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A model investigation into the atmospheric NOy chemistry in remote continental Asia

Cited 3 time in wos
Cited 3 time in scopus
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Title
A model investigation into the atmospheric NOy chemistry in remote continental Asia
Other Titles
수치모델을 이용한 중앙아시아 지역의 대기중 NOx 거동
Authors
Han, K. M.
Lee, S.
Yoon, Young Jun
Lee, Bang Yong
Song, C. H
Subject
Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences
Keywords
Tropospheric NO2 column; Columnar net NOx chemical production rates (P-NOx); Thermal decomposition of PANs; NOx chemical loss; Soil NOx emissions; OMI
Issue Date
2019-10
Citation
Han, K. M., et al. 2019. "A model investigation into the atmospheric NOy chemistry in remote continental Asia". ATMOSPHERIC ENVIRONMENT, 214(1): 1-11.
Abstract
The OMI-observed tropospheric NO2 columns over highly polluted regions in East Asia showed high values during the cold seasons and low values during the warm seasons. On the contrary, the monthly trends over Mongolia are completely opposite to those in polluted regions in East Asia. This study was initiated by such an interesting contrast. To determine the key factors controlling such monthly trends over Mongolia, we used the WRF-CMAQ simulated data. In the analysis, we explored the budget of (columnar net NOx chemical production rates), taking into account atmospheric chemical production and removal of NOx as well as surface (soil) NOx emissions. For the polluted regions, NOx emissions show the largest values, followed by in terms of the magnitudes. Among the negative contributors, the largest contribution is made by (columnar net NOx chemical production rates via the HNO3 and RNO3-related reactions) ranging between -42% and -77% during the warm months. Other negative contributions from (columnar net NOx chemical production rates via the formations and decompositions of PANs) and (columnar net NOx chemical production rates via the heterogeneous reactions of NO3 and N2O5) are relatively small. Unlike the situations over the polluted regions, the negative was offset completely by ENOx (emission of NOx) and positive over the remote continental regions of Mongolia. was also regarded as an important atmospheric process, and its positive contributions range between 5% and 51% over the remote continental regions of (south) Mongolia. From the analysis, it was found that NO2 produced via thermal decomposition of PANs in the remote continental regions of Mongolia contribute to the high NO2 columns during the warm seasons and low values during the cold seasons
URI
https://repository.kopri.re.kr/handle/201206/10930
DOI
http://dx.doi.org/10.1016/j.atmosenv.2019.116817
Appears in Collections  
2019-2019, Arctic permafrost environment change monitoring and prediction method developments (19-19) / Lee, Bang Yong (PN19081)
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