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- W4313402778 abstract "<strong class=journal-contentHeaderColor>Abstract.</strong> Volatilization of ammonia (NH<sub>3</sub>) from fertilizer application and livestock wastes is an overwhelmingly important pathway of nitrogen losses in agricultural ecosystems and constitutes the largest source of atmospheric NH<sub>3</sub>. The volatilization of NH<sub>3</sub> highly depends on environmental and meteorological conditions, however, this phenomenon is poorly described in current emission inventory and atmospheric models. Here, we develop a dynamic NH<sub>3</sub> emission model capable of calculating NH<sub>3</sub> emission rate interactively with time- and spatial-varying meteorological and soil conditions. The NH<sub>3</sub> flux parameterization relies on several meteorological factors and anthropogenic activity including fertilizer application, livestock waste, traffic, residential and industrial sectors. The model is then embedded into a regional WRF-Chem model and is evaluated against field measurements of NH<sub>3</sub> concentrations and emission flux, and satellite retrievals of column loading. The evaluation shows a substantial improvement in the model performance of NH<sub>3</sub> flux and ambient concentration in China. The model well represents the spatial and temporal variations of ambient NH<sub>3</sub> concentration, indicating the highest emission in the North China Plain (NCP) and Sichuan Basin, especially during summertime. Compared with normal simulations using fixed emission inventory input, this model features superior capability in simulating NH<sub>3</sub> emission flux and concentration during drastic weather changes like frontal activities and precipitation. Such advances in emission quantification also improve the model performance of secondary inorganic aerosol on synoptic scales. While more laboratory and field measurements are still needed for better parameterization of NH<sub>3</sub> volatilization, the seamless coupling of soil emission with meteorology provides a better understanding of NH<sub>3</sub> emission evolution and its contribution to atmospheric chemistry." @default.
- W4313402778 created "2023-01-06" @default.
- W4313402778 date "2022-12-19" @default.
- W4313402778 modified "2023-10-01" @default.
- W4313402778 title "Comment on gmd-2022-231" @default.
- W4313402778 doi "https://doi.org/10.5194/gmd-2022-231-rc1" @default.
- W4313402778 hasPublicationYear "2022" @default.
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