Find research datasets worth reusing

opencc-by-4.0Aug 2023View details →

Hydrogen partitioning between stishovite and hydrous phase δ: Implications for water cycle and distribution in the lower mantle

FTIR data (wav number vs absorption coefficient) for starting stishovite crystals and crystals after annealing.

opencc-by-4.0Aug 2023View details →

Supplementary material for "Filter-feeding gelatinous macrozooplankton response to climate change and implications for benthic food supply and global carbon cycle"

Simulation Outputs Description --------------------------- This text file outlines the contents of the simulation outputs utilized in the analysis presented in Clerc et al. (2023). Pre-treated outputs are not provided for storage reasons, but the complete output can be made available upon request. Spatial files are regridded to a 1-degree resolution regular grid using the treatment: cdo remapdis,r360x180 in.nc out.nc. Folder Names: -------------- Here is a brief overview of the content within each folder. - TS_PICONTROL: Globally averaged time series for the PI-control runs spanning 1850-2100. (Units: PgC, or PgC/yr for "fluxes" filenames.) - TS_RCP85: Globally averaged time series for the RCP8.5 runs spanning 1850-2100. (Units: PgC, or PgC/yr for "fluxes" filenames.) - TS_RCP26: Globally averaged time series for the RCP2.6 runs spanning 1850-2100. (Units: PgC, or PgC/yr for "fluxes" filenames.) - EXPORT_LAYERS_PICONTROL: Time-averaged Pi-control flux outputs at specified depth horizons over the indicated period. (Regular 360x180 grid; Units: gC/m2/yr.) - EXPORT_LAYERS_RCP85: Time-averaged RCP8.5 flux outputs at specified depth horizons over the indicated period. (Regular 360x180 grid; Units: gC/m2/yr.) - EXPORT_LAYERS_RCP26: Time-averaged RCP2.6 flux outputs at specified depth horizons over the indicated period. (Regular 360x180 grid; Units: gC/m2/yr.) - SURFACE_LAYERS_RCP85: Vertically integrated (0-300m) time-averaged RCP8.5 outputs over the specified period. (Regular 360x180 grid; Units: mmolC/m3.) - SURFACE_LAYERS_RCP26: Vertically integrated (0-300m) time-averaged RCP2.6 outputs over the specified period. (Regular 360x180 grid; Units: mmolC/m3.) - SURFACE_LAYERS_PICONTROL: Vertically integrated (0-300m) time-averaged PiControl outputs over the specified period. (Regular 360x180 grid; Units: mmolC/m3.) - CHLOROPHYLL: Surface chlorophyll on a 360x180 degree grid, time-averaged over the indicated period. (Units: mg Chl/m3.) - TS_BIOME: Biome-specific averaged time series spanning 1850-2100. (Units: PgC, or PgC/yr for "fluxes" filenames.) - TS_CFLX: Globally averaged carbon uptake time series spanning 1850-2100. (Units: PgC/yr.) - BIOMES: Biome masks on a regular 360x180 grid. Filename Conventions: ----------------------- Please refer to the following conventions for filenames. MODEL: - PISCES-FFGM: SLP - PISCES-v2: STD - PISCES-GM: MAC FORCING: - Pi-control: PI - Climate-change scenario: AD PERIOD: - 1881-1900: PRI - 1995-2014: HIS - 2081-2100: FUT DEPTH: - 0-300 m: dmin0_dmax300 - 100 m: ilevel9 - 1000 m: ilevel21 - Seafloor: seafloor BIOMES: - High Chlorophyll: HC - Intermediate Chlorophyll: IC - Low Chlorophyll: LC - Southern Ocean: SO - Arctic Ocean: LCA NetCDF Variables: ------------------ - SALP: Filter-feeding gelatinous Macrozooplankton (FFGM) - ZOO3: Generic Macrozooplankton (GM) - ZOO2: Mesozooplankton - ZOO: Microzooplankton - PHY: Nanophytoplankton - PHY2: Diatoms - POC: Small particles (quantity or flux) - GOC: Large particles (quantity or flux) - SPCC: FFGM carcasses carbon (content or flux) - SPFC: FFGM fecal pellets carbon (content or flux) - MPCC: GM carcasses carbon (content or flux) - MPFC: GM fecal pellets carbon (content or flux) - CHL: Chlorophyll - Cflx: Carbon uptake - NO3: Nitrate - PO4: Phosphate - O2: Oxygen For any inquiries or data access requests, please contact corentin.clerc -at- usys.ethz.ch.

