cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.25921/8kvb-9m11
title: NOAA/WDS Paleoclimatology - Büntgen - BabiaGora - PCAB - ITRDB POLA022

description: We analyzed growth responses to climate of 24 tree-ring width and four maximum latewood density chronologies from the greater Tatra region in Poland and Slovakia. This network comprises 1183 ring-width and 153 density measurement series from four conifer species (Picea abies (L.) Karst., Larix decidua Mill., Abies alba (L.) Karst., and Pinus mugo (L.)) between 800 and 1550 m a.s.l. Individual spline detrending was used to retain annual to multi-decadal scale climate information in the data. Twentieth century temperature and precipitation data from 16 grid-boxes covering the 48-50 °N and 19-21 °E region were used for comparison. The network was analyzed to assess growth responses to climate as a function of species, elevation, parameter, frequency and site ecology. Twenty ring-width chronologies significantly correlated (P < 0.05) with June-July temperatures, whereas the latewood density chronologies were correlated with the April-September temperatures. Climatic effects of the previous-year summer generally did not significantly influence ring formation, whereas site elevation and frequency of growth variations (i.e., inter-annual and decadal) were significant variables in explaining growth response to climate. Response to precipitation increased with decreasing elevation. Correlations between summer temperatures and annual growth rates were lower for Larix decidua than for Picea abies. Principal component analysis identified five dominant eigenvectors that express somewhat contrasting climatic signals. The first principal component contained highest loadings from 11 Picea abies ring-width chronologies and one Pinus mugo ring-width chronology and explained 42% of the network's variance. The mean of these 12 high-elevation chronologies was significantly correlated at 0.62 with June-July temperatures, whereas the mean of three latewood density chronologies, which loaded most strongly on the fourth principal component, significantly correlated at 0.69 with April-September temperatures (P < 0.001 over the 1901-2002 period in both cases). These groupings allow for a robust estimation of June-July (1661-2004) and April-September (1709-2004) temperatures, respectively. Comparison with reconstructions from the Alps and Central Europe supports the general rule of the dominant influence of growing season temperature on high-elevation forest growth.
description: Purpose of Collection: 
# dendroclimatology
# 
# Cores and cross-sections are stored at: 
# WSL
# 
#  NOAA Template Raw Measurements file added 2019-02-05.
DOI: 10.25921/82rn-rm05
title: NOAA/WDS Paleoclimatology - Boswijk - Tudor House, 24 Wynyard Street - AGAU - ITRDB NEWZ103

description: It is not known how global warming will affect the El Niño/Southern Oscillation (ENSO). The instrumental record is too short to discern centennial-scale trends and modelling results are inconclusive1, 2, 3, 4, 5. Proxy reconstructions indicate that ENSO activity was relatively high during the late twentieth century6, 7, 8, 9, 10, but whether this was unusual in the millennial context remains uncertain. Here we present insights into these issues derived from rings of the kauri tree (Agathis australis), a rare long-lived conifer endemic to the forests of northern New Zealand. Our results indicate that the twentieth century was the most ‘ENSO-active’ century of the past 500 years, but may not be unique in the context of the past 700 years, and that ENSO activity comparable to or elevated above that experienced during the late twentieth century is plausible under warmer-than-present conditions. We also find evidence that there may have been significant changes in the ENSO teleconnection to the New Zealand region during the fourteenth and fifteenth centuries, and of multi-decadal fluctuations in ENSO-related activity building up to the present day. Although these two features may delay the expression of increased ENSO activity in the New Zealand region, our results indicate that New Zealand climate is likely to be more dominated by ENSO-related inter-annual variability as the world continues to warm.
description: NOAA Template Chronology file added 2019-04-25.
DOI: 10.25921/8dvz-qw70
title: NOAA/WDS Paleoclimatology - Pakitsoq Greenland Ice Outcrop Gas Stratigraphy Data 2004-2005

