cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5517/cc86v2c
title: CCDC 244902: Experimental Crystal Structure Determination

description: Related Article: R.Pothiraja, M.Sathiyendiran, R.J.Butcher, R.Murugavel|2005|Inorg.Chem.|44|6314|doi:10.1021/ic050742z
description: Related Article: R.Pothiraja, M.Sathiyendiran, R.J.Butcher, R.Murugavel|2004|Inorg.Chem.|43|7585|doi:10.1021/ic048781i
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/m3kv-zv64
title: NOAA/WDS Paleoclimatology - Johnson fire data from Rio Hondo, northern New Mexico - IMPD USRH-001

description: Tree-ring fire scars, tree ages, historical photographs, and historical surveys demonstrate that fire played different ecological roles for centuries across gradients of elevation, forest, and fire regime in the Taos Valley Watersheds. Fire regimes collapsed across these three adjoining watersheds by 1899, leaving all sites without fire for at least 119 years. Historical photographs and quaking aspen (Populus tremuloides Michx.) ages indicate that high-severity fire historically burned at multiple high-elevation subalpine sites in today’s Village of Taos Ski Valley, with large high-severity patches (> 640 ha). Low-severity, frequent (9 – 29 year median interval) surface fires burned in nearby mid-elevation dry conifer forests on south aspects in all watersheds. Fires were associated with drought during the fire year, preceded by wet years, with widespread fires commonly burning synchronously in multiple watersheds during more-severe drought years, including within all three watersheds in 1664, 1715, and 1842. In contrast, recent “large” wildfires have burned within single watersheds and therefore are likely not large in a historical context. Management to promote repeated low-severity fire and associated open forest stand structures is within the historical range of variability in the dry conifer forests of these watersheds, but in the high-elevation, subalpine forests different management approaches are required that balance ecological and socio-economic values while providing for public safety.
description: This site was sampled as part of a project to reconstruct the fire history of the Taos Valley Watersheds in northern New Mexico. These data contain tree ages from 11 plots collected for high-severity fire reconstruction, as well as two associated fire-scarred trees.  The site coordinate is the average of all trees and the area is from the convex hull.  The associated comma separate value format (CSV) file https://www.ncei.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/usrh-001.dat contains establishment information, individual tree locations and tree species.
DOI: 10.5517/cc7xd0j
title: CCDC 235817: Experimental Crystal Structure Determination

description: Related Article: P.Diaz, D.M.P.Mingos, R.Vilar, A.J.P.White, D.J.Williams|2004|Inorg.Chem.|43|7597|doi:10.1021/ic049508j
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/cc7yh6v
title: CCDC 236877: Experimental Crystal Structure Determination

description: Related Article: S.Geremia, L.D.Costanzo, G.Nardin, L.Randaccio, R.Purrello, D.Sciotto, R.Lauceri, F.Pichierri|2004|Inorg.Chem.|43|7579|doi:10.1021/ic049336q
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/mqs8-qe33
title: NOAA/WDS Paleoclimatology - Paleo-pCO2 Database ODP999 1.2 Million Year Boron Isotope and CO2 Data

description: During the Mid-Pleistocene Transition (MPT; 1,200-800 kya), Earth's orbitally paced ice age cycles intensified, lengthened from ~40,000 (~40 ky) to ~100 ky, and became distinctly asymmetrical. Testing hypotheses that implicate changing atmospheric CO2 levels as a driver of the MPT has proven difficult with available observations. Here, we use orbitally resolved, boron isotope CO2 data to show that the glacial to interglacial CO2 difference increased from ~43 to ~75 uatm across the MPT, mainly because of lower glacial CO2 levels. Through carbon cycle modeling, we attribute this decline primarily to the initiation of substantive dust-borne iron fertilization of the Southern Ocean during peak glacial stages. We also observe a twofold steepening of the relationship between sea level and CO2-related climate forcing that is suggestive of a change in the dynamics that govern ice sheet stability, such as that expected from the removal of subglacial regolith or interhemispheric ice sheet phase-locking. We argue that neither ice sheet dynamics nor CO2 change in isolation can explain the MPT. Instead, we infer that the MPT was initiated by a change in ice sheet dynamics and that longer and deeper post-MPT ice ages were sustained by carbon cycle feedbacks related to dust fertilization of the Southern Ocean as a consequence of larger ice sheets.
description: Paleo-CO2 derived from boron isotope measurements on marine sediment core ODP999A for the past 1.2 million years, contributed to the Paleo-pCO2 Database.
DOI: 10.5517/cc7yh7w
title: CCDC 236878: Experimental Crystal Structure Determination

