cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5517/cc9s1dh
title: CCDC 291226: Experimental Crystal Structure Determination

description: Related Article: M.Clochard, J.Grundy, B.Donnadieu, F.Mathey|2005|Org.Lett.|7|4511|doi:10.1021/ol051816d
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/t34j-q239
title: NOAA/WDS Paleoclimatology - Holocene Aragonite-Calcite Stalagmite Records from Shennong Cave, Jiangxi Province, China

description: Multiple geochemical proxies (e.g., trace elements, δ18O and δ13C) and precise 230Th ages in speleothems are crucial for conducting robust paleoclimatic reconstructions, but the impact of diagenesis on these proxies and 230Th ages is not well-established. In this study, we investigate the petrography and geochemical composition of six aragonite-calcite stalagmites from Shennong Cave in southeastern China to analyze the transformation from aragonite to calcite (primary versus secondary) and its effects on geochemical proxies and 230Th ages. No aragonite relics are observed in columnar calcite in four aragonite-calcite stalagmites (SN55, SN49, SN104 and SNB1), although traces of aragonite exist between the calcite crystals or grow parallel at the aragonite-calcite borders. This is different from the obvious aragonite relics preserved in secondary mosaic calcite in the other two aragonite-calcite stalagmites (SN3 and SN15). Both mosaic and columnar calcite show various changes in geochemical proxies and 230Th ages compared with primary aragonite. The trend in the geochemical proxies analyzed (trace elements, δ18O and δ13C) of columnar calcite remains consistent with those of aragonite, despite significant differences in their absolute values within the overlapping periods. These differences are due to the different fractionation coefficients of isotopes and trace elements in aragonite and calcite formed under the same solution conditions rather than late diagenesis. The 230Th ages of columnar calcite are similar to those of primary aragonite, and the values of subsamples from the same calcite layer are consistent. In contrast, the trace elements and δ13C values of mosaic calcite are similar to those of primary aragonite, while its 230Th age significantly differs from that of primary aragonite, exhibiting no consistent patterns. Therefore, these geochemical characteristics of columnar calcite are significantly different from secondary mosaic calcite, indicating that the columnar calcite in these four aragonite-calcite stalagmites is primary. A comparison of trace elements and δ13C records between aragonite-calcite and pure aragonite stalagmites during the overlapping period further confirms that these columnar calcites are primary. Their geochemical proxies can be used for paleoclimate reconstruction after careful evaluation, and the transformation from aragonite to columnar calcite is caused by increased precipitation. However, due to age and geochemical proxies change, secondary mosaic calcite is unsuitable for paleoclimate reconstruction, unlike columnar calcite. This study provides competent evidence to identify whether calcite in aragonite-calcite stalagmites is primary versus secondary and whether it can be used for paleoclimatic reconstruction.
description: Aragonite to Calcite Transformation. Core Lengths - SN55: 290 mm, SN49: 437 mm, SNB1: 780 mm, SN3: 260 mm, SN15: 160 mm, SN104: 90 mm.
DOI: 10.5517/cc9s215
title: CCDC 291246: Experimental Crystal Structure Determination

description: Related Article: M.D.Fryzuk, M.J.Petrella, B.O.Patrick|2005|Organometallics|24|5440|doi:10.1021/om050574i
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/cc9s226
title: CCDC 291247: Experimental Crystal Structure Determination

description: Related Article: M.D.Fryzuk, M.J.Petrella, B.O.Patrick|2005|Organometallics|24|5440|doi:10.1021/om050574i
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/tt91-kj75
title: NOAA/WDS Paleoclimatology - Vacchiano - Torgnon - LADE - ITRDB ITA066