opencc-by-4.0Sep 2023View details →

Supplementary datasets for "Thermal evolution of the lithosphere-asthenosphere boundary beneath arc and its geodynamic implications: depth variation of thermal histories of mantle xenoliths from Ichinomegata, Northeast Japan"

Supplementary datasets for Sato and Ozawa (2023, JGR:SE) "Thermal evolution of the lithosphere-asthenosphere boundary beneath arc and its geodynamic implications: depth variation of thermal histories of mantle xenoliths from Ichinomegata, Northeast Japan" Data Set S1. Original chemical zoning profile data of olivine and pyroxene and raw results of the diffusion modelling applied to them. Data Set S2. Original X-ray mapping data of olivine and pyroxene. Data Set S3. Composite images of microphotographs showing the entire thin section of the examined xenolith samples.

opencc-by-4.0Feb 2022View details →

1-D Model Files for Martian atmospheric chemistry of HCl: implications for the lifetime of atmospheric methane

File containing 1-D model  [netCDF] files used in the JGR: Planets manuscript "Martian atmospheric chemistry of HCl: implications for the lifetime of atmospheric methane". MCD-model.zip Contains data files where the 1-D model is driven using Mars Climate Database v5.3 standard climatological profiles of dust and ice aerosols and H2O. readme.txt provides details of the subdirectory structure. TGO-model.zip Contains data files where the 1-D model is driven using dust and ice aerosol profiles retrieved by the ACS TIRVIM and H2O profiles retrieved by either the NOMAD spectrometer or ACS NIR channel.  readme.txt provides details of the directory structure. matching_orbits.txt Spatio-temporal details of the 77 ACS MIR HCl retrievals that we aim to reproduce, including the details of the approximately co-located ACS TIRVIM aerosol and NOMAD/ACS NIR H2O retrievals used to drive the 1-D model.

opencc-by-4.0Sep 2023View details →

Mercury abundance and isotopic composition in granitic rocks: Implications for Hg cycling in the upper continental crust

Mercury (Hg) is a highly volatile metal exhibiting both isotope mass-dependent (MDF, defined as δ202Hg) and mass-independent (MIF, expressed as Δ199Hg) fractionation. Assessing the Hg isotopic composition of the upper continental crust is crucial for the use of this new geochemical tool for petrogenetic tracing, particularly for understanding crust-mantle interaction. Here, we report Hg isotopic compositions of granitic rocks with distinct source affinity (I-, A-, and S-type) and of metasedimentary enclaves from the South China Craton. The results of more than 100 rock samples show large δ202Hg variations of -2.03 to 0.47 &permil; and relatively small Δ199Hg variations of -0.16 to 0.09 &permil;. The S-type granites studied here exhibit higher δ202Hg values (-0.58 to 0.00 &permil;; n=57) than their sedimentary protoliths (metasedimentary enclaves; -2.03 to -0.91 &permil;; n=7), suggesting significant Hg-MDF during magmatic processes. The Δ199Hg values of S-type granites (-0.08 to 0.09 &permil;) are indistinguishable from their sedimentary protoliths (-0.16 to 0.02 &permil;), suggestive of the absence of Hg-MIF during crustal anatexis and subsequent magmatic differentiation. The I- and A-type granites studied have smaller Δ199Hg variations of -0.11 to 0.04 &permil; (n=28) and -0.07 to 0.04 &permil; (n=15), respectively, but are within the range of the S-type granites. The compositional range of all granite variants may be explained by the variable intensity of large-scale MASH (melting-assimilation-storage-homogenization) processes. Our new data combined with previously published data of igneous, sedimentary and metamorphic rocks allow us to estimate that the upper continental crust (UCC) has a Hg abundance of 13.5 ppb and a weighted average δ202Hg of -1.15 ± 1.01 &permil; (2SD), which are higher than the corresponding value of the primitive mantle, indicating the enrichment of Hg and δ202Hg in the UCC. However, the weighted average Δ199Hg value of the UCC (0.03 ± 0.15 &permil;; 2SD) is undistinguished from the primitive mantle, suggesting no obvious Hg-MIF during the formation and differentiation of the continental crust.

