cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.904233
title: Hyperiid amphipod distribution across the zonal gradient of the sub-tropical Southeast Pacific

description: Abundance standarized in individuals per m-3 and spatial distribution of hyperiid amphipods found in the Southeast Pacific during the CIMAR_ 21 Oceanic Island cruise in 2015, covering a subtropical productivity gradient from the highly productive coastal upwelling zone off Chile towards the oligotrophic waters around Easter Island.
description: Supplement to: Espinosa-Leal, Liliana; Escribano, Rubén; Riquelme-Bugueño, Ramiro; Corredor-Acosta, Andrea (2021): Distribution and biodiversity patterns of hyperiid amphipods across the coastal-offshore gradient of the sub-tropical Southeast Pacific. Marine Biodiversity, 51(1), 13
DOI: 10.1594/pangaea.912259
title: [NOTE, THIS IS A TEST DATASET – DO NOT USE] Multibeam bathymetry processed data (Kongsberg EM122 working area dataset) of RV METEOR during cruise M127, Fictional Bank canyon, North Atlantic Ocean

description: test
description: this is a test dataset
DOI: 10.1594/pangaea.914160
title: Seabed images taken at Site PS82/109-1 deployment during POLARSTERN cruise PS82
DOI: 10.1594/pangaea.914162
title: Seabed images taken at Site PS82/125-1 deployment during POLARSTERN cruise PS82
DOI: 10.1594/pangaea.914156
title: Seabed images taken at Site PS82/074-1 deployment during POLARSTERN cruise PS82
DOI: 10.1594/pangaea.914174
title: Seabed images taken at Site PS82/242-1 deployment during POLARSTERN cruise PS82
DOI: 10.1594/pangaea.915454
title: Age model of IODP Site 339-U1391
DOI: 10.1594/pangaea.915455
title: Anisotropy of magnetic susceptibility of IODP Site 339-U1391
DOI: 10.1594/pangaea.912021
title: Special sea ice observations aboard Akademik Fedorov MOSAiC leg 1, 2019-09-25 to 2019-10-20

description: Sea ice observations were routinely conducted by the Arctic and Antarctic Research Institute (AARI) group aboard AARI research vessel "Akademik Fedorov" during MOSAiC leg1 compaign, 25 September - 20 October 2019. Observations were conducted in accordance with AARI methodology. Special feature of the methodology is continuous estimation of sea ice parameters both along the track of navigation “on the route” (within the area around the ship of 2-3 widths of the hull) and “in the region” (within the range of eye visibility), with separation of recording into the zones with homogeneous ice characteristics [Manual on conduction of ice air reconnaissance / Rukovodstvo po proizvodstvu ledovoi aviarazvedki, 1981]. Observations were recorded in a form of an electronic log-book in accordance with the WMO Sea Ice Nomenclature (WMO-No.259) and WMO SIGRID-3 exchange format (SIGRID-3: A vector archive format for Sea Ice Georeferenced Information and Data - JCOMM TR-23, 2014).Column names, where applicable, correspond to SIGRID-3 naming convention for sea ice polygone field names (Tables A-2, B-2, B-3, C-2). Codes for the forms of ice fully correspond to SIGRID-3 "Table 3: Form of ice codes for variable identifiers FA, FB, FC, FP and FS".
DOI: 10.1594/pangaea.915458
title: x-ray fluorescence analysis of IODP Site 339-U1391
DOI: 10.1594/pangaea.915457
title: Physical grain size of IODP Site 339-U1391
DOI: 10.1594/pangaea.911385
title: Improved global maps of the optimum growth temperature, maximum light use efficiency and gross primary production for vegetation

description: Light use efficiency models are commonly applied to simulate global terrestrial gross primary production (GPP)- carbon uptake by terrestrial vegetation through photosynthesis. However, some key parameters within this model, including the optimum growth temperature for vegetation (T_opt) and the maximum light use efficiency (ε_max), which represents the potential light energy conversion ability for plants without heat or water stresses, remain rather uncertain. In this study, we spatially mapped these two parameters at the global scale. The methods can be divided into four steps. First, the existing LUE equations are compared and adjusted to devise an optimized LUE model (the prerequisite of T_opt and ε_max mapping). Second, the T_opt values at 115 flux sites are fitted under the optimized LUE model and then extrapolated to the global scale by exploring the relationship between T_opt and local climate conditions as well as vegetation composition. Third, by integrating the slope of the regression between SIF and the simulated GPP with ε_max=1 and the extrapolated map of the regression coefficient between SIF and actual GPP, ε_max values are estimated at the global scale. Finally, we calculated global GPP during 2001~2016 based on the revised LUE model and with the T_opt and ε_max maps incorporated. The resulting maps can indicate the strong interaction between plants and the living environment, while the global GPP simulation accuracy can be improved significantly by incorporating the maps of T_opt and ε_max (R2 =0.83, RMSE =1.38 g C m-2 d-1 against flux observations)). Upon analysis, we distinguished a faster GPP rising rate and a stronger positive impact of human activities on global GPP during 2001~2016 than most previous studies.
DOI: 10.1594/pangaea.912129
title: Recalibrated age model and sea surface temperatures of sediment core MD97-2121
DOI: 10.1594/pangaea.912366
title: [NOTE, THIS IS A TEST DATASET – DO NOT USE] Multibeam bathymetry raw data (Kongsberg EM122 working area dataset) of RV METEOR during cruise M127, Fictional Bank canyon, North Atlantic Ocean

