata trees
      Provided Keywords: Tree rings, oxygen stable isotopes, hydroclimate, Amazon
DOI: 10.5517/cc79hss
title: CCDC 217675: Experimental Crystal Structure Determination

description: Related Article: K.No, Hyun J.Lee, Ki M. Park, Shim S.Lee, Kwan H.Noh, Sung K.Kim, Ji Y.Lee, Jong S.Kim|2004|J.Heterocycl.Chem.|41|211|doi:10.1002/jhet.5570410211
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/pefb-zh53
title: NOAA/WDS Paleoclimatology - North Icelandic Shelf Annually Resolved d18O Data Over the Last Millennium

description: Due to the lack of absolutely-dated oceanographic information prior to the modern instrumental period, there is currently significant debate as to the role played by North Atlantic Ocean dynamics in previous climate transitions (e.g., Medieval Climate Anomaly-Little Ice Age, MCA-LIA). Here we present analyses of a millennial-length, annually-resolved and absolutely-dated marine ?18O archive. Our record of oxygen isotope ratios in the shell of the long-lived marine bivalve Arctica islandica (?18O-shell), from the North Icelandic Shelf, linked to seawater density variability, demonstrate that solar and volcanic forcing coupled with ocean circulation dynamics are key drivers of climate variability over the last millennium. During the pre-industrial period (AD 1000-1800) variability in the sub-polar North Atlantic leads changes in Northern Hemisphere surface air temperatures at multi-decadal timescales indicating that North Atlantic Ocean dynamics played an active role in modulating the response of the atmosphere to solar and volcanic forcing.
description: Precision of d18O measurements: 0.08 per mil. 
Provided Keywords: Arctica islandica, annually-resolved, absolutely-dated, North Atlantic, Iceland
DOI: 10.5517/cc79htt
title: CCDC 217676: Experimental Crystal Structure Determination

description: Related Article: K.No, Hyun J.Lee, Ki M. Park, Shim S.Lee, Kwan H.Noh, Sung K.Kim, Ji Y.Lee, Jong S.Kim|2004|J.Heterocycl.Chem.|41|211|doi:10.1002/jhet.5570410211
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/cc79hvv
title: CCDC 217677: Experimental Crystal Structure Determination

description: Related Article: K.No, Hyun J.Lee, Ki M. Park, Shim S.Lee, Kwan H.Noh, Sung K.Kim, Ji Y.Lee, Jong S.Kim|2004|J.Heterocycl.Chem.|41|211|doi:10.1002/jhet.5570410211
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/pc83-ba38
title: NOAA/WDS Paleoclimatology - Bainbridge Crater Lake, Galápagos 6,000 Year Geochemical and Pollen Data

description: Finely laminated sediments within Bainbridge Crater Lake, Galápagos provide a record of El Niño-Southern Oscillation (ENSO) events over the Holocene. Despite the importance of this sediment record, hypotheses for how climate variability is preserved in the lake sediments have not been tested.  Here we present results of long-term monitoring of the local climate and limnology and a revised interpretation of the sediment record.  Brown-green, organic rich, siliciclastic laminae reflect warm, wet conditions typical of El Niño events, whereas carbonate and gypsum precipitate during cool, dry La Niña events and persistent dry periods, respectively.  Applying this new interpretation, we find ENSO events of both phases were generally less frequent during the mid-Holocene (~6100-4000 cal. years BP) relative to the last ~1500 cal. years.  Abundant carbonate laminations between 3500 and 3000 cal. years BP imply that conditions in the Galápagos region were cool and dry during this period when the tropical Pacific E-W SST gradient likely strengthened.  The frequency of El Niño and La Niña events then intensified dramatically around 1750-2000 cal. years BP, consistent with a weaker SST gradient and an increased frequency of ENSO events in other regional records. This strong interannual variability persisted until ~700 cal. years BP, when ENSO-related variability at the lake decreased as the SST gradient strengthened.  Persistent, dry conditions then dominated between 300 and 50 cal. years BP (AD 1650-1900, ± ~100 years), whereas wetter conditions and frequent El Niño events dominated in the most recent century.
description: Multiproxy lake sediment data from Bainbridge Crater Lake, Galapagos, including laminae counts, XRF elemental analysis, sediment grayscale, and pollen counts and classifications.
DOI: 10.5517/cc6wq70
title: CCDC 205382: Experimental Crystal Structure Determination

description: Related Article: Z.Cs.Gyarmati, P.Csomos, G.Bernath, P.Valtamo, H.Kivela, G.Argay, A.Kalman, K.D.Klika, K.Pihlaja|2004|J.Heterocycl.Chem.|41|187|doi:10.1002/jhet.5570410208
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/pwzb-3a76
title: NOAA/WDS Paleoclimatology - African Tree-Ring 250 Year d13C and Intrinsic Water-Use Efficiency (iWUE)

