cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.18739/a25x25d26
title: Collaborative Research: Ice Core Studies Reconstructing Greenland Climate During the Eemian and Beyond

description: The primary goal of this collaborative project between three institutions is to understand the extent and evolution of the Greenland Ice Sheet (GrIS) during the Eemian period (roughly 130,000 to 115,000 years ago, the last major interglacial period in Earth's history) and the deglaciation immediately preceding it ("Termination 2"). The GrIS is an important agent influencing sea level, and Arctic and global climate, on multiple timescales. Its dynamics need to be understood in the context of past climate changes, but there is little information available about the footprint, volume, and elevation of the GrIS prior to the last ice age due to the absence of continuous ice core records prior to 123,000 years ago. During the Eemian, the GrIS was perhaps half its present size, contributing on the order of 3 m to "excess" sea level rise. Characterizing the evolution of the GrIS during glacial termination 2 and the Eemian would improve our understanding of its dynamics, and enhance our ability to make projections of sea level rise during the coming centuries. Older ice does exist at the bottoms of previously drilled ice cores, but the extraction of age and climate information from this older ice is hampered by the fact that it is stratigraphically disturbed and, in many cases, contaminated with soil or bedrock material. These investigators propose several novel methods to date this disturbed and/or "dirty" ice and to extract information on climate and ice sheet extent. The investigators will combine their new measurements and other available data to develop a more complete history of the GrIS during termination 2 and the Eemian. They will work with ice sheet modelers to investigate the constraints that the Eemian data provide for the models and improve their predictive capability. These efforts have the potential to improve our ability to predict the contribution of the GrIS to sea-level rise in the coming decades to centuries. Educational and outreach activities include the training of two graduate students, inclusion of this research in summer teacher enrichment programs, a lecture series for graduate students and postdocs, and communication of the results through the news media. PUBLICATIONS PRODUCED AS A RESULT OF THIS RESEARCH Blunier, T., M. L. Bender, B. Barnett, and J. C. Von Fisher. "Planetary fertility during the past 400 ka based on the triple isotope composition of O2 in trapped gases from the Vostok ice core," Climate of the Past, v.8, 2012, p. 1509. Rubino, M., D. M. Etheridge, C. M. Trudinger, C. E. Allison, M. O. Battle, R. L. Langenfelds, L. P. Steele, M. Curran, M. Bender, J. W. C. White, T. M. Jenk, T. Blunier, and R. J. Francey. "Rubino, M., D. M. Etheridge, C. M. Trudinger, C. E. Allison, M. O. Battle, R. L. Langenfelds, L. P. Steele, M. Curran, M. Bender, J. W. C. White, T. M. Jenk, T. Blunier, and R. J. Francey," Journal of Geophysical Research-Atmospheres, v.118, 2013, p. doi:10.10.
DOI: 10.18739/a2251fk78
title: Ice Core Studies Reconstructing Greenland Climate During the Eemian and Beyond

description: The primary goal of this collaborative project between three institutions is to understand the extent and evolution of the Greenland Ice Sheet (GrIS) during the Eemian period (roughly 130,000 to 115,000 years ago, the last major interglacial period in Earth's history) and the deglaciation immediately preceding it ("Termination 2"). The GrIS is an important agent influencing sea level, and Arctic and global climate, on multiple timescales. Its dynamics need to be understood in the context of past climate changes, but there is little information available about the footprint, volume, and elevation of the GrIS prior to the last ice age due to the absence of continuous ice core records prior to 123,000 years ago. During the Eemian, the GrIS was perhaps half its present size, contributing on the order of 3 m to "excess" sea level rise. Characterizing the evolution of the GrIS during glacial termination 2 and the Eemian would improve our understanding of its dynamics, and enhance our ability to make projections of sea level rise during the coming centuries. Older ice does exist at the bottoms of previously drilled ice cores, but the extraction of age and climate information from this older ice is hampered by the fact that it is stratigraphically disturbed and, in many cases, contaminated with soil or bedrock material. These investigators propose several novel methods to date this disturbed and/or "dirty" ice and to extract information on climate and ice sheet extent. The investigators will combine their new measurements and other available data to develop a more complete history of the GrIS during termination 2 and the Eemian. They will work with ice sheet modelers to investigate the constraints that the Eemian data provide for the models and improve their predictive capability. These efforts have the potential to improve our ability to predict the contribution of the GrIS to sea-level rise in the coming decades to centuries. Educational and outreach activities include the training of two graduate students, inclusion of this research in summer teacher enrichment programs, a lecture series for graduate students and postdocs, and communication of the results through the news media. PUBLICATIONS PRODUCED AS A RESULT OF THIS RESEARCH Blunier, T., M. L. Bender, B. Barnett, and J. C. Von Fisher. "Planetary fertility during the past 400 ka based on the triple isotope composition of O2 in trapped gases from the Vostok ice core," Climate of the Past, v.8, 2012, p. 1509. Rubino, M., D. M. Etheridge, C. M. Trudinger, C. E. Allison, M. O. Battle, R. L. Langenfelds, L. P. Steele, M. Curran, M. Bender, J. W. C. White, T. M. Jenk, T. Blunier, and R. J. Francey. "Rubino, M., D. M. Etheridge, C. M. Trudinger, C. E. Allison, M. O. Battle, R. L. Langenfelds, L. P. Steele, M. Curran, M. Bender, J. W. C. White, T. M. Jenk, T. Blunier, and R. J. Francey," Journal of Geophysical Research-Atmospheres, v.118, 2013, p. doi:10.10.
DOI: 10.18739/a2xd0qz1d
title: Studies Reconstructing Greenland Climate During the Eemian and Beyond