description: test
description: this is a test dataset
DOI: 10.1594/pangaea.912137
title: Recalibrated age model and sea surface temperatures of sediment core TN057-21
DOI: 10.1594/pangaea.912132
title: Recalibrated age model and sea surface temperatures of sediment core TN057-6-PC4
DOI: 10.1594/pangaea.909429
title: Navigation track of Akademik Fedorov during pre-MOSAiC project phase with 1 minute interval for 21 September - 25 October 2019

description: Data contains recorded navigation track (geographical coordinates, time) and machine calculated course and speed of the Arctic and Antarctic Research Institute (AARI) research vessel Akademik Fedorov with 1 minute interval in CSV and shapefile formats for 21 September - 25 October 2019 (pre-MOSAiC phase). Coordinates are based on GPS positions of the vessels recorded continuously on the bridge by the DKart Navigator ECDIS. Navigation area - through the northern parts of Barents Sea, Kara Sea towards the initial area of the MOSAiC distributed network (DN) and Polarstern icebreaker central floe in the Arctic Basin (app 85N, 130E) and back. There is a couple of insignificant gaps in the row. Data are in compressed form as a single archive.
DOI: 10.1594/pangaea.926901
title: Stable oxygen isotope ratios of Globigerina bulloides of sediment core KET82-21

description: Stable oxygen isotope measurements were performed on cores RECORD23, MD90-912 and KET82-21, on 10-20 hand-picked and well-preserved (clean and intact) specimens of the planktonic foraminifera G. bulloides (fraction 250-315 µm). Samples were analysed at the State Key Laboratory of Marine Geology (Tongji University) using a Finnigan MAT-253 mass spectrometer (Cheng et al., 2005). Shell oxygen isotope values are expressed in conventional delta notation () relative to the isotopic ratio of the carbon dioxide gas derived from the Vienna Pee Dee Belemnite (VPDB) standard. Ratios are reported in ‰. VPDB is defined with respect to the NBS 19 (δ18O of -2.20 ‰ VPDB), limestone standard. The mean external reproducibility was checked by replicate analyses of laboratory standards and is better than ±0.14‰ (±2σ) for δ18O.
DOI: 10.1594/pangaea.926903
title: Stable oxygen isotope ratios of Globigerina bulloides of sediment core RECORD23

description: Stable oxygen isotope measurements were performed on cores RECORD23, MD90-912 and KET82-21, on 10-20 hand-picked and well-preserved (clean and intact) specimens of the planktonic foraminifera G. bulloides (fraction 250-315 µm). Samples were analysed at the State Key Laboratory of Marine Geology (Tongji University) using a Finnigan MAT-253 mass spectrometer (Cheng et al., 2005). Shell oxygen isotope values are expressed in conventional delta notation () relative to the isotopic ratio of the carbon dioxide gas derived from the Vienna Pee Dee Belemnite (VPDB) standard. Ratios are reported in ‰. VPDB is defined with respect to the NBS 19 (δ18O of -2.20 ‰ VPDB), limestone standard. The mean external reproducibility was checked by replicate analyses of laboratory standards and is better than ±0.14‰ (±2σ) for δ18O.
DOI: 10.1594/pangaea.926905
title: Nd isotope composition obtained on mixed planktonic foraminifera samples from core KET82-21

