cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.25921/3pq3-8r24
title: NOAA/WDS Paleoclimatology - Lake Malawi 700 Year TEX86 Surface Water Temperature Reconstruction

description: We have applied the TEX86 paleothermometer to produce a surface water temperature record for Lake Malawi spanning the past 700 years. Over much of the record temperature fluctuates from ~24-27°C with a mean of ~25°C; however, there has been a substantial increase in temperature of ~2.0°C during the past ~ 100 years. The TEX86 temperature record reveals a strong similarity to the instrumental record; both records demonstrate warming (~0.7-1.4°C) over the past ~50 years as well as a cooling anomaly around 1959. Comparison of the TEX86 temperature record with the proxy records of primary productivity suggests that wind induced upwelling and/or precipitation have a strong influence on the surface temperature of Lake Malawi.
description: Surface water 700 year temperature reconstruction for Lake Malawi, 
East Africa, produced using the TEX86 paleothermometer. Three cores 
collected during the 1998 International Decade for East African Lakes 
(IDEAL) expedition in the north basin of Lake Malawi were used 
in this study. Splicing data from multi-cores M98-11MCA and M98-11MCB, 
and gravity trigger core M98-2PG, results in a record spanning 
the past ~700 years. Sediment samples (~1-2 g dry weight) were 
collected from the cores and analyzed for TEX86 as described 
in Powers et al. (2005). We have applied the mean annual lake 
surface temperature (ALST) calibration equation, ALST=55.0*TEX86-14.0

Lake Malawi core M98-11MCA/B: 10°00.2'S, 34°17.3'E, water depth 404m.      
Lake Malawi core M98-2PG:      9°58.6'S, 34°13.8'E, water depth 363m.
DOI: 10.25921/31k0-fa42
title: NOAA/WDS Paleoclimatology - Bräker - Haslenau - QUPE - ITRDB SWIT250

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 2019-02-05.
DOI: 10.25921/3s19-te89
title: NOAA/WDS Paleoclimatology - Jacoby - Hentii Mountains - LASI - ITRDB MONG021

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: 10.13140/rg.2.2.17892.58240
title: {60dc8fb2-55da-4513-b1e3-e29f9f33f34f}_Badge_Clarivate_Analytics_Highly_Cited_Researcher
DOI: 10.25921/3hrs-g758
title: NOAA/WDS Paleoclimatology - Buckley - Wat Chan - PIMK - ITRDB TH006

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: 10.13140/rg.2.2.32100.78726
title: SIMULATION OF ECRIS*
DOI: 10.25921/344y-zz91
title: NOAA/WDS Paleoclimatology - Arabas fire data from Lava Cast Forest - IMPD USLCF001

description: We examined the fire history of 11 forest isolates surrounded by lava flows (kipukas) in central Oregon to determine historical differences in fire regimes between kipukas and the surrounding forest, and the role of spatial and environmental variables in fire occurrence. Tree-ring analysis and statistical comparisons show that historical agency records underestimate the number of fires based on the incidence of fire scars. Fires occurred more frequently on kipukas, were typically smaller, and were predominantly lightning-initiated. Except for three widespread fires, fires on kipukas and in the surrounding forest were largely asynchronous. The mean fire-return interval (MFRI) in the surrounding forest decreased following Euro-American settlement and increased on the kipukas with spot-fire removal. This suggests either that forest management and fire exclusion in the surrounding forest decreased fire spread to the kipukas, or that most fires originated on the kipukas. MFRI correlates strongly with distance to the nearest kipuka and a distance-weighted isolation index. The number of fires correlates with elevation change and distance to the nearest kipuka. Fire in naturally fragmented landscapes is influenced by the spatial arrangement of patches, environmental conditions, and human activities. Reconstructing fire histories from forest isolates in the context of their mainland counterparts may have methodological advantages and theoretical implications for forested landscapes characterized by human-imposed insularity.
DOI: 10.15468/dl.6s2yvn
title: Occurrence Download

description: A dataset containing 9 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Zanthoxylum externum",
 "Country is Chile",
 "HasGeospatialIssue is false",
 "HasCoordinate is true",
 "OccurrenceStatus is Present",
 "Year is greater than or equal to 2000"
 ]
}

