cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.25921/pb34-9b07
title: NOAA/WDS Paleoclimatology - Southwest Pacific, New Zealand SST Reconstruction, Mg/Ca and Alkenone Data during the last 27 ka

description: Dual proxies were used to estimate paleo sea surface temperatures (SST) for the Bay of Plenty, north of New Zealand. Uk'37 and Mg/Ca in the planktonic foraminifera Globogerina bulloides reconstruct SST for the growth seasons for the organisms they are based upon. Uk'37 SST (summer) were consistently ~ 3.5 °C warmer than Mg/Ca (spring), suggesting that Bay of Plenty SST during the last glacial maximum (LGM) was 17.3 °C in summer and 13.8 °C in spring. Combining these results with published data based on the same proxies from other sites around New Zealand shows cooling of 3–4 °C in both seasons at all sites in the LGM relative to the Holocene. This indicates that overall, glacial surface water cooling was similar in subtropical and subpolar waters in both spring and summer. This contrasts with published foraminiferal assemblage reconstructions suggesting greater subantarctic cooling during the LGM. Deglacial warming across the region was characterized by changes in both seasonal and latitudinal temperature differences. Warming began in subtropical waters at ~21 ka, ~ 1.5 ka earlier than in subantarctic water. In the Bay of Plenty, the seasons maintained a consistent offset, while in Hawke Bay, springs stayed cold while summers warmed until after the Antarctic Cold Reversal. In contrast, subantarctic spring SST warmed rapidly, causing temperature differences to decrease between the Chatham Rise (subantarctic) and subtropical sites, possibly caused by shifting westerly winds. The use of multiple proxies enhances our understanding by adding a seasonal component to the glacial story of climate change in the southwest Pacific Ocean.
DOI: 10.5517/cc832cs
title: CCDC 241284: Experimental Crystal Structure Determination

description: Related Article: A.S.Ionkin, W.J.Marshall|2004|Organometallics|23|6031|doi:10.1021/om049444k
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/p0sg-ad26
title: NOAA/WDS Paleoclimatology - Therrell - Sielbeck Forest - QULY - ITRDB IL023

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: Sielback Land and Water Reserve, December 15th, 2014, Q. lyrata NOAA Template Raw Measurements file added 2020-03-09.
DOI: 10.5517/cc832dt
title: CCDC 241285: Experimental Crystal Structure Determination

description: Related Article: A.S.Ionkin, W.J.Marshall|2004|Organometallics|23|6031|doi:10.1021/om049444k
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/cc832fv
title: CCDC 241286: Experimental Crystal Structure Determination

description: Related Article: A.S.Ionkin, W.J.Marshall|2004|Organometallics|23|6031|doi:10.1021/om049444k
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/cc832gw
title: CCDC 241287: Experimental Crystal Structure Determination

description: Related Article: A.S.Ionkin, W.J.Marshall|2004|Organometallics|23|6031|doi:10.1021/om049444k
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/pbbw-eh30
title: NOAA/WDS Paleoclimatology - de Graauw - Stump Cabin - QUAL - ITRDB WV028

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: Chronology derived from log building (Stump Cabin; SCQ). NOAA Template Raw Measurements file added 2020-03-09.
DOI: 10.5517/cc832hx
title: CCDC 241288: Experimental Crystal Structure Determination

description: Related Article: A.S.Ionkin, W.J.Marshall|2004|Organometallics|23|6031|doi:10.1021/om049444k
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/pj4b-yb83
title: NOAA/WDS Paleoclimatology - Marquardt - Mt. Bigelow 5-needle - PIAZ - ITRDB AZ600

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): 5-needle Pinus arizonica. NOAA Template Raw Measurements file added 2020-03-09.
DOI: 10.5517/cc832jy
title: CCDC 241289: Experimental Crystal Structure Determination

description: Related Article: A.S.Ionkin, W.J.Marshall|2004|Organometallics|23|6031|doi:10.1021/om049444k
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/cc832kz
title: CCDC 241290: Experimental Crystal Structure Determination

description: Related Article: A.S.Ionkin, W.J.Marshall|2004|Organometallics|23|6031|doi:10.1021/om049444k
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/pthx-hk16
title: NOAA/WDS Paleoclimatology - Wilson - Tagish - PCGL - ITRDB CANA606