description: The primary goal of this collaborative project between three institutions is to understand the extent and evolution of the Greenland Ice Sheet (GrIS) during the Eemian period (roughly 130,000 to 115,000 years ago, the last major interglacial period in Earth's history) and the deglaciation immediately preceding it ("Termination 2"). The GrIS is an important agent influencing sea level, and Arctic and global climate, on multiple timescales. Its dynamics need to be understood in the context of past climate changes, but there is little information available about the footprint, volume, and elevation of the GrIS prior to the last ice age due to the absence of continuous ice core records prior to 123,000 years ago. During the Eemian, the GrIS was perhaps half its present size, contributing on the order of 3 m to "excess" sea level rise. Characterizing the evolution of the GrIS during glacial termination 2 and the Eemian would improve our understanding of its dynamics, and enhance our ability to make projections of sea level rise during the coming centuries. Older ice does exist at the bottoms of previously drilled ice cores, but the extraction of age and climate information from this older ice is hampered by the fact that it is stratigraphically disturbed and, in many cases, contaminated with soil or bedrock material. These investigators propose several novel methods to date this disturbed and/or "dirty" ice and to extract information on climate and ice sheet extent. The investigators will combine their new measurements and other available data to develop a more complete history of the GrIS during termination 2 and the Eemian. They will work with ice sheet modelers to investigate the constraints that the Eemian data provide for the models and improve their predictive capability. These efforts have the potential to improve our ability to predict the contribution of the GrIS to sea-level rise in the coming decades to centuries. Educational and outreach activities include the training of two graduate students, inclusion of this research in summer teacher enrichment programs, a lecture series for graduate students and postdocs, and communication of the results through the news media. PUBLICATIONS PRODUCED AS A RESULT OF THIS RESEARCH Blunier, T., M. L. Bender, B. Barnett, and J. C. Von Fisher. "Planetary fertility during the past 400 ka based on the triple isotope composition of O2 in trapped gases from the Vostok ice core," Climate of the Past, v.8, 2012, p. 1509. Rubino, M., D. M. Etheridge, C. M. Trudinger, C. E. Allison, M. O. Battle, R. L. Langenfelds, L. P. Steele, M. Curran, M. Bender, J. W. C. White, T. M. Jenk, T. Blunier, and R. J. Francey. "Rubino, M., D. M. Etheridge, C. M. Trudinger, C. E. Allison, M. O. Battle, R. L. Langenfelds, L. P. Steele, M. Curran, M. Bender, J. W. C. White, T. M. Jenk, T. Blunier, and R. J. Francey," Journal of Geophysical Research-Atmospheres, v.118, 2013, p. doi:10.10.
DOI: 10.18739/a2sn0147f
title: Photogrammetric scans of aerial photographs of North American glaciers, 1972. Roll 1 thumbnails

description: Introduction: 
 
 Between 1958 and 1999, Austin Post led the USGS collection of aerial imagery of North American glaciers. These images are primarily vertical stereo black and white images, although single oblique images, as well as color images have been collected. The glaciers of North America were the subjects, and the digital products made available here serve to document the changes that have occurred to the glaciers over the past 5 decades. The purpose of this project is to preserve the data contained within these film images in a digital format for future analysis of North American glacier change.
 
 File Layout: 
 
 
 1. 
 
