cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.25921/fgt1-zz13
title: NOAA/WDS Paleoclimatology - Frappier et al. 2002 Belize Stalagmite Carbon Isotope Data

description: The El Nino/Southern Oscillation (ENSO) system is a prominent component of interannual climate variability, and the Southern Oscillation Index (SOI) is a primary measure of the state of the ENSO system. Here, we present evidence that ENSO-related changes in the terrestrial carbon cycle can be recorded by stalagmites, thus providing a proxy for past El Nino events. Our analysis of a stalagmite from Belize reveals a strong correlation between the SOI and carbon isotope ratios (d13C values), even though the site experiences no discernible local weather effects that are correlated with the SOI. d13C values of this stalagmite must reflect changes in the overlying rainforest ecosystem's carbon budget that are sensitive to subtle modifications of local weather related to ENSO.
description: Belize Stalagmite Carbon Isotope Data. High-resolution stable carbon isotope analysis of a rapidly growing calcite stalagmite (ATM7) from the cave Actun Tunichil Muknal in central Belize. Large and rapid fluctuations in speleothem d13C values indicate a strong correlation between d13C values and recent El Nino events despite lack of any statistically significant correlations between the SOI and local meteorological observations. All results are reported in per mil (‰) relative to V-PDB. Analytical precision better than ± 0.1 per mil (‰)
DOI: 10.25921/fcy0-xt88
title: NOAA/WDS Paleoclimatology - Dünisch - Aripuana - CEOD - ITRDB BRA021

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: Tropical Tree Ring Network SiteID = CEODO_BRA_06
DOI: 10.25921/f6ax-ks37
title: NOAA/WDS Paleoclimatology - Dog Cemetery, Refinery Reef, Reef Berths, Pos Chikitu - Annual Linear Extension Data

description: From 1925 to 1985, Lago Oil and Transport Co. operated a transshipping terminal and refinery on the southeastern coast of Aruba, N.A.  This facility has affected the nearshore marine ecosystem through both oil contamination at the harbor and tanker berths, and from disturbance related to shipping, dredging and construction.  The impact of this facility on nearby coral reef communities was studied from January 1987 to August 1989.  This included an analysis of reef community structure comparing sites adjacent to the refinery with those upstream and downstream, the modern and historical growth of the predominant coral species, and recruitment of new corals.  Both upstream and downstream control sites were in good health and exhibited high diversity.  In contrast, reefs adjacent to the refinery exhibited low density and diversity of live corals and abundant dead coral rubble.  Additionally, periods of construction in the inner harbor and on surrounding spoil islands and high refinery activity corresponded well with periods of reduced coral growth near the refinery.  Although the relative importance of oil contamination, sedimentation and other anthropogenic effects is uncertain, our observations suggest that sedimentation and other physical stress resulted in substantial reductions in environmental quality at the disturbed sites.  Coral recruitment at the highly impacted sites showed hope for recovery if these environments are protected from renewed perturbation.
description: Montastraea annularis colonies from Aruba, N.A. were collected to examine impacts of oil refinery operations on coral growth.  Corals were x-radiographed and measured linear extension is provided. Data are provided from a total of 36 colonies from 4 reefs. The longest core begins in 1898 and ends in 1987. Cores designated with roman numerals included in analysis and Figure 2 of publication. Reef Berths site: only live topped cores (IXL, XL, XIIL) used in analysis and Figure.
Dog Cemetery (12° 24.72' N, 69° 52.44' W): 7 samples 8/1989
Refinery Reef (12° 25.68' N, 69° 54.93' W): 5 samples 1/1987
Reef Berths (12° 26.16' N, 69° 55.77' W): 7 samples 1/1987, 7 stained samples
Pos Chikitu (12° 27.72' N, 69° 58.26' W): 4 samples 1/1987, 6 stained samples
DOI: 10.25921/fr13-a789
title: NOAA/WDS Paleoclimatology - Costa - Chamusca - QUSU - ITRDB PRT003

