cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.25921/bhb5-ff97
title: NOAA/WDS Paleoclimatology - Kenigsberg - Snake Creek - ABLA - ITRDB CANA382

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/bga0-4d90
title: NOAA/WDS Paleoclimatology - Northwest Pacific Productivity Data During the Last Deglaciation

description: During the Bølling–Allerød warm period of the last deglaciation, about 14 kyr ago, there was a strong and pervasive spike in primary productivity in the North Pacific Ocean1. It has been suggested that this productivity event was caused by an influx of the micronutrient iron from surrounding continental shelves as they were flooded by sea-level rise2. Here we test this hypothesis by comparing numerous proxies of productivity with iron flux and provenance measured from a core from the subarctic Pacific Ocean. We find no evidence for an abrupt deglacial pulse of iron from any source at the time of peak productivity. Instead, we argue that the deglacial productivity peak was caused by two stepwise events. First, deep convection during early deglaciation increased nutrient supply to the surface but also increased the depth of the mixed layer, which pushed surface production deeper in the water column and induced light limitation. A subsequent input of meltwater from northern American ice sheets then stratified the water column, which relieved light limitation while leaving the surface waters enriched in nutrients. We conclude that iron plays, at most, a secondary role in controlling productivity during the glacial and deglacial periods in the subarctic Pacific Ocean.
DOI: 10.25921/bvxm-va38
title: NOAA/WDS Paleoclimatology - Luckman - Nakiska - PCEN - ITRDB CANA443

description: A new network of 21 Picea engelmannii Parry ex Engelm. ring-width chronologies was developed from tree-line sites in the Canadian Rockies. These chronologies range in length from 297 to 648 years (mean 423 years) and have mean sensitivities between 0.16 and 0.20 (mean 0.18), first-order autocorrelations between 0.73 and 0.88 (mean 0.83), and subsample signal strengths >0.85 for 246-494 years (mean 324 years). Mean intersite correlations (A.D. 1700-1982) for chronologies with expressed population signals >0.85 are 0.46 and 0.63 for standard and residual chronologies, respectively. Standard ring-width chronologies are, in general, positively correlated with summer temperatures and negatively correlated with spring and previous summer temperatures. A regional June-September temperature reconstruction for the Banff-Jasper region (BJR; A.D. 1715-1982) was developed using multiple regression of three significant principal components from 14 standard ring-width chronologies. The first principal component contains 55% of the total chronology variance. The model reconstructs 38% of summer temperature variance during the calibration period (1888-1982). The BJR is the first regional temperature reconstruction for this area based on ring-width data from a network of sites. The reconstructed temperature patterns are broadly similar to other regional estimates of past temperatures. Above-average summer temperatures occurred in the mid-20th century and the late 1700s - early 1800s. Most of the 19th century was unusually cold, with the coldest conditions in the late 19th century. Detailed differences between BJR and previously developed reconstructions lie well within 2 sigma confidence limits and may reflect differences in tree species, modelling techniques, spatial coverage, and the seasonal temperature parameter reconstructed.
description: NOAA Template Raw Measurements file added 2019-02-04.
DOI: 10.25921/bbme-4j86
title: NOAA/WDS Paleoclimatology - Fischer - Nordrhein-Westfalen/Eifel dre13 - PCAB - ITRDB GERM185

description: This paper introduces a new procedure to investigate the influence of weather types on spatio-temporal tree-ring growth patterns. Within the framework of the procedure a new proxy-based climate index termed as the atmospheric circulation tree-ring index (ACTI) is calculated that combines weather-type classification data with climate proxies. The new approach is tested using a Central European multi-species tree-ring width network consisting of 115 sites. The procedure used to calculate the ACTI time series includes: 1. Monte Carlo simulations, 2. multiple testing correction, and 3. selection and grouping algorithms. The tree-ring width series are grouped according to their weather-type responses, and the ACTI time series were computed for each group.