Phosphorus nutrition strategies in a symbiodiniacean species: Implications in coral-alga symbiosis facing increasing phosphorus deficiency in future warmer oceans

Coral reefs thrive in the oligotrophic ocean and rely on symbiotic algae to acquire nutrients. Global warming is projected to intensify surface ocean nutrient deficiency and anthropogenic discharge of wastes with high nitrogen (N): phosphorus (P) ratios can exacerbate P nutrient limitation. However, our understanding on how symbiotic algae cope with P deficiency is limited. Here, we investigated the responses of a coral symbiotic species of Symbiodiniaceae, Cladocopium goreaui, to P-limitation by examining its physiological performance and transcriptomic profile. Under P stress, C. goreaui exhibited decreases in algal growth, photosynthetic efficiency, and cellular P content but enhancement in carbon fixation, N assimilation, N:P ratio, and energy metabolism, with downregulated expression of carbohydrate exporter genes. Besides, C. goreaui showed flexible mechanisms of utilizing different dissolved organic phosphorus to relieve P deficiency. When provided glycerol phosphate, C. goreaui hydrolyzed it extracellularly to produce phosphate for uptake. When grown on phytate, in contrast, C. goreaui upregulated the endocytosis pathway while no dissolved inorganic phosphorus was released into the medium, suggesting that phytate was transported into the cell, potentially via the endocytosis pathway. This study sheds light on the survival strategies of C. goreaui and potential weakening of its role as an organic carbon supplier in P-limited environments, underscoring the importance of more systematic investigation on future projections of such effects.

Genomic diversity and population structure of teosintes (Zea spp.) and its conservation implications

The wild species of the genus Zea commonly named teosintes, comprise nine different taxa, distributed from northern Mexico to Costa Rica. Although this genus of plants has been extensively studied from a morphological, ecogeographical and genetic point of view, most contributions have been limited to the study of a few populations and taxa. To understand the great variability that exists between and within teosinte species, it is necessary to include the vast majority of known populations. In this context, the objective of this work was to evaluate the diversity and genomic structure of 276 teosinte populations. Molecular analyzes were performed with 3,604 plants and with data from 33,929 SNPs. The levels of genetic diversity by taxonomic group show a marked difference between species, races and sections, where the highest values of genomic diversity were found in ssp. parviglumis and ssp. mexicana. The lower values were obtained for the Luxuriantes section as well as ssp. huehuetenagensis of the section Zea. The results of the structure show that there is a great genetic differentiation in all the taxonomic groups considered. For ssp. parviglumis and mexicana, which are the taxa with the largest number of populations, a marked genomic differentiation was found that is consistent with their geographic distribution patterns. These results showed a loss of diversity in several teosinte populations, making a strong case for further collection, and ex situ and in situ conservation. Also, this study highlights the importance of integrating genomic diversity and structure for the applications of conservation and management.