description: Rising atmospheric CO2 concentrations affect climate directly through radiative effects and indirectly by changing plant water-use efficiency. Under global warming scenarios these widely reported changes will have a substantial impact on future bush encroachment, crop yields, river flow and climate feedbacks. Tree-ring intrinsic water-use efficiency (iWUE) records for Africa show a 24.6% increase over the 20th century. As high iWUE can partly counterbalance projected decreases in regional precipitation, this research has important implications for those involved in water resource management and highlights the need for climate models to take physiological forcing into account.
description: Annual carbon isotope and intrinsic water-use efficiency values from 8 trees from Ethiopia, Namibia, and South Africa
IITRDB15
DOI: 10.5517/cc6wq81
title: CCDC 205383: Experimental Crystal Structure Determination

description: Related Article: Z.Cs.Gyarmati, P.Csomos, G.Bernath, P.Valtamo, H.Kivela, G.Argay, A.Kalman, K.D.Klika, K.Pihlaja|2004|J.Heterocycl.Chem.|41|187|doi:10.1002/jhet.5570410208
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/pt2y-9v79
title: NOAA/WDS Paleoclimatology - Kaiser - Russelfjord Southern End A - PCSI - ITRDB AK7

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 2019-02-08.
DOI: 10.5517/cc5p184
title: CCDC 169175: Experimental Crystal Structure Determination

description: Related Article: R.Kruszynski, W.Wieczorek|2004|Heteroat.Chem.|15|233|doi:10.1002/hc.20008
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/cc6wq92
title: CCDC 205384: Experimental Crystal Structure Determination

description: Related Article: Z.Cs.Gyarmati, P.Csomos, G.Bernath, P.Valtamo, H.Kivela, G.Argay, A.Kalman, K.D.Klika, K.Pihlaja|2004|J.Heterocycl.Chem.|41|187|doi:10.1002/jhet.5570410208
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/p7d2-dg59
title: NOAA/WDS Paleoclimatology - Laguna de Ubaque, Colombia 4,700 Year Sediment Geochemical Data

description: We investigated middle and late Holocene hydroclimate patterns in the Colombian Andes using indicators of watershed erosion (lithic abundance), precipitation intensity (% silt), lake-level variability (organic carbon and nitrogen, % sand, and diatoms), and fire frequency (fossil charcoal) from a ~4700-year-long sediment archive from Laguna de Ubaque, a small sub-alpine lake on the eastern flank of the eastern Colombian Andes. Our results indicate reduced precipitation, low lake levels and increased fire occurrence at Ubaque between 4700 and 3500 cal yr BP (hereafter BP). Precipitation increased and lake levels rose abruptly while fire occurrence decreased between 3500 and 2100 BP, with the exception of a 300-year dry phase between 2800 and 2500 BP. Although wetter than the 4700-3500 BP interval, precipitation decreased, lake levels fell, and fire occurrence increased after 2100 BP, but with high-frequency variability. Comparison of the Ubaque results with other Colombian paleoclimate records (e.g., Lakes Fúquene and La Cocha) supports an antiphase pattern of precipitation between the high/interior Andes and frontal slope sites. This spatial pattern of variability is consistent with modern responses to changes in terrestrial atmospheric convection associated with the so-called “dry island” effect. Further comparison with paleoclimate records from Venezuela suggest that the millennial trend toward increasing frontal slope precipitation is consistent with orbitally induced increases in Andean atmospheric convection. Sub-orbital dry island-like hydroclimate variability suggests other mechanisms that affect Northern Hemisphere convection may act to enhance or diminish this effect on centennial and shorter timescales.
description: Sediment geochemical and physical properties data from Laguna de Ubaque, Colombia for the past 4,700 years. Provided Keywords: Paleolimnology, Sedimentology, Sediment geochemistry, Middle and Late Holocene, Colombia, Paleoclimate
DOI: 10.25921/psf0-ty41
title: NOAA/WDS Paleoclimatology - Upper Ruined Hut Bog, New Zealand 7,700 Year Dust Deposition Data

description: We report rates of Australian dust deposition in New Zealand over the last ~8000 years using records extracted from an ombrotrophic peat bog. The trace element chemistry of deposited dust is used to identify the Australian source areas, and to calculate Australian dust deposition rates in New Zealand. This is used to infer patterns of aridity and climate variability in eastern Australia during the Holocene. Prior to 4800 cal. BP, dust deposition patterns imply that the Australian climate was relatively wet due to an active/persistent monsoon. Southern Australian source regions supplied the majority of dust transported to New Zealand at this time. After 4800 cal. BP the Australian climate became significantly more arid and variable, attributed to the onset of ENSO-type conditions. The Lake Eyre Basin switched on as a dust source, while overall Australian dust deposition in New Zealand increased >4 times. Rates of Australian dust deposition were found to match patterns of increased ENSO variability, which is attributed to the combined effect of enhanced sediment supply to Australian dust source areas (during wet La Niña events) and preferable conditions for dust transport (during El Niño induced drought). Results also show that Australian dust deposition is a significant sedimentary process in New Zealand and is likely to influence both geochemical cycles and soil development suggesting that it may contribute up to 90% of material in the bog.
description: Dust deposition data from Upper Ruined Hut Bog, South Island, New Zealand for the past 7,700 years.