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
DOI: 10.5517/cc9s237
title: CCDC 291248: Experimental Crystal Structure Determination

description: Related Article: M.D.Fryzuk, M.J.Petrella, B.O.Patrick|2005|Organometallics|24|5440|doi:10.1021/om050574i
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/tpvj-tm15
title: NOAA/WDS Paleoclimatology - Arlington Reef, Great Barrier Reef, Porites sp. isotopes and trace elements 2006-2010 CE

description: The trace metal element zinc (Zn) participates in coral metabolic processes and therefore accumulates in their skeletons. These metabolic processes are largely controlled by the changes of environment in which they live, so Zn isotopic compositions (d66Zn) in coral skeletons may possibly serve as potential tracers for climate and environmental changes. In this study, we first reported the d66Zn in shallow-water coral skeletons by investigating with monthly resolution d66Zn values in the skeleton of a modern Porites coral 10AR2 from the Great Barrier Reef of Australia, and the bulk skeletal d66Zn values of several coral species from the Luhuitou Reef of Hainan Island in the northern South China Sea. Correlations between d66Zn and other climate and environmental proxies (Sr/Ca, d18O, and d13C) and instrumental environmental variables (sea surface temperature, river runoff, and chlorophyll a) are poor, suggesting that the effects of external environmental changes on monthly variations in d66Zn in coral skeletons are not significant. However, significant interspecific differences in the skeletal d66Zn of corals growing under identical external environments may suggest the occurrence of biologically controlled d66Zn fractionation during coral skeletons formation. In addition, the monthly d66Zn in the 10AR2 coral skeleton roughly decreases with increasing temperature, which is in agreement with the recent finding that d66Zn in coral tissues and zooxanthellae increases with increasing temperature and can serve as a proxy for thermal stress in corals. We thus suggest that the complicated coral internal biological processes hinder the use of skeletal d66Zn as a climate and environmental proxy.
description: Data from Xiao et al. (2020) and age model created for archiving in the Great Barrier Reef Coral Skeletal Records Database (GBRCD).
      Provided Keywords: Great Barrier Reef, Porites sp., Zinc
DOI: 10.5517/cc9s248
title: CCDC 291249: Experimental Crystal Structure Determination

description: Related Article: M.D.Fryzuk, M.J.Petrella, B.O.Patrick|2005|Organometallics|24|5440|doi:10.1021/om050574i
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/cc9s259
title: CCDC 291250: Experimental Crystal Structure Determination

description: Related Article: M.D.Fryzuk, M.J.Petrella, B.O.Patrick|2005|Organometallics|24|5440|doi:10.1021/om050574i
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/t2t7-ad71
title: NOAA/WDS Paleoclimatology - Lake Sediment Geochemical Data from Guatemala

description: Continued global warming is expected to result in reduced precipitation and a drier climate in Central America. Projections of future changes are highly uncertain, however, due to the spatial resolution limitations of models and insufficient observational data coverage across space and time. Paleoclimate proxy data are therefore critical for understanding regional climate responses during times of global climate reorganization. Here we present two lake-sediment based records of precipitation variability in Guatemala along with a synthesis of Central American hydroclimate records spanning the last millennium (800-2000 CE). The synthesis reveals that regional climate responses have been strikingly heterogeneous, even over relatively short distances. Our analysis further suggests that shifts in the mean position of the Intertropical Convergence Zone, which have been invoked by numerous studies to explain variability in Central American and circum-Caribbean proxy records, cannot alone explain the observed pattern of hydroclimate variability. Instead, interactions between several ocean-atmosphere processes and their disparate influences across variable topography have resulted in complex precipitation responses. These complexities highlight the difficulty of reconstructing past precipitation changes across Central America and point to the need for additional paleo-record development and analysis before the relationships between external forcing and hydroclimate change can be robustly determined. Such efforts should help anchor model-based predictions of future responses to continued global warming.
DOI: 10.5517/cc9s26b
title: CCDC 291251: Experimental Crystal Structure Determination

description: Related Article: D.A.Kissounko, I.A.Guzei, S.H.Gellman, S.S.Stahl|2005|Organometallics|24|5208|doi:10.1021/om050768y
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/t0zv-kv14
title: NOAA/WDS Paleoclimatology - Dasuopu, China 500 Year Ice Core Trace Element Data

