cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.25921/rzzc-9s27
title: NOAA/WDS Paleoclimatology - Northern Scandinavia, 138 BC-2006 AD, maximum latewood density, living and subfossil pine, PAGES Euro-Med 2k Version

description: Solar insolation changes, resulting from long-term oscillations of orbital configurations, are an important driver of Holocene climate. The forcing is substantial over the past 2,000
       years, up to four times as large as the 1.6Wm-2 net anthropogenic forcing since 1750, but the trend varies considerably over time, space and with season. Using numerous high-latitude proxy records, slow orbital
       changes have recently been shown6 to gradually force boreal summer temperature cooling over the common era. Here, we present new evidence based on maximum latewood
       density data from northern Scandinavia, indicating that this cooling trend was stronger (-0.31 deg C per 1,000 years, \pm 0.03 deg C) than previously reported, and demonstrate that
       this signature is missing in published tree-ring proxy records. The long-term trend now revealed in maximum latewood density data is in line with coupled general circulation
       models indicating albedo-driven feedback mechanisms and substantial summer cooling over the past two millennia in northern boreal and Arctic latitudes. These findings,
       together with the missing orbital signature in published dendrochronological records, suggest that large-scale nearsurface air-temperature reconstructions9–13 relying on treering
       data may underestimate pre-instrumental temperatures includingwarmth during Medieval and Roman times.
description:   We here develop a 2,000-year summer temperature reconstruction based on 587 high-precision maximum latewood density (MXD) series from northern Scandinavia.
       The record was developed over three years using living and subfossil pine (Pinus sylvestris) trees from 14 lakes and 3 lakeshore sites >65 deg N, making it not only longer but also
       much better replicated than any existing MXD time series (for example, the widely cited Tornetraesk record contains 65 series. We carried out a number of tests to the MXD network
       and noted the robustness of the long-term trends, but also the importance of including living trees from the lakeshore to form a seamless transition to the subfossil material preserved in
       the lakes. Calibration/verification with instrumental data is temporally robust and no evidence for divergence was noted. The final reconstruction (N-scan) was calibrated against
       regional JJA temperature and spans the 138 BC-2006 AD period.
DOI: 10.5517/cc8pnf0
title: CCDC 259142: Experimental Crystal Structure Determination

description: Related Article: June-Ho Jung, S.K.Potluri, Hongming Zhang, P.Wisian-Neilson|2004|Inorg.Chem.|43|7784|doi:10.1021/ic049063z
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/cc8png1
title: CCDC 259143: Experimental Crystal Structure Determination

description: Related Article: J.-P.Costes, G.Novitchi, S.Shova, F.Dahan, B.Donnadieu, J.-P.Tuchagues|2004|Inorg.Chem.|43|7792|doi:10.1021/ic048942i
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/rv6j-9s08
title: NOAA/WDS Paleoclimatology - Quelccaya Ice Cap - Snow Pit Microparticle Data

description: Glaciological results of the continuing investigations of the Quelccaya ice cap located at lat. 13° 56’ S., long. 70° 50’ W., in the Cordillera Oriental of southern Peru are presented. Ice cores to a depth of 15 m have been retrieved from the summit dome (5650 m), middle dome (5543 m), and south dome (5480 m) and sampled in detail for microparticle, oxygen-isotope, and total-β-activity measurements. Results of these core analyses indicate that although the summit of this ice cap is only 300 m above the annual snow line and the firn is temperate, an interpretable stratigraphic record is preserved. The marked seasonal ice stratigraphy is produced by the marked seasonal variation in regional precipitation. High concentrations of microparticles and β- radioactive material occur during the dry season (May-August). Microparticles deposited during the rainy season are larger than those deposited during the dry season. On the Quelccaya ice cap the most negative δ18O values occur during the warmer rainy season (the opposite occurs in polar regions). The near-surface mean δ value of – 21‰ is remarkably low for this tropical site where the measured mean annual air temperature is – 3°C The seasonality of the microparticles, total β activity, and isotope ratios offers the prospect of a climatic ice-core record from this tropical ice cap.
description: Byrd Polar Research Center Microparticle Analyses
References for Quelccaya studies:

Thompson, L.G. (1980) Glaciological investigations of the tropical
Quelccaya Ice Cap, Peru. Journal of Glaciology, 25(91), p. 69-84.

