Found 80 datasets matching "methane concentrations".
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The GlobalView Methane (CH4) data product contains synchronized and smoothed time series of atmospheric CH4 concentrations at selected sites that were created using the data extension and...
Search relevance: 128.96 | Views last month: 0 -
This data set provides average hourly measured, modeled enhancements, and background methane (CH4) concentrations, atmospheric ethane (C2H6) measurements, prior CH4 flux fields by sector, and a...
Search relevance: 125.02 | Views last month: 0 -
Soil gas methane and combustible gas concentrations collected from oil and gas well pad locations in Utah. Soil gas samples were measured on site and/or collected for later analysis as described...
Search relevance: 123.41 | Views last month: 0 -
A comprehensive study of water quality in two streams was conducted in the Midwestern United States in 1999 to 2003. The Iroquois River and Sugar Creek, located in northwestern Indiana and...
Search relevance: 106.63 | Views last month: 0 -
A watershed in the coastal Canadian Arctic was sampled for dissolved carbon dioxide and methane concentration and stable carbon (carbon-13) isotopes to trace the transport, production, and...
Search relevance: 103.88 | Views last month: 0 -
Determining how much methane and carbon dioxide cross the sea-air interface is critical when assessing marine greenhouse gas fluxes. This assessment is particularly important on Arctic Ocean...
Search relevance: 76.52 | Views last month: 0 -
In 2013 to 2015, 833 public supply wells in 15 Principal aquifers in the United States (U.S.) were sampled to identify which aquifers contained high methane concentrations (>1 mg/L) and determine...
Search relevance: 64.82 | Views last month: 0 -
Data published in the paper "Using Open-Path Dual-Comb Spectroscopy to Monitor Methane Emissions from Simulated Grazing Cattle". A controlled methane release experiment was performed to determine...
Search relevance: 59.13 | Views last month: 0 -
There are three data types in this dataset. 1) Dissolved methane concentrations and stable carbon isotope ratios were measured from water samples collected in the water column and sediments of...
Search relevance: 59.12 | Views last month: 0 -
Data file (.csv) including data plotted in manuscript figures: methane and sulfate concentrations, and stable isotope data for carbon, hydrogen, sulfur, and oxygen. This dataset is associated...
Search relevance: 56.09 | Views last month: 0 -
This metadata record contains 15 tables with results from field and laboratory tests used to assess bioremediation in wetland areas at the Standard Chlorine of Delaware, Inc. Superfund site, New...
Search relevance: 55.68 | Views last month: 3 -
A discrete sample introduction module (DSIM) was developed and interfaced to a cavity ring-down spectrometer to enable measurements of methane and CO2 concentrations and 13C values with a...
Search relevance: 55.59 | Views last month: 0 -
This dataset contains sediment samples, ammonium concentrations and methane data collected during R/V Atlantis cruise AT26-13 in the northern Gulf of Mexico from March 31 to April 21, 2014. The...
Search relevance: 53.37 | Views last month: 0 -
A study was conducted to assess the relationships among carbon mineralization, sulfate reduction and greenhouse gas emissions in prairie pothole wetlands. These data are for dissolved methane and...
Search relevance: 52.71 | Views last month: 0 -
This data set reports methane (CH4) fluxes at the water-air interface and concentrations and isotopic signals of CH4 in the bubbles stirred up from the sediment in Tucurui and Samuel reservoirs in...
Search relevance: 52.52 | Views last month: 0 -
This data release describes data that were contributed to the GasHype project, a global data compilation effort. Goals of the GasHype project include assessing concentrations of carbon dioxide and...
Search relevance: 51.69 | Views last month: 0 -
A critical question for assessing global greenhouse gas budgets is how much of the methane that escapes from seafloor cold seep sites to the overlying water column eventually crosses the sea-air...
Search relevance: 51.49 | Views last month: 0 -
This dataset provides the hourly average of continuous atmospheric measurements of methane (CH4) from two urban sites and three boundary sites in and around Boston, Massachusetts, U.S., from...
Search relevance: 50.68 | Views last month: 0 -
The BOREAS TGB-01 team made numerous measurements of trace gas concentrations and fluxes at various NSA sites. This data set contains methane (CH4) and carbon dioxide (CO2) concentrations in soil...
Search relevance: 50.45 | Views last month: 0 -
The BOREAS TF-11 team gathered a variety of data to complement their tower flux measurements collected at the SSA Fen site. The data described in this document were made by the TF-11 team at the...
Search relevance: 50.32 | Views last month: 0