The new procedure explains the climate signal preserved in tree-ring chronologies more comprehensively because the complex interaction between the different climate elements is taken into account by using weather-type classification data. Strong correlations between the ACTI and tree-ring width series (r = 0.69) and between the ACTI time series and climate gridded datasets (r > 0.6) were observed. Further a correlation between ACTI and northern hemisphere mean temperatures (r = 0.5) were found. These results indicate that the ACTI enables the investigation of weather-type growth relationships.
description: Purpose of Collection:
# climate/growth relationship NOAA Template Raw Measurements file added 2019-02-05.
DOI: 10.25921/brfb-ry52
title: NOAA/WDS Paleoclimatology - Nelly Bay, Magnetic Island, Australia Mid-Holocene and Modern Coral Luminescence Data and Burdekin River Flow Reconstruction

description: Summer monsoon rainfall in northeastern (NE) Australia exhibits substantial inter-annual variability resulting in highly variable river flows. The occurrence and magnitude of these seasonal river flows are reliably recorded in modern inshore corals as luminescent lines. Here we present reconstructed annual river flows for two ~120-year mid-Holocene windows based on luminescence measurements from five cores obtained from three separate coral colonies. We were able to cross-date the luminescence signatures in four cores from two of the colonies, providing confidence in the derived reconstruction. Present day NE Australian rainfall and river flow are sensitive to El Niño-Southern Oscillation (ENSO) variability, with La Niña (El Niño) events typically associated with wetter (drier) monsoon seasons. Thus, our replicated and annually-resolved coral records provide valuable insights into the northern Australian summer monsoon and ENSO variability at a key period (6?ka) when greenhouse gas levels and ice sheet cover were comparable to the pre-industrial period but orbital forcing was different. Average modern and mid-Holocene growth characteristics were very similar, suggesting that sea surface temperatures off NE Australia at 6ky were also close to present values. The reconstructed river flow record suggests, however, that the mid-Holocene Australian summer monsoon was weaker, less variable from year-to-year (possibly indicative of reduced ENSO variability) and characterised by more within-season flood pulses than present. In contrast to today, the delivery of moisture appears to have been dominated by eastward propagating convective coupled waves associated with the Madden-Julian Oscillation.
description: Radiocarbon dating of contiguous decadal-length segments through NEL03D and NEL07B provided an absolutely dated chronology with a calendar age that spans 6223 to 6098 yr BP. This appears to have been followed by a 60-year gap with NEL01D dated to 6038 to 5918 yr BP. Based on this dating, we assigned Year 0 to the last dated year at the outer edge of NEL01D (i.e. 5918 yr BP). Allowing for the 60-year gap, the youngest year of NEL07B was assigned Year 188 and the oldest year of NEL03D was assigned Year 313. Cross-dating of cores also showed that NEL07 died 44 years after NEL03. Thus, we obtained four time series of coral luminescence from two colonies (NEL03 and NEL07) which could be precisely related to each other and overlapped for 61 years (Years 294 to 234) and a single time series from colony NEL01 for Years 128 to 0.
DOI: 10.15468/dl.bdjcj2
title: Occurrence Download

description: A dataset containing 1379 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Tagelus plebeius",
 "HasCoordinate is true",
 "BasisOfRecord is one of (Observation, Machine Observation, Human Observation, Occurrence evidence)",
 {
 "not" : {
 "OccurrenceStatus" : [
 "is one of (Absent)"
 ]
 }
 }
 ]
}

 The dataset includes 1379 records from 6 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0006191-251009101135966/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25921/b2vw-ps04
title: NOAA/WDS Paleoclimatology - Neuwirth - Nordrhein-Westfalen/Eifel dre02 - FASY - ITRDB GERM174

description: This paper introduces a new procedure to investigate the influence of weather types on spatio-temporal tree-ring growth patterns. Within the framework of the procedure a new proxy-based climate index termed as the atmospheric circulation tree-ring index (ACTI) is calculated that combines weather-type classification data with climate proxies. The new approach is tested using a Central European multi-species tree-ring width network consisting of 115 sites. The procedure used to calculate the ACTI time series includes: 1. Monte Carlo simulations, 2. multiple testing correction, and 3. selection and grouping algorithms. The tree-ring width series are grouped according to their weather-type responses, and the ACTI time series were computed for each group.

