Ozone deposition measurements over wheat fields in the North China Plain: variability and related factors of deposition flux and velocity DOI Creative Commons

Xiaoyi Zhang,

Wanyun Xu, Weili Lin

и другие.

Atmospheric chemistry and physics, Год журнала: 2024, Номер 24(21), С. 12323 - 12340

Опубликована: Ноя. 7, 2024

Abstract. Ozone (O3) deposition is the main sink of surface O3, exerting great influences on air quality and ecosystems. Due to instrument limitations method shortages, O3 was less observed investigated in China, where has been reported be continuously significantly rising. Here, we conducted comprehensive measurements over a wheat canopy at typical polluted agricultural site North China Plain using newly developed relaxed eddy accumulation system. For growing season 2023, flux velocity (Vd) averaged −0.25 ± 0.39 µgm-2s-1 0.29 0.33 cm s−1, respectively. Daytime Vd (0.40 0.38 s−1) obviously higher than nighttime (0.17 0.26 s−1). The temporal changes were mainly determined by crop growth, increased with decreasing relative humidity increasing friction soil water content, enhanced leaf area index. With rapid increases moisture, simultaneous following overall increments detected, attributed remarkably strengthening stomatal uptake under conductance extended opening into night, more non-stomatal removal night resulted from strengthened NO emission moist conditions. This study confirms leading effects growth modulated environmental conditions non-negligible nocturnal plant activities, it emphasizes need for observation different surfaces accurate evaluation impacts based fluxes.

Язык: Английский

Cause of nocturnal surface ozone enhancement in the North China Plain DOI
Tianyi Hao, Bo Liu,

Ziying Cai

и другие.

The Science of The Total Environment, Год журнала: 2024, Номер 954, С. 176583 - 176583

Опубликована: Сен. 30, 2024

Язык: Английский

Процитировано

1
A horizon scan of biological conservation issues for 2025 DOI Creative Commons
William J. Sutherland, Peter N. M. Brotherton,

Holly M. Butterworth

и другие.

Trends in Ecology & Evolution, Год журнала: 2024, Номер unknown

Опубликована: Дек. 1, 2024

Язык: Английский

Процитировано

1
Ozone deposition measurements over wheat fields in the North China Plain: variability and related factors of deposition flux and velocity DOI Creative Commons

Xiaoyi Zhang,

Wanyun Xu, Weili Lin

и другие.

Опубликована: Март 27, 2024

Abstract. Ozone (O3) deposition is closely related to air quality, ecosystem and climate changes. Due the instrument method shortage, O3 was less observed investigated in China, experiencing significantly increasing exposure. Here, we conducted a comprehensive measurement of over wheat canopy at typical polluted agricultural site North China Plain using newly developed relaxed eddy accumulation system. For main growing season 2023, flux velocity (Vd) averaged -0.25 ± 0.39 μg m-2 s-1 0.29 0.33 cm s-1, respectively. Daytime Vd (0.40 0.38 s-1) obviously higher than nighttime (0.17 0.26 s-1). The temporal changes were mainly determined by crop growth, with predominant contribution stomatal uptake. Both daytime exhibited significant increases decreasing relative humidity, friction soil water content, enhanced leaf area index. With rapid moisture, simultaneous following overall increments detected, attributed remarkably strengthening uptake under increased conductance extended opening night, more non-stomatal removal night resulted from strengthened NO emission moist conditions. This study confirms leading effects growth on modulated environmental conditions non-negligible influences nocturnal plant activities, emphasizes needs for observation different surfaces accurate evaluation impacts based fluxes.

Язык: Английский

Процитировано

0
A Comparative Investigation of the Characteristics of Nocturnal Ozone Enhancement Events and Their Effects on Ground-Level Ozone and PM2.5 in the Central City of the Yellow River Delta, China, in 2022 and 2023 DOI Creative Commons

Cong An,

Yongxin Yan,

Xiaoshuai Gao

и другие.

