Methane Fluxes from Shorelines and Differing Surfaces, Big Trail Lake, Alaska, 2019
This dataset provides methane fluxes from hot-spot and non-hot spot differing surfaces at Big Trail Lake (BTL) in the Goldstream Valley near Fairbanks, AK, USA. Measurements were taken at a remotely-sensed methane hotspot on the shoreline of a pond, adjacent to BTL with a Los Gatos Ultra-Portable Greenhouse Gas Analyzer (UGGA), and from various non-hotspot surfaces representative of the broader thermokarst lake ecosystem with bucket chambers. All data were collected between 2019-07-04 and 2019-12-04 during the daytime hours of 09:35-17:32 local time. A ground-based CH4 enhancement survey was performed on 2019-07-06 between 13:25-17:15 Alaska Daylight Time (AKDT), approximately two hours following an AVIRIS-NG overflight and hotspot detection at the Eastside Pond. Methane flux is reported in units of both mmol CH4 m-2 hr-1 and mg CH4 m-2 d-1. Flux errors are quantified for each
Complete Metadata
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|
| description | This dataset provides methane fluxes from hot-spot and non-hot spot differing surfaces at Big Trail Lake (BTL) in the Goldstream Valley near Fairbanks, AK, USA. Measurements were taken at a remotely-sensed methane hotspot on the shoreline of a pond, adjacent to BTL with a Los Gatos Ultra-Portable Greenhouse Gas Analyzer (UGGA), and from various non-hotspot surfaces representative of the broader thermokarst lake ecosystem with bucket chambers. All data were collected between 2019-07-04 and 2019-12-04 during the daytime hours of 09:35-17:32 local time. A ground-based CH4 enhancement survey was performed on 2019-07-06 between 13:25-17:15 Alaska Daylight Time (AKDT), approximately two hours following an AVIRIS-NG overflight and hotspot detection at the Eastside Pond. Methane flux is reported in units of both mmol CH4 m-2 hr-1 and mg CH4 m-2 d-1. Flux errors are quantified for each |
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| identifier | 10.3334/ORNLDAAC/1870 |
| keyword |
[
"earth-science-ecosystems-biosphere-freshwater-ecosystems-lake-pond",
"earth-science-paleoclimate-indicators-climate-indicators-permafrost-methane-release"
]
|
| landingPage | https://search.earthdata.nasa.gov/search?q=CH4_Fluxes_ThermokarstLakes_AK_1870&ac=true |
| modified | 2026-02-17 |
| programCode |
[
"026:000"
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"@type": "org:Organization"
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| spatial |
"[[{"WestBoundingCoordinate":-147.825,"NorthBoundingCoordinate":64.9208,"EastBoundingCoordinate":-147.818,"SouthBoundingCoordinate":64.9171}],"CARTESIAN"]"
|
| temporal | 2019-07-04/2019-07-04 |
| theme |
[
"Earth Science"
]
|
| title | Methane Fluxes from Shorelines and Differing Surfaces, Big Trail Lake, Alaska, 2019 |