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
DOI: 10.25921/fc9a-y614
title: NOAA/WDS Paleoclimatology - Cook et al. 2008 700 Year Tree-Ring ENSO Index 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: Reconstructions of Niño 1+2, 3, 3.4, and 4 indices based on tree-ring data from Mexico and Texas.  The reconstructions go back to AD 1300, with the best verified portion beginning in AD 1400. Post-1979 data are all instrumental, reconstructions cover the period AD 1300-1979. The four recons are very similar because they are based on only reconstructing the two leading modes (EOFs) of tropical Pacific December-January-February Sea Surface Temperature variability.
DOI: 10.25921/fzt2-y255
title: NOAA/WDS Paleoclimatology - Aulong Island, Drum Can Island - Oxygen Isotope Data

description: Seasonal sea surface salinity (SSS) records can be of great value in reconstructing El Nino/Southern Oscillation (ENSO) variability in the equatorial Western and Central Pacific, a region where ENSO-related evaporation and precipitation (E-P) changes are dramatic. The d18O values of coral skeleton (d18Ocoral) reflect seawater d18O (d18Oseawater) changes, which in tropical oceans are also generally influenced by E-P changes. Therefore, d18Ocoral is a good indicator of rainfall and ENSO variability. We present biweekly data from Palau, in the northern part of the Western Pacific Warm Pool, for the period 1998-2000, which indicate a strong quantitative relationship between d18Ocoral, sea surface temperature, d18Oseawater and SSS. The coral skeletal d18O values documented the SSS changes after the 1997-98 El Nino; therefore, d18Ocoral can be used to estimate paleosalinity changes. However, the slope of the d18Oseawater - SSS relationship cannot be assumed to be constant throughout the tropics, making site-specific calibrations is essential.
description: Coral oxygen isotope data from Palau Islands in the Western Pacific for 1998 to 2000. The modern corals (Porites spp.) were collected near two small islands inside the main lagoon of Palau: Aulong Island (7 16'23''N, 134 18'07''E) and Drum Can Island (7 17'44''N, 134 24'24''E) at the depth of 3 m and 2.2 m, respectively. Samples for measurement were drilled out at 0.25 to 1-mm intervals. External precision for carbonate standard is 0.03 per mil. The chronologies have been established from X-radiographs, assuming that the distance between dark bands corresponded to one year, with a linear growth rate.
DOI: 10.15468/dl.gg2xaw
title: Occurrence Download

description: A dataset containing 20978 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Gastropoda)",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "Year is greater than or equal to 1980",
 "OccurrenceStatus is Present",
 {
 "not" : {
 "BasisOfRecord" : [
 "is one of (Fossil, Living Specimen)"
 ]
 }
 },
 "Geometry POLYGON((-100 30,-90 30,-90 40,-100 40,-100 30))"
 ]
}

 The dataset includes 20978 records from 36 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0020794-251009101135966/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25921/fmek-p341
title: NOAA/WDS Paleoclimatology - Swetnam fire data from Boletsakwa - IMPD USBOL002

description: Records of past fire occurrence from tree rings, charcoal found in lake sediments, and other 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.  Additional information on the International Multiproxy Database (IMPD) data set procedures are also available.

description: This dataset was contributed as part of the North American Tree-ring Fire Scar Synthesis (NAFSS) project (https://www.ncei.noaa.gov/access/paleo-search/study/34853). Data were contributed to the project from the original data generators.
DOI: 10.25921/fv3w-m780
title: NOAA/WDS Paleoclimatology - Taylor fire data from DM_Susanville - IMPD USSU_001

description: Records of past fire occurrence from tree rings, charcoal found in lake sediments, and other 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.  Additional information on the International Multiproxy Database (IMPD) data set procedures are also available.

description: This dataset was contributed as part of the North American Tree-ring Fire Scar Synthesis (NAFSS) project (https://www.ncei.noaa.gov/access/paleo-search/study/34853). Data were contributed to the project from the original data generators.

Sample Storage Location: 
Dating Method: Dated
Related ITRDB_Chronology: Not Applicable

Fire scar data from this site are available in FHX2 format at:
  https://www.ncei.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/ussu_001.fhx
along with associated metadata at:
  https://www.ncei.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/ussu_001-noaa.txt
DOI: 10.25921/fmz3-5m88
title: NOAA/WDS Paleoclimatology - Leány Cave Geochemical Data from 10500 to 4700 Cal Yr BP