 The first level contains an overall data set of image metadata from 1964 - 1997 (nagapData.csv) and an R script (searchData.R) with instructions on how to search and subset the data. fileLayout.pdf shows the file structure and folder contents visually. There are also three kml files with flight path information by decade. 
 
 2. 
 
 The second level is the year in which the pictures were taken. There are 32 years with images from 1964 – 1997. The majority of these folders are jpegs with notes provided by Austin Post. They also contain a year-specific csv (YYYY.csv) that contains image metadata for the entire year (date, roll numbers, location name, longitude, latitude, altitude, media, and comments). The overall data set (nagapData.csv) is the aggregate of each individual “YYYY.csv” file. 
 
 3. 
 
 The glacier photos are located at the third level (this level). The folders at this level are distinguished by camera roll number (1, 2, etc.), and image type (thumbnail, jpeg, or tif); some also contain fiducial and oblique image folders. This level primarily contains image files of aerial photos as either thumbnails, jpegs, or tifs. It also includes a csv with image metadata specific to each roll (date, roll numbers, location name, longitude, latitude, altitude, media, and comments), a text file (info.txt) with camera specifications unique to each image, and a text file (histo.txt or matchReport.txt) with color information and scanner specifications unique to each image.
DOI: 10.15468/dl.7earvc
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Geometry POLYGON ((38.83429 -4.875833, 38.83417 -4.875833, 38.83417 -4.876587, 38.83417 -4.876667, 38.83333 -4.876667, 38.83333 -4.8775, 38.83331 -4.8775, 38.8325 -4.8775, 38.8325 -4.878296, 38.8325 -4.878333, 38.83087 -4.878333, 38.83083 -4.878333, 38.83083 -4.879089, 38.83083 -4.879167, 38.83008 -4.879167, 38.83 -4.879167, 38.83 -4.88, 38.82917 -4.88, 38.82917 -4.880798, 38.82917 -4.880833, 38.82833 -4.880833, 38.82833 -4.8825, 38.8275 -4.8825, 38.8275 -4.885, 38.82667 -4.885, 38.82667 -4.8875, 38.82583 -4.8875, 38.82583 -4.89, 38.825 -4.89, 38.825 -4.893333, 38.82417 -4.893333, 38.82417 -4.8975, 38.82333 -4.8975, 38.82333 -4.898333, 38.82417 -4.898333, 38.82417 -4.900833, 38.825 -4.900833, 38.825 -4.903333, 38.82583 -4.903333, 38.82583 -4.904167, 38.82667 -4.904167, 38.82667 -4.905, 38.8275 -4.905, 38.8275 -4.905833, 38.82833 -4.905833, 38.82833 -4.906667, 38.83 -4.906667, 38.83 -4.9075, 38.83083 -4.9075, 38.83083 -4.908333, 38.83167 -4.908333, 38.83167 -4.909167, 38.8325 -4.909167, 38.8325 -4.91, 38.83417 -4.91, 38.83417 -4.910833, 38.85917 -4.910833, 38.85917 -4.91, 38.86083 -4.91, 38.86083 -4.909167, 38.8625 -4.909167, 38.8625 -4.908333, 38.865 -4.908333, 38.865 -4.9075, 38.86667 -4.9075, 38.86667 -4.906667, 38.8675 -4.906667, 38.8675 -4.905833, 38.86833 -4.905833, 38.86833 -4.904167, 38.86917 -4.904167, 38.86917 -4.903333, 38.87 -4.903333, 38.87 -4.901667, 38.87083 -4.901667, 38.87083 -4.900833, 38.87167 -4.900833, 38.87167 -4.893333, 38.87167 -4.890833, 38.87083 -4.890833, 38.87083 -4.888333, 38.87 -4.888333, 38.87 -4.886667, 38.86917 -4.886667, 38.86917 -4.886597, 38.86917 -4.885, 38.86833 -4.885, 38.86833 -4.884167, 38.86829 -4.884167, 38.8675 -4.884167, 38.8675 -4.884094, 38.8675 -4.883333, 38.86749 -4.883333, 38.86667 -4.883333, 38.86667 -4.882507, 38.86667 -4.8825, 38.86511 -4.8825, 38.865 -4.8825, 38.865 -4.881667, 38.86333 -4.881667, 38.86333 -4.881592, 38.86333 -4.880833, 38.86328 -4.880833, 38.86167 -4.880833, 38.86167 -4.880005, 38.86167 -4.88, 38.85931 -4.88, 38.85917 -4.88, 38.85917 -4.879167, 38.8575 -4.879167, 38.8575 -4.879089, 38.8575 -4.878333, 38.85748 -4.878333, 38.85583 -4.878333, 38.85583 -4.877502, 38.85583 -4.8775, 38.85431 -4.8775, 38.85417 -4.8775, 38.85417 -4.876667, 38.83917 -4.876667, 38.83917 -4.875833, 38.83429 -4.875833))",
 "TaxonKey is Mammalia"
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0027727-241107131044228/datasets/export for details.
DOI: 10.18739/a2j678x3q
title: Photogrammetric scans of aerial photographs of North American glaciers, 1972. Roll 1 tiffs

description: Introduction: 
 