description: Horizontal ice-core sites, where ancient ice is exposed at the glacier surface, offer unique opportunities for paleo-studies of trace components requiring large sample volumes. Following previous work at the Pâkitsoq ice margin in West Greenland, we use a combination of geochemical parameters measured in the ice matrix (d18Oice) and air occlusions (d18Oatm, d15N of N2 and methane concentration) to date ice layers from specific climatic intervals. The data presented here expand our understanding of the stratigraphy and three-dimensional structure of ice layers outcropping at Pâkitsoq. Sections containing ice from every distinct climatic interval during Termination I, including Last Glacial Maximum, Bølling/Allerød, Younger Dryas and the early Holocene, are identified. In the early Holocene, we find evidence for climatic fluctuations similar to signals found in deep ice cores from Greenland. A second glacial-interglacial transition exposed at the extreme margin of the ice is identified as another outcrop of Termination I (rather than the onset of the Eemian interglacial as postulated in earlier work). Consequently, the main structural feature at Pâkitsoq is a large-scale anticline with accordion-type folding in both exposed sequences of the glacial-Holocene transition, leading to multiple layer duplications and age reversals.
description: All data are from ice samples collected in the 2004 and 2005 
field seasons at the ancient ice outcrop of Pakitsoq 
(West Greenland) and supplement earlier work on this site 
(2001-2003; Petrenko et al., 2006).  Data are from a network 
of sampling profiles whose details and exact positions are 
provided in Table 2 and Figure 3 of Schaefer et al. (2009). 
Measured data include air content, CH4 concentration [CH4], 
the 15N/14N ratio of N2 (d15N), the 18O/16O ratio of atmospheric 
O2 (d18Oatm) and of the ice matrix (d18Oice). Sample age is a 
function of distance along the sampling profile and may be 
reversed as a consequence of folding. Ages are reported only 
for shorter profiles where the parameters provided sufficient 
age control.  

Gas ages are derived by comparison with equivalent records 
from the Greenland Ice Sheet Project 2 core and placed on 
the gas age scale of Schaefer et al. (2006). 

Precision is given as pooled standard deviations derived 
from triplicate measurements on each of 1-3 replicate samples 
per depth for [CH4] and as pooled standard deviations derived 
from duplicate analyses for d15N and d18O. 

Pooled standard deviations for 2004 are:
[CH4]: 32 ppb (n=74). 
d15N: 0.009 ‰ (n= 51)
d18O: 0.024 ‰ (n= 51)

Pooled standard deviations for 2005 are:
[CH4]: 22 ppb (n=174). 
d15N: 0.009 ‰ (n= 76) (all short profiles); 0.006 ‰ (n= 50) (PK05 EH).
d18O: 0.024 ‰ (n= 76) (all short profiles); 0.027‰ (n= 50) (PK05 EH).
No d15N and d18O duplicates were measured for the following profiles: 
PK04 BAS, PK04 BAN, PK05 MA.
DOI: 10.13140/rg.2.2.12437.12006
title: Divergent responses of β-diversity among organism groups to a strong environmental gradient - AppendixS1
DOI: 10.25921/83dn-8989
title: NOAA/WDS Paleoclimatology - Boswijk - MORS Sample - AGAU - ITRDB NEWZ095

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: 
# # Archaeology - construction (felling dates)
# # 
# # 
# # Cores stored at: 
# # Single sample of unknown provenance. Stored at the Tree-Ring 
# # Laboratory, School of Environment, University of Auckland. Available to 
# # view on site. 
# # 
# # 
# # 
# # NOTES: 
# # Single kauri sample gifted to GB by a builder friend. Probably from 
# # wall lining or sarking. Note that Lat Long and Elevation are for the 
# # School of Environment as of August 2012, as the provenance (structure) 
# # of the sample is unknown. Raw ring width measurement (0.01mm). Sample 
# # contributed to late-Holocene kauri chronology. Crossdating details 
# # available on request.
# # 
# #  NOAA Template Raw Measurements file added 2019-01-24. NOAA Template Raw Measurements file added 2019-02-01.
DOI: 10.25921/8jew-6t44
title: NOAA/WDS Paleoclimatology - D'Arrigo - Muna, Sulawesi - TEGR - ITRDB INDO005

description: The Asian monsoon system affects more than half of humanity worldwide, yet the dynamical processes that govern its complex spatiotemporal variability are not sufficiently understood to model and predict its behavior, due in part to inadequate long-term climate observations. Here we present the Monsoon Asia Drought Atlas (MADA), a seasonally resolved gridded spatial reconstruction of Asian monsoon drought and pluvials over the past millennium, derived from a network of tree-ring chronologies. MADA provides the spatiotemporal details of known historic monsoon failures and reveals the occurrence, severity, and fingerprint of previously unknown monsoon megadroughts and their close linkages to large-scale patterns of tropical Indo-Pacific sea surface temperatures. MADA thus provides a long-term context for recent monsoon variability that is critically needed for climate modeling, prediction, and attribution.
description: Purpose of Collection:  
# Climatology - precipitation analysis  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: 10.15468/dl.gpfv67
title: Occurrence Download

description: A dataset containing 8 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Lestodiplosis pini",
 "Country is United Kingdom of Great Britain and Northern Ireland",
 "HasCoordinate is true"
 ]
}

