cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.25921/wm7m-2w66
title: NOAA/WDS Paleoclimatology - Clemens et al. 2008 Plio-Pleistocene East Asian Monsoon Proxy Data

description: The Milankovitch paradigm links the timing (phase) of ice volume minima to summer insolation maxima in the hemisphere where ice volume dominates; consistent application of this paradigm dictates that Pliocene ice volume minima should lag Southern Hemisphere summer insolation maxima. We infer the magnitude of this lag on the basis of the phase relationship between equatorial sea surface temperature and benthic δ18O. We infer that Pliocene δ18O minima should lag obliquity maxima by 19° (2.2 ka), broadly consistent with the current global marine δ18O chronology, and precession maxima by 32° (2 ka), a difference of 160° (10.2 ka) relative to the current global marine δ18O chronology. Only in the context of this revision are Pliocene summer and winter monsoon phase relationships consistent with direct orbital forcing across the entire Indo-Asian region, including marine and terrestrial proxies from the Chinese Loess Plateau, the South China Sea, and the Arabian Sea. Strong Pliocene summer and winter monsoons were in phase with one another, strengthened at obliquity minima and precession minima; the summer monsoon was also strengthened at precession maxima, yielding a semiprecession spectral signal. Strong Pliocene monsoons at orbital extremes indicate a direct response to fast physics processes including sensible heating and cooling of the Asian landmass and, for the summer monsoon, the export of latent heat from the southern Indian Ocean. As Northern Hemisphere ice volume grew into the Pleistocene, the timing of strong winter and summer monsoons drifted apart becoming influenced by the combined effects of fast physics and slow physics (ice volume) variables. The phase of strong winter monsoons shifted toward ice maxima, and the phase of strong summer monsoons shifted toward ice minima.
DOI: 10.25921/wnt9-gb11
title: NOAA/WDS Paleoclimatology - Cai et al. 2006 XiaoBailong Cave, China Stalagmite d18O Data

description: The oxygen isotopic record of stalagmite XBL-1 from southwestern China reveals millennial-scale variability of the Indian Monsoon between 53 and 36 ka, synchronous with changes in the East Asian Monsoon recorded at Hulu Cave and similar to Dansgaard-Oeschger cycles recorded in Greenland ice. Our record, in general, confirms the chronology of Hulu Cave. If our correlations between Greenland and the Xiaobailong Cave record are correct, both the Greenland Ice Sheet Project 2 and Greenland Ice Core Project (ss09sea) chronologies are accurate within quoted errors.  A dry interval that we correlate with Heinrich Event 5 (H5) and the Greenland stadial preceding Greenland Interstadial 12 (GIS 12) is centered ca. 48.0 ka and a shift to drier conditions, correlated to the end of GIS 12, is ca. 43.5 ka. Overall, the variability of the Indian Monsoon, from XBL-1 data, on millennial scales is similar to and correlated with high-latitude ice core records from the Northern Hemisphere. However, some Indian Monsoon characteristics more closely resemble, but are anticorrelated with, features in the Antarctic record, suggesting some link to climate of the high southern latitudes, in addition to the clear link to the climate of the high northern latitudes.
DOI: 10.25921/w91v-gc32
title: NOAA/WDS Paleoclimatology - Sosdian and Rosenthal 2009 N. Atlantic Pliocene BWT Recons

description: Earth has undergone profound changes since the late Pliocene, which led to the development [~2.7 million years ago (Ma)] and intensification (~0.9 Ma) of large-scale Northern Hemisphere ice sheets, recorded as transitions in the benthic foraminiferal oxygen isotope (δ18Ob) record. Here we present an orbitally resolved record of deep ocean temperature derived from benthic foraminiferal magnesium/calcium ratios from the North Atlantic, which shows that temperature variations are a substantial portion of the global δ18Ob signal. The record shows two distinct cooling events associated with the late Pliocene (LPT, 2.5 to 3 Ma) and mid-Pleistocene (MPT, 1.2 to 0.85 Ma) climate transitions. Whereas the LPT increase in ice volume is attributed directly to global cooling, the shift to 100,000-year cycles at the MPT is more likely to be a response to an additional change in ice-sheet dynamics.
DOI: 10.25921/waqz-8291
title: NOAA/WDS Paleoclimatology - Pichevin et al. 2009 Eastern Equatorial Pacific 35KYr Paleonutrient Data

