cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.25921/xerd-6f44
title: NOAA/WDS Paleoclimatology - Köse - Bolu - PISY - ITRDB TURK049

description: The meteorological observational period in Turkey, which starts ca. 1930 CE, is too short for understanding long-term climatic variability. Tree rings have been used intensively as proxy records to understand summer precipitation history of the region, primarily because they have a dominant precipitation signal. Yet, the historical context of temperature variability is unclear. Here, we used higher-order principle components of a network of 23 tree-ring chronologies to provide a high-resolution spring (March-April) temperature reconstruction over Turkey during the period 1800-2002. The reconstruction model accounted for 67 % (Adj. R2 =  0.64, p < 0.0001) of the instrumental temperature variance over the full calibration period (1930-2002). The reconstruction is punctuated by a temperature increase during the 20th century; yet extreme cold and warm events during the 19th century seem to eclipse conditions during the 20th century. We found significant correlations between our March-April spring temperature reconstruction and existing gridded spring temperature reconstructions for Europe over Turkey and southeastern Europe. Moreover, the precipitation signal obtained from the tree-ring network (first principle component) showed highly significant correlations with gridded summer drought index reconstruction over Turkey and Mediterranean countries. Our results showed that, beside the dominant precipitation signal, a temperature signal can be extracted from tree-ring series and they can be useful proxies in reconstructing past temperature variability.
description: NOAA Template Chronology file added 2018-12-19. NOAA Template Raw Measurements file added 2019-02-05.
DOI: 10.25921/xbm3-pf63
title: NOAA/WDS Paleoclimatology - Ferguson - Southern California (Network 41) - PSMA - ITRDB CA511

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: 10.25921/xgga-5f61
title: NOAA/WDS Paleoclimatology - Barron et al. 2004 High Resolution Guaymas Basin Geochemical, Diatom, and Silicoflagellate Data

description: Deep Sea Drilling Project Site 480 (27°54.10′N, 111°39.34′W; 655 m water depth) contains a high resolution record of paleoceanographic change of the past 15 000 years for the Guaymas Basin, a region of very high diatom productivity within the central Gulf of California. Analyses of diatoms and silicoflagellates were completed on samples spaced every 40–50 yr, whereas ICP–AES geochemical analyses were completed on alternate samples (sample spacing 80–100 yr). The Bølling–Allerød interval (14.6–12.9 ka) (note, ka refers to 1000 calendar years BP throughout this report) is characterized by an increase in biogenic silica and a decline in calcium carbonate relative to surrounding intervals, suggesting conditions somewhat similar to those of today. The Younger Dryas event (12.9–11.6 ka) is marked by a major drop in biogenic silica and an increase in calcium carbonate. Increasing relative percentage contributions of Azpeitia nodulifera and Dictyocha perlaevis (a tropical diatom and silicoflagellate, respectively) and reduced numbers of the silicoflagellate Octactis pulchra are supportive of reduced upwelling of nutrient-rich waters. Between 10.6 and 10.0 ka, calcium carbonate and A. nodulifera abruptly decline at DSDP 480, while Roperia tesselata, a diatom indicative of winter upwelling in the modern-day Gulf, increases sharply in numbers. A nearly coincident increase in the silicoflagellate Dictyocha stapedia suggests that waters above DSDP 480 were more similar to the cooler and slightly more saline waters of the northern Gulf during much of the early and middle parts of the Holocene (∼10 to 3.2 ka). At about 6.2 ka a stepwise increase in biogenic silica and the reappearance of the tropical diatom A. nodulifera marks a major change in oceanographic conditions in the Gulf. A winter shift to more northwesterly winds may have occurred at this time along with the onset of periodic northward excursions (El Niño-driven?) of the North Equatorial Countercurrent during the summer. Beginning between 2.8 and 2.4 ka, the amplitude of biogenic silica and wt% Fe, Al, and Ti (proxies of terrigenous input) increase, possibly reflecting intensification of ENSO cycles and the establishment of modern oceanographic conditions in the Gulf. Increased numbers of O. pulchra after 2.8 ka suggest enhanced spring upwelling.
DOI: 10.25921/xg1n-7k78
title: NOAA/WDS Paleoclimatology - General Circulation Model Output Data Set

description: A global atmospheric model is developed with a computational efficiency which allows long-range climate experiments. The model solves the simultaneous equations for conservation of mass, energy and momentum, and the equation of state on a grid. Differencing schemes for the dynamics are based on work of Arakawa; the schemes do not need any viscosity for numerical stability, and can thus yield good results with coarse resolution. Radiation is computed with a semi-implicit spectral integration, including all significant atmospheric gases, aerosols and cloud particles. Cloud cover and vertical distribution are computed. Convection mixes moisture, heat and momentum, with buoyant air allowed to penetrate to a height determined by its buoyancy. Ground temperature calculations include diurnal variation and seasonal heat storage. Ground hydrology incorporates a water-holding capacity appropriate for the root zone of local vegetation. Snow depth is computed. Snow albedo includes effects of snow age and masking by vegetation. Surface fluxes are obtained from a drag-law formulation and parameterization of the Monin-Obukhov similarity relations.