The new procedure explains the climate signal preserved in tree-ring chronologies more comprehensively because the complex interaction between the different climate elements is taken into account by using weather-type classification data. Strong correlations between the ACTI and tree-ring width series (r = 0.69) and between the ACTI time series and climate gridded datasets (r > 0.6) were observed. Further a correlation between ACTI and northern hemisphere mean temperatures (r = 0.5) were found. These results indicate that the ACTI enables the investigation of weather-type growth relationships.
description: Purpose of Collection:
# climate/growth relationship NOAA Template Raw Measurements file added 2019-02-05.
DOI: 10.25921/bh6y-mt17
title: NOAA/WDS Paleoclimatology - Bigler - Grindelwald BE Arvengarten - PICE - ITRDB SWIT280

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/b76v-6k11
title: NOAA/WDS Paleoclimatology - Bräker - La Rolaz - PCAB - ITRDB SWIT287

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: Collection purpose: 
# Plentering
# 
# 
# Cores are stored at: 
# disposed
# 
# 
# Notes: 
# Slope W 20%
# Formerly Le_Chenit_Fichte_n84_1994.fh
# 
# References:
# Zingg, A., (1996): 
# Diameter and Basal Area Increment in Permanent Growth and Yield Plots in Switzerland. 
# In: Spiecker, H.; Mielikainen, K.; Kohl, M.; Skovsgaard, J.P. (eds) 
# Growth Trends in European Forests. 
# European Forest Institute Research Report No.5. NOAA Template Raw Measurements file added 2019-02-05.
DOI: 10.25921/b661-mk84
title: NOAA/WDS Paleoclimatology - Luckman - Bennington - PCEN - ITRDB CANA432

description: A new network of 21 Picea engelmannii Parry ex Engelm. ring-width chronologies was developed from tree-line sites in the Canadian Rockies. These chronologies range in length from 297 to 648 years (mean 423 years) and have mean sensitivities between 0.16 and 0.20 (mean 0.18), first-order autocorrelations between 0.73 and 0.88 (mean 0.83), and subsample signal strengths >0.85 for 246-494 years (mean 324 years). Mean intersite correlations (A.D. 1700-1982) for chronologies with expressed population signals >0.85 are 0.46 and 0.63 for standard and residual chronologies, respectively. Standard ring-width chronologies are, in general, positively correlated with summer temperatures and negatively correlated with spring and previous summer temperatures. A regional June-September temperature reconstruction for the Banff-Jasper region (BJR; A.D. 1715-1982) was developed using multiple regression of three significant principal components from 14 standard ring-width chronologies. The first principal component contains 55% of the total chronology variance. The model reconstructs 38% of summer temperature variance during the calibration period (1888-1982). The BJR is the first regional temperature reconstruction for this area based on ring-width data from a network of sites. The reconstructed temperature patterns are broadly similar to other regional estimates of past temperatures. Above-average summer temperatures occurred in the mid-20th century and the late 1700s - early 1800s. Most of the 19th century was unusually cold, with the coldest conditions in the late 19th century. Detailed differences between BJR and previously developed reconstructions lie well within 2 sigma confidence limits and may reflect differences in tree species, modelling techniques, spatial coverage, and the seasonal temperature parameter reconstructed.
description: Cores are stored at:
# # University of Western Ontario
# # 
# # References:
# # McLennan J.  1993.  
# # Development of a new spruce ring-width chronology for the Bennington Valley, British Columbia.  
# # Unpublished B.A. Thesis, Geography, University of Western Ontario. NOAA Template Raw Measurements file added 2019-01-27. NOAA Template Raw Measurements file added 2019-02-04.
DOI: 10.25921/b5s3-sf45
title: NOAA/WDS Paleoclimatology - Bräker - Boulex - QUPE - ITRDB SWIT317

