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Diurnal fluxes of HONO above a crop rotation

التفاصيل البيبلوغرافية
العنوان: Diurnal fluxes of HONO above a crop rotation
المؤلفون: S. Laufs, M. Cazaunau, P. Stella, R. Kurtenbach, P. Cellier, A. Mellouki, B. Loubet, J. Kleffmann
المصدر: Atmospheric Chemistry and Physics, Vol 17, Pp 6907-6923 (2017)
بيانات النشر: Copernicus Publications, 2017.
سنة النشر: 2017
المجموعة: LCC:Physics
LCC:Chemistry
مصطلحات موضوعية: Physics, QC1-999, Chemistry, QD1-999
الوصف: Nitrous acid (HONO) fluxes were measured above an agricultural field site near Paris during different seasons. Above bare soil, different crops were measured using the aerodynamic gradient (AG) method. Two LOPAPs (LOng Path Absorption Photometer) were used to determine the HONO gradients between two heights. During daytime mainly positive HONO fluxes were observed, which showed strong correlation with the product of the NO2 concentration and the long wavelength UV light intensity, expressed by the photolysis frequency J(NO2). These results are consistent with HONO formation by photosensitized heterogeneous conversion of NO2 on soil surfaces as observed in recent laboratory studies. An additional influence of the soil temperature on the HONO flux can be explained by the temperature-dependent HONO adsorption on the soil surface. A parameterization of the HONO flux at this location with NO2 concentration, J(NO2), soil temperature and humidity fits reasonably well all flux observations at this location.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 1680-7316
1680-7324
Relation: http://www.atmos-chem-phys.net/17/6907/2017/acp-17-6907-2017.pdf; https://doaj.org/toc/1680-7316; https://doaj.org/toc/1680-7324
DOI: 10.5194/acp-17-6907-2017
URL الوصول: https://doaj.org/article/15050e333c364649adabd2903c597a5f
رقم الأكسشن: edsdoj.15050e333c364649adabd2903c597a5f
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:16807316
16807324
DOI:10.5194/acp-17-6907-2017