The initial Model I is used for 60 climate sensitivity experiments with integration times from 3 months to 5 years. These experiments determine the dependence of model simulation on various physical assumptions and model parameters. Several modifications are incorporated to produce Model II, the greatest changes arising from more realistic parameterization of the effect of boundary layer stratification on surface fluxes and the addition of friction in the top stratospheric layer to minimize effects of wave reflection from the rigid model top. The model's climate simulations are compared to observations and a brief study is made of effects of horizontal resolution. It is verified that the major features of global climate can be realistically simulated with a resolution as coarse as 1000 km, which requires an order of magnitude less computation time than used by most general circulation models.
DOI: 10.25921/xz89-gk05
title: NOAA/WDS Paleoclimatology - Boninsegna - Aserradero Isla Grande - NOPU - ITRDB ARGE022

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 2018-12-13. NOAA Template Raw Measurements file added 2019-04-29.
DOI: 10.25921/xgmc-hv26
title: NOAA/WDS Paleoclimatology - Dean - Hay Hollow Valley - PIED - ITRDB AZ099

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: 10.25921/xen3-a775
title: NOAA/WDS Paleoclimatology - Umbanhowar Fire Data from Kelly Dudley, Eastern North America (Paleon) - IMPD USKDL001

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: Provided Keywords: fire, paleoclimate, climate, charcoal
DOI: 10.25921/xfhm-2398
title: NOAA/WDS Paleoclimatology - Paleo-pCO2 Database ODP999 4.6 Million Year Boron Isotope and CO2 Data

description: Several hypotheses have been put forward to explain the onset of intensive glaciations on Greenland, Scandinavia, and North America during the Pliocene epoch between 3.6 and 2.7 million years ago (Ma). A decrease in atmospheric CO2 may have played a role during the onset of glaciations, but other tectonic and oceanic events occurring at the same time may have played a part as well. Here we present detailed atmospheric CO2 estimates from boron isotopes in planktic foraminifer shells spanning 4.6-2.0 Ma. Maximal Pliocene atmospheric CO2 estimates gradually declined from values around 410 uatm to early Pleistocene values of 300 uatm at 2.0 Ma. After the onset of large-scale ice sheets in the Northern Hemisphere, maximal pCO2 estimates were still at 2.5 Ma +90 uatm higher than values characteristic of the early Pleistocene interglacials. By contrast, Pliocene minimal atmospheric CO2 gradually decreased from 310 to 245 uatm at 3.2 Ma, coinciding with the start of transient glaciations on Greenland. Values characteristic of early Pleistocene glacial atmospheric CO2 of 200 uatm were abruptly reached after 2.7 Ma during the late Pliocene transition. This trend is consistent with the suggestion that ocean stratification and iron fertilization increased after 2.7 Ma in the North Pacific and Southern Ocean and may have led to increased glacial CO2 storage in the oceanic abyss after 2.7 Ma onward.
description: Paleo-CO2 derived from boron isotope measurements on marine sediment core ODP999A for the past 4.6 million years, contributed to the Paleo-pCO2 Database.
DOI: 10.25921/xmb5-g973
title: NOAA/WDS Paleoclimatology - Eastern Dronning Maud Land, Antarctica oxygen isotope and accumulation rate data from 1956-1996 CE

description: During 1996–97 a European Project for Ice Coring in Antarctica (EPICA) pre-site surveying traverse worked in the area between 70° S, 5° E and 75° S, 15° E in Dronning Maud Land. We present data obtained from 10 and 20 m deep firn cores drilled between the coast and 600 km inland (to 3450 m a.s.l.). The cores were analyzed for electrical conductivity measurements and total ? activity to obtain accumulation data between known time horizons. In addition, some ofthe cores were analyzed for oxygen isotopes. Annual accumulation varies from 271 mm w.e. at Fimbulisen to 24 mm w.e. at 2840 m a.s.l. Accumulation at core sites 2400–3000 m a.s.l. has increased by 16–48% since 1965 compared to the 1955–65 period. However, the core sites above 3250 m a.s.l. and one core location on the ice shelf show a decrease during the same period. Furthermore, no change can be detected at the most inland site for the period 1815–1996. In all the cores the last few years seem to have been some of the warmest in these records.
description: DML data contributed to the PAGES 2k project. Average annual snow accumulation rate for site L89 over the 1965-1996 period was 41 kg/m2/yr.
       Provided Keywords: oxygen isotope of water, temperature proxy, accumulation rate
DOI: 10.15468/dl.tbursg
title: Occurrence Download

description: A dataset containing 3 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Loxoconcha parvifoveata",
 "Country is New Zealand",
 "HasCoordinate is true"
 ]
}

