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.
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Spatial Extent: | Bounding Rectangle: N: 71.35 S: 64.44 E: -147.37 W: -165.17 |
Data Format(s): | Distribution: Binary |
Temporal Extent: | Platform(s): | ALOS | |
Data Center(s): | ORNL_DAAC | Instrument(s): | PALSAR |
Version: | 1 |
10.3334/ORNLDAAC/1790
https://doi.org
Creation | |
Last Revision |
3
Variables mapped on uniform space-time grid scales with completeness and consistency
Complete
Project Short Name | Campaigns | Project Dates |
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ABoVE | No campaigns listed. | No dates provided. |
Coverage Type | Zone Identifier | Geometry | Granule Representation |
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HORIZONTAL | CARTESIAN | CARTESIAN |
ORNL DAAC User Services Office, P.O. Box 2008, MS 6407, Oak Ridge National Laboratory
Oak Ridge,
Tennessee
37831-6407
(865) 241-3952
There are no listed data contacts for this collection.
Format: Binary
Format Type: Native
Fees: 0