description: The modern Eastern Equatorial Pacific (EEP) Ocean is a large oceanic source of carbon to the atmosphere. Primary productivity over large areas of the EEP is limited by silicic acid and iron availability, and because of this constraint the organic carbon export to the deep ocean is unable to compensate for the outgassing of carbon dioxide that occurs through upwelling of deep waters. It has been suggested that the delivery of dust-borne iron to the glacial ocean could have increased primary productivity and enhanced deep-sea carbon export in this region, lowering atmospheric carbon dioxide concentrations during glacial periods. Such a role for the EEP is supported by higher organic carbon burial rates documented in underlying glacial sediments, but lower opal accumulation rates cast doubts on the importance of the EEP as an oceanic region for significant glacial carbon dioxide drawdown. Here we present a new silicon isotope record that suggests the paradoxical decline in opal accumulation rate in the glacial EEP results from a decrease in the silicon to carbon uptake ratio of diatoms under conditions of increased iron availability from enhanced dust input. Consequently, our study supports the idea of an invigorated biological pump in this region during the last glacial period that could have contributed to glacial carbon dioxide drawdown. Additionally, using evidence from silicon and nitrogen isotope changes, we infer that, in contrast to the modern situation, the biological productivity in this region is not constrained by the availability of iron, silicon and nitrogen during the glacial period. We hypothesize that an invigorated biological carbon dioxide pump constrained perhaps only by phosphorus limitation was a more common occurrence in low-latitude areas of the glacial ocean.
DOI: 10.25921/wsvh-hk32
title: NOAA/WDS Paleoclimatology - Nakagawa et al. 2006 Lake Suigetsu Pollen Data and Climate Reconstructions

description: The deglacial meltwater pulse in the North Atlantic that induced the Younger Dryas event also prompted climate cooling in East Asian monsoon regions such as Japan and coastal mid-latitude China. However, very little is understood about the mechanism that can transmit changes in the North Atlantic to the Far East. Here we show that the shutdown of the North Atlantic thermohaline circulation brought about significantly lower temperatures and higher precipitation in the Japanese winter, whereas the change in the Japanese summer climate was considerably smaller. The cooling of the Siberian air mass seems to have caused an increased pressure gradient between Siberia and the West Pacific in winter, intensifying the winter monsoon. The Mongolian high-pressure system and the westerly jet stream played an important role in the teleconnection. In contrast, the warming at the onset of the late glacial interstadial (GI-1; Bølling-Allerød) in the West Pacific did not have season-specific features, implying that the principal driving mechanism of this warming event may lie in a pan-hemispheric or global factor, such as insolation changes.
DOI: 10.25921/wzd6-2r47
title: NOAA/WDS Paleoclimatology - Cheng et al. 2009 Sanbao and Linzhu Caves Glacial Terminations d18O Data

description: 230Th-dated oxygen isotope records of stalagmites from Sanbao Cave, China, characterize Asian Monsoon (AM) precipitation through the ends of the third- and fourthmost recent ice ages. As a result, AM records for the past four glacial terminations can now be precisely correlated with those from ice cores and marine sediments, establishing the timing and sequence of major events. In all four cases, observations are consistent with a classic Northern Hemisphere summer insolation intensity trigger for an initial retreat of northern ice sheets. Meltwater and icebergs entering the North Atlantic alter oceanic and atmospheric circulation and associated fluxes of heat and carbon, causing increases in atmospheric CO2 and Antarctic temperatures that drive the termination in the Southern Hemisphere. Increasing CO2 and summer insolation drive recession of northern ice sheets, with probable positive feedbacks between sea level and CO2.
DOI: 10.25921/wryw-cc95
title: NOAA/WDS Paleoclimatology - Vitas - Zagare - LADE - ITRDB LITH015

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 2018-12-19. NOAA Template Raw Measurements file added 2019-02-05.
DOI: 10.25921/wmh0-jd27
title: NOAA/WDS Paleoclimatology - Wiles - Rock Tor - TSME - ITRDB AK091