description: This paper presents stable C and O isotope data, as well as water contents and stable hydrogen isotope compositions of inclusion-hosted water of 230Th-dated stalagmites collected from the Leány and Pál-völgyi Caves of Central Hungary, within and about 50 km NW from Budapest, respectively. A good replication of contemporaneous stalagmite oxygen isotope records and their agreement with the COMNISPA record from the Eastern Alps suggest that the stalagmite oxygen isotope variation reflects past climate change. H2O contents in the Leány stalagmite indicate a relationship with the oxygen isotope compositions and hence with climate conditions, raising the possibility of its use as a climate proxy in future studies. The stalagmites show strong negative δ18O excursions for two cold periods at about 5.4–6 and 8–9 ka, whereas the oxygen isotope data are relatively high in the period of 6–7 ka, indicating warmer conditions. The stalagmite hydrogen and d-excess series positively correlate with the COMNISPA record, interpreted as a sign of moisture source variations. High d-excess values in the periods of low δ18O data for the Leány Cave at about 5.4–6 and 8–9 ka suggest a shift to Mediterranean moisture source domination when the COMNISPA record indicate weaker North Atlantic Oscillation (NAO) activity. Lower d-excess values in the period of 6–7 ka are associated with low δ18O values in the COMNISPA record, corresponding to NAO+ phase. The inferred moisture source changes are in accordance with published instrumental data covering the last hundred years and atmospheric circulation model results, and demonstrate that NAO activity influenced the climate conditions of the Carpathian Basin during most of the Holocene.
description: Data contributed as part of SISAL v3 Global Speleothem Isotope and Trace Element Database (https://doi.org/10.25921/jajq-qg60).
DOI: 10.25921/f9qt-jr09
title: NOAA/WDS Paleoclimatology - Ascunsa Cave Geochemical Data from 8200 to -32 Cal Yr BP

description: Here we present a speleothem isotope record (POM2) from Ascunsă Cave (Romania) that provides new data on past climate changes in the Carpathian–Balkan region from 8.2 ka until the present. This paper describes an approach to constrain the effect of temperature changes on calcite δ18O values in stalagmite POM2 over the course of the middle Holocene (6–4 ka), and across the 8.2 and 3.2 ka rapid climate change events. Independent pollen temperature reconstructions are used to this purpose. The approach combines the temperature-dependent isotope fractionation of rain water during condensation and fractionation resulting from calcite precipitation at the given cave temperature. The only prior assumptions are that pollen-derived average annual temperature reflects average cave temperature, and that pollen-derived coldest and warmest month temperatures reflect the range of condensation temperatures of rain above the cave site. This approach constrains a range of values between which speleothem δ18O changes should be found if controlled only by surface temperature variations at the cave site. Deviations of the change in δ18Ocspel values from the calculated temperature-constrained range of change are interpreted towards large-scale variability of climate–hydrology.

Following this approach, we show that an additional ∼0.6‰ enrichment of δ18Oc in the POM2 stalagmite was caused by changing hydrological patterns in SW Romania across the middle Holocene, most likely comprising local evaporation from the soil and an increase in Mediterranean moisture δ18O. Further, by extending the calculations to other speleothem records from around the entire Mediterranean basin, it appears that all eastern Mediterranean speleothems recorded a similar isotopic enrichment due to changing hydrology, whereas all changes recorded in speleothems from the western Mediterranean are fully explained by temperature variation alone. This highlights a different hydrological evolution between the two sides of the Mediterranean.

Our results also demonstrate that during the 8.2 ka event, POM2 stable isotope data essentially fit the temperature-constrained isotopic variability. In the case of the 3.2 ka event, an additional climate-related hydrological factor is more evident. This implies a different rainfall pattern in the Southern Carpathian region during this event at the end of the Bronze Age.
description: Data contributed as part of SISAL v3 Global Speleothem Isotope and Trace Element Database (https://doi.org/10.25921/jajq-qg60). Notes from the SISAL database: Entity POM1 (SISAL entity_id=582): Although it contradicts the published age-depth plot, the author stated that the dates at 30.3mm (dating_id=10380) and 298mm (dating_id=10391) were used to construct the original chronology. However, it is suggested to leave these out in age-depth modelling.
DOI: 10.25921/f17d-9y10
title: NOAA/WDS Paleoclimatology - Margolis fire data from Cerro del Aire East, Northern New Mexico - IMPD USCAE001

description: Records of past fire occurrence from tree rings, charcoal found in lake sediments, and other 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.  Additional information on the International Multiproxy Database (IMPD) data set procedures are also available.

description: This dataset was contributed as part of the North American Tree-ring Fire Scar Synthesis (NAFSS) project (https://www.ncei.noaa.gov/access/paleo-search/study/34853). Data were contributed to the project from the original data generators.