 The dataset includes 8 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0025149-251009101135966/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25921/8hfh-k340
title: NOAA/WDS Paleoclimatology - Iceland/Greenland Stream Sediment Magnetic Data

description: Magnetic properties of eight particle size ranges from nine locations in Iceland and 26 locations in southern Greenland reveal the importance of source variation for our understanding of paleomagnetic and environmental magnetic records in the marine environment. These terrestrial samples show varying degrees of particle size dependence with all samples showing that the silt fraction possesses greater concentrations of ferrimagnetic minerals than either clay or sand. Fine pseudo-single domain (PSD) size magnetic grains dominate the magnetic assemblage of all Icelandic fractions. In contrast, Greenlandic samples possess greater variation in magnetic grain size; only fine silt and clay are as magnetically fine as the Icelandic PSD grains, while Greenlandic silts and sands are dominated by coarser PSD and multi-domain grains. These observations from potential marine sediment sources suggest that the silt size fraction is a likely driver for much of the concentration-dependent parameters derived from bulk magnetic records and that the magnetic grain size of the silt fraction can be used to discriminate between Icelandic and Greenlandic sources. Using these results to examine magnetic grain size records from marine sediment cores collected across the northern North Atlantic suggests that source, not just transport-controlled physical grain-size, has a significant impact on determining the magnetic grain size at a particular location. Homogeneity of magnetic grain size in Icelandic sediments at least partially explains the consistent quality of paleomagnetic records derived from cores surrounding Iceland and their ability to buffer large environmental changes.
description: Magnetic data (susceptibility, hysteresis) on stream sediments from 78 locations all over Iceland and Greenland, providing data on terrestrial sediment sources to the North Atlantic.
DOI: 10.13140/rg.2.2.11126.40001
title: PENGEMBANGAN DAN VALIDASI METODE ANALISIS HIDROKLOROTIAZID TABLET DENGAN METODE ABSORBANSI DAN LUAS DAERAH DI BAWAH KURVA SECARA SPEKTROFOTOMETRI ULTRAVIOLET
DOI: 10.25921/8f9x-6h81
title: NOAA/WDS Paleoclimatology - Gavin - Bolton Mountain Middle - ACSH - ITRDB VT004

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 2019-02-08.
DOI: 10.13140/rg.2.2.28637.61922
title: Fischer-Tropsch synthesis: from fundamentals to applications
DOI: 10.25921/8ntb-jr15
title: NOAA/WDS Paleoclimatology - Northeast Arizona Tribal Lands 400/650Yr Seasonal Precipitation Reconstructions

description: For over a decade, the Hopi Tribe and Navajo Nation of northeastern Arizona have suffered the effects of persistent drought conditions. Severe dry spells have critically impacted natural ecosystems, water resources, and regional livelihoods including dryland farming and ranching. Drought planning and resource management efforts in the region are based largely on the instrumental climate record, which contains a limited number of severe, sustained droughts. In this study, a new network of moisture-sensitive tree-ring chronologies provides the basis for evaluating the longer-term temporal variability of precipitation in the Four Corners region. By analyzing the earlywood and latewood components within each annual tree ring, we are able to generate separate, centuries-long reconstructions of both cool- (October-April) and warm-season (July-August) precipitation. These proxy records offer new insights into seasonal drought characteristics and indicate that the instrumental record fails to adequately represent precipitation variability over the past 400 years. Through the use of two different analysis techniques, we identify multiyear and decadal-scale drought events more severe than any in the modern era. Furthermore, the reconstructions suggest that many of the historically significant droughts of the past (e.g., 17th century Puebloan drought) were not merely winter phenomena, but persisted through the summer season as well. By comparing these proxy records with historical documents, we are able to independently validate the reconstructions and better understand the socioeconomic and environmental significance of past climate anomalies on the tribal lands of northeastern Arizona.
description: A network of nine Douglas-fir (Pseudotsuga menziesii) and six ponderosa pine (Pinus ponderosa) chronologies from the Four Corners region were updated through the 21st century for this study. Earlywood and latewood widths widths were measured on both the archived and newly collected tree-ring samples.  Stepwise multiple linear regression was used to generate reconstruction models by calibrating the tree-ring chronologies with seasonal precipitation data over their common period (1896-2008 AD). Centuries-long reconstructions of both cool- (October-April) and warm-season (July-August) precipitation were generated.
DOI: 10.25921/8jtw-zn53
title: NOAA/WDS Paleoclimatology - Woodhouse - Tres Piedras - PIPO - ITRDB NM582

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: 10.13140/rg.2.2.29764.83845
title: Stata command for replicating the results of Aiello F. Bonanno G., MULTILEVEL EMPIRICS FOR SMALL BANKS IN LOCAL MARKETS
DOI: 10.13140/rg.2.2.27353.11365
title: Small Banks: the dataset
DOI: 10.25921/8zxp-yv61
title: NOAA/WDS Paleoclimatology - Bunn - Mackenzie Highway - PIBA - ITRDB CANA303

