cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.25921/7zpr-2f40
title: NOAA/WDS Paleoclimatology - Farris fire data from Mica Mountain - IMPD US03_20B

description: Fire scars are used widely to reconstruct historical fire regime parameters in forests around the world. Because fire scars provide incomplete records of past fire occurrence at discrete points in space, inferences must be made to reconstruct fire frequency and extent across landscapes using spatial networks of fire-scar samples. Assessing the relative accuracy of fire-scar fire history reconstructions has been hampered due to a lack of empirical comparisons with independent fire history data sources. We carried out such a comparison in a 2780-ha ponderosa pine forest on Mica Mountain in southern Arizona (USA) for the time period 1937–2000. Using documentary records of fire perimeter maps and ignition locations, we compared reconstructions of key spatial and temporal fire regime parameters developed from documentary fire maps and independently collected fire-scar data (n = 60 plots). We found that fire-scar data provided spatially representative and complete inventories of all major fire years (>100 ha) in the study area but failed to detect most small fires. There was a strong linear relationship between the percentage of samples recording fire scars in a given year (i.e., fire-scar synchrony) and total area burned for that year (y = 0.0003x + 0.0087, r2 = 0.96). There was also strong spatial coherence between cumulative fire frequency maps interpolated from fire-scar data and ground-mapped fire perimeters. Widely reported fire frequency summary statistics varied little between fire history data sets: fire-scar natural fire rotations (NFR) differed by <3 yr from documentary records (29.6 yr); mean fire return intervals (MFI) for large-fire years (i.e., ≥25% of study area burned) were identical between data sets (25.5 yr); fire-scar MFIs for all fire years differed by 1.2 yr from documentary records. The known seasonal timing of past fires based on documentary records was furthermore reconstructed accurately by observing intra-annual ring position of fire scars and using knowledge of tree-ring growth phenology in the Southwest. Our results demonstrate clearly that representative landscape-scale fire histories can be reconstructed accurately from spatially distributed fire-scar samples.
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, University of Arizona
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/us03_20b.fhx
along with associated metadata at:
  https://www.ncei.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/us03_20b-noaa.txt
DOI: 10.5517/cc9j611
title: CCDC 283682: Experimental Crystal Structure Determination

description: Related Article: J.Robertson, S.J.Bell, A.Krivokapic|2005|Org.Biomol.Chem.|3|4246|doi:10.1039/b512826a
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/cc9j622
title: CCDC 283683: Experimental Crystal Structure Determination

description: Related Article: J.Robertson, S.J.Bell, A.Krivokapic|2005|Org.Biomol.Chem.|3|4246|doi:10.1039/b512826a
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: 10.25921/7tjc-yx98
title: NOAA/WDS Paleoclimatology - Bonney - Terra Cotta Forest CA B (Site 10) - ACSH - ITRDB CANA664

description: Time-series of satellite-derived vegetation proxies and tree-rings widths (TRW) are similar, providing temporal records of forest productivity change from different perspectives and processes. Previous research on this relationship has focused on temperature or moisture limited coniferous forests, using lower spatial resolution (e.g., 8000 m) satellites and normalized difference vegetation index (NDVI) to test relationships over 15-30 years. There is an opportunity to leverage recent advances in building Landsat (30 m) time-series to expand comparisons into new forest types (e.g., coniferous vs. deciduous), areas (e.g., fragmented forests) and over longer periods (e.g., nearly 50 years). However, a better understanding of factors that influence relationship strength is required. We compared tree-ring measurements, converted to a ring width index (RWI), and Landsat tasseled cap angle (TCA) derived canopy cover (CC) from 1972 to 2018 across 16 deciduous, mixed, and coniferous stands in southern Ontario, Canada. For all chronologies, overall relationship strength was assessed with correlation approaches (RWI-CC, both vs. climate), and shorter-term increase-decline trends were compared with segmented regression. There were significant forest type differences, with coniferous chronologies correlating stronger with CC than deciduous. Deciduous chronologies and CC had opposite connections with summer temperature, with climate warming increasing CC and coniferous RWI but not deciduous RWI from 1980 to 2010. More recent decline at most sites appears related to a major ice storm, but multiple factors may be coexisting. We tested the utility of tree-rings for validating nearly 50 years of Landsat-observed change in urban-rural temperate forests, identifying useful connections at coniferous sites. However, there are limitations to comparing long-term Landsat time-series (based on yearly summer data) with annual tree-ring growth.
description: NOAA Template Raw Measurements file added 2022-09-08.
DOI: 10.5517/cc8x46h
title: CCDC 265366: Experimental Crystal Structure Determination