description: Neodymium isotopes were measured on mixed planktonic foraminifera from the washed &gt;150 µm size fraction of the samples. The foraminifera tests were crushed between two glass slides to open chambers and fragments were ultrasonicated for 1 min in MilliQ water before pipetting out the suspended particles to separate the waste. This step was repeated until the water became clear and free of clay. Samples were checked under a binocular microscope to ensure that all sediment particles were removed, before they underwent a weak acid leaching for 5 min in 1 ml 0.001 M HNO3 with ultrasonication. After the cleaning step, samples were transferred into a 1.5 ml tube, soaked in 0.5 ml MilliQ water and dissolved using stepwise 100 µl 0.5 M HNO3 until the dissolution reaction stopped. The dissolved samples were centrifuged, and the supernatant was immediately transferred to Teflon beakers to prevent the leaching of any possible remaining phases. The solutions were then dried using a hotplate for Nd purification.Neodymium was purified using Eichrom TRU-Spec and Ln-Spec resins, following the analytical procedure described in Copard et al. (2010). The 143Nd/144Nd ratios were measured using the ThermoScientific NeptunePlus Multi-Collector Inductively Coupled Plasma Mass Spectrometer (MC-ICP-MS), hosted at LSCE. For the Nd isotope analyses, sample and standard concentrations were matched at 10 ppb. Mass-dependent fractionation was corrected by normalizing 146Nd/144Nd to 0.7219 and applying an exponential fractionation law. During the analytical sessions, every set of two samples was bracketed by analyses of the La Jolla Nd standard solution, which is characterized by certified values of 0.511858±0.000007. The offset value between the results and the certified values of La Jolla was less than 0.4 epsilon units for all of the analyses presented in this study. The analytical errors reported herein correspond to the external two-sigma standard deviation (based on repeated analyses of the La Jolla standard for the different analytical sessions). The obtained analytical errors ranged from 0.1 to 0.6 epsilon units. The analytical blank values for Nd obtained for the full procedure were &lt;4 pg, which represents less than 0.1% of the minimum Nd yield from foraminifera (around 4 ng) used in this study. As a result, no blank correction was applied.
DOI: 10.1594/pangaea.912123
title: Recalibrated age model and sea surface temperatures of sediment core MD94-103
DOI: 10.1594/pangaea.926906
title: Nd isotope composition obtained on mixed planktonic foraminifera samples from core MD01-2472

description: Neodymium isotopes were measured on mixed planktonic foraminifera from the washed &gt;150 µm size fraction of the samples. The foraminifera tests were crushed between two glass slides to open chambers and fragments were ultrasonicated for 1 min in MilliQ water before pipetting out the suspended particles to separate the waste. This step was repeated until the water became clear and free of clay. Samples were checked under a binocular microscope to ensure that all sediment particles were removed, before they underwent a weak acid leaching for 5 min in 1 ml 0.001 M HNO3 with ultrasonication. After the cleaning step, samples were transferred into a 1.5 ml tube, soaked in 0.5 ml MilliQ water and dissolved using stepwise 100 µl 0.5 M HNO3 until the dissolution reaction stopped. The dissolved samples were centrifuged, and the supernatant was immediately transferred to Teflon beakers to prevent the leaching of any possible remaining phases. The solutions were then dried using a hotplate for Nd purification.Neodymium was purified using Eichrom TRU-Spec and Ln-Spec resins, following the analytical procedure described in Copard et al. (2010). The 143Nd/144Nd ratios were measured using the ThermoScientific NeptunePlus Multi-Collector Inductively Coupled Plasma Mass Spectrometer (MC-ICP-MS), hosted at LSCE. For the Nd isotope analyses, sample and standard concentrations were matched at 10 ppb. Mass-dependent fractionation was corrected by normalizing 146Nd/144Nd to 0.7219 and applying an exponential fractionation law. During the analytical sessions, every set of two samples was bracketed by analyses of the La Jolla Nd standard solution, which is characterized by certified values of 0.511858±0.000007. The offset value between the results and the certified values of La Jolla was less than 0.4 epsilon units for all of the analyses presented in this study. The analytical errors reported herein correspond to the external two-sigma standard deviation (based on repeated analyses of the La Jolla standard for the different analytical sessions). The obtained analytical errors ranged from 0.1 to 0.6 epsilon units. The analytical blank values for Nd obtained for the full procedure were &lt;4 pg, which represents less than 0.1% of the minimum Nd yield from foraminifera (around 4 ng) used in this study. As a result, no blank correction was applied.
DOI: 10.1594/pangaea.926908
title: Nd isotope composition obtained on mixed planktonic foraminifera samples from core MD90-917