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 2019-02-04.
DOI: 10.25921/8eqm-v542
title: NOAA/WDS Paleoclimatology - Last Glacial Maximum and MIS4 Northern Hemisphere Climate Model Data

description: We explore the hypothesis that the relative size of Pleistocene ice sheets in North America modulated regional climate and alpine glaciation. We compare Pleistocene alpine glacier chronologies across North America with a comprehensive general circulation model using reconstructed ice sheet extents at peak glacial conditions during Marine Isotope Stage (MIS) 2 and MIS 4. The effect of continent-wide ice sheets on atmospheric circulation during MIS 2 led to warming in Beringia and cooling in the western US; less expansive ice sheets during MIS 4 resulted in weaker ice sheet modulation of atmospheric circulation. This led to preservation of MIS 4 moraines in Beringia due to limited MIS 2 glaciation (resulting in a MIS 2/4 moraine sequence) and overriding of MIS 4 moraines - for sites with existing chronologies - in the western United States during MIS 2 (resulting in a MIS 2/6 moraine sequence). Our results highlight how influential ice sheets are for regional climate conditions.
description: Temperature and precipitation model simulations for the Last Glacial Maximum (21ka) and Marine Isotope Stage 4 (66ka).
DOI: 10.25921/8n6j-gy12
title: NOAA/WDS Paleoclimatology - Esper - Kyrgyzstan Low art - JUSP - ITRDB KYRG001

description: We present an analysis of 28 juniper tree-ring sites sampled over the last decades by several research teams in the Tien Shan and Karakorum mountains of western central Asia. Ring-width chronologies were developed on a site-by-site basis, using a detrending technique designed to retain low-frequency climate variations. Site chronologies were grouped according to their distance from the upper timberline in the Tien Shan (~3,400 m a.s.l.) and Karakorum (~4,000 m), and low- and high-elevation composite chronologies combining data from both mountain systems developed. Comparison of these elevational subsets revealed significant coherence (r = 0.72) over the 1438–1995 common period, which is inconsistent with the concept of differing environmental signals captured in tree-ring data along elevational gradients. It is hypothesized that the uniform growth behavior in central Asian juniper trees has been forced by solar radiation variations controlled via cloud cover changes, but verification of this assumption requires further fieldwork. The high-elevation composite chronology was further compared with existing temperature reconstructions from the Karakorum and Tien Shan, and long-term trend differences discussed. We concluded that the extent of warmth during medieval times cannot be precisely estimated based on ring-width data currently available.
description: Purpose of Collection: 
# Dendroclimatology
# 
# Cores and cross-sections are stored at: 
# WSL NOAA Template Raw Measurements file added 2019-04-08.
DOI: 10.13140/rg.2.2.27824.97287
title: Narrativas Hibridas e Remix Audiovisual (Powerpoint)
DOI: 10.25921/8kz8-e778
title: NOAA/WDS Paleoclimatology - Global Eocene Nannoplankton Assemblage Data

description: Nannoplankton play a significant role in the global carbon cycle; changes in the composition of the assemblage can influence primary productivity, carbon burial, and ultimately climate. Here counts of nannofossils in Eocene samples document one of the largest nannoplankton assemblage turnovers of the Cenozoic Era. This event is marked by the global expansion of Reticulofenestra at the termination of the early Eocene climatic optimum (EECO), and continues through the progressive cooling to the earliest Oligocene glaciation. To understand the mechanisms driving this assemblage shift we use multivariate statistical techniques and carbon and oxygen isotope records from localities worldwide. We find that the turnover in the global nannofossil assemblage is tied to thermal destratification of the ocean and a coincident decrease in the efficiency of the oceanic biologic pump at the height of the EECO. We propose that increased vertical mixing and increased nutrient supply to surface waters during the EECO caused a shift in the trophic structure towards enhanced productivity, influencing the global nannoplankton population.
description: Tables of nannofossil counts from Eocene sediments collected from 7 
Ocean Drilling Program (ODP) or Deep Sea Drilling Program (DSDP) 
cores distributed around the global ocean.  Smear slides were 
prepared from sediment and 300 specimens per slide were counted.
DOI: 10.13140/rg.2.2.25938.76484
title: MASTER DEGREE CERTIFICATE
DOI: 10.13140/rg.2.2.29294.20800
title: BACHELOR OF ENGINEERING IN MECHANICAL ENGINEERING CERTIFICATE
DOI: 10.25921/8pp8-b429
title: NOAA/WDS Paleoclimatology - Bunn - Darcey Lake - PIBA - ITRDB CANA300

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 2019-02-04.