description: In north-western North America, the so-called divergence problem (DP) is expressed in tree ring width (RW) as an unstable temperature signal in recent decades. Maximum latewood density (MXD), from the same region, shows minimal evidence of DP. While MXD is a superior proxy for summer temperatures, there are very few long MXD records from North America. Latewood blue intensity (LWB) measures similar wood properties as MXD, expresses a similar climate response, is much cheaper to generate and thereby could provide the means to profoundly expand the extant network of temperature sensitive tree-ring (TR) chronologies in North America. In this study, LWB is measured from 17 white spruce sites (Picea glauca) in south-western Yukon to test whether LWB is immune to the temporal calibration instabilities observed in RW. A number of detrending methodologies are examined. The strongest calibration results for both RW and LWB are consistently returned using age-dependent spline (ADS) detrending within the signal-free (SF) framework. RW data calibrate best with June-July maximum temperatures (Tmax), explaining up to 28% variance, but all models fail validation and residual analysis. In comparison, LWB calibrates strongly (explaining 43-51% of May-August Tmax) and validates well. The reconstruction extends to 1337 CE, but uncertainties increase substantially before the early 17th century because of low replication. RW-, MXD- and LWB-based summer temperature reconstructions from the Gulf of Alaska, the Wrangell Mountains and Northern Alaska display good agreement at multi-decadal and higher frequencies, but the Yukon LWB reconstruction appears potentially limited in its expression of centennial-scale variation. While LWB improves dendroclimatic calibration, future work must focus on suitably preserved sub-fossil material to increase replication prior to 1650 CE.
description: NOAA Template Raw Measurements file added 2020-03-09.
DOI: 10.5517/cc832l0
title: CCDC 241291: Experimental Crystal Structure Determination

description: Related Article: A.S.Ionkin, W.J.Marshall|2004|Organometallics|23|6031|doi:10.1021/om049444k
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/pepq-3m02
title: NOAA/WDS Paleoclimatology - Pederson - Scenic Point - PIFL - ITRDB MT174

description: Tree ring data from the International Tree Ring Data Bank and World Data Center for Paleoclimatology archives.  Most data sets include raw treering measurements (most are annual ring width, with some collections of earlywood or latewood width or wood density), plus chronologies (standardized growth indices for a site compiled from multiple treering samples). Reconstructions of climate variables are included with some of these data sets.  Each data type is stored in a separate data file; the data type is coded into the file name. For details please see: http://www.ncdc.noaa.gov/paleo/treeinfo.htmll
description: NOAA Template Raw Measurements file added 2020-01-15.
DOI: 10.5517/cc832m1
title: CCDC 241292: Experimental Crystal Structure Determination

description: Related Article: A.S.Ionkin, W.J.Marshall|2004|Organometallics|23|6031|doi:10.1021/om049444k
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/cc832n2
title: CCDC 241293: Experimental Crystal Structure Determination

description: Related Article: A.S.Ionkin, W.J.Marshall|2004|Organometallics|23|6031|doi:10.1021/om049444k
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/phr4-1961
title: NOAA/WDS Paleoclimatology - North American Seasonal Precipitation Atlas (NASPA)

description: Cool- and warm-season precipitation totals have been reconstructed on a gridded basis for North America using 439 tree-ring chronologies correlated with December-April totals and 547 different chronologies correlated with May-July totals. These discrete seasonal chronologies are not significantly correlated with the alternate season; the December-April reconstructions are skillful over most of the southern and western United States and north-central Mexico, and the May-July estimates have skill over most of the United States, southwestern Canada, and northeastern Mexico. Both the strong continent-wide El Nino-Southern Oscillation (ENSO) signal embedded in the cool-season reconstructions and the Arctic Oscillation signal registered by the warm-season estimates faithfully reproduce the sign, intensity, and spatial patterns of these ocean-atmospheric influences on North American precipitation as recorded with instrumental data. The reconstructions are included in the North American Seasonal Precipitation Atlas (NASPA) and provide insight into decadal droughts and pluvials. They indicate that the sixteenth-century megadrought, the most severe and sustained North American drought of the past 500 years, was the combined result of three distinct seasonal droughts, each bearing unique spatial patterns potentially associated with seasonal forcing from ENSO, the Arctic Oscillation, and the Atlantic multidecadal oscillation. Significant 200-500-yr-long trends toward increased precipitation have been detected in the cool- and warm-season reconstructions for eastern North America. These seasonal precipitation changes appear to be part of the positive moisture trend measured in other paleoclimate proxies for the eastern area that began as a result of natural forcing before the industrial revolution and may have recently been enhanced by anthropogenic climate change.
description: North American Seasonal Precipitation Atlas (NASPA) is a 500- to 2000-year long gridded (0.5 x 0.5 degree) reconstruction of cool- and warm-season total precipitation and the standardized precipitation index over North America, based on 439 tree-ring chronologies in the cool season (Dec-Apr) and 547 tree-ring chronologies in the warm season (May-Jul). NASPA maps and time series plots are available at: http://drought.memphis.edu/NASPA/
DOI: 10.5517/cc832p3
title: CCDC 241294: Experimental Crystal Structure Determination

description: Related Article: A.S.Ionkin, W.J.Marshall|2004|Organometallics|23|6031|doi:10.1021/om049444k
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/cc832q4
title: CCDC 241295: Experimental Crystal Structure Determination