Neogloboquadrina pachyderma LA-ICP-MS spectral files and stable isotope data from: Geochemical differences between alive, uncrusted and dead, crusted shells of Neogloboquadrina pachyderma: Implications for paleoreconstruction

Planktic foraminiferal-based trace element-calcium ratios (TE/Ca) are a cornerstone in paleoceanographic reconstructions. While TE-environment calibrations are often established through culturing experiments, shell growth in culture is not always consistent with growth in a natural setting. For example, many species of planktic foraminifera thicken their shell at the end of their life cycle, producing a distinct 'gametogenic' crust. Crust is common in fossil foraminifers, however, shells grown in culture do not often develop a thick crust. Here we investigate potential vital effects associated with the crusting process by comparing the trace element (Mg/Ca, Na/Ca, Ba/Ca, Sr/Ca, Mn/Ca, Zn/Ca) and stable isotope (δ13C, δ18O) composition of alive, fully mature, uncrusted shells to recently deceased, crusted shells of Neogloboquadrina pachyderma collected from the same plankton tows off the Oregon (USA) coast. We find that uncrusted (N = 55) shells yield significantly higher Ba/Ca, Na/Ca, Mn/Ca, and Sr/Ca than crusted (N = 66) shells, and crust calcite records significantly lower TE/Ca values for all elements examined. Isotopic mixing models suggest that the crust calcite accounts for ~40 to 70% of crusted shell volume. Comparison of foraminiferal and seawater isotopes indicate that N. pachyderma lives in the upper 90 m of the water column, and that crust formation occurs slightly deeper than their average living depth habitat. Results highlight the necessity to establish calibrations from crusted shells, as application of calibrations from TE-enriched uncrusted shells may yield attenuated or misleading paleoceanographic reconstructions.

Data to support: Implications of snowpack reactive bromine production for Arctic ice core bromine preservation

Snowpack emissions are recognized as an important source of gas-phase reactive bromine in the Arctic and are necessary to explain ozone depletion events in spring caused by the catalytic destruction of ozone by halogen radicals. Quantifying bromine emissions from snowpack is essential for interpretation of ice-core bromine. We present ice-core bromine records since the pre-industrial (1750 CE) from six Arctic locations and examine potential post-depositional loss of snowpack bromine using a global chemical transport model. Trend analysis of the ice-core records shows that only the high-latitude coastal Akademii Nauk ice core from the Russian Arctic preserves significant trends since pre-industrial times that are consistent with trends in sea ice extent and anthropogenic emissions from source regions. Model simulations suggest that recycling of reactive bromine on the snow skin layer (top 1mm) results in 9–17% loss of deposited bromine across all six ice-core locations. Reactive bromine production from below the snow skin layer and within the snow photic zone is potentially more important, but the magnitude of this source is uncertain. Model simulations suggest that the Akademii Nauk core is most likely to preserve an atmospheric signal compared to five Greenland ice cores due to its high latitude location combined with a relatively high snow accumulation rate. Understanding the sources and amount of photochemically reactive snow bromide in the snow photic zone throughout the sunlit period in the high Arctic is essential for interpreting ice-core bromine, and warrants further lab studies and field observations at inland locations.

Implications of Ga Promotion and Metal-Oxide Interface from Tailored PtGa Propane Dehydrogenation Catalysts Supported on Carbon

From comparison of carbon-supported Pt and PtGa propane dehydrogenation catalysts, the role of Ga promotion is elucidated via electron microscopy showing amorphous PtGa nanoparticles, hence, being responsible for Pt-site isolation, which drives catalytic stability and selectivity.

The legacy of ecological imperialism in the Scandes: earthworms and their implications for Arctic research

Data used in the article 'The legacy of ecological imperialism in the Scandes: earthworms and their implications for Arctic research' in the scientific journal 'Arctic, Antarctic, and Alpine Research'. The various columns are explained in the sheet 'Metadata'.

opencc-zeroOct 2023View details →

Data from: Bridging the extant and fossil record of planktonic foraminifera: implications for the Globigerina lineage

Dataset for the biometric study on picked specimens of the planktonic foraminifer Globigerina falconensis. The individuals span the biozones M4 to PT1 from various locations worldwide. All specimens come from cored drill samples from IODP Site U1482, ODP Site 590, Meteor M32. Extra 33 samples are from a geological outcrop located in Siena Basin (Italy). All these data have been used for the paper entitled: Bridging the extant and fossil record of planktonic foraminifera: implications for the Globigerina lineage.