description: Related Article: S.Geremia, L.D.Costanzo, G.Nardin, L.Randaccio, R.Purrello, D.Sciotto, R.Lauceri, F.Pichierri|2004|Inorg.Chem.|43|7579|doi:10.1021/ic049336q
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/m05s-dj83
title: NOAA/WDS Paleoclimatology - Global sediment trap calibration of Mg/Ca in G. ruber white, with associated temperature, salinity and carbonate system data

description: The Mg/Ca of planktic foraminifera Globeriginoides ruber (white) is a widely applied proxy for tropical and sub-tropical sea-surface temperature. The accuracy with which temperature can be reconstructed depends on how accurately relationships between Mg/Ca and temperature and the multiple secondary controls on Mg/Ca are known; however, these relationships remain poorly quantified under oceanic conditions. Here, we present new calibrations based on 440 sediment trap/plankton tow samples from the Atlantic, Pacific and Indian Oceans, including 130 new samples from the Bay of Bengal/Arabian Sea and the tropical Atlantic Ocean. Our results indicate temperature, salinity and the carbonate system all significantly influence Mg/Ca in G. ruber (white). We propose two calibration models: The first model assumes pH is the controlling carbonate system parameter. In this model, Mg/Ca has a temperature sensitivity of 6.0±0.8 %/°C (2s), a salinity sensitivity of 3.3±2.2 %/PSU and a pH sensitivity of -8.3±7.7 %/0.1 pH units; The second model assumes carbonate ion concentration ([CO32-]) is the controlling carbonate system parameter. In this model, Mg/Ca has a temperature sensitivity of 6.7±0.8 %/°C, a salinity sensitivity of 5.0±3.0 %/PSU and a [CO32-] sensitivity of -0.24±0.11 %/µmol kg-1. In both models, the temperature sensitivity is significantly lower than the widely-applied sensitivity of 9.0±0.6 %/°C. Application of our new calibrations to down-core data from the Last Glacial Maximum, considering whole ocean changes in salinity and carbonate chemistry, indicate a cooling of 2.4±1.6 °C in the tropical oceans if pH is the controlling parameter and 1.5±1.4 °C if [CO32-] is the controlling parameter.
description: Data from 'tropical atlantic', NBBT06, CBBT06, SBBT09 and AS02 were generated as part of Gray et al., 2018; see Gray et al., 2018 for details of other references in data table.
     Provided Keywords: Mg/Ca, planktic foraminifera, calibration, SST, salinity, carbonate chemistry, Sediment Trap
DOI: 10.5517/cc7yh8x
title: CCDC 236879: Experimental Crystal Structure Determination

description: Related Article: S.Geremia, L.D.Costanzo, G.Nardin, L.Randaccio, R.Purrello, D.Sciotto, R.Lauceri, F.Pichierri|2004|Inorg.Chem.|43|7579|doi:10.1021/ic049336q
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/cc8b2pb
title: CCDC 248021: Experimental Crystal Structure Determination

description: Related Article: B.K.Santra, Chiu-Mine Hung, Ben-Jie Liaw, Ju-Chun Wang, C.W.Liu|2004|Inorg.Chem.|43|7570|doi:10.1021/ic048791j
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/cc88vt5
title: CCDC 246847: Experimental Crystal Structure Determination

description: Related Article: J.T.Hoffman, B.L.Tran, C.J.Carrano|2006|Dalton Trans.||3822|doi:10.1039/b604751c
description: Related Article: J.T.Hoffman, S.Einwaechter, B.S.Chohan, P.Basu, C.J.Carrano|2004|Inorg.Chem.|43|7573|doi:10.1021/ic048775m
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/m0bk-8p04
title: NOAA/WDS Paleoclimatology - South Sawtooth Lake, Ellesmere Island 2,900 Year Annual Grain Size Data