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: Slope S 10%
# Formerly Payerne_Eiche_QUPE_n49_1991.fh NOAA Template Raw Measurements file added 2019-02-05.
DOI: 10.25921/b5rq-z003
title: NOAA/WDS Paleoclimatology - Canadian Arctic and Greenland 15,000 Year July Temperature Reconstructions

description: Holocene temperature variations were reconstructed for the Canadian Arctic Archipelago and coastal Greenland using pollen data from 39 radiocarbon-dated lake sediment cores. Using the modern analog technique, mean July temperatures were estimated for the past 10.2 ka, and regional averages computed. In the western and central Arctic, maximum temperatures were found before 7 ka. In the eastern Canadian Arctic, north Greenland and east Greenland, maximum temperatures were found between 8 and 5 ka, and in southern Greenland after 4 ka. When combined with previously published reconstructions from boreal Canada and eastern Beringia, the Holocene climate history of this region can be divided into three parts with major transitions at 8.0 and 5.2 ka, however, the different regions had different histories.
description: July temperatures based on pollen from lake sediments across the Canadian Arctic Archipelago and Greenland. The Modern Analogue Technique was used to estimate Tjul for 1400 pollen spectra from 39 lakes. Values were then interpolated to 200 year intervals and regional averages computed.
DOI: 10.25921/bfkk-jx04
title: NOAA/WDS Paleoclimatology - Ratcliff - Santiam Pass SNOTEL - PSME - ITRDB OR096

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: These data were collected as part of a pilot study of snowpack effects on earlywood, latewood and whole tree-ring widths and carbon stable isotope composition of latewood. Ring-width series that are names "Small" were taken with a 5 mm diameter borer while other cores were 12mm in diameter. For trees sampled with a 12 mm borer, two or three cores per tree were extracted from each tree and labelled as "A", "B" or "C". The 5 mm and 12 mm diameter cores were from separate trees even though their data may 
# # # display as having the same number. NOAA Template Raw Measurements file added 2019-02-08.
DOI: 10.25921/bba3-4t43
title: NOAA/WDS Paleoclimatology - PAGES Ocean2k Synthesis Data Set

description: The oceans mediate the response of global climate to natural and anthropogenic forcings. Yet for the past 2,000 years - a key interval for understanding the present and future climate response to these forcings - global sea surface temperature changes and the underlying driving mechanisms are poorly constrained. Here we present a global synthesis of sea surface temperatures for the Common Era (CE) derived from 57 individual marine reconstructions that meet strict quality control criteria. We observe a cooling trend from 1 to 1800 CE that is robust against explicit tests for potential biases in the reconstructions. Between 801 and 1800 CE, the surface cooling trend is qualitatively consistent with an independent synthesis of terrestrial temperature reconstructions, and with a sea surface temperature composite derived from an ensemble of climate model simulations using best estimates of past external radiative forcings. Climate simulations using single and cumulative forcings suggest that the ocean surface cooling trend from 801 to 1800 CE is not primarily a response to orbital forcing but arises from a high frequency of explosive volcanism. Our results show that repeated clusters of volcanic eruptions can induce a net negative radiative forcing that results in a centennial and global scale cooling trend via a decline in mixed-layer oceanic heat content.
DOI: 10.25921/bk9r-1689
title: NOAA/WDS Paleoclimatology - Sieben Hengste Cave, Switzerland LGM Stalagmite Oxygen Isotope Data

description: The European Alps are an effective barrier for meridional moisture transport and are thus uniquely placed to record shifts in the North Atlantic storm track pattern associated with the waxing and waning of Late-Pleistocene Northern Hemisphere ice sheets. The lack of well-dated terrestrial proxy records spanning this time period, however, renders the reconstruction of past atmospheric patterns difficult. Here we present a precisely dated, continuous terrestrial record of meteoric precipitation in Europe between 30 and 14.7 ka. In contrast to present-day conditions, our speleothem data provide strong evidence for preferential advection of moisture from the South across the Alps supporting a southward shift of the storm track during the local Last Glacial Maximum (that is, 26.5-23.5 ka). Moreover, our age control indicates that this circulation pattern preceded the Northern Hemisphere precession maximum by ~3 ka, suggesting that obliquity may have played a considerable role in the Alpine ice aggradation.
description: Oxygen isotope (d18O) data from two alpine stalagmites from Sieben Hengste Cave, Switzerland.  The d18O data were combined to get a continuous record of meteoric precipitation between 30 and 14.7 ka. Results provide strong evidence for moisture advection from the South during the Last Glacial maximum, supporting a southward shift of the storm track.