 The dataset includes 3 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0009887-251009101135966/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.22008/fk2/iw73uu/2olqnr
title: QAS_U_hour.csv

description: Uploaded with pyDataverse 2025-11-17 09:55
DOI: 10.22008/fk2/iw73uu/lagglu
title: QAS_U_hour.nc

description: Uploaded with pyDataverse 2025-11-17 09:55
DOI: 10.22008/fk2/iw73uu/sakmlw
title: QAS_U_month.nc

description: Uploaded with pyDataverse 2025-11-17 09:55
DOI: 10.22008/fk2/iw73uu/sgbcqk
title: QAS_U_day.csv

description: Uploaded with pyDataverse 2025-11-17 09:56
DOI: 10.22008/fk2/iw73uu/worrjb
title: QAS_U_month.csv

description: Uploaded with pyDataverse 2025-11-17 09:56
DOI: 10.22008/fk2/iw73uu/lawiut
title: QAS_U_day.nc

description: Uploaded with pyDataverse 2025-11-17 09:56
DOI: 10.15468/dl.6as8qs
title: Occurrence Download

description: A dataset containing 230 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Cladonia pocillum)",
 "Country is one of (Norway)",
 "HasCoordinate is true",
 "OccurrenceStatus is Present",
 "CoordinateUncertaintyInMeters is less than or equal to 1000",
 "Year is greater than or equal to 1986",
 "Year is less than or equal to 2025",
 {
 "not" : {
 "BasisOfRecord" : [
 "is Fossil"
 ]
 }
 },
 {
 "not" : {
 "BasisOfRecord" : [
 "is Machine Observation"
 ]
 }
 }
 ]
}

 The dataset includes 230 records from 8 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0025101-260208012135463/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.22008/fk2/iw73uu/sm6yst
title: NUK_K_hour.csv

description: Uploaded with pyDataverse 2025-11-17 09:57
DOI: 10.15468/dl.vn75q2
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Cladonia galindezii)",
 "Country is one of (Norway)",
 "HasCoordinate is true",
 "OccurrenceStatus is Present",
 "CoordinateUncertaintyInMeters is less than or equal to 1000",
 "Year is greater than or equal to 1986",
 "Year is less than or equal to 2025",
 {
 "not" : {
 "BasisOfRecord" : [
 "is Fossil"
 ]
 }
 },
 {
 "not" : {
 "BasisOfRecord" : [
 "is Machine Observation"
 ]
 }
 }
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0025102-260208012135463/datasets/export for details.
DOI: 10.22008/fk2/iw73uu/a2gpkf
title: NUK_K_hour.nc

description: Uploaded with pyDataverse 2025-11-17 09:57
DOI: 10.22008/fk2/iw73uu/owtdxk
title: NUK_K_day.nc

description: Uploaded with pyDataverse 2025-11-17 09:57
DOI: 10.15468/dl.en66wd
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Schaereria fabispora)",
 "Country is one of (Norway)",
 "HasCoordinate is true",
 "OccurrenceStatus is Present",
 "CoordinateUncertaintyInMeters is less than or equal to 1000",
 "Year is greater than or equal to 1986",
 "Year is less than or equal to 2025",
 {
 "not" : {
 "BasisOfRecord" : [
 "is Fossil"
 ]
 }
 },
 {
 "not" : {
 "BasisOfRecord" : [
 "is Machine Observation"
 ]
 }
 }
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0025100-260208012135463/datasets/export for details.
DOI: 10.22008/fk2/iw73uu/qf2803
title: NUK_K_month.nc

description: Uploaded with pyDataverse 2025-11-17 09:58
DOI: 10.22008/fk2/iw73uu/bbjqjq
title: NUK_K_month.csv

description: Uploaded with pyDataverse 2025-11-17 09:58
DOI: 10.22008/fk2/iw73uu/zfg0wt
title: NUK_K_day.csv

description: Uploaded with pyDataverse 2025-11-17 09:58
DOI: 10.5281/zenodo.18674244
title: Dataset: Air Quality Dataset for Changchun (2022-08-01 to 2026-02-18)