description: Because few ice core records from the Himalayas exist, understanding of the onset and timing of the human impact on the atmosphere of the "roof of the world" remains poorly constrained. We report a continuous 500-y trace metal ice core record from the Dasuopu glacier (7,200 m, central Himalayas), the highest drilling site on Earth. We show that an early contamination from toxic trace metals, particularly Cd, Cr, Mo, Ni, Sb, and Zn, emerged at high elevation in the Himalayas at the onset of the European Industrial Revolution (~1780 AD). This was amplified by the intensification of the snow accumulation (+50% at Dasuopu) likely linked to the meridional displacement of the winter westerlies from 1810 until 1880 AD. During this period, the flux and crustal enrichment factors of the toxic trace metals were augmented by factors of 2 to 4 and 2 to 6, respectively. We suggest this contamination was the consequence of the long-range transport and wet deposition of fly ash from the combustion of coal (likely from Western Europe where it was almost entirely produced and used during the 19th century) with a possible contribution from the synchronous increase in biomass burning emissions from deforestation in the Northern Hemisphere. The snow accumulation decreased and dry winters were reestablished in Dasuopu after 1880 AD when lower than expected toxic metal levels were recorded. This indicates that contamination on the top of the Himalayas depended primarily on multidecadal changes in atmospheric circulation and secondarily on variations in emission sources during the last 200 y.
description: Trace element data from ice cores collected in Dasuopu, China. Raw concentration data are at annual or decadal resolution from Dasuopu 1997 core #3 for the past 500 years, and are based on freshly cut ice samples. Included are also 10-year median concentrations, 10-year fluxes of trace elements, and 10-year median crustal enrichment factors (EFc). 10-year median concentrations and EFc are calculated from the individual corresponding sample values as computed in Beaudon et al. Sci. Total Environ. 601-602:1349-1363. 10 year fluxes are calculated in the ice (1499-1950 AD) as: 10-year median of annual fluxes. Annual fluxes are obtained by using reconstructed annual snow accumulation and average annual trace element concentrations from continous ice samples. 10 year fluxes are calculated in firn (1950-1992 AD) using 10-year median of the reconstructed annual snow accumulation and 10 year-median of discrete trace element concentrations. Time scale and reconstructed annual snow accumulation records are from Thompson et al. (2000) Science, 289, 1916-1919. Dasuopu Glacier: 28.3833 degrees N, 85.7167 degrees E.
DOI: 10.5517/cc9s27c
title: CCDC 291252: Experimental Crystal Structure Determination

description: Related Article: D.A.Kissounko, I.A.Guzei, S.H.Gellman, S.S.Stahl|2005|Organometallics|24|5208|doi:10.1021/om050768y
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/t9g1-vr70
title: NOAA/WDS Paleoclimatology - Interdecadal Pacific Oscillation SST reconstruction and Fiji coral Sr/Ca record covering 1370 to 1997 CE

description: The southwestern tropical Pacific is a key center for the Interdecadal Pacific Oscillation (IPO), which regulates global climate. This study introduces a groundbreaking 627-year coral Sr/Ca sea surface temperature reconstruction from Fiji, representing the IPO’s southwestern pole. Merging this record with other Fiji and central tropical Pacific records, we reconstruct the SST gradient between the southwestern and central Pacific (SWCP), providing a reliable proxy for IPO variability from 1370 to 1997. This reconstruction reveals distinct centennial-scale temperature trends and insights into Pacific-wide climate impacts and teleconnections. Notably, the 20th century conditions, marked by simultaneous basin-scale warming and weak tropical Pacific zonal-meridional gradients, deviate from trends observed during the past six centuries. Combined with model simulations, our findings reveal that a weak SWCP gradient most markedly affects IPO-related rainfall patterns in the equatorial Pacific. Persistent synchronous western and central Pacific warming rates could lead to further drying climate across the Coral Sea region, adversely affecting Pacific Island nations.
DOI: 10.5517/cc9s28d
title: CCDC 291253: Experimental Crystal Structure Determination

description: Related Article: D.A.Kissounko, I.A.Guzei, S.H.Gellman, S.S.Stahl|2005|Organometallics|24|5208|doi:10.1021/om050768y
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/ccb0ry0
title: CCDC 298652: Experimental Crystal Structure Determination