 The dataset includes 9 records from 2 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0024963-251009101135966/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25921/32kb-w322
title: NOAA/WDS Paleoclimatology - Bigler - Glarus GL - PCAB - ITRDB SWIT189

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: 10.25921/32j1-am64
title: NOAA/WDS Paleoclimatology - Griggs - Tille Höyük - QUSP - ITRDB TURK043

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 2019-01-08. NOAA Template Raw Measurements file added 2019-02-05.
DOI: 10.13140/rg.2.2.20605.77289
title: Mazzotti,T Retórica, a ciência das técnicas noéticas
DOI: 10.25921/3zfn-j767
title: NOAA/WDS Paleoclimatology - Buckley - Mae Hong Son - TEGR - ITRDB TH001

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: 10.25921/3ykv-nn66
title: NOAA/WDS Paleoclimatology - Intensification of southwestern Indonesian rainfall over the past millennium

description: Modern precipitation in Indonesia is strongly correlated to variations in the Asian/Australasian monsoons, the Walker circulation, and migrations of the Intertropical Convergence Zone (ITCZ), but controls on multi-decadal to millennial rainfall variations are less clear. We present a new, high-resolution, precipitation proxy reconstruction from Lake Lading (8S, 113E), Java, from 850 C.E. to present, based on the dD of terrestrial plant waxes. We find that rainfall has steadily increased in Java over the past millennium. This increase persists into the 20th century, despite evidence from other tropical proxy records for a northward ITCZ migration during the last two centuries, which should introduce drier conditions to Java. Aspects of this long-term increase in rainfall resemble records from the northern hemisphere, tropical Indo-Pacific, suggesting that strengthening Walker circulation played an important role in this long-term increase in rainfall and decrease in the dD of precipitation, while ITCZ variations may have been important to climate variations on multi-decadal to centennial timescales.
description: Samples for dDwax analysis were taken at an average resolution of 8.5years (ranging approximately 3 to 25years). One hundred seventy sediment samples were freeze-dried, homogenized, and extracted using a Dionex Accelerated Solvent Extractor 350 to yield the soluble lipid fraction. Fatty acids were then purified according to previously described methods [Konecky et al., 2011]. dD was measured on the C28 n-alkanoic acid, the dominant homologue in all samples, using gas chromatography- pyrolysis-isotope ratio-mass spectrometry. Samples were randomized and run in duplicate, except for a subset of 18 samples that were run in triplicate. The pooled standard deviation of triplicate samples was 1.08%, and the 1-s error on a synthetic fatty acid methyl ester standard run between every six replicates was 2.5%. dDwax values are reported relative to Vienna Standard Mean Ocean Water. 
Leaf wax delta-D(C28 n-alkanoic acid) from Lake Lading, East Java, Indonesia.
ADDITIONAL REFERENCE FOR FATTY ACID PURIFICATION:
Konecky, B. L., Russell, J. M., Johnson, T. C., Brown, E. T., Berke, M. A., Werne, J. P., & Huang, Y. (2011). Atmospheric circulation patterns during late Pleistocene climate changes at Lake Malawi, Africa. Earth and Planetary Science Letters, 312(3), 318–326.
DOI: 10.25921/3rty-zr67
title: NOAA/WDS Paleoclimatology - Lake Igaliku, South Greenland Holocene Multiproxy Sediment Data

