Quantifying Methane Emissions from Individual Coal Mine Vents with GHGSat-D Satellite Observations
Abstract
GHGSat-D was launched in June 2016 as a demonstration instrument for the planned GHGSat satellite constellation, which aims to quantify emissions from individual methane point sources using fine-resolution (< 50 m) observations of methane plumes. GHGSat-D has much coarser precision ( 13%) than is planned for the constellation (1-5%), but we show that it can still detect plumes from individual coal mine vents after time averaging of wind-rotated observations on successive overpasses. We present observations for the San Juan (USA), Camden (Australia), and Bulianta (China) coal mines and deduce the corresponding emissions with error estimates using Gaussian plume inversion, integrated methane enhancement (IME), and cross-sectional flux methods.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2018
- Bibcode:
- 2018AGUFM.A43R3443V
- Keywords:
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- 0345 Pollution: urban and regional;
- ATMOSPHERIC COMPOSITION AND STRUCTUREDE: 3394 Instruments and techniques;
- ATMOSPHERIC PROCESSESDE: 0428 Carbon cycling;
- BIOGEOSCIENCESDE: 0478 Pollution: urban;
- regional and global;
- BIOGEOSCIENCES