description: This dataset contains historical air quality time series for Changchun covering 2022-08-01 to 2026-02-18. It includes key air pollution indicators such as AQI indices and major pollutants, plus city metadata including coordinates, administrative areas, and population. Use this dataset to analyze long-run air quality trends in Changchun, compare Changchun with other cities, and build models that link air quality to urban characteristics. Air quality values are retrieved from the Open-Meteo Air Quality service using the cams_global domain, and city metadata is derived from the GeoNames city list. Nitiraj Kulkarni
DOI: 10.5281/zenodo.18674245
title: Dataset: Air Quality Dataset for Changchun (2022-08-01 to 2026-02-18)

description: This dataset contains historical air quality time series for Changchun covering 2022-08-01 to 2026-02-18. It includes key air pollution indicators such as AQI indices and major pollutants, plus city metadata including coordinates, administrative areas, and population. Use this dataset to analyze long-run air quality trends in Changchun, compare Changchun with other cities, and build models that link air quality to urban characteristics. Air quality values are retrieved from the Open-Meteo Air Quality service using the cams_global domain, and city metadata is derived from the GeoNames city list. Nitiraj Kulkarni
DOI: 10.22008/fk2/iw73uu/dizpiw
title: ZAC_A_month.csv

description: Uploaded with pyDataverse 2025-11-17 09:58
DOI: 10.15468/dl.q7mycz
title: Occurrence Download

description: A dataset containing 393211 species occurrences available in GBIF matching the query:
{
 "and" : [
 "GbifRegion is Latin America and the Caribbean",
 "TaxonKey is Glaucidium"
 ]
}

 The dataset includes 393211 records from 341 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0025042-260208012135463/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.22008/fk2/iw73uu/n2icch
title: ZAC_A_day.csv

description: Uploaded with pyDataverse 2025-11-17 09:59
DOI: 10.5517/cc74kzw
title: CCDC 212938: Experimental Crystal Structure Determination

description: Related Article: H.Hemissi, S.Abid, M.Rzaigui|2004|Anal.Sci.:X-Ray Struct.Anal.Online|20|x1|doi:10.2116/analscix.20.x1
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc7m12y
title: CCDC 226829: Experimental Crystal Structure Determination

description: Related Article: V.Bhalla, M.Kumar, C.Kabuto, T.Hattori, S.Miyano|2004|Chem.Lett.|33|184|doi:10.1246/cl.2004.184
description: Related Article: V.Bhalla, M.Kumar, T.Hattori, S.Miyano|2004|Tetrahedron|60|5881|doi:10.1016/j.tet.2004.05.035
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc6x407
title: CCDC 205778: Experimental Crystal Structure Determination

description: Related Article: N.Nakamura, A.Hirakawa, J.-J.Gao, H.Kakuda, M.Shiro, Y.Komatsu, Chia-chin Sheu, M.Hattori|2004|J.Nat.Prod.|67|46|doi:10.1021/np030293k
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc72dc1
title: CCDC 210842: Experimental Crystal Structure Determination

description: Related Article: Dong-Sheng Zhu, Ze-Min Mei, Chun-Sheng Lu, Wei Gao, Yue-Tao Zhang, Ying Mu, Zong-Mu Wang|2003|Polyhedron|22|3523|doi:10.1016/j.poly.2003.09.012
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc72dd2
title: CCDC 210843: Experimental Crystal Structure Determination

description: Related Article: Dong-Sheng Zhu, Ze-Min Mei, Chun-Sheng Lu, Wei Gao, Yue-Tao Zhang, Ying Mu, Zong-Mu Wang|2003|Polyhedron|22|3523|doi:10.1016/j.poly.2003.09.012
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc72df3
title: CCDC 210844: Experimental Crystal Structure Determination

description: Related Article: Dong-Sheng Zhu, Ze-Min Mei, Chun-Sheng Lu, Wei Gao, Yue-Tao Zhang, Ying Mu, Zong-Mu Wang|2003|Polyhedron|22|3523|doi:10.1016/j.poly.2003.09.012
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc6ygvf
title: CCDC 207075: Experimental Crystal Structure Determination

description: Related Article: Haitao Xu, Yadong Li|2004|J.Mol.Struct.|690|137|doi:10.1016/j.molstruc.2003.11.032
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc72cbz
title: CCDC 210810: Experimental Crystal Structure Determination

description: Related Article: Haitao Xu, Yadong Li|2004|J.Mol.Struct.|690|137|doi:10.1016/j.molstruc.2003.11.032
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.