cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.25921/n5yy-8d64
title: NOAA/WDS Paleoclimatology - Vitas - Berzenai - LADE - ITRDB LITH022

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/nt1v-0d53
title: NOAA/WDS Paleoclimatology - Vitas - Bukta - LADE - ITRDB LITH021

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/nwfz-sf47
title: NOAA/WDS Paleoclimatology - Vitas - Degsne - LADE - ITRDB LITH020

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/nn06-kz61
title: NOAA/WDS Paleoclimatology - Weber River, Utah 576 Year Streamflow Reconstruction

description: We present a 576-year tree-ring-based reconstruction of streamflow for northern Utah's Weber River that exhibits considerable interannual and decadal-scale variability. While the 20th Century instrumental period includes several extreme individual dry years, it was the century with the fewest such years of the entire reconstruction. Extended droughts were more severe in duration, magnitude, and intensity prior to the instrumental record, including the most protracted drought of the record, which spanned 16 years from 1703 to 1718. Extreme wet years and periods are also a regular feature of the reconstruction. A strong early 17th Century pluvial exceeds the early 20th Century pluvial in magnitude, duration, and intensity, and dwarfs the 1980s wet period that caused significant flooding along the Wasatch Front. The long-term hydroclimatology of northern Utah is marked by considerable uncertainty; hence, our reconstruction provides water managers with a more complete record of water resource variability for assessment of the risk of droughts and floods for one of the largest and most rapidly growing population centers in the Intermountain West.
description: Weber River streamflow reconstructed for the past 576 years.  Reconstruction based on
pinyon pine and Douglas-fir tree ring chronologies from just east of the crest of the Wasatch Mountains 
(Tanner Ridge, TNR and Rattlesnake Mountain, RSM) and from the rain shadow of the Wasatch Range 
and south of the Uinta Mountains (Well's Draw Update, WED and Harmon Canyon, HAR).  All collections 
are now included in the International Tree-Ring Data Bank (UT528, UT530, UT533, UT534). Multiple linear 
regression was used to model and reconstruct streamflow from the tree-ring series, and principal components 
analysis to extract the major modes of variability from the chronologies.
DOI: 10.25921/n3xz-3m52
title: NOAA/WDS Paleoclimatology - New England Historical Climate OldWeather Database

description: Records of past climate and environment from historical references and documentary evidence such as church records, harvest dates, and diaries. 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.

description: Diary and instrumental historical weather records from New England states 
(Northeastern United States). Data table and abbreviation keys exported 
from the Microsoft Access databse file oldweather.mdb created by Zielinski et al. 
in a project funded by the US National Science Foundation.  Observed values 
are stored in the large (21MB) database export file new-england-oldweather-data.txt.
DOI: 10.25921/nq83-m649
title: NOAA/WDS Paleoclimatology - Voelker - Baskett Wildlife Area - QUMA - ITRDB MO076

description: Paleoclimate proxies based on the measurement of xylem cell anatomy have rarely been developed across the temperature range of a species or applied to wood predating the most recent millennium. Here we describe wood anatomy-based proxies for spring temperatures in central North America from modern bur oaks (Quercus macrocarpa Michx.). The strong coherence of temperature signals across the species range supports the use of these proxies across thousands of years of climatic change. We also used 79 subfossil oak log cross sections from northern Missouri, 14C-dated to 9.9 - 3.63 ka (ka is 1000 cal yr BP), to assess the frequency of oak deposition into alluvial sediments and a subset of these oaks for a wood anatomy-based reconstruction of spring paleotemperatures. Temperatures during the Younger Dryas cold period (YD) were up to 3.5°C lower than modern temperatures for that region, equivalent to or lower than those experienced at the northern edge of the modern species range. Compared to extant oaks growing at much higher [CO2], subfossil oaks had greater vessel frequencies. Besides very low theoretical (or estimated) xylem conductivity near the beginning of the oak record near 13.6 ka, vessel frequencies greater than modern trees compensated for reduced vessel dimensions so that theoretical xylem conductivity was consistently above that of modern trees at the cold northern sites. Significant correlations were found between the frequency of 14C-dated oaks and either d18O from the NGRIP (North Greenland Ice Core Project) ice core or from the Cariaco grayscale marine-sediment record from the southern Caribbean sea. Oak deposition into alluvial sediments during the YD was significantly lower than expected given the average sample depth of oaks from 9.9 to 13.6 ka. Reduced oak deposition during the YD suggests that an abrupt shift in climate reduced oak populations across the region and/or changed the rates of channel movement across drainages.
description: Cores Stored at:
# Oregon State University
# 
# These cores were taken to measure growth rates, wood anatomy and stable 
# isotope measurements from dominant and co-dominant trees across tree 
# ages. Two cores were taken for each tree but in most cases only one 
# was measured for ring-widths. The other was destructively sampled for 
# stable isotope measurements. NOAA Template Raw Measurements file added 2019-02-08.
DOI: 10.25921/nzn5-zj64
title: NOAA/WDS Paleoclimatology - North America Last 2ka Decadal Temperature Reconstructions