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: 10.25921/wkh1-5m43
title: NOAA/WDS Paleoclimatology - Voelker - MOFEP Site 4 - QUVE - ITRDB MO064

description: Despite experimental evidence showing that elevated CO2 levels increase growth in most plants, the isolation of a signal consistent with anthropogenically caused increases in atmospheric CO2 from the dendrochronological record has shown mixed results. Our extensive sets of tree ring data from the Ozark Mountains in Missouri showed that since 1850, Quercus velutina Lam., Quercus coccinea Muench., and Pinus echinata Mill. trees increased in stem growth coincidently with increases in atmospheric CO2. Those long-term increases in radial growth appear unrelated to historical disturbance levels for the region, to long-term changes in relevant climatic variables, or to productivity of sites sampled for the purpose of creating a time sequence of tree ring growth. It is still unclear what the potential role of nitrogen deposition might have been for tree growth. We cross-dated a large number of increment cores and aligned the ring width data by pith date for accurate age constant assessments of growth over the past 150 years. Thus, we circumvented changes in growth trend associated with differences in physiological functioning during development, as well as the need for statistical detrending that removes an unknown degree of long-term environmental signal, the so called segment length curse that applies to standard dendrochronological investigations. When the positive relationship between CO2 and ring width was examined at different ages, an ontogenetic decline in the rate of growth stimulation was found. Specifically, both the pooled Quercus spp. and P. echinata were characterized by a negative exponential pattern of response over a developmental sequence through age 50. Further knowledge of an intrinsic decline in CO2 sensitivity with tree age or size such as this may be important for increased accuracy in estimating terrestrial carbon stocks across successional landscapes.
description: Cores Stored at:
# Oregon State University
# 
# Data were collected on tagged trees from MOFEP plots that were 
# dominated by black oak, scarlet oak and shortleaf pine. The trees were 
# dominant or co-dominant. Each series ID represents the site (first 
# digit) plot (second two digits) and tree (last three digits). NOAA Template Raw Measurements file added 2019-02-08.

# Publication DOI: 10.1890/0012-9615(2006)076[0549:HCGEDW]2.0.CO;2
DOI: 10.25921/wdge-p784
title: NOAA/WDS Paleoclimatology - Mirror Lake, New Hampshire 170 Year Tree Ring Nitrogen Isotope Data

description: Nitrogen (N) availability, defined here as the supply of N to terrestrial plants and soil microorganisms relative to their N demands, limits the productivity of many temperate zone forests and in part determines ecosystem carbon (C) content. Despite multidecadal monitoring of N in streams, the long-term record of N availability in forests of the northeastern United States is largely unknown. Therefore, although these forests have been receiving anthropogenic N deposition for the past few decades, it is still uncertain whether terrestrial N availability has changed during this time and, subsequently, whether forest ecosystems have responded to increased N deposition. Here, we used stable N isotopes in tree rings and lake sediments to demonstrate that N availability in a northeastern forest has declined over the past 75 years, likely because of ecosystem recovery from Euro-American land use. Forest N availability has only recently returned to levels forecast from presettlement trajectories, rendering the trajectory of future forest N cycling uncertain. Our results suggest that chronic disturbances caused by humans, especially logging and agriculture, are major drivers of terrestrial N cycling in forest ecosystems today, even a century after cessation.
description: Nitrogen isotopic data (d15N) for 5 tree species for the past 150 years, from cores collected near Mirror Lake, New Hampshire.  Data from cores of Tsuga canadensis, Acer saccharum, Betula papyrifera, Fagus grandifolia, and Fraxinus americana are included. 5.15-mm diameter increment bores were acquired from 22 trees divided among the three subwatersheds of Mirror Lake.  Each bore was cut into 30-mg sections with sections divided along boundaries between ring widths. On average, a section contained wood deposited during 2.75 years. The 15N:14N ratio of each section was determined at the University of California, Davis, on a PDZ Europa 20-20 isotope ratio mass spectrometer.  
IITRDB008
DOI: 10.5517/cc9cvj0
title: CCDC 279512: Experimental Crystal Structure Determination

description: Related Article: T.Olszewska, A.Pyszno, M.J.Milewska, M.Gdaniec, T.Polonski|2005|Tetrahedron:Asymm.|16|3711|doi:10.1016/j.tetasy.2005.09.017
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/cc9s2bg
title: CCDC 291255: 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/wnnj-hh12
title: NOAA/WDS Paleoclimatology - Houtman Abrolhos Island Sr/Ca, Oxygen Isotopes, SST and Sea-Level Reconstruction Data from 1795-2010

