ABoVE: SAR-based Methane Ebullition Flux from Lakes, Five Regions, Alaska, 2007-2010

Description

This dataset provides Synthetic Aperture Radar (SAR) estimates of lake-source methane ebullition flux in mg CH4/m2/d for thousands of lakes in five regions across Alaska. The study regions include the Atqasuk, Barrow Peninsula, Fairbanks, northern Seward Peninsula, and Toolik. L-band SAR backscatter values for early winter lake ice scenes were collected from 2007 to 2010 over 5,143 lakes using the Phased Array type L-band Synthetic Aperture Radar (PALSAR) instrument on the Advanced Land Observing Satellite (ALOS-1) satellite. The backscatter data were combined with field measurements of methane ebullition from 48 study lakes across the five regions to obtain a volumetric flux estimate for each lake. Mean methane gas-fractions from each region were applied to the SAR-based volumetric fluxes to obtain an estimate of methane ebullition mass flux per lake. The data files contain lake perimeters and the lake-specific attributes of lake area, SAR backscatter values and standard errors, volumetric flux with standard errors, mean percent of methane from gas samples, and methane ebullition mass flux.

Resources

Name Format Description Link
5 https://search.earthdata.nasa.gov%2Fsearch%3Fq%3DSAR_Methane_Ebullition_AK_1790%26ac%3Dtrue
5 https://daac.ornl.gov%2FABOVE%2Fguides%2FSAR_Methane_Ebullition_AK.html
5 https://doi.org%2F10.3334%2FORNLDAAC%2F1790
5 https://data.ornldaac.earthdata.nasa.gov%2Fprotected%2Fbundle%2FSAR_Methane_Ebullition_AK_1790.zip
5 https://daac.ornl.gov%2FABOVE%2Fguides%2FSAR_Methane_Ebullition_AK_Fig1.png
5 https://above.nasa.gov%2F
5 https://data.ornldaac.earthdata.nasa.gov%2Fpublic%2Fabove%2FSAR_Methane_Ebullition_AK%2Fcomp%2FSAR_Methane_Ebullition_AK.pdf
5 https://data.ornldaac.earthdata.nasa.gov%2Fpublic%2Fabove%2FSAR_Methane_Ebullition_AK%2Fcomp%2Fbarrow_peninsula.kml
5 https://data.ornldaac.earthdata.nasa.gov%2Fpublic%2Fabove%2FSAR_Methane_Ebullition_AK%2Fcomp%2Fatqasuk.kml
5 https://data.ornldaac.earthdata.nasa.gov%2Fpublic%2Fabove%2FSAR_Methane_Ebullition_AK%2Fcomp%2Ffairbanks.kml
5 https://data.ornldaac.earthdata.nasa.gov%2Fpublic%2Fabove%2FSAR_Methane_Ebullition_AK%2Fcomp%2Fnorthern_seward_peninsula.kml
5 https://data.ornldaac.earthdata.nasa.gov%2Fpublic%2Fabove%2FSAR_Methane_Ebullition_AK%2Fcomp%2Ftoolik.kml
5 https://search.earthdata.nasa.gov/search?q=SAR_Methane_Ebullition_AK_1790&ac=true
21 https://doi.org/10.3334/ORNLDAAC/1790
57 SAR_Methane_Ebullition_AK_1790.zip https://data.ornldaac.earthdata.nasa.gov/protected/bundle/SAR_Methane_Ebullition_AK_1790.zip
5 northern_seward_peninsula.kml https://data.ornldaac.earthdata.nasa.gov/public/above/SAR_Methane_Ebullition_AK/comp/northern_seward_peninsula.kml
5 barrow_peninsula.kml https://data.ornldaac.earthdata.nasa.gov/public/above/SAR_Methane_Ebullition_AK/comp/barrow_peninsula.kml
5 https://above.nasa.gov/
33 SAR_Methane_Ebullition_AK.pdf https://data.ornldaac.earthdata.nasa.gov/public/above/SAR_Methane_Ebullition_AK/comp/SAR_Methane_Ebullition_AK.pdf
5 atqasuk.kml https://data.ornldaac.earthdata.nasa.gov/public/above/SAR_Methane_Ebullition_AK/comp/atqasuk.kml
5 fairbanks.kml https://data.ornldaac.earthdata.nasa.gov/public/above/SAR_Methane_Ebullition_AK/comp/fairbanks.kml
5 toolik.kml https://data.ornldaac.earthdata.nasa.gov/public/above/SAR_Methane_Ebullition_AK/comp/toolik.kml
34 SAR_Methane_Ebullition_AK_Fig1.png https://daac.ornl.gov/ABOVE/guides/SAR_Methane_Ebullition_AK_Fig1.png
0 The metadata's original source. https://cmr.earthdata.nasa.gov/search/concepts/C2143401901-ORNL_CLOUD.iso19115

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  • nasa
  • remote-sensing
  • earth-science

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