description: We present two reconstructions of annual average temperature over temperate North America: a tree-ring based reconstruction at decadal resolution (1200-1980 CE) and a pollen-based reconstruction at 30 year resolution that extends back to 480 CE. We maximized reconstruction length by using long but low-resolution pollen records and applied a three-tier calibration scheme for this purpose. The tree-ring-based reconstruction was calibrated against instrumental annual average temperatures on annual and decadal scale, it was then reduced to a lower resolution, and was used as a calibration target for the pollen-based reconstruction. Before the late-19th to the early-21st century, there are three prominent low-frequency periods in our extended reconstruction starting at 480 CE, notably the Dark Ages cool period (about 500-700 CE) and Little Ice Age (about 1200-1900 CE), and the warmer medieval climate anomaly (MCA; about 750-1100 CE). The 9th and the 11th century are the warmest centuries and they constitute the core of the MCA in our reconstruction, a period characterized by centennial-scale aridity in the North American West. These two warm peaks are slightly warmer than the baseline period (1904-1980), but nevertheless much cooler than temperate North American temperatures during the early-21st century.
description: PAGES North America 2k Temperature Reconstructions, including tree-ring based reconstructions at annual and decadal resolution (1200-1980 CE), plus a pollen-based reconstruction at 30 year resolution (480-1950 CE).
DOI: 10.25921/nqe4-rv55
title: NOAA/WDS Paleoclimatology - Paru Co, Tibetan Plateau, China Holocene Multiproxy Sediment Data

description: Sedimentological data and hydrogen isotopic measurements of leaf wax long-chain n-alkanes (dDwax) from an alpine lake sediment archive on the southeastern Tibetan Plateau (Paru Co) provide a Holocene perspective of Indian summer monsoon (ISM) activity. The sedimentological data reflect variations in lake level and erosion related to local ISM rainfall over the Paru Co catchment, whereas dDwax reflects integrated, synoptic-scale ISM dynamics. Our results indicate that maximum ISM rainfall occurred between 10.1 and ~5.2 ka, during which time there were five century-scale high and low lake stands. After 5.2 ka, the ISM trended toward drier conditions to the present, with the exception of a pluvial event centered at 0.9 ka. The Paru Co results share similarities with paleoclimate records from across the Tibetan Plateau, suggesting millennial-scale ISM dynamics were expressed coherently. These millennial variations largely track gradual decreases in orbital insolation, the southward migration of the Intertropical Convergence Zone (ITCZ), decreasing zonal Pacific sea surface temperature (SST) gradients and cooling surface air temperatures on the Tibetan Plateau. Centennial ISM and lake-level variability at Paru Co closely track reconstructed surface air temperatures on the Tibetan Plateau, but may also reflect Indian Ocean Dipole events, particularly during the early Holocene when ENSO variability was attenuated. Variations in the latitude of the ITCZ during the early and late Holocene also appear to have exerted an influence on centennial ISM rainfall. 
description: Holocene sedimentological and leaf wax n-alkane hydrogen isotope data from Paru Co, southeastern Tibetan Plateau.
DOI: 10.25921/ncvz-tz63
title: NOAA/WDS Paleoclimatology - Atlantic Ocean Core Top Trace Element and Stable Isotope Data