description: Related Article: M.Koikawa, M.Ohba, T.Tokii|2005|Polyhedron|24|2257|doi:10.1016/j.poly.2005.03.084
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/cc9j633
title: CCDC 283684: Experimental Crystal Structure Determination

description: Related Article: J.Robertson, S.J.Bell, A.Krivokapic|2005|Org.Biomol.Chem.|3|4246|doi:10.1039/b512826a
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: 10.15468/dl.4x4374
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Galliformes)",
 "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((-30 50,-20 50,-20 60,-30 60,-30 50))"
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0025128-251009101135966/datasets/export for details.
DOI: 10.25921/7m04-eh65
title: NOAA/WDS Paleoclimatology - Iniguez fire data from Catalina Rose Canyon CRC04 - IMPD USCRC_04

description: Fire histories contribute important information to contemporary fire planning, however, our knowledge is not comprehensive geographically. We evaluated the influence of topography on fire history patterns in two contrasting landscapes within the Santa Catalina Mountains of southeastern Arizona. Multiple fire-scarred trees from randomly selected 2-ha plots were used to develop plot composite mean fire intervals (PCMFIs) within the Butterfly Peak (BP) and Rose Canyon (RC) landscapes. BP is dominated by steep, northerly aspects and presence of potential fire spread barriers (exposed rock bluffs and scree slopes). RC is dominated by more gentle and southerly aspects with relatively few fire barriers. Within each landscape, PCMFIs did not differ significantly between aspect classes from A.D. 1748 to 1910 (BP: p = 0.73 and RC: p = 0.57). Pooled PCMFIs in the gentler RC landscape were, however, significantly shorter (p < 0.001) than in the steeper BP landscape. The frequency of relatively widespread fires (i.e., number of fire years when ≥2 plots scarred) was similar between landscapes, but fires in the gentler RC landscape were significantly larger (p = 0.033). The higher frequency of large fires (i.e., fires that burned >75% of the landscape) in RC resulted in more area burned over time and shorter fire intervals at individual plots. Conversely, smaller fires in the dissected BP landscape resulted in less area burned and longer periods between fires at individual plots. The different topographies in the two landscapes likely result in different wind intensities, fuel moistures, and fuel/vegetation types—and consequently, different historical fire spread patterns. Our conclusion is that fire history patterns are not influenced primarily by stand-scale topography, but rather by the topographic characteristics of the broader, surrounding landscape.
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, University of Arizona
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/uscrc_04.fhx
along with associated metadata at:
  https://www.ncei.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/uscrc_04-noaa.txt
DOI: 10.5517/cc8x47j
title: CCDC 265367: Experimental Crystal Structure Determination

description: Related Article: M.Koikawa, M.Ohba, T.Tokii|2005|Polyhedron|24|2257|doi:10.1016/j.poly.2005.03.084
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/cc8x48k
title: CCDC 265368: Experimental Crystal Structure Determination

description: Related Article: M.Koikawa, M.Ohba, T.Tokii|2005|Polyhedron|24|2257|doi:10.1016/j.poly.2005.03.084
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: 10.25921/7gf5-me24
title: NOAA/WDS Paleoclimatology - Western Cuba Speleothem Oxygen Isotope Record over the last 100,000 Years