description: Related Article: A.S.Ionkin, W.J.Marshall|2004|Organometallics|23|6031|doi:10.1021/om049444k
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/p59m-z424
title: NOAA/WDS Paleoclimatology - Bulk sedimentary total organic carbon, total nitrogen and d15N in the Santa Barbara Basin for the last 2,000 Years

description: Sedimentary d15N (d15Nsed) has been widely applied as a proxy for water column denitrification. When combined with additional productivity proxies, it provides insights into the driving forces behind long-term changes in water column oxygenation. High-resolution (~2 years) d15Nsed and productivity proxy records (total organic carbon [TOC], Si/Ti, and Ca/Ti) from Santa Barbara Basin, California, were generated from a well-dated Kasten core (SPR0901-03KC). These records reveal the relationship between Southern California upwelling and oxygenation over the past 2,000 years. Inconsistencies between Si/Ti (coastal upwelling proxy) and TOC (total export productivity proxy) suggest wind curl upwelling influenced Southern California primary productivity, especially during intervals of weak coastal upwelling. Coherence between d15Nsed, TOC, and drought indicators supports a local control of d15Nsed by atmospheric circulation, as persistent northerly winds associated with an intensified North Pacific High pressure cell lead to enhanced coastal upwelling. In the northeast Pacific, d15Nsed is used as a water mass tracer of denitrification signals transported north from the eastern tropical North Pacific (ETNP) via the California Undercurrent. A 1,200-year d15Nsed record from the Pescadero slope, Gulf of California, lies between denitrifying subsurface waters in the ETNP and Southern California. During the Medieval Climate Anomaly, coherence between Pescadero and Santa Barbara Basin d15Nsed indicates connections between ETNP and Southern California on centennial timescales. Yet an out-of-phase relationship occurred when the Aleutian Low was anomalously strong during the Little Ice Age. We suggest intensified nutrient-rich subarctic water advection might have transported high-15N nitrate into Southern California when the California Undercurrent and ETNP denitrification weakened.
description: Total organic carbon (TOC) and total nitrogen (TN) were measured on acidified samples on the elemental analyzer.  The bulk sedimentary d15N was measured on unacidified samples with isotope ratio mass spectrometer (IRMS). 
      Provided Keywords: nitrogen isotopes, total organic carbon, Santa Barbara Basin
DOI: 10.5517/cc832r5
title: CCDC 241296: Experimental Crystal Structure Determination

description: Related Article: A.S.Ionkin, W.J.Marshall|2004|Organometallics|23|6031|doi:10.1021/om049444k
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/cc832s6
title: CCDC 241297: Experimental Crystal Structure Determination

description: Related Article: A.S.Ionkin, W.J.Marshall|2004|Organometallics|23|6031|doi:10.1021/om049444k
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/pm8x-5944
title: NOAA/WDS Paleoclimatology - Gutiérrez - Col du Zad - CDAT - ITRDB MORC025

description: Aim

The aim was to decipher Europe‐wide spatio-temporal patterns of forest growth dynamics and their associations with carbon isotope fractionation processes inferred from tree rings as modulated by climate warming.
Location

Europe and North Africa (30-70 N, 10 W-35 E).
Time period

1901-2003.
Major taxa studied

Temperate and Euro-Siberian trees.
Methods

We characterize changes in the relationship between tree growth and carbon isotope fractionation over the 20th century using a European network consisting of 20 site chronologies. Using indexed tree-ring widths (TRWi), we assess shifts in the temporal coherence of radial growth across sites (synchrony) for five forest ecosystems (Atlantic, boreal, cold continental, Mediterranean and temperate). We also examine whether TRWi shows variable coupling with leaf-level gas exchange, inferred from indexed carbon isotope discrimination of tree-ring cellulose (Delta13Ci).

Results

We find spatial autocorrelation for TRWi and Delta13Ci extending over a maximum of 1,000 km among forest stands. However, growth synchrony is not uniform across Europe, but increases along a latitudinal gradient concurrent with decreasing temperature and evapotranspiration. Latitudinal relationships between TRWi and Delta13Ci (changing from negative to positive southwards) point to drought impairing carbon uptake via stomatal regulation for water saving occurring at forests below 60 N in continental Europe. An increase in forest growth synchrony over the 20th century together with increasingly positive relationships between TRWi and Delta13Ci indicate intensifying impacts of drought on tree performance. These effects are noticeable in drought-prone biomes (Mediterranean, temperate and cold continental).
Main conclusions

At the turn of this century, convergence in growth synchrony across European forest ecosystems is coupled with coordinated warming-induced effects of drought on leaf physiology and tree growth spreading northwards. Such a tendency towards exacerbated moisture-sensitive growth and physiology could override positive effects of enhanced leaf intercellular CO2 concentrations, possibly resulting in Europe‐wide declines of forest carbon gain in the coming decades.
description: NOAA Template Raw Measurements file added 2020-01-15.