description: Related Article: D.A.Kissounko, I.A.Guzei, S.H.Gellman, S.S.Stahl|2005|Organometallics|24|5208|doi:10.1021/om050768y
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/cc9s29f
title: CCDC 291254: Experimental Crystal Structure Determination

description: Related Article: P.Crewdson, S.Gambarotta, M.-C.Djoman, I.Korobkov, R.Duchateau|2005|Organometallics|24|5214|doi:10.1021/om050699n
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/t554-e382
title: NOAA/WDS Paleoclimatology - Mašek - 16SS Kokořínsko - PISY - ITRDB CZE049

description: Inter-annual climatically driven growth variability of above-ground biomass compartments (for example, tree stems and foliage) controls the intensity of carbon sequestration into forest ecosystems. However, understanding the differences between the climatic response of stem and foliage at the landscape level is limited. In this study, we examined the climate-growth response of stem and leaf biomass and their relationship for Pinus sylvestris (PISY) and Picea abies (PCAB) in topographically complex landscapes. We used tree-ring width chronologies and time series of the normalized difference vegetation index (NDVI) derived from high-resolution Landsat scenes as proxies for stem and leaf biomass, respectively. We then compared growth variability and climate-growth relationships of both biomass proxies between topographical categories. Our results show that the responses of tree rings to climate differ significantly from those found in NDVI, with the stronger climatic signal observed in tree rings. Topography had distinct but species-specific effects: At moisture-limited PISY stands, stem biomass (tree rings) was strongly topographically driven, and leaf biomass (NDVI) was relatively insensitive to topographic variability. In landscapes close to the climatic optimum of PCAB, the relationship between stem and leaf biomass was weak, and their correlations with climate were often inverse, with no significant effects of topography. Different climatic signals from NDVI and tree rings suggest that the response of canopy and stem growth to climate change might be decoupled. Furthermore, our results hint toward different prioritizations of biomass allocation in trees under stressful conditions which might change allometric relationships between individual tree compartments in the long term.
DOI: 10.25921/tts0-7c40
title: NOAA/WDS Paleoclimatology - Nias, Indonesia Mn/Ca, Y/Ca, and Ba/Ca Coral Data from 2000-2009 CE

description: On 28 March 2005, the Indonesian islands of Nias and Simeulue experienced a powerful Mw 8.6 earthquake and coseismic uplift and subsidence. In areas of coastal uplift (up to ~2.8 m), fringing reef coral communities were killed by exposure, while deeper corals that survived were subjected to habitats with altered runoff, sediment and nutrient regimes. Here we present time-series (2000–2009) of Ba/Ca, Mn/Ca, and Y/Ca variability in massive Porites corals from Nias to assess the environmental impact of a wide range of vertical displacement (+2.5 m to -0.4 m). High-resolution LA-ICP-MS measurements show that skeletal Mn/Ca increased at uplifted sites, regardless of reef type, indicating a post-earthquake increase in suspended sediment delivery. Transient and/or long-term increases in skeletal Y/Ca at all uplift sites support the idea of increased sediment delivery. Coral Ba/Ca and Mn/Ca in lagoonal environments highlight the additional influences of reef bathymetry, wind-driven sediment resuspension, and phytoplankton blooms on coral geochemistry. Together, the results show that the Nias reefs adapted to fundamentally altered hydrographic conditions. We show how centuries of repeated subsidence and uplift during great-earthquake cycles along the Sunda megathrust may have shaped the the modern-day predominance of massive scleractinian corals on the West Sumatran reefs.
description: This dataset contains skeletal Mn/Ca, Ba/Ca, and Y/Ca data for modern Porites sp. NS09-1.8A-2 from Nias, Indonesia as published in Sosdian et al. 2024. We provide raw data by sampling distance with accompanying age assignments reported in decimal years. The primary aim of the study was to document long-term changes in coral geochemistry related to earthquake induced environmental changes.

rovided Keywords: Nias, Indonesia, Porites, elemental ratios, earthquake