description: Few annually laminated (varved) lacustrine records exist in the Arctic, but these high-resolution climate archives are needed to better understand abrupt climate change and the natural mode of climate variability of this sensitive region. This paper presents a new high-resolution 2900-year long varved lake sediment record from the Fosheim Peninsula, Ellesmere Island. The varve chronology is based on multiple varve counts made on high-resolution scanning electron microscope images of overlapping sediment thin sections, and is supported by several independent dating techniques, including 137Cs and 210Pb analysis, one optically stimulated luminescence age located close to the bottom of the composite sequence, and comparison between paleomagnetic variations of this record and the longest High-Arctic varve record, Lower Murray Lake, which confirms the reliability of the Sawtooth chronology. High-resolution backscattered images examined under a scanning electron microscope (SEM) were crucial to giving a more detailed view of sedimentation processes in the lake and thus help to delineate varves more precisely than in conventional image analysis. Fine-scale geochemical analysis reveals that lake sedimentation is mainly clastic and that elemental geochemistry is influenced by grain-size. Principal component analysis of multiple proxies and the coarse grain-size fraction of South Sawtooth Lake display similar fluctuations to the nearby Agassiz Ice Cap d18O record, including lower values during the Little Ice Age cold period. These results show this new high-resolution and continuous record has a reliable varve chronology and is sensitive to temperature variability. South Sawtooth Lake's mean sedimentation rate of 1.67 mm a-1 is higher than any other sedimentary sequence in the High Arctic providing a unique opportunity for extracting new, high-resolution paleoclimatological and paleoenvironmental record in a region where few other records currently exist.
description: Scanning Electron Microscope grain size data at annual resolution from a varved sediment core collected in South Sawtooth Lake, Ellesmere Island, Nunavut, Canada, for the past 2,900 years
DOI: 10.5517/cc88vv6
title: CCDC 246848: Experimental Crystal Structure Determination

description: Related Article: J.T.Hoffman, B.L.Tran, C.J.Carrano|2006|Dalton Trans.||3822|doi:10.1039/b604751c
description: Related Article: J.T.Hoffman, S.Einwaechter, B.S.Chohan, P.Basu, C.J.Carrano|2004|Inorg.Chem.|43|7573|doi:10.1021/ic048775m
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/m5e0-5p47
title: NOAA/WDS Paleoclimatology - Grenzgletscher, Swiss Alps 1980-1994 Ice Core Trace Element Data

description: Past atmospheric pollution can be reconstructed from ice core trace element records retrieved from mountain glaciers. However, the current global temperature increase can result in post-depositional melt processes, significantly altering the originally stored information. Here, we present a comprehensive study on the behaviour of 35 trace elements (TEs) during meltwater percolation in a high-Alpine ice core segment from upper Grenzgletscher, Switzerland. Some TEs revealed significant concentration depletion, whereas others were well preserved depending on their water solubility and location at the grain scale. TEs present in insoluble minerals, typically enriched at grain boundaries, were found to be mostly preserved because their insolubility in water results in immobility with meltwater percolation. Water-soluble TEs revealed a variable meltwater-mobility. Whereas ultra-TEs tend to be preserved, likely due to incorporation into the ice lattice, abundant TEs are prone to relocation from grain-boundary regions. We propose that at Alpine sites, Ag, Al, Bi, Cu, Cs, Fe, Li, Mo, Pb, Rb, Sb, Th, Tl, U, V, W, Zr and the rare-earth elements may still be applicable as robust environmental proxies even if partial melting occurred, whereas Ba, Ca, Cd Co, Mg, Mn, Na, Ni, Sr and Zn are prone to significant depletion.
description: 35 trace elements were measured in a 50 m segment of an ice core from upper Grenzgletscher, Switzerland covering the period 1980-1994
DOI: 10.5517/cc776m8
title: CCDC 215469: Experimental Crystal Structure Determination

description: Related Article: J.M.Mahoney, A.M.Beatty, B.D.Smith|2004|Inorg.Chem.|43|7617|doi:10.1021/ic049066b
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/cc88vw7
title: CCDC 246849: Experimental Crystal Structure Determination

description: Related Article: J.T.Hoffman, B.L.Tran, C.J.Carrano|2006|Dalton Trans.||3822|doi:10.1039/b604751c
description: Related Article: J.T.Hoffman, S.Einwaechter, B.S.Chohan, P.Basu, C.J.Carrano|2004|Inorg.Chem.|43|7573|doi:10.1021/ic048775m
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/mdxp-sp79
title: NOAA/WDS Paleoclimatology - Azpeleta Tarancón fire data from Turkey Pen, south central New Mexico - IMPD USTP-001

description: Records of past fire occurrence from tree rings, charcoal found in lake sediments, and other proxies. Parameter keywords describe what was measured in this data set.  Additional summary information can be found in the abstracts of papers listed in the data set citations.  Additional information on the International Multiproxy Database (IMPD) data set procedures are also available.