description: Neodymium isotopes were measured on mixed planktonic foraminifera from the washed &gt;150 µm size fraction of the samples. The foraminifera tests were crushed between two glass slides to open chambers and fragments were ultrasonicated for 1 min in MilliQ water before pipetting out the suspended particles to separate the waste. This step was repeated until the water became clear and free of clay. Samples were checked under a binocular microscope to ensure that all sediment particles were removed, before they underwent a weak acid leaching for 5 min in 1 ml 0.001 M HNO3 with ultrasonication. After the cleaning step, samples were transferred into a 1.5 ml tube, soaked in 0.5 ml MilliQ water and dissolved using stepwise 100 µl 0.5 M HNO3 until the dissolution reaction stopped. The dissolved samples were centrifuged, and the supernatant was immediately transferred to Teflon beakers to prevent the leaching of any possible remaining phases. The solutions were then dried using a hotplate for Nd purification.Neodymium was purified using Eichrom TRU-Spec and Ln-Spec resins, following the analytical procedure described in Copard et al. (2010). The 143Nd/144Nd ratios were measured using the ThermoScientific NeptunePlus Multi-Collector Inductively Coupled Plasma Mass Spectrometer (MC-ICP-MS), hosted at LSCE. For the Nd isotope analyses, sample and standard concentrations were matched at 10 ppb. Mass-dependent fractionation was corrected by normalizing 146Nd/144Nd to 0.7219 and applying an exponential fractionation law. During the analytical sessions, every set of two samples was bracketed by analyses of the La Jolla Nd standard solution, which is characterized by certified values of 0.511858±0.000007. The offset value between the results and the certified values of La Jolla was less than 0.4 epsilon units for all of the analyses presented in this study. The analytical errors reported herein correspond to the external two-sigma standard deviation (based on repeated analyses of the La Jolla standard for the different analytical sessions). The obtained analytical errors ranged from 0.1 to 0.6 epsilon units. The analytical blank values for Nd obtained for the full procedure were &lt;4 pg, which represents less than 0.1% of the minimum Nd yield from foraminifera (around 4 ng) used in this study. As a result, no blank correction was applied.
DOI: 10.1594/pangaea.912134
title: Recalibrated age model and sea surface temperatures of ODP Site 202-1233
DOI: 10.1594/pangaea.912128
title: Recalibrated age model and sea surface temperatures from alkenone measurements of sediment core MD97-2120
DOI: 10.1594/pangaea.912136
title: Recalibrated age model and sea surface temperatures of sediment core SO136_111GC-12
DOI: 10.1594/pangaea.926907
title: Nd isotope composition obtained on mixed planktonic foraminifera samples from core MD90-912

description: Neodymium isotopes were measured on mixed planktonic foraminifera from the washed &gt;150 µm size fraction of the samples. The foraminifera tests were crushed between two glass slides to open chambers and fragments were ultrasonicated for 1 min in MilliQ water before pipetting out the suspended particles to separate the waste. This step was repeated until the water became clear and free of clay. Samples were checked under a binocular microscope to ensure that all sediment particles were removed, before they underwent a weak acid leaching for 5 min in 1 ml 0.001 M HNO3 with ultrasonication. After the cleaning step, samples were transferred into a 1.5 ml tube, soaked in 0.5 ml MilliQ water and dissolved using stepwise 100 µl 0.5 M HNO3 until the dissolution reaction stopped. The dissolved samples were centrifuged, and the supernatant was immediately transferred to Teflon beakers to prevent the leaching of any possible remaining phases. The solutions were then dried using a hotplate for Nd purification.Neodymium was purified using Eichrom TRU-Spec and Ln-Spec resins, following the analytical procedure described in Copard et al. (2010). The 143Nd/144Nd ratios were measured using the ThermoScientific NeptunePlus Multi-Collector Inductively Coupled Plasma Mass Spectrometer (MC-ICP-MS), hosted at LSCE. For the Nd isotope analyses, sample and standard concentrations were matched at 10 ppb. Mass-dependent fractionation was corrected by normalizing 146Nd/144Nd to 0.7219 and applying an exponential fractionation law. During the analytical sessions, every set of two samples was bracketed by analyses of the La Jolla Nd standard solution, which is characterized by certified values of 0.511858±0.000007. The offset value between the results and the certified values of La Jolla was less than 0.4 epsilon units for all of the analyses presented in this study. The analytical errors reported herein correspond to the external two-sigma standard deviation (based on repeated analyses of the La Jolla standard for the different analytical sessions). The obtained analytical errors ranged from 0.1 to 0.6 epsilon units. The analytical blank values for Nd obtained for the full procedure were &lt;4 pg, which represents less than 0.1% of the minimum Nd yield from foraminifera (around 4 ng) used in this study. As a result, no blank correction was applied.
DOI: 10.1594/pangaea.926909
title: Nd isotope composition obtained on mixed planktonic foraminifera samples from core RECORD23