description: Variability of the Leeuwin current (LC) off Western Australia is a footprint of interannual and decadal climate variations in the tropical Indo-Pacific. La Niña events often result in a strengthened LC, high coastal sea levels and unusually warm sea surface temperatures (SSTs), termed Ningaloo Niño. The rarity of such extreme events and the response of the southeastern Indian Ocean to regional and remote climate forcing are poorly understood owing to the lack of long-term records. Here we use well-replicated coral SST records from within the path of the LC, together with a reconstruction of the El Niño-Southern Oscillation to hindcast historical SST and LC strength from 1795 to 2010. We show that interannual and decadal variations in SST and LC strength characterized the past 215 years and that the most extreme sea level and SST anomalies occurred post 1980. These recent events were unprecedented in severity and are likely aided by accelerated global ocean warming and sea-level rise.
description: The dataset contains mean annual Sr/Ca and oxygen isotope data, SST reconstructions and sea-level reconstructions relative to the 1900-1993 mean. Keywords provided: Southeastern Indian Ocean, Sr/Ca, stable isotopes, SST, sea-level height
DOI: 10.5517/cc96lgj
title: CCDC 274457: Experimental Crystal Structure Determination

description: Related Article: Feihe Huang, A.L.Rheingold, C.Slebodnick, A.Ohs, K.A.Switek, H.W.Gibson|2005|Tetrahedron|61|10242|doi:10.1016/j.tet.2005.08.036
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/w754-7r85
title: NOAA/WDS Paleoclimatology - Shiyatov - Kursala Ridge - JUTU - ITRDB KYRG009

description: Past global climate changes had strong regional expression. To elucidate their spatio-temporal pattern, we reconstructed past temperatures for seven continental-scale regions during the past one to two millennia. The most coherent feature in nearly all of the regional temperature reconstructions is a long-term cooling trend, which ended late in the nineteenth century. At multi-decadal to centennial scales, temperature variability shows distinctly different regional patterns, with more similarity within each hemisphere than between them. There were no globally synchronous multi-decadal warm or cold intervals that define a worldwide Medieval Warm Period or Little Ice Age, but all reconstructions show generally cold conditions between ad 1580 and 1880, punctuated in some regions by warm decades during the eighteenth century. The transition to these colder conditions occurred earlier in the Arctic, Europe and Asia than in North America or the Southern Hemisphere regions. Recent warming reversed the long-term cooling; during the period ad 1971-2000, the area-weighted average reconstructed temperature was higher than any other time in nearly 1,400 years.
description: Purpose of Collection: 
# Climatology - temperature analyses NOAA Template Raw Measurements file added 2019-04-08. 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/cc96lhk
title: CCDC 274458: Experimental Crystal Structure Determination

description: Related Article: Feihe Huang, A.L.Rheingold, C.Slebodnick, A.Ohs, K.A.Switek, H.W.Gibson|2005|Tetrahedron|61|10242|doi:10.1016/j.tet.2005.08.036
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/cc96ljl
title: CCDC 274459: Experimental Crystal Structure Determination

description: Related Article: Feihe Huang, A.L.Rheingold, C.Slebodnick, A.Ohs, K.A.Switek, H.W.Gibson|2005|Tetrahedron|61|10242|doi:10.1016/j.tet.2005.08.036
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/cc96lkm
title: CCDC 274460: Experimental Crystal Structure Determination

description: Related Article: Feihe Huang, A.L.Rheingold, C.Slebodnick, A.Ohs, K.A.Switek, H.W.Gibson|2005|Tetrahedron|61|10242|doi:10.1016/j.tet.2005.08.036
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/wkme-wn59
title: NOAA/WDS Paleoclimatology - Cook - Babusar - JUEX - ITRDB PAKI019

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: Purpose of Collection: 
# Climatology - precipitation
# Missing data values are designated by -888 NOAA Template Raw Measurements file added 2019-04-08.
DOI: 10.5517/cc96lln
title: CCDC 274461: Experimental Crystal Structure Determination

description: Related Article: Feihe Huang, A.L.Rheingold, C.Slebodnick, A.Ohs, K.A.Switek, H.W.Gibson|2005|Tetrahedron|61|10242|doi:10.1016/j.tet.2005.08.036
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/cc96lmp
title: CCDC 274462: Experimental Crystal Structure Determination

description: Related Article: Feihe Huang, A.L.Rheingold, C.Slebodnick, A.Ohs, K.A.Switek, H.W.Gibson|2005|Tetrahedron|61|10242|doi:10.1016/j.tet.2005.08.036
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.