description: We present a speleothem record from western Cuba, spanning the period 98.7–84.9 ka BP. Our record shows two distinctive periods of high d18O corresponding to dry and/or cold periods during 85–87.6 and 90.2–93.1 ka BP, synchronous with Heinrich events 8 and 9 (H8 and H9). Hence, we provide the first proxy evidence of the local Caribbean climate response to H8 and H9. Interestingly, H8 is more pronounced compared to H9, which may be a local response to lower temperatures in the North Atlantic resulting in a weak AMOC and reduced deep water formation, therefore a stronger south shift of the ITCZ. Our data complement existing speleothem records from western Cuba which, collectively, provide a nearly continuous paleoclimate time-series spanning the last 100 ka BP, indicating a consistent response to millennial-scale events as dry and/or cooler conditions. The comparison with regional paleoclimate records reveals an anti-phased relationship with South America, caused by the southern movements of the ITCZ during millennial-scale events which lead to dry conditions in the Caribbean and a stronger South American Monsoon System.
description: Provided Keywords: Henirich events, Cuba, Caribbean
DOI: 10.5517/cc8kz3w
title: CCDC 255598: Experimental Crystal Structure Determination

description: Related Article: R.D.Willett, R.Butcher, C.P.Landee, B.Twamley|2005|Polyhedron|24|2222|doi:10.1016/j.poly.2005.03.121
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/cc8kzb3
title: CCDC 255605: Experimental Crystal Structure Determination

description: Related Article: R.D.Willett, R.Butcher, C.P.Landee, B.Twamley|2005|Polyhedron|24|2222|doi:10.1016/j.poly.2005.03.121
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: 10.25921/7nex-5869
title: NOAA/WDS Paleoclimatology - Hartl - Traunstein, Schiffahrtswald - FASY - ITRDB DEU419

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: 10.5517/cc8kzc4
title: CCDC 255606: Experimental Crystal Structure Determination

description: Related Article: R.D.Willett, R.Butcher, C.P.Landee, B.Twamley|2005|Polyhedron|24|2222|doi:10.1016/j.poly.2005.03.121
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: 10.25921/72g1-sg07
title: NOAA/WDS Paleoclimatology - Simic fire data from Meyer West, Western Slope - IMPD USMYW001

description: The historical role of fire in sagebrush (Artemisia tridentata) landscapes remains poorly understood, yet is important to inform management and conservation of obligate species such as the threatened Gunnison Sage-grouse (GUSG; Centrocercus minimus). We reconstructed fire histories from tree-ring fire scars at sagebrush–forest ecotones (10 sites, 111 trees) to better understand the role of fire in sagebrush landscapes of the Upper Gunnison Basin (UGB), Colorado, and how fire may have changed following Euro-American settlement. We assessed likely influences of historical fire by surveying plant composition and structure at 100 sagebrush sites with and without recent (2001–2020) fires. Tree-ring fire scars revealed a history of repeated low-severity fire at sagebrush–forest ecotones until 1892, followed by over a century without fire. Between 1684 and 1892, the mean fire interval (MFI) among sites averaged 49.6 years (ranging from 18.2 to 119 years). Fire over this period occurred synchronously at two or more sites on average every 23.6 years, potentially indicative of spread between sites. Most (70%) of the historical fires burned in the early growing season, consistent with times of strong wind. Recent burns exhibited reductions in sagebrush cover (5% vs. 25% in unburned sites) and concomitant increases in herbaceous cover (55% vs. 40%). These differences declined over time but persisted for at least two decades. Burned sites were dominated by native perennial grasses, forbs, and resprouting shrub species. Historically, such openings may have served as seasonal GUSG habitat. Our results indicate that parts of the UGB sagebrush landscapes were characterized historically by frequent fire and dynamic vegetation mosaics that included open, grassy patches. These findings support the use of prescribed fire to restore and maintain this ecological process and vegetation heterogeneity. However, the contemporary context for fire has changed and now includes substantially reduced, Endangered Species Act (ESA)-listed GUSG populations, increased risk of non-native plant invasion, and climate warming. These circumstances highlight new risks, information needs, and opportunities for key knowledge co-production via management–research partnerships.
DOI: 10.5517/cc8kz81
title: CCDC 255603: Experimental Crystal Structure Determination