 Between 1958 and 1999, Austin Post led the USGS collection of aerial imagery of North American glaciers. These images are primarily vertical stereo black and white images, although single oblique images, as well as color images have been collected. The glaciers of North America were the subjects, and the digital products made available here serve to document the changes that have occurred to the glaciers over the past 5 decades. The purpose of this project is to preserve the data contained within these film images in a digital format for future analysis of North American glacier change.
 
 File Layout: 
 
 
 1. 
 
 The first level contains an overall data set of image metadata from 1964 - 1997 (nagapData.csv) and an R script (searchData.R) with instructions on how to search and subset the data. fileLayout.pdf shows the file structure and folder contents visually. There are also three kml files with flight path information by decade. 
 
 2. 
 
 The second level is the year in which the pictures were taken. There are 32 years with images from 1964 – 1997. The majority of these folders are jpegs with notes provided by Austin Post. They also contain a year-specific csv (YYYY.csv) that contains image metadata for the entire year (date, roll numbers, location name, longitude, latitude, altitude, media, and comments). The overall data set (nagapData.csv) is the aggregate of each individual “YYYY.csv” file. 
 
 3. 
 
 The glacier photos are located at the third level (this level). The folders at this level are distinguished by camera roll number (1, 2, etc.), and image type (thumbnail, jpeg, or tif); some also contain fiducial and oblique image folders. This level primarily contains image files of aerial photos as either thumbnails, jpegs, or tifs. It also includes a csv with image metadata specific to each roll (date, roll numbers, location name, longitude, latitude, altitude, media, and comments), a text file (info.txt) with camera specifications unique to each image, and a text file (histo.txt or matchReport.txt) with color information and scanner specifications unique to each image.
DOI: 10.18739/a2nv99b47
title: Photogrammetric scans of aerial photographs of North American glaciers, 1972. Roll 1 jpegs

description: Introduction: 
 
 Between 1958 and 1999, Austin Post led the USGS collection of aerial imagery of North American glaciers. These images are primarily vertical stereo black and white images, although single oblique images, as well as color images have been collected. The glaciers of North America were the subjects, and the digital products made available here serve to document the changes that have occurred to the glaciers over the past 5 decades. The purpose of this project is to preserve the data contained within these film images in a digital format for future analysis of North American glacier change.
 
 File Layout: 
 
 
 1. 
 
 The first level contains an overall data set of image metadata from 1964 - 1997 (nagapData.csv) and an R script (searchData.R) with instructions on how to search and subset the data. fileLayout.pdf shows the file structure and folder contents visually. There are also three kml files with flight path information by decade. 
 
 2. 
 
 The second level is the year in which the pictures were taken. There are 32 years with images from 1964 – 1997. The majority of these folders are jpegs with notes provided by Austin Post. They also contain a year-specific csv (YYYY.csv) that contains image metadata for the entire year (date, roll numbers, location name, longitude, latitude, altitude, media, and comments). The overall data set (nagapData.csv) is the aggregate of each individual “YYYY.csv” file. 
 
 3. 
 
 The glacier photos are located at the third level (this level). The folders at this level are distinguished by camera roll number (1, 2, etc.), and image type (thumbnail, jpeg, or tif); some also contain fiducial and oblique image folders. This level primarily contains image files of aerial photos as either thumbnails, jpegs, or tifs. It also includes a csv with image metadata specific to each roll (date, roll numbers, location name, longitude, latitude, altitude, media, and comments), a text file (info.txt) with camera specifications unique to each image, and a text file (histo.txt or matchReport.txt) with color information and scanner specifications unique to each image.
DOI: 10.18739/a28p5v96q
title: Plot Normalized Difference Vegetation Index (NDVI) from International Polar Year (IPY) International Tundra Experiment (ITEX) Cross Site Comparison

