{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Melinda Martinez", "hasEmail": "mailto:melindamartinez@usgs.gov"}, "description": "Wind speed, wind direction (3D) and gas concentrations are measured at 10 Hz and statistically processed using the eddy covariance technique to half-hour estimates of flux rates of gas exchange between the ecosystem and atmosphere. Three gases were measured: carbon dioxide, methane and water vapor. Simultaneous measurements of environmental drivers are also measured and recorded as half-hourly values: photosynthetic photon flux density, downwelling and upwelling short and long wave radiation, air temperature, relative humidity and precipitation. Variable names and units follow AmeriFlux and FLUXNET standards. This site is a flotant herbaceous freshwater marsh in Salvador Wildlife Management Area near Luling, LA.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.17190/AMF/1543387", "description": "Landing page for access to the data", "format": "XML", "mediaType": "application/http", "title": "Digital Data"}, {"@type": "dcat:Distribution", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.81135a0d-5391-4881-85c5-a23fe2667ec2.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_81135a0d-5391-4881-85c5-a23fe2667ec2", "keyword": ["Emergent Tidal Marsh", "Freshwater Tidal Marsh", "USGS:81135a0d-5391-4881-85c5-a23fe2667ec2", "biota", "environment", "greenhouse gases", "wetland functions"], "modified": "2024-11-21T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-90.288900, 29.856700, -90.284900, 29.860700", "theme": ["geospatial"], "title": "Methane, carbon dioxide and water vapor fluxes from a Louisiana tidal freshwater marsh, 2023"}