description: This is the first integrated multiproxy study to investigate climate, catchment evolution and lake ecology in South Greenland. A 4-m-long sedimentary sequence from Lake Igaliku (61°00'N, 45°26'W, 15m asl) documents major environmental and climatic changes in south Greenland during the last 10 ka. The chronology is based on a 210Pb and 137Cs profile and 28 radiocarbon dates. The paleoenvironmental history is interpreted on the basis of magnetic susceptibility, grain size, total organic carbon, total nitrogen and sulphur, sedimentation rates, pollen, and diatom assemblages. The basal radiocarbon date at ca. 10 cal ka BP provides a minimum age for the deglaciation of the basin, which is followed by ~500 years of high sedimentation rates in a glacio-marine environment. After the glacio-isostatic emergence of the basin ca. 9.5 cal ka BP, limnological and terrestrial proxies suggests early warmth, which may have been interrupted by a cold, dry and windy period between 8.6 and 8.1 cal ka BP. A dry and windy event ~5.3-4.8 cal ka BP preceded the Neoglacial transition at Lake Igaliku, which is characterized by a shift toward moister and perhaps cooler conditions ~4.8 cal ka BP, causing major changes in terrestrial and aquatic ecological conditions. Significant cooling is documented after ~3 cal ka BP. Since ~1 cal ka BP the climatic-driven changes were overprinted by the human influence of Norse and recent agriculture.
description: Multiproxy Holocene sediment data from Lake Igaliku, South Greenland. Paleoenvironmental proxies measured include magnetic susceptibility, grain size, total organic carbon, total nitrogen and sulphur, sedimentation rates, pollen, and diatom assemblages. Lake Igaliku, South Greenland: 61.00°N, 45.43°W, 30m elevation, 23m water depth.
DOI: 10.25921/3w5v-wm35
title: NOAA/WDS Paleoclimatology - Puruogangri Ice Cap 7000 Year Isotope and Geochemical Data

description: Two ice cores (118.4 and 214.7 m in length) were collected in 2000 from the Puruogangri ice cap in the center of the Tibetan Plateau (TP) in a joint US-Chinese collaborative project. These cores yield paleoclimatic and environmental records extending through the Middle Holocene, and complement previous ice-core histories from the Dunde and Guliya ice caps in northeast and northwest Tibet, respectively, and Dasuopu glacier in the Himalaya. The high-resolution Puruogangri climate record since AD 1600 details regional temperature and moisture variability. The post-1920 period is characterized by above-average annual net balance, contemporaneous with the greatest 18O enrichment of the last 400 years, consistent with the isotopically inferred warming observed in other TP ice-core records. On longer timescales the aerosol history reveals large and abrupt events, one of which is dated ~4.7 kyr BP and occurs close to the time of a drought that extended throughout the tropics and may have been associated with centuries-long weakening of the Asian/Indian/African monsoon system. The Puruogangri climate history, combined with the other TP ice-core records, has the potential to provide valuable information on variations in the strength of the monsoon across the TP during the Holocene.
description: Puruogangri ice core oxygen isotopes, dust, ice accumulation, major anions (chloride, nitrate, sulfate) and cations (sodium, ammonium, potassium, magnesium, and calcium), presented as meter, decadal, or centennial averages from 7.0 to 0 ky BP.  

Puruogangri Ice Cap, Tanggula Mountains, Tibetan Plateau: 33°55'N, 89°05'E, 6070 meters above sea level
DOI: 10.25921/3p16-x771
title: NOAA/WDS Paleoclimatology - Borneo Stalagmite 570 to 210 KYrBP Stable Isotope Data

description: Records of atmospheric carbon dioxide concentration (PCO2) and Antarctic temperature have revealed an intriguing change in the magnitude of interglacial warmth and PCO2 at around 430,000 years ago (430 ka), but the global climate repercussions of this change remain elusive. Here, we present a stalagmite-based reconstruction of tropical West Pacific hydroclimate from 570 to 210 ka. The results suggest similar regional precipitation amounts across the four interglacials contained in the record, implying that tropical hydroclimate was insensitive to interglacial differences in PCO2 and high-latitude temperature. In contrast, during glacial terminations, drying in the tropical West Pacific accompanied cooling events in northern high latitudes. Therefore, the tropical convective heat engine can either stabilize or amplify global climate change, depending on the nature of the climate forcing.
description: Oxygen and carbon stable isotope records (d18O and d13C) from 
three stalagmites collected in three different caves in Gunung Mulu 
and Gunung Buda National Parks, Northern Borneo, Malaysia. 
Chronologies were established by 238U-234U-230Th dating. 
Stalagmite GC08 was taken from Green Cathedral Cave in Gunung Buda, 
WR5 from Whiterock Cave in Gunung Mulu, and Squeeze1 was obtained 
from the connection between Clearwater and Wind Caves, in Gunung Mulu. 