description: The thermal structure of the upper ocean (0-1000 m) is set by surface heat fluxes, shallow wind-driven circulation, and the deeper thermohaline circulation. Its long-term variability can be reconstructed using deep-dwelling planktonic foraminifera that record subsurface conditions. Here we used six species (Neogloboquadrina dutertrei, Globorotalia tumida, Globorotalia inflata, Globorotalia truncatulinoides, Globorotalia hirsuta, and Globorotalia crassaformis) from 66 core tops along a meridional transect spanning the mid-Atlantic (42°N to 25°S) to develop a method for reconstructing past thermocline conditions. We estimated the calcification depths from d18O measurements and the Mg/Ca-temperature relationships for each species. This systematic strategy over this large latitudinal section reveals distinct populations with different Mg/Ca-temperature relationships for G. inflata, G. truncatulinoides, and G. hirsuta in different areas. The calcification depths do not differ among the different populations, except for G. hirsuta, where the northern population calcifies much shallower than the southern population. N. dutertrei and G. tumida show a remarkably constant calcification depth independent of oceanographic conditions. The deepest dweller, G. crassaformis, apparently calcifies in the oxygen-depleted zone, where it may find refuge from predators and abundant aggregated matter to feed on. We found a good match between its calcification depth and the 3.2 ml/l oxygen level. The results of this multispecies, multiproxy study can now be applied down-core to facilitate the reconstruction of open-ocean thermocline changes in the past.
description: Trace element ratios (Mg, Sr, Mn, Fe) and stable isotope (d18O, d13C) of 6 planktonic foraminifera species 
(G. dutertrei, G. tumida, G. truncatulinoides, G. inflata, G. crassaformis, G. hirsuta) from 66 coretops in the Atlantic Ocean. 
Coretops are located between 42°N and 25°S. For each coretop sample, 10 to 25 specimens were picked, gently crushed between 
two glass plates,mixed, and split into four aliquots: two replicates for trace element analysis (ICP-OES) and two replicates 
for stable isotope analysis (Optima mass spectrometer).
DOI: 10.25921/nn30-q225
title: NOAA/WDS Paleoclimatology - Kelly fire data from Chopper Lake, Yukon Flats, Alaska - IMPD USCPL008

description: Wildfire activity in boreal forests is anticipated to increase dramatically, with far-reaching ecological and socioeconomic consequences. Paleorecords are indispensible for elucidating boreal fire regime dynamics under changing climate, because fire return intervals and successional cycles in these ecosystems occur over decadal to centennial timescales. We present charcoal records from 14 lakes in the Yukon Flats of interior Alaska, one of the most flammable ecoregions of the boreal forest biome, to infer causes and consequences of fire regime change over the past 10,000 y. Strong correspondence between charcoal-inferred and observational fire records shows the fidelity of sedimentary charcoal records as archives of past fire regimes. Fire frequency and area burned increased ~6,000–3,000 y ago, probably as a result of elevated landscape flammability associated with increased Picea mariana in the regional vegetation. During the Medieval Climate Anomaly (MCA; ~1,000–500 cal B.P.), the period most similar to recent decades, warm and dry climatic conditions resulted in peak biomass burning, but severe fires favored less-flammable deciduous vegetation, such that fire frequency remained relatively stationary. These results suggest that boreal forests can sustain high severity fire regimes for centuries under warm and dry conditions, with vegetation feedbacks modulating climate–fire linkages. The apparent limit to MCA burning has been surpassed by the regional fire regime of recent decades, which is characterized by exceptionally high fire frequency and biomass burning. This extreme combination suggests a transition to a unique regime of unprecedented fire activity. However, vegetation dynamics similar to feedbacks that occurred during the MCA may stabilize the fire regime, despite additional warming.
description: Chronology and macroscopic charcoal counts (number of pieces >180 microns) from Chopper Lake sediments Yukon Flats, Alaska; 
Entity name, CP08 (Internal lab code); 
Contact person, Kelly R.; 
Sampling date, 2008-07-15; 
Sampling device, All cores were taken with a combination of 7.5 cm livingstone, 5 cm livingstone, and 7.5 cm polycarbonate tube; 
Water depth(cm), 940; 
Sample storage, All cores have archive halves intact, and working halves sliced at 0.25-cm resolution. These are kept at 4°C in the Hu Lab, University of Illinois, Urbana.; 
Analysis method, Macroscopic charcoal counts. Please see Kelly et al. 2013 for details;
DOI: 10.25921/npr8-ha09
title: NOAA/WDS Paleoclimatology - Harding Lake, Alaska 31,000 Year Geochemical Data