Thompson, L.G., S. Hastenrath and B. Morales (1979) Climatic ice
core record from the tropical Quelccaya Ice Cap. Science,
203(4386), p. 1240-1243.
DOI: 10.5517/cc8pnh2
title: CCDC 259144: Experimental Crystal Structure Determination

description: Related Article: J.-P.Costes, G.Novitchi, S.Shova, F.Dahan, B.Donnadieu, J.-P.Tuchagues|2004|Inorg.Chem.|43|7792|doi:10.1021/ic048942i
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/cc8pnj3
title: CCDC 259145: Experimental Crystal Structure Determination

description: Related Article: J.-P.Costes, G.Novitchi, S.Shova, F.Dahan, B.Donnadieu, J.-P.Tuchagues|2004|Inorg.Chem.|43|7792|doi:10.1021/ic048942i
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/rqah-g540
title: NOAA/WDS Paleoclimatology - Lake Bosumtwi, Ghana 21,000 Year Leaf Wax Hydrogen Isotope Data

description: During the African Humid Period about 14,800 to 5,500 years ago, changes in incoming solar radiation during Northern Hemisphere summers led to the large-scale expansion and subsequent collapse of the African monsoon. Hydrologic reconstructions from arid North Africa show an abrupt onset and termination of the African Humid Period. These abrupt transitions have been invoked in arguments that the African monsoon responds rapidly to gradual forcing as a result of nonlinear land surface feedbacks. Here we present a reconstruction of precipitation in humid tropical West Africa for the past 20,000 years using the hydrogen isotope composition of leaf waxes preserved in sediments from Lake Bosumtwi, Ghana. We show that over much of tropical and subtropical Africa the monsoon responded synchronously and predictably to glacial reorganizations of overturning circulation in the Atlantic Ocean, but the response to the relatively weaker radiative forcing during the African Humid Period was more spatially and temporally complex. A synthesis of hydrologic reconstructions from across Africa shows that the termination of the African Humid Period was locally abrupt, but occurred progressively later at lower latitudes. We propose that this time-transgressive termination of the African Humid Period reflects declining rainfall intensity induced directly by decreasing summer insolation as well as the gradual southward migration of the tropical rainbelt that occurred during this interval.
description: Hydrogen (dD) and carbon (d13C) isotope data from leaf waxes in sediments collected in Lake Bosumtwi, Ghana, covering the past 21,000 years.
DOI: 10.5517/cc8pnk4
title: CCDC 259146: Experimental Crystal Structure Determination

description: Related Article: I.L.Fedushkin, N.M.Khvoinova, A.Yu.Baurin, G.K.Fukin, V.K.Cherkasov, M.P.Bubnov|2004|Inorg.Chem.|43|7807|doi:10.1021/ic048801g
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/cc8pnl5
title: CCDC 259147: Experimental Crystal Structure Determination

description: Related Article: I.L.Fedushkin, N.M.Khvoinova, A.Yu.Baurin, G.K.Fukin, V.K.Cherkasov, M.P.Bubnov|2004|Inorg.Chem.|43|7807|doi:10.1021/ic048801g
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/rdxc-hh81
title: NOAA/WDS Paleoclimatology - Mount Logan, Yukon Ice Core 600 Year Mercury Data

description: Past emissions of the toxic metal mercury (Hg) persist in the global environment, yet these emissions remain poorly constrained by existing data. Ice cores are high-resolution archives of atmospheric deposition that may provide crucial insight into past atmospheric Hg levels during recent and historical time. Here we present a record of total Hg (HgT) in an ice core from the pristine summit plateau (5340 m asl) of Mount Logan, Yukon, Canada, representing atmospheric deposition from AD 1410 to 1998. The Colonial Period (~1603-1850) and North American "Gold Rush" (1850-1900) represent minor fractions (8% and 14%, respectively) of total anthropogenic Hg deposition in the record, with the majority (78%) occurring during the 20th Century. A period of maximum HgT fluxes from 1940 to 1975 coincides with estimates of enhanced anthropogenic Hg emissions from commercial sources, as well as with industrial emissions of other toxic metals. Rapid declines in HgT fluxes following peaks during the Gold Rush and the mid-20th Century indicate that atmospheric Hg deposition responds quickly to reductions in emissions. Increasing HgT fluxes from 1993 until the youngest samples in 1998 may reflect the resurgence of Hg emissions from unregulated coal burning and small-scale gold mining.
description: Total mercury concentrations and fluxes for discrete sections of the PRCol ice core from Mount Logan between AD 1410 and 1998
DOI: 10.5517/cc68bd5
title: CCDC 186756: Experimental Crystal Structure Determination

description: Related Article: Y.Shimazaki, S.Huth, S.Karasawa, S.Hirota, Y.Naruta, O.Yamauchi|2004|Inorg.Chem.|43|7816|doi:10.1021/ic049040k
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/cc8pnm6
title: CCDC 259148: Experimental Crystal Structure Determination

description: Related Article: I.L.Fedushkin, N.M.Khvoinova, A.Yu.Baurin, G.K.Fukin, V.K.Cherkasov, M.P.Bubnov|2004|Inorg.Chem.|43|7807|doi:10.1021/ic048801g
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/rt7q-nh82
title: NOAA/WDS Paleoclimatology - Antarctic Intermediate Water properties since 400 ka recorded in benthic foraminifera