Sample Storage Location: Laboratory of Tree-Ring Research Archive
Dating Method: crossdated
Related ITRDB_Chronology: Not Applicable

Fire scar data from this site are available in FHX2 format at:
  https://www.ncei.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/uscae001.fhx
along with associated metadata at:
  https://www.ncei.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/uscae001-noaa.txt

Extended supplemental information file descriptions (where applicable):
   uscae001-CAE.csv: TreeID, species, tree condition, latitude, longitude, and sample date
DOI: 10.25921/fwh2-xq44
title: NOAA/WDS Paleoclimatology - Weber - MAN - QUPE - ITRDB CHE597

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
DOI: 10.25921/fypc-j850
title: NOAA/WDS Paleoclimatology - Esper - Schmitten, Taunus EDT05 - PCAB - ITRDB DEU454

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
DOI: 10.25921/fjkc-jg80
title: NOAA/WDS Paleoclimatology - Esper - Palatinate Forest KDP06 - PISY - ITRDB DEU483

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
DOI: 10.25921/fnds-7640
title: NOAA/WDS Paleoclimatology - Sawtell Peak, Idaho Whitepark Pine Resin Data from 1990-2014 CE

description: Whitebark pine (Pinus albicaulis) is an important component of high-elevation ecosystems throughout the northern Rocky Mountains; however, the species was recently listed as “threatened” under the Endangered Species Act due to widespread mortality throughout its native range. Land managers tasked with whitebark pine conservation and restoration require information on strategies that can positively influence whitebark pine establishment and promote growth and defense of preexisting trees on the landscape. Our study investigated the response of whitebark pine tree growth and resin duct defenses to thinning and removal of competing shade-tolerant conifers in the Caribou-Targhee National Forest, Idaho, USA. In the nine years following thinning treatments, we found that whitebark pine trees (>12.7 cm diameter at breast height [dbh]) responded favorably to thinning and experienced a 60% increase in basal area increment (52% increase in ring width index) while also producing 34% more resin ducts. Additionally, resin ducts were 23% larger with 49% increased area in the nine years post-thinning compared with trees in the control. Small diameter (<5 cm dbh) whitebark pine in the treatment experienced a dramatic growth release with over 90% increase in basal area increment (74% increase in ring width index). Thinning also created conditions favorable for whitebark pine seedling and sapling establishment. In the treatment, 75% of seedlings and 93% of saplings were whitebark pine, compared with 32% seedlings and 14% saplings in the control. In addition, 93% of overstory trees in the treatment were whitebark pine, compared with 42% in the control. Whitebark pine tree mortality was similar across both the control (26%) and the treatment (25%), indicating that the thinning treatments did not have any adverse impacts on tree mortality. The positive effects of thinning on whitebark pine establishment and tree growth, coupled with the lack of elevated mortality in the treatment, provide strong evidence in support of thinning as a viable silvicultural technique in whitebark pine conservation efforts.
description: Whitebark pine tree-ring data collected near Sawtell Peak, Caribou-Targhee National Forest, eastern Idaho from a control and treatment unit that was mechanically thinned from 1999-2002 to remove non-whitebark pine competitors. Realted to Kichas - Sawtell Peak - PIAL - ITRDB ID037 (https://doi.org/10.25921/fmfg-b579). Provided Keywords: whitebark pine, thinning, growth response, defense, competition, resin ducts
DOI: 10.25921/ffa4-0586
title: NOAA/WDS Paleoclimatology - North Atlantic Geochemistry Data and Bottom Water Temperature Reconstruction during Deglaciation and Early Holocene

description: Model simulations project that the Atlantic Meridional Overturning Circulation (AMOC) will weaken in response to global warming, but with large uncertainty. The past 20 kyr are a prime target for model validation, as boundary conditions are reasonably well known, and the AMOC and climate experienced dramatic changes during this period. Here we present eight subsurface Atlantic temperature reconstructions based on benthic foraminiferal magnesium-to-lithium ratios, and compare the timing and amplitude of reconstructed changes with those in two coupled climate model simulations. We show that compared with the last glaciation and the past 8 kyr, the shallow (~500–1,100 m water depth) tropical North Atlantic was anomalously warm during most of the last deglaciation and early Holocene, which the models suggest is due to a relatively weak AMOC that reduced advection and allowed heat to accumulate. Our temperature reconstructions imply that the AMOC strengthened ~14.7 kyr ago and during the early Holocene (from ~12 to 8 kyr ago), suggesting that enhanced northward heat transport contributed to Northern Hemisphere warming and deglacial melting at these times. The transient model simulations predict features of temperature reconstruction with varying success, possibly because deglacial and Holocene AMOC strength are poorly constrained, and not accurately simulated.
DOI: 10.25921/fn76-0380
title: NOAA/WDS Paleoclimatology - Esper - Col du Zad MCOL - CDAT - ITRDB MAR050

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