description: Physical and geochemical proxy analyses of sediment cores from Harding Lake in central Alaska Alaska are used to reconstruct paleoenvironmental change and millennial scale fluctuations in lake level for the last ~ 31,000 years.  We analyzed a composite 422 cm core from the lake depocenter (42.1 m water depth) and identified 4 distinct lithologic units based on variability in dry bulk density, organic matter, biogenic silica, carbon to nitrogen (C/N) mass ratios, organic matter carbon (d13C) isotopes, pollen, and elemental abundances via scanning X-ray fluorescence, with age control provided by 16 Accelerator Mass Spectrometry radiocarbon dates and 210Pb dating.  In addition, we analyzed a transect of cores from 7.1m, 10.75m, 15.91m, and 38.05m water depths to identify lake level fluctuations and to characterize shallow water sediments.  Organic matter content and magnetic susceptibility values in surface sediments from all transect cores show a strong correlation with water depth. Interpretation of four dated lithologic units produced a record of water-depth variations that is consistent with independent climate records from eastern Beringia.  Basal coarse grained sediments (quartz pebble diamicton) were deposited prior to 30,700 calendar years before present (yr BP), possibly due to fluvial reworking or deflation during a period of severe aridity.  Unit 1 sediments were deposited between 30,700 and 15,700 yr BP and are characterized by a low organic matter content, a high magnetic susceptibility, and low biogenic silica concentrations resulting from very low lake levels, low terrestrial and in-lake productivity and a significant flux of clastic sediment.  An abrupt increase in organic matter and biogenic silica marks the transition into Unit 2 sediments, which were deposited between 15,700 and 9,400 yr BP when lake levels were higher and variable (relative to Unit 1).  Unit 3 sediments began forming at 9,400 yr BP, indicating the final transition to full interglacial conditions. Here an abrupt increase in the sedimentation rate, organic matter content, and biogenic silica occurs (along with a corresponding decrease to low magnetic susceptibility).  These high values persist until 8,700 yr BP, signifying a rapid rise to higher lake levels (in comparison to Units 1 and 2).  Unit 4 sediments were deposited between 8,700 yr BP to 2010 AD and contain generally high concentrations of organic matter and biogenic silica with low magnetic susceptibility, suggesting that lake levels were relatively high and stable during the middle to late Holocene.
description: Geochemical data from Harding Lake, Alaska for the last 30,700 yr BP. Data include dry bulk density, percent organic matter, percent biogenic silica, magnetic susceptibility, carbon to nitrogen (C/N) mass ratios, bulk sediment organic matter carbon isotopes (d13C), pollen, and elemental abundances.
DOI: 10.15468/dl.sh6auc
title: Occurrence Download

description: A dataset containing 1060 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Avellinia festucoides",
 "Country is Spain",
 "HasCoordinate is true"
 ]
}

 The dataset includes 1060 records from 34 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0021176-251009101135966/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25921/ns57-xr31
title: NOAA/WDS Paleoclimatology - Voelker - MOFEP Site 1 - QUVE - ITRDB MO058

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/nxnj-hk14
title: NOAA/WDS Paleoclimatology - Eastern Oregon 275 Year PDSI and Precipitation Reconstructions

description: Records of past temperature, precipitation, and other climate variables derived from paleoclimate 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.
description: Reconstructed drought index and precipitation for NOAA Eastern Oregon climate divisions 7 and 8.   
Reference:
Garfin, G. M., and Hughes, M. K., 1996: 
Eastern Oregon Divisional Precipitation and 
Palmer Drought Severity Index from Tree-Rings. 
Report to the U.S. Forest Service Intermountain Research Station. 
USDA Forest Service Cooperative Agreement PNW 90-174.
DOI: 10.25921/n09j-0v41
title: NOAA/WDS Paleoclimatology - Earle - Olympic Road 3116 - PSME - WA088, PAGES North America 2K Version

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