Path Integrated Optical Remote Sensing technique to estimate ammonia and methane emissions from CAFOs
نویسندگان
چکیده
Abstract. The U.S. EPA recently demonstrated that the open-path optical remote sensing technology could be used to identify hot spots and estimate mass flux of fugitive gases from closed landfills. The objective of this research was to validate this technology for estimating ammonia and methane emission from concentrated animal feeding operations (CAFOs). The technology utilizes the vertical radial plume mapping (VRPM) method, which reconstructs a vertical plume map based on several path-integrated concentrations of fugitive gases measured with open-path optical instruments. The mass flux of fugitive gas is then estimated by multiplying the vertical plane-integrated concentration by the averaged wind speed components normal to the vertical plane. The experimental system consists of an open-path tunable diode laser CH4 detector (Boreal Laser) mounted on an automatic positioning device, a 10-m weather mast, wind sensors, and integrated VRPM software (Arcadis Inc., NC). This method measured the methane emission rate from a distribution source with good accuracies.
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Measurement of greenhouse gas emissions from agricultural sites using open-path optical remote sensing method.
Improved characterization of distributed emission sources of greenhouse gases such as methane from concentrated animal feeding operations require more accurate methods. One promising method is recently used by the USEPA. It employs a vertical radial plume mapping (VRPM) algorithm using optical remote sensing techniques. We evaluated this method to estimate emission rates from simulated distribu...
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