Calculation of NH3 Emissions, Evaluation of Backward Lagrangian Stochastic Dispersion Model and Aerodynamic Gradient Method
نویسندگان
چکیده
Two campaigns measuring ammonia (NH3) emissions with different measurement techniques were performed on a large grass field (26 ha) after the application of liquid animal manure. The aim was to compare from confined area estimated either (i) concentration measurements, both point and line-integrated combined backward Lagrangian stochastic (bLS) dispersion modeling or by (ii) estimation vertical flux aerodynamic gradient method (AGM) without footprint correction approximated bLS model estimates footprint. objective comparison is establish best practice derive NH3 field. derived agreed well when comparing measurements. Simple measurements yield good emission estimations for area. Without correction, AGM underestimates up 9% compared footprint-corrected results. sensitivity methods makes it possible quantify diurnal patterns even five days manure under wet conditions. proves be strong tool determine inside slurry application.
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ژورنال
عنوان ژورنال: Atmosphere
سال: 2021
ISSN: ['2073-4433']
DOI: https://doi.org/10.3390/atmos12010102