description: Reconstruction of intermediate water properties is important for understanding feedbacks within the ocean-climate system, particularly since these water masses are capable of driving high–low latitude teleconnections. Nevertheless, information about intermediate water mass evolution through the late Pleistocene remains limited. This paper examines changes in Antarctic Intermediate Water (AAIW), the most extensive intermediate water mass in the modern ocean through the last 400 kyr using the stable isotopic composition (δ18O and δ13C) and trace element concentration (Mg/Ca and B/Ca) of two benthic foraminiferal species from the same samples: epifaunal Planulina wuellerstorfi and infaunal Uvigerina peregrina. Our results confirm that the most reasonable estimates of AAIW temperature and Δ[CO2−3] are generated by Mg/CaU. peregrina and B/CaP. wuellerstorfi, respectively. We present a 400 kyr record of intermediate water temperature and Δ[CO2−3] from a sediment core from the Southwest Pacific (DSDP site 593; 40°30′S, 167°41′E, 1068 m water depth), which lies within the core of modern AAIW. Our results suggest that a combination of geochemical analyses on both infaunal and epifaunal benthic foraminiferal species yields important information about this critical water mass through the late Pleistocene. When combined with two nearby records of water properties from deeper depths, our data demonstrate that during interglacial stages of the late Pleistocene, AAIW and Circumpolar Deep Water (CPDW) have more similar water mass properties (temperature and δ13C), while glacial stages are typified by dissimilar properties between AAIW and CPDW in the Southwest Pacific. Our new Δ[CO2−3] record shows short time-scale variations, but a lack of coherent glacial–interglacial variability indicating that large quantities of carbon were not stored in intermediate waters during recent glacial periods.
description: Provided Keywords: Antarctic Intermediate Water, Deep Sea Drilling Program site 593, benthic foraminifera, stable isotopes, Mg/Ca, B/Ca
DOI: 10.5517/cc8pnn7
title: CCDC 259149: Experimental Crystal Structure Determination

description: Related Article: Y.Shimazaki, S.Huth, S.Karasawa, S.Hirota, Y.Naruta, O.Yamauchi|2004|Inorg.Chem.|43|7816|doi:10.1021/ic049040k
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/rb9m-ph74
title: NOAA/WDS Paleoclimatology - Genesis v.3 Late Cretaceous Climate Simulations

description: The percentage of oxygen in Earth's atmosphere varied between 10% and 35% throughout the Phanerozoic. These changes have been linked to the evolution, radiation, and size of animals but have not been considered to affect climate. We conducted simulations showing that modulation of the partial pressure of oxygen (pO2), as a result of its contribution to atmospheric mass and density, influences the optical depth of the atmosphere. Under low pO2 and a reduced-density atmosphere, shortwave scattering by air molecules and clouds is less frequent, leading to a substantial increase in surface shortwave forcing. Through feedbacks involving latent heat fluxes to the atmosphere and marine stratus clouds, surface shortwave forcing drives increases in atmospheric water vapor and global precipitation, enhances greenhouse forcing, and raises global surface temperature. Our results implicate pO2 as an important factor in climate forcing throughout geologic time.
description: Climate Simulations using the Genesis v.3 model for Cenomanian (Late Cretaceous, ~94-100 million years before present). 
Climate model output netCDF filenames and boundary conditions are as follows:

Simulation	Age	CO2	O2	CH4	N2O	Luminosity	Obliquity	Eccentricity	Years
2CO2_10O.041-060.nc	Cenomanian	1120	10	741	325	1354	23.5	0	41-60
2CO2_21O.041-060.nc	Cenomanian	1120	21	650	285	1354	23.5	0	41-60
2CO2_35O.041-060.nc	Cenomanian	1120	35	535	234	1354	23.5	0	41-60
2CO2_10O.041-060LSX.nc	Cenomanian	1120	10	741	325	1354	23.5	0	41-60
2CO2_21O.041-060LSX.nc	Cenomanian	1120	21	650	285	1354	23.5	0	41-60
2CO2_35O.041-060LSX.nc	Cenomanian	1120	35	535	234	1354	23.5	0	41-60

