Articles | Volume 25, issue 23
https://doi.org/10.5194/acp-25-18291-2025
https://doi.org/10.5194/acp-25-18291-2025
Research article
 | 
12 Dec 2025
Research article |  | 12 Dec 2025

Ammonia exchange flux over a tropical dry deciduous forest in the dry season in Thailand

Mao Xu, Phuvasa Chanonmuang, Hiroyuki Sase, Atsuyuki Sorimachi, Syuichi Itahashi, and Kazuhide Matsuda

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Cited articles

Aman, N., Panyametheekul, S., Pawarmart, I., Sudhibrabha, S., and Manomaiphiboon, K.: A visibility-based historical PM2.5 estimation for four decades (1981–2022) using machine learning in Thailand: Trends, meteorological normalization, and influencing factors using SHAP analysis, Aerosol Air Qual. Res., 25, 4, https://doi.org/10.1007/s44408-025-00007-z, 2025.  
Amnuaylojaroen, T., Inkom, J., Janta, R., and Surapipith, V.: Long range transport of Southeast Asian PM2.5 pollution to northern Thailand during high biomass burning episodes, Sustainability, 12, 10049, https://doi.org/10.3390/su122310049, 2020. 
Ban, S., Matsuda, K., Sato, K., and Ohizumi, T.: Long-term assessment of nitrogen deposition at remote EANET sites in Japan, Atmos. Environ., 146, 70–78, https://doi.org/10.1016/j.atmosenv.2016.04.015, 2016. 
Ban, S., Matsuda, K., and Ohizumi, T.: A method estimating dry deposition for assessment of nitrogen load on forests in East Asia, Water Air Soil Pollut., 233, 417, https://doi.org/10.1007/s11270-022-05874-5, 2022. 
Bash, J. O., Cooter, E. J., Dennis, R. L., Walker, J. T., and Pleim, J. E.: Evaluation of a regional air-quality model with bidirectional NH3 exchange coupled to an agroecosystem model, Biogeosciences, 10, 1635–1645, https://doi.org/10.5194/bg-10-1635-2013, 2013. 
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Short summary
We first observed the exchange flux of ammonia over a tropical forest in Thailand. Measurements were taken during two periods in the dry season with different environmental conditions. This data improves our understanding of how ammonia behaves in forests under tropical climates and helps refine models that estimate nitrogen deposition and assess its impact across East Asia.
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