Carbonatite metasomatism in subvolcanic settings: implications for magmatic evolution and eruptive style

The supplementary tables S1-S4 which support for the manuscript "Carbonatite metasomatism in subvolcanic settings: implications for magmatic evolution and eruptive style"

opencc-zeroOct 2023View details →

Localized uplift, widespread subsidence and implications for sea level rise in the NYC Metropolitan Area

Regional relative sea level rise is exacerbating flooding hazards in the coastal zone. In addition to changes in the ocean, vertical land motion (VLM) is a driver of spatial variation in sea-level change that can either diminish or enhance flood risk. Here we apply state-of-the-art Interferometric Synthetic Aperture Radar (InSAR) and global navigation satellite system (GNSS) time-series analysis to estimate velocities and corresponding uncertainties at 30 m resolution in the New York City Metropolitan Area, revealing VLM with unprecedented detail. We find broad subsidence of 1.6 mm/yr consistent with glacial isostatic adjustment to the melting of the former ice sheets, and previously undocumented hotspots of both subsidence and uplift that can be physically explained in some locations. Our results inform ongoing efforts to adapt to sea-level rise and reveal points of VLM that motivate both future scientific investigations into surface geology and assessments of engineering projects.

opencc-zeroOct 2023View details →

Birds are better at regulating heat loss through their legs than their bills: Implications for body shape evolution in response to climate

Endotherms use their appendages – such as legs, tails, ears and bills – for thermoregulation by controlling blood flow to near-surface blood vessels, conserving heat when it is cold, and dissipating heat in hot conditions. Larger appendages allow greater heat dissipation, and appendage sizes vary latitudinally according to Allen's Rule. However, little is known about the relative importance of different appendages for thermoregulation. We investigate physiological control of heat loss via bird bills and legs using infra-red thermography of wild birds. Our results demonstrate that birds are less able to regulate heat loss via their bills than their legs. In cold conditions, birds lower their leg surface temperature to below that of their plumage surface, retaining heat at their core. In warm conditions, birds increase their leg surface temperature to above that of their plumage surface, expelling heat. In contrast, bill surface temperature remains ~2˚C warmer than the plumage surface, indicating consistent heat loss under almost all conditions. Poorer physiological control of heat loss via bird bills likely entails stronger selection for shorter bills in cold climates. This could explain why bird bills show stronger latitudinal size clines than bird legs, with implications for predicting shape-shifting responses to climate change.

The origin of granitoids in Southwest Japan: Implications for the transition from Pacific to Philippine Sea plate subduction

Data for the research entitled "The origin of granitoids in Southwest Japan: Implications for the transition from Pacific to Philippine Sea plate subduction" by Dao et al., submitted to JP. Table S1: Geochemical data of plutonic rocks in Southwest Japan: (1) Ryoke belt; (2) Sanyo belt; (3) Sanin belt. Table S2: Petrographic observation: (1) Modal abundances; (2) Mineral assemblages. Table S3: Zircon U-Pb ages (Ma) of plutonic rocks in SW Japan from this study. Table S4: Compilation of age data for Cretaceous-Paleogene igneous rocks in SW Japan. Table S5: Geochemical data of plutonic rocks in SW Japan compiled by Haraguchi et al. (2018). Table S6: Compilation of Sr-Nd isotope data of ~110 Ma to ~20 Ma plutonic rocks in SW Japan. Table S7: CIPW normative compositions of SW-Japan granitoids from this study. Table S8: End-member components used to estimate sediment contributions. Table S9: Results of sediment contribution estimations.

