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626 results for “Methanation”
Gridded posterior methane emissions
<p>The publication <a href="https://doi.org/10.5194/acp-22-15351-2022">Estimating Emissions of Methane Consistent with Atmospheric Measurements of Methane and δ¹³C of Methane</a> reports methane emissions inferred from a joint assimilation of atmospheric CH₄ and δ¹³CH₄ measurements. The inversion problem is under-constrained, and therefore inversely estimated fluxes should not be interpreted at the spatiotemporal resolution of the inversion. However, for visualization and modeling purposes, it is often convenient to have gridded flux estimates that, while not direct outputs from the inversion, satisfy multiple regional constraints from the inversion. This 1º×1º flux product is such a construction. At annual, continental scales, the total methane emissions per source type are identical to those from the CH₄ + δ¹³CH₄ inversion in the publication. The monthly, sub-continental patterns are dictated by the prior (inventory) emission estimates used in the publication.</p>
1-D Model Files for Martian atmospheric chemistry of HCl: implications for the lifetime of atmospheric methane
<p>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".</p> <p><strong>MCD-model.zip</strong></p> <p>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.</p> <p><strong>TGO-model.zip</strong></p> <p>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.</p> <p><strong>matching_orbits.txt</strong></p> <p>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.</p>
Data from: Microbial activity contributes to spatial heterogeneity of wetland methane fluxes
<p>The emission of methane from wetlands is spatially heterogeneous, as concurrently measured surface fluxes can vary by orders of magnitude within the span of a few meters. Despite extensive study and the climatic significance of these greenhouse gas emissions, it remains unclear what drives these large within-site variations, creating a knowledge-gap that impedes a mechanistic understanding of wetland fluxes. While geophysical variables including water table depth (WTD) and soil temperature are known to correlate with CH<sub>4</sub> flux, measurable variance in these parameters declines as spatial and temporal scales become finer. Here, we leveraged depth-stratified gene abundance and gene expression measurements of methanogenesis and methanotrophy to investigate CH<sub>4</sub> flux variance at an ombrotrophic peat bog. Our results show that the flux variance was strongly correlated to methanogen abundance and that peat depth also exerted significant control over CH<sub>4</sub> flux, methanogen abundance, and the relationship between the two. Correlations between CH<sub>4</sub> flux and either WTD or soil temperature were absent or minimal. These findings suggest that microbial factors likely underlie localized variance in wetland CH<sub>4</sub> flux, and that a greater reliance on biological predictors could improve our ability to understand wetland methane fluxes at finer scales than is currently possible.</p>
Hourly methane and carbon dioxide fluxes from temperate ponds
<p>This dataset consists of methane and carbon dioxide flux measurements from three forest and three open-land ponds in Denmark. Furthermore, oxygen, water temperature and weather data are also available.</p> <p>The data is part of the scientifical paper published in Springer Biogeochemistry </p> <p><em><strong>Hourly methane and carbon dioxide<sub> </sub>fluxes from temperate ponds</strong></em></p>
Evolution of sediment temperature, pressure, phases distribution, carbon pools and seabed methane flux at the Arctic continental Shelves since the Last Glacial Maximum
<p>This dataset are produced by a manuscript (<strong>Biodegradation of Ancient Organic Carbon Fuels Seabed Methane Emission at the Arctic Continental Shelves</strong>) to be submitted to the Journal of Geophysical Research - Global Biogeochemical Cycles. I</p> <p>The file "MethaneEmission_Permafrost" contains the predicted temperature, pressure, pore water salinity, ice stable zone, methane hydrate stable zone, ice saturation, methane hydrate saturation, free methane gas saturation, labile organic carbon content, stable organic carbon content, and methanogenesis rate from seafloor to 1200 m depth from 18,000 years before present to 2,000 years after present for 8 different simulation scenarios. </p> <p>The file "Seabed_Methane_Flux" contains the predicted seabed methane emission rate from 18,000 years before present to 2,000 years after present for 8 different simulation scenarios. </p> <p>Detailed information about the model could be found in the paper <strong>Biodegradation of Ancient Organic Carbon Fuels Seabed Methane Emission at the Arctic Continental Shelves. </strong></p> <p> </p>
Predicting Methane Formation Rates of Freshwater Sediments in Different Biogeographic Regions
<p>These datasets uploaded here contain:</p> <p>CH4 formation rates of sediment layers incubated from nine Swedish lakes (<a href="https://zenodo.org/api/files/39e74df0-e0c7-41a6-88c6-d37bcc1ffb49/CH4Formation_SwedishLakes.csv">CH4Formation_SwedishLakes.csv</a>), their sediment characteristics measured in different layers and land use data</p> <p>CH4 formation rates retrieved from Isidorova et al. (2019,<a href="http://urn.kb.se/resolve?urn=urn%3Anbn%3Ase%3Auu%3Adiva-387547">urn:nbn:se:uu:diva-387547</a>). From this dataset we extracted only the maximum CH4 formation rates and are reported in the file <a href="https://zenodo.org/api/files/39e74df0-e0c7-41a6-88c6-d37bcc1ffb49/CH4Formation_BrazilianReservoirs.csv">CH4Formation_BrazilianReservoirs.csv</a></p> <p>CH4 formation rates used to calculate CH4 formation decay rate with age for Swedish lakes (<a href="https://zenodo.org/api/files/39e74df0-e0c7-41a6-88c6-d37bcc1ffb49/CH4Formation_SwedishLakes_forDecayRate.csv">CH4Formation_SwedishLakes_forDecayRate.csv</a>)</p> <p>Supplementary information <a href="https://zenodo.org/api/files/4a6d58c8-6f6b-4665-93d2-14554fc8eb0e/SupplementaryInfo.pdf">SupplementaryInfo.pdf</a> related to CH4 formation rates and sediment age</p> <p>Extraction of PLS analysis results <a href="https://zenodo.org/api/files/39e74df0-e0c7-41a6-88c6-d37bcc1ffb49/PLS_List.xlsx">PLS_List.xlsx</a></p>
Neomycin and Rifaximin Plus Neomycin in Treating Methane Positive Constipation Predominant Irritable Bowel Syndrome
ClinicalTrials.gov study NCT00945334. IPD Sharing: Not stated. Countries: 1. Publications: 2.
Amplicon sequence variants by sample table from Antarctic methane seeps
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Methane fluxes measured by eddy covariance on Dutch peatlands
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Raised bogs are the key source of methane in West Siberia terrestrial seeps
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Turkmenistan methane point source detections and retrievals from Landsat 5 (1986-2011)
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Methane and carbon dioxide cumulative amounts data for: Algal amendment enhances biogenic methane production from coals of different thermal maturity
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Data from: Light-dependent methane production by a coccolithophorid may counteract its photosynthetic contribution to carbon dioxide sequestration
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Graminoids vary in functional traits, carbon dioxide and methane fluxes in a restored peatland: implications for modeling carbon storage
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Janus Mn single atoms for triggering efficient photothermal catalytic CO2 methanation through spin polarization effect
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Particulate organic carbon sedimentation triggers lagged methane emissions in a eutrophic reservoir
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Data from: Controlled irrigation suppresses methane emissions by reshaping the rhizosphere microbiomes in rice
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Global methane and nitrous oxide emissions from inland waters and estuaries
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Data for: Intercomparison of commercial analyzers for atmospheric ethane and methane observations
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Data from: Carbon dioxide and methane fluxes from different surface types in a created urban wetland
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.