where u8 is the wind velocity (meters per second) at 8 m above the water surface. The diffusivities are calculated using the following equations:
where M is the molecular weight (grams per mole), Ta and Taq are the air and water temperatures (kelvin), and v is the molecular diffusion volume (cubic centimeters per mole).
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Appendix F: Ammonia Emissions from Manure Storage ."
Air Emissions from Animal Feeding Operations: Current Knowledge, Future Needs . Washington, DC: The National Academies Press,
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