Case study result data set for the submitted article "Implications of hydrogen import prices for the German energy system in a model-comparison experiment"

The data set contains result data for the German energy system in a long term scenario (scenario year 2045) as described in the publication "Implications of hydrogen import prices for the German energy system in a model-comparison experiment". The results have been generated with the models REMod of Fraunhofer Institute for Solar Energy Systems ISE, Enertile of Fraunhofer Institute for Systems and Innovation Research ISI, and SCOPE SD of Fraunhofer Institute for Energy Economics and Energy System Technology IEE.Abbreviations:<ul><li>BEV - Battery Electric Vehicles</li><li>CC - Combined Cycle</li><li>CCGT - Combined Cycle Gas Turbine</li><li>CHP - Combined heat and power</li><li>CO2 - Carbon dioxide</li><li>con - consumption</li><li>FC - Fuel Cell</li><li>FCEV - Fuel Cell Electric Vehicle</li><li>gen - generation</li><li>H2 - Hydrogen</li><li>HT - High temperature</li><li>ICE - Internal Combustion Engine</li><li>LDV - Light-Duty Vehicle</li><li>LT - Low temperature</li><li>med - medium</li><li>OC - Open Cycle</li><li>OCGT - Open Cycle Gas Turbine</li><li>PHEV - Plug-In Hybrid Vehicles</li><li>PS - Pumped Storage</li><li>PV - Photovoltaics</li><li>ST - Steam turbine</li><li>SynFuel - Synthetic fuel</li><li>w/ - with</li><li>w/o - without</li><li>yr - year</li></ul>

opencc-by-4.0Aug 2024View details →

Data for: Detection of oomycete pathogens in UK peat-free growing media and implications for plant health

This dataset on Zenodo accompanies the manuscript Frederickson-Matika et al. (2024), Detection of oomycete pathogens in UK peat-free growing media and implications for plant health. There are two files: <ul> <li>metadata.tsv - plain text table as tab-separated variables</li> <li>raw_data.tar.gz - compressed archive of 43 paired raw FASTQ files</li> </ul> This represents a subset of two complete Illumina MiSeq plates (in two dated folderes) run at the James Hutton Institute containing other environmental samples using the same protocol. Only the synthetic controls and peat-free samples are provided here. To repeat the analysis described in the paper, first install THAPBI PICT. See <a href="https://github.com/peterjc/thapbi-pict/">https://github.com/peterjc/thapbi-pict/ </a>for instructions. At the time of the paper, v1.0.14 was the current release. Next, decompress the raw data into a folder of paired gzipped FASTQ files. There is no need to decompress those: <pre><code> $ tar -zxvf raw_data.tar.gz $ ls -1 plate_20220505/ plate_20230608/</code></pre> If you wish, verify the checksums to confirm the data integrity: <pre><code> $ cd plate_20220505/ $ md5sum -c MD5SUM.txt $ cd ../plate_20230608/   $ md5sum -c MD5SUM.txt $ cd ..</code></pre> Setup output directories: <pre><code><code>   $ mkdir -p intermediate/ summary/</code></code></pre> <pre>Run the THAPBI PICT pipeline:</pre> <pre><code>   $ thapbi_pict pipeline -m 1s3g \ -i plate_*/ -o summary/peat-free \ -y plate_*/GBL*.fastq.gz \ -n plate_*/GBL*.fastq.gz \ -s intermediate/ \ -t metadata.tsv -u \ -x 9 -c 1,2,3,4,5,6,7,8</code> </pre> The options here are as follows: <ul> <li>-i - two input directories of paired raw FASTQ files.</li> <li>-n - negative controls used to increase the absolute abundance threshold</li> <li>-y - synthetic controls used to increase the fractional abundance threshold</li> <li>-s - optional location to store intermediate files</li> <li>-o - output stem for reports</li> <li>-t - filename for tab-separated-variable metadata</li> <li>-u - show unsequenced samples defined in the metadata</li> <li>-x - which metadata column contains Illumina FASTQ filename stems</li> <li>-c - which metadata columns to include in the report.</li> </ul> This assumes the following key default settings: <ul> <li>-a 100 (default absolite abundance threshold)</li> <li>-f 0.001 (default fractional abundance threshold)</li> <li>-d -(default provided ITS1 database).</li> </ul> With these settings, only synthetic sequences were found in the controls, and therefore the thresholds were not automatically increased any further. Opening the output file summary/peat-free.ITS1.samples.1s3g.xlsx in Excel or similar should show you a table resembling Table 1 in the paper, but one row per sequencing sample, and additional columns with per-sample per-species read counts etc.