Green Cathedral Cave GC08:      4°14'N, 114°55'30"E 
Whiterock Cave WR5:             4°09'N, 114°52'E 
Clearwater/Wind Caves Squeeze1: 4°06'N, 114°50'E
DOI: 10.25921/3msz-gj23
title: NOAA/WDS Paleoclimatology - Yeruu River, Mongolia 300 Year Streamflow Reconstruction

description: In its continuing move toward resource independence, Mongolia has recently entered a new agricultural era. Large crop fields and center-pivot irrigation have been established in the last 10 years across Mongolia's "Breadbasket": the Bulgan, Selenge and Tov aimags of northcentral Mongolia. Since meteorological records are typically short and spatially diffuse, little is known about the frequency and scale of past droughts in this region. We use six chronologies from the eastern portion of the breadbasket region to reconstruct streamflow of the Yeruu River. These chronologies accounted for 60.8% of May-September streamflow from 1959 to 1987 and 74.1% from 1988 to 2001. All split, calibration-verification statistics were positive, indicating significant model reconstruction. Reconstructed Yeruu River streamflow indicates the 20th century to be wetter than the two prior centuries. When comparing the new reconstruction to an earlier reconstruction of Selenge River streamflow, representing the western portion of the breadbasket region, both records document more pluvial events of greater intensity during 20th century versus prior centuries and indicate that the recent decade of drought that lead to greater aridity across the landscape is not unusual in the context of the last 300 years. Most interestingly, variability analyses indicate that the larger river basin in the western breadbasket (the Selenge basin) experiences greater swings in hydroclimate at multi-decadal to centennial time scales while the smaller basin in the eastern portion of the breadbasket (the Yeruu basin) is more stable. From this comparison, there would be less risk in agricultural productivity in the eastern breadbasket region, although the western breadbasket region can potentially be enormously productive for decades at a time before becoming quite dry for an equally long period of time. These results indicate that farmers and water managers need to prepare for both pluvial conditions like those in the late-1700s, and drier conditions like those during the early and mid-1800s. Recent studies have indicated that cultures with plentiful resources are more vulnerable when these resources become diminished. Thus, the instrumental records of the 20th century should not be used as a model of moisture availability. Most importantly, the geographic mismatch between precipitation, infrastructure, and water demand could turn out to be particularly acute for countries like Mongolia, especially as these patterns can switch in space through time.
description: May through September Yeruu River, Mongolia streamflow reconstruction for the last 300 Years, based on six Mongolian tree ring chronologies. 
Median reconstructed streamflow is 87.814 m3/sec
DOI: 10.15156/bio/sh1406640.10fu
title: SH1406640.10FU

description: UNITE provides a unified way for delimiting, identifying, communicating, and working with DNA-based Species Hypotheses (SH). All fungal ITS sequences in the international nucleotide sequence databases are clustered to approximately the species level by applying a set of dynamic distance values (<0.5 - 3.0%). All species hypotheses are given a unique, stable name in the form of a DOI, and their taxonomic and ecological annotations are verified through distributed, web-based third-party annotation efforts. SHs are connected to a taxon name and its classification as far as possible (phylum, class, order, etc.) by taking into account identifications for all sequences in the SH. An automatically or manually designated sequence is chosen to represent each such SH. These sequences are released (https://unite.ut.ee/repository.php) for use by the scientific community in, for example, local sequence similarity searches and next-generation sequencing analysis pipelines. The system and the data are updated automatically as the number of public fungal ITS sequences grows.
DOI: 10.15156/bio/sh1406642.10fu
title: SH1406642.10FU

description: UNITE provides a unified way for delimiting, identifying, communicating, and working with DNA-based Species Hypotheses (SH). All fungal ITS sequences in the international nucleotide sequence databases are clustered to approximately the species level by applying a set of dynamic distance values (<0.5 - 3.0%). All species hypotheses are given a unique, stable name in the form of a DOI, and their taxonomic and ecological annotations are verified through distributed, web-based third-party annotation efforts. SHs are connected to a taxon name and its classification as far as possible (phylum, class, order, etc.) by taking into account identifications for all sequences in the SH. An automatically or manually designated sequence is chosen to represent each such SH. These sequences are released (https://unite.ut.ee/repository.php) for use by the scientific community in, for example, local sequence similarity searches and next-generation sequencing analysis pipelines. The system and the data are updated automatically as the number of public fungal ITS sequences grows.