description: Neodymium isotopes were measured on mixed planktonic foraminifera from the washed &gt;150 µm size fraction of the samples. The foraminifera tests were crushed between two glass slides to open chambers and fragments were ultrasonicated for 1 min in MilliQ water before pipetting out the suspended particles to separate the waste. This step was repeated until the water became clear and free of clay. Samples were checked under a binocular microscope to ensure that all sediment particles were removed, before they underwent a weak acid leaching for 5 min in 1 ml 0.001 M HNO3 with ultrasonication. After the cleaning step, samples were transferred into a 1.5 ml tube, soaked in 0.5 ml MilliQ water and dissolved using stepwise 100 µl 0.5 M HNO3 until the dissolution reaction stopped. The dissolved samples were centrifuged, and the supernatant was immediately transferred to Teflon beakers to prevent the leaching of any possible remaining phases. The solutions were then dried using a hotplate for Nd purification.Neodymium was purified using Eichrom TRU-Spec and Ln-Spec resins, following the analytical procedure described in Copard et al. (2010). The 143Nd/144Nd ratios were measured using the ThermoScientific NeptunePlus Multi-Collector Inductively Coupled Plasma Mass Spectrometer (MC-ICP-MS), hosted at LSCE. For the Nd isotope analyses, sample and standard concentrations were matched at 10 ppb. Mass-dependent fractionation was corrected by normalizing 146Nd/144Nd to 0.7219 and applying an exponential fractionation law. During the analytical sessions, every set of two samples was bracketed by analyses of the La Jolla Nd standard solution, which is characterized by certified values of 0.511858±0.000007. The offset value between the results and the certified values of La Jolla was less than 0.4 epsilon units for all of the analyses presented in this study. The analytical errors reported herein correspond to the external two-sigma standard deviation (based on repeated analyses of the La Jolla standard for the different analytical sessions). The obtained analytical errors ranged from 0.1 to 0.6 epsilon units. The analytical blank values for Nd obtained for the full procedure were &lt;4 pg, which represents less than 0.1% of the minimum Nd yield from foraminifera (around 4 ng) used in this study. As a result, no blank correction was applied.
DOI: 10.1594/pangaea.926902
title: Stable oxygen isotope ratios of Globigerina bulloides of sediment core MD90-912

description: Stable oxygen isotope measurements were performed on cores RECORD23, MD90-912 and KET82-21, on 10-20 hand-picked and well-preserved (clean and intact) specimens of the planktonic foraminifera G. bulloides (fraction 250-315 µm). Samples were analysed at the State Key Laboratory of Marine Geology (Tongji University) using a Finnigan MAT-253 mass spectrometer (Cheng et al., 2005). Shell oxygen isotope values are expressed in conventional delta notation () relative to the isotopic ratio of the carbon dioxide gas derived from the Vienna Pee Dee Belemnite (VPDB) standard. Ratios are reported in ‰. VPDB is defined with respect to the NBS 19 (δ18O of -2.20 ‰ VPDB), limestone standard. The mean external reproducibility was checked by replicate analyses of laboratory standards and is better than ±0.14‰ (±2σ) for δ18O.
DOI: 10.1594/pangaea.915046
title: IP25 and highly branched isoprenoids of sediment core ARA04C/37, Beaufort Sea, Arctic Ocean915044
DOI: 10.1594/pangaea.892682
title: Monthly entomological inoculation rates for studying malaria transmission seasonality in Africa

description: A comprehensive literature review is conducted to create a new database of malaria Entomological Inoculation Rates (EIR), a metric of malaria transmission intensity. All field studies include data at a monthly temporal resolution and a duration of at least one year in order to be able to study seasonality variability in transmission. Care is taken to ensure the data collection methodologies adhere to a specific standard and that the location and timing of the measurements are well documented. Auxiliary information on the population and hydrological setting are included. The database includes measurements that cover Sub-Saharan Africa spanning from 1968 to 2013, thus also facilitating analysis of interannual transmission variability over broad regions.
DOI: 10.1594/pangaea.894461
title: Burned Areas Detection in the Brazilian Amazon based on Spectral Indices and GEOBIA - datafiles
DOI: 10.1594/pangaea.894785
title: Annual record of black carbon (rBC), bismuth, lead and others from 1741 to 2015 AD from Colle Gnifetti ice core (Swiss/Italian Alps)
DOI: 10.1594/pangaea.894787
title: Record of black carbon (rBC), bismuth, lead and others from 1741 to 2015 AD from Colle Gnifetti ice cores GC15 and GC03B (Swiss/Italian Alps)