description: Study sites: Toolik Lake Field Station Alaska, USA 68.63 N, 149.57 W; Atqasuk, Alaska USA 70.45 N, 157.40 W; Barrow, Alaska, USA 71.30 N, 156.67 W; Latnjajaure, Sweden 68.35 N, 18.50 E; Falls Creek, Australia: Site 2-unburned 36.90 S 147.29 E; Site 3-burned 36.89 S 147.28 E. Additional sites will be added summer 2008, but the exact sites are not finalized. Purpose: Document plot Normalized Difference Vegetation Index (NDVI) for comparison of warming treatments using International Tundra Experiment (ITEX) open top chamber (OTC), for correlation with visual observation of plant phenology, and for comparison to historical phenology (1995-2002). Treatments: control and ITEX OTC warming experiment (1994-2007). Design: 5 replicates of each treatment at dry site and moist site. Sampling frequency: Once per peak season.
DOI: 10.18739/a24x54h2z
title: 14C of soil CO2 from International Polar Year (IPY) International Tundra Experiment (ITEX) Cross Site Comparison

description: Study sites: Toolik Lake Field Station Alaska, USA 68.63 N, 149.57 W; Atqasuk, Alaska USA 70.45 N, 157.40 W; Barrow, Alaska, USA 71.30 N, 156.67 W; Latnjajaure, Sweden 68.35 N, 18.50 E; Falls Creek, Australia: Site 2-unburned 36.90 S 147.29 E; Site 3-burned 36.89 S 147.28 E. Additional sites will be added summer 2008, but the exact sites are not finalized. Purpose: Collect soil carbon dioxide (CO2) for analysis of radiocarbon to evaluate the age of the carbon respired in controls and warmed plots from across the International Tundra Experiment (ITEX) network. Treatments: control and ITEX Open Top Chamber (OTC) warming experiment (1994-2007). Design: 5 replicates of each treatment at dry site and moist site. Sampling frequency: Once per peak season.
DOI: 10.18739/a2154dp71
title: Global Tundra Vegetation Change - 30 years of plant abundance data from unmanipulated and experimentally-warmed plots

description: These data were collected in conjunction with two International Polar Year (IPY) synthesis projects, looking at 1. Vegetation responses to warming in sites worldwide and 2. Long-term changes in unmanipulated control plots. As there is substantial overlap in the datasets used for the two projects (i.e. control plots from warming experiments often also provided a record of long-term change under ambient conditions), we have opted to archive the data from both projects together. We amassed plot-based data on vegetation abundance (cover, point-frame hits, biomass, subplot frequency, stem-counts) from permanently marked plots, transects, and study areas throughout the tundra biome, and in and out of warming experiments. Criteria for inclusion in the warming treatment analysis were measures of plant abundance in warmed and control plots in at least one year. For the long-term change project, criteria for inclusion were repeat-measurements of plant abundance in unmanipulated vegetation using the same techniques in 2+ study years at least 5 years apart in time. We also collected air and soil temperature data (where available) from the study site locations. This data set is available in the Polar Data Catalog with Canadian Cryospheric Information Network (CCIN) reference number 10786.
DOI: 10.15468/dl.t8y9nh
title: Occurrence Download

description: A dataset containing 19 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasGeospatialIssue is false",
 "HasCoordinate is true",
 "OccurrenceStatus is Present",
 {
 "not" : {
 "BasisOfRecord" : [
 "is one of (Fossil, Living Specimen)"
 ]
 }
 },
 "TaxonKey is one of (Nannoglottis delavayi (Franch.) Y.Ling & Y.L.Chen)"
 ]
}

 The dataset includes 19 records from 5 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0027728-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.18739/a2wd3q222
title: Leaf CNP and isotopes 13C 15N and 18O from International Tundra Experiment (ITEX) Cross Site Comparison

description: Study sites: Toolik Lake Field Station Alaska, USA 68.63 N, 149.57 W; Atqasuk, Alaska USA 70.45 N, 157.40 W; Barrow, Alaska, USA 71.30 N, 156.67 W; Latnjajaure, Sweden 68.35 N, 18.50 E; Falls Creek, Australia: Site 2-unburned 36.90 S 147.29 E; Site 3-burned 36.89 S 147.28 E. Additional sites will be added summer 2008, but the exact sites are not finalized. Purpose: Collect leaf and soil material to evaluate ecosystem, nutrient cycling change effects of long term warming from across the International Tundra Experiment (ITEX) network. Treatments: control and ITEX open-top chamber (OTC) warming experiment. Design: 5 replicates of each treatment at dry site and moist site. Sampling frequency: Once per peak season.