Note: Each netcdf file contains 20-yr means of monthly average atmospheric or land surface (LSX) parameters.
DOI: 10.5517/cc8pnp8
title: CCDC 259150: Experimental Crystal Structure Determination

description: Related Article: Y.Shimazaki, S.Huth, S.Karasawa, S.Hirota, Y.Naruta, O.Yamauchi|2004|Inorg.Chem.|43|7816|doi:10.1021/ic049040k
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/r8ry-v538
title: NOAA/WDS Paleoclimatology - Mann et al 1999 N.Hemisphere Temperature Reconstruction, Past Millennium

description: Building on recent studies, we attempt hemispheric temperature reconstructions with proxy data networks for the past millennium. We focus not just on the reconstructions, but the uncertainties therein, and important caveats. Though expanded uncertainties prevent decisive conclusions for the period prior to AD 1400, our results suggest that the latter 20th century is anomalous in the context of at least the past millennium. The 1990s was the warmest decade, and 1998 the warmest year, at moderately high levels of confidence. The 20th century warming counters a millennial-scale cooling trend which is consistent with long-term astronomical forcing.
DOI: 10.5517/cc8pnq9
title: CCDC 259151: Experimental Crystal Structure Determination

description: Related Article: A.Cuevas, R.Chiozzone, C.Kremer, L.Suescun, A.Mombru, D.Armentano, G.De Munno, F.Lloret, J.Cano, J.Faus|2004|Inorg.Chem.|43|7823|doi:10.1021/ic0493853
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/rnr8-q663
title: NOAA/WDS Paleoclimatology - Northeastern United States Historical Descriptions of Past Indigenous Burning since 1500 CE

description: Background: The extent of past Indigenous cultural burning in the eastern US remains contested. Historical documents (e.g., early histories, journals, letters, and reports) contain descriptions of burning. Scholars have summarized descriptions, but few have compiled them into databases. Aims: This paper presents efforts to compile descriptions of past Indigenous burning in the eastern US and early results from mapped descriptions. Methods: Utilizing previously-cited descriptions and those discovered from digitized historical texts, the current dataset mapped >250 descriptions of burning in the northeastern US. Most were historical summaries from 19th-century authors, and fewer were firsthand observations from the 17th–19th centuries. Descriptions are shared as a GIS data layer, a tabular file, and an interactive web map. Key results: Descriptions correspond with fire-adapted vegetation, and clusters of descriptions suggest burning over large extents (e.g., southern New England, western New York). Estimated dates of burning or initial Euro-American settlement show an east-west succession in Indigenous fire exclusion and replacement with Euro-American burning. Conclusions: Historical descriptions suggest regional-extent influence upon past forested ecosystems, but the veracity of descriptions should be carefully evaluated. Implications: This project provides a dataset for further study of Indigenous burning and comparison with other methodologies for historical cultural fire reconstruction.
description: Provided Keywords: cultural burning, eastern US, fire, history, Indigenous
DOI: 10.5517/cc8pnrb
title: CCDC 259152: Experimental Crystal Structure Determination

description: Related Article: A.Cuevas, R.Chiozzone, C.Kremer, L.Suescun, A.Mombru, D.Armentano, G.De Munno, F.Lloret, J.Cano, J.Faus|2004|Inorg.Chem.|43|7823|doi:10.1021/ic0493853
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/r915-9d70
title: NOAA/WDS Paleoclimatology - Porter - Porcupine River Downstream site DP27 - PCGL - ITRDB CANA535

description: We present a new 23-site network of white spruce ring-width chronologies near boreal treeline in Old Crow Flats, Yukon Territory, Canada. Most chronologies span the last 300 years and some reach the mid-16th century. The chronologies exhibit coherent growth patterns before the 1930s. However, since the 1930s, they diverge in trend and exhibit one of two contrasting, but well-replicated patterns we call Group 1 and Group 2. Over the instrumental period (1930-2007) Group 1 sites were inversely correlated with previous-year July temperatures while Group 2 sites were positively correlated with growth-year June temperatures. At the broader northwestern North America (NWNA) scale, we find that the Group 1 and Group 2 patterns are common to a number of white spruce chronologies, which we call NWNA 1 and NWNA 2 chronologies. The NWNA 1 and NWNA 2 chronologies also share a single coherent growth pattern prior to their divergence (ca. 1950s). Comparison of the NWNA 1/NWNA 2 chronologies against gridded 20th-century temperatures for NWNA and reconstructed northern hemisphere summer temperatures (ad 1300-2000) indicates that all sites responded positively to temperature prior to the mid-20th century (at least back to ad 1300), but that some changed to a negative response (NWNA 1) while others maintained a positive response (NWNA 2). The spatial extent of divergence implies a large-scale forcing. As the divergence appears to be restricted to the 20th century, we suggest that the temperature response shift represents a moisture stress caused by an anomalously warm, dry 20th-century climate in NWNA, as indicated by paleoclimatic records. However, because some sites do not diverge and are located within a few kilometres of divergent sites, we speculate that site-level factors have been important in determining the susceptibility of sites to the large-scale drivers of divergence.
description: NOAA Template Raw Measurements file added 2019-01-27. NOAA Template Raw Measurements file added 2019-02-04.