description: Related Article: R.D.Willett, R.Butcher, C.P.Landee, B.Twamley|2005|Polyhedron|24|2222|doi:10.1016/j.poly.2005.03.121
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/cc8kzd5
title: CCDC 255607: Experimental Crystal Structure Determination

description: Related Article: R.D.Willett, R.Butcher, C.P.Landee, B.Twamley|2005|Polyhedron|24|2222|doi:10.1016/j.poly.2005.03.121
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: 10.15468/dl.rp8xka
title: Occurrence Download

description: A dataset listing the 42 species recorded in GBIF matching the query:
{
 "DatasetKey" : [
 "is Arboles Patrimoniales del Distrito Metropolitano de Quito"
 ]
}

 The dataset's 42 records were derived from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0010010-251009101135966/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.17632/4pywst36cd
title: Pressure Swing Adsorption in Microsoft Excel – Basic Version (v1.0) - A learning tool for Chemical Engineering students

description: This Excel workbook was developed as part of the final year design project at the University of Surrey and is intended as an educational and illustrative tool for simulating Pressure Swing Adsorption (PSA) processes. The spreadsheets are self-explanatory and demonstrate how breakthrough curves and multi-cycle PSA simulations can be generated using fundamental mass transfer equations.

Please note that the data used in this tool are not experimentally obtained. Instead, key process parameters—including bed and adsorbent properties, flow rate, and isotherm characteristics—are assumed values, selected to illustrate the application of the method of lines for solving the mass balance equations commonly embedded in commercial simulation tools such as Aspen Adsorption.

For simplicity, the model assumes:

Axial dispersion

Linear adsorption isotherms

Plug flow dynamics

If users input the appropriate bed properties, adsorbent parameters, flow rate, and adsorption isotherm, the Excel tool will generate breakthrough profiles and simulate performance across multiple PSA cycles. This can help researchers and students in the adsorption community understand the internal workings of commercial simulators and the role of numerical methods in process modelling.

If you use or adapt this Excel tool in your own work, please cite this dataset accordingly.
DOI: 10.17632/4pywst36cd.1
title: Pressure Swing Adsorption in Microsoft Excel – Basic Version (v1.0) - A learning tool for Chemical Engineering students

description: This Excel workbook was developed as part of the final year design project at the University of Surrey and is intended as an educational and illustrative tool for simulating Pressure Swing Adsorption (PSA) processes. The spreadsheets are self-explanatory and demonstrate how breakthrough curves and multi-cycle PSA simulations can be generated using fundamental mass transfer equations.

Please note that the data used in this tool are not experimentally obtained. Instead, key process parameters—including bed and adsorbent properties, flow rate, and isotherm characteristics—are assumed values, selected to illustrate the application of the method of lines for solving the mass balance equations commonly embedded in commercial simulation tools such as Aspen Adsorption.

For simplicity, the model assumes:

Axial dispersion

Linear adsorption isotherms

Plug flow dynamics

If users input the appropriate bed properties, adsorbent parameters, flow rate, and adsorption isotherm, the Excel tool will generate breakthrough profiles and simulate performance across multiple PSA cycles. This can help researchers and students in the adsorption community understand the internal workings of commercial simulators and the role of numerical methods in process modelling.

If you use or adapt this Excel tool in your own work, please cite this dataset accordingly.
DOI: 10.17632/z49y5sj4vh.2
title: Earthquake prediction model

description: Earthquake prediction modeling procedure over water wells monitoring datasets from the Jordan Rift Valley system and the Gilboa-Carmel fault system.