description: This site was sampled to assess the spatiotemporal variability of fire regimes on Mescalero Apache lands and lands adjacent.
DOI: 10.5517/cc776n9
title: CCDC 215470: Experimental Crystal Structure Determination

description: Related Article: J.M.Mahoney, A.M.Beatty, B.D.Smith|2004|Inorg.Chem.|43|7617|doi:10.1021/ic049066b
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/m5y1-ce04
title: NOAA/WDS Paleoclimatology - Winter North Atlantic Oscillation Index Reconstruction from Tree-Rings since 910 C.E.

description: We develop a new reconstruction of the winter North Atlantic Oscillation (NAO) index using a network of 97 Euro-Mediterranean tree-ring series. The reconstruction covers the period 910-2018 C.E., making it the longest annually resolved estimate of winter NAO variability available. We use nested correlation-weighted principal components regression and the Maximum Entropy Bootstrap method to generate a 2400-member ensemble of reconstructions for estimating the final reconstruction and its quantile uncertainties. Extensive validation testing of the new reconstruction against data withheld from the calibration exercise demonstrates its skill. The skill level of the new reconstruction is also an improvement over two NAO reconstructions published earlier. Spectral analyses indicate that the new reconstruction behaves like a "white noise" process with intermittent band-limited power, suggesting that the winter NAO is stochastically forced. The "white noise" properties of our reconstruction are also shown to be consistent with the spectral properties of long instrumental NAO indices extending back to 1781 and NAO indices extracted from a large number of forced climate model runs covering the last millennium. In contrast, an annually resolved multi-proxy NAO reconstruction of comparable length, based in part on speleothem data, behaves more like externally forced "red noise" process, which is inconsistent with our reconstruction, long observations, and forced model runs.
description: In the NAO reconstruction data table, -05%CL is an amount to be subtracted from the median and +95%CL is an amount to be added to the median.
DOI: 10.5517/cc8f0th
title: CCDC 250846: Experimental Crystal Structure Determination

description: Related Article: D.Noveski, T.Braun, B.Neumann, A.Stammler, H.-G.Stammler|2004|Dalton Trans.||4106|doi:10.1039/b414734k
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/m25a-qe74
title: NOAA/WDS Paleoclimatology - Marquardt - Mt. Lemmon mixed-needle - PIAZ - ITRDB AZ604

description: Rising temperatures and changes in precipitation may affect plant responses, and mountainous regions in particular are sensitive to the impacts of climate change. The Santa Catalina Mountains, near Tucson, Arizona, USA, are among the best known Madrean Sky Islands, which are defined by pine-oak forests. We compared the sensitivity and temporal stability of climate-growth relationships to quantify the growth responses of sympatric taxa of ponderosa pine to changing climate. Three taxa (three-needle, mixed-needle, and five-needle types) collected from southern slopes of two contact zones (Mt. Lemmon, Mt. Bigelow) were evaluated. Positive climate-growth correlations in these semiarid high-elevation pine forests indicated a seasonal shift from summer- to spring-dominant precipitation since 1950, which is a critical time for reproduction. Mixed- and five-needle types responded to winter precipitation, and growth was reduced for the five-needle type when spring conditions were dry. Growth trends in response to temperature and specific to site were observed, which indicated the climate signal can be weakened when data are combined into a single chronology. Significant fluctuations in temperature-growth correlations since 1950 occurred for all needle types. These results demonstrated a dramatic shift in sensitivity of annual tree growth to the seasonality of the limiting factor, and a climatic trend that increases local moisture stress may impact the stability of climate-growth relationships. Moreover, output from temperature-growth analyses based on ring-width data (for example from semiarid sites) that does not account for positive and negative growth trends may be adversely affected, potentially impacting climate reconstructions.
description: Sky Island Pines, Arizona (USA): Mixed-needle Pinus ponderosa var. brachyptera. NOAA Template Raw Measurements file added 2020-03-09.
DOI: 10.5517/cc8f0vj
title: CCDC 250847: Experimental Crystal Structure Determination

description: Related Article: D.Noveski, T.Braun, B.Neumann, A.Stammler, H.-G.Stammler|2004|Dalton Trans.||4106|doi:10.1039/b414734k
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/cc8f0wk
title: CCDC 250848: Experimental Crystal Structure Determination

description: Related Article: D.Noveski, T.Braun, B.Neumann, A.Stammler, H.-G.Stammler|2004|Dalton Trans.||4106|doi:10.1039/b414734k
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.