Atmosphere, Год журнала: 2024, Номер 15(4), С. 475 - 475

Опубликована: Апрель 11, 2024

In recent years, nocturnal ozone enhancement (NOE) events have emerged as a prominent research focus in the field of atmospheric environment. By using statistical analysis methods, we conducted comparative investigation concentrations and NOE Dongying, central city Yellow River Delta, China, 2022 2023, further explored effects on O3 PM2.5 same night subsequent day. The results showed that from to annual average increased 51 μg/m3 59 μg/m3, frequency was higher spring, summer, autumn, lower winter. not only exhibited promoting Ox, daily maximum 8 h concentration (MDA8-O3) day (comparatively noticeable summer autumn), but also demonstrated clear impact PM2.5-bounded NO3− SO42− (especially winter). Additionally, led well MDA8-O3 levels during day, with more observable impacts summer. could strengthen our understanding about provide scientific basis for collaborative control urban areas Delta China.

Язык: Английский

Процитировано

0
Comment on egusphere-2024-643 DOI Creative Commons

Xiaoyi Zhang,

Wanyun Xu, Weili Lin

и другие.

Опубликована: Апрель 19, 2024

Abstract. Ozone (O3) deposition is closely related to air quality, ecosystem and climate changes. Due the instrument method shortage, O3 was less observed investigated in China, experiencing significantly increasing exposure. Here, we conducted a comprehensive measurement of over wheat canopy at typical polluted agricultural site North China Plain using newly developed relaxed eddy accumulation system. For main growing season 2023, flux velocity (Vd) averaged -0.25 ± 0.39 μg m-2 s-1 0.29 0.33 cm s-1, respectively. Daytime Vd (0.40 0.38 s-1) obviously higher than nighttime (0.17 0.26 s-1). The temporal changes were mainly determined by crop growth, with predominant contribution stomatal uptake. Both daytime exhibited significant increases decreasing relative humidity, friction soil water content, enhanced leaf area index. With rapid moisture, simultaneous following overall increments detected, attributed remarkably strengthening uptake under increased conductance extended opening night, more non-stomatal removal night resulted from strengthened NO emission moist conditions. This study confirms leading effects growth on modulated environmental conditions non-negligible influences nocturnal plant activities, emphasizes needs for observation different surfaces accurate evaluation impacts based fluxes.

Язык: Английский

Процитировано

0
Reply on RC1 DOI Creative Commons

Wanyun Xu

Опубликована: Авг. 5, 2024

Abstract. Ozone (O3) deposition is closely related to air quality, ecosystem and climate changes. Due the instrument method shortage, O3 was less observed investigated in China, experiencing significantly increasing exposure. Here, we conducted a comprehensive measurement of over wheat canopy at typical polluted agricultural site North China Plain using newly developed relaxed eddy accumulation system. For main growing season 2023, flux velocity (Vd) averaged -0.25 ± 0.39 μg m-2 s-1 0.29 0.33 cm s-1, respectively. Daytime Vd (0.40 0.38 s-1) obviously higher than nighttime (0.17 0.26 s-1). The temporal changes were mainly determined by crop growth, with predominant contribution stomatal uptake. Both daytime exhibited significant increases decreasing relative humidity, friction soil water content, enhanced leaf area index. With rapid moisture, simultaneous following overall increments detected, attributed remarkably strengthening uptake under increased conductance extended opening night, more non-stomatal removal night resulted from strengthened NO emission moist conditions. This study confirms leading effects growth on modulated environmental conditions non-negligible influences nocturnal plant activities, emphasizes needs for observation different surfaces accurate evaluation impacts based fluxes.

Язык: Английский

Процитировано

0
Reply on RC2 DOI Creative Commons

Wanyun Xu

Опубликована: Авг. 5, 2024

Abstract. Ozone (O3) deposition is closely related to air quality, ecosystem and climate changes. Due the instrument method shortage, O3 was less observed investigated in China, experiencing significantly increasing exposure. Here, we conducted a comprehensive measurement of over wheat canopy at typical polluted agricultural site North China Plain using newly developed relaxed eddy accumulation system. For main growing season 2023, flux velocity (Vd) averaged -0.25 ± 0.39 μg m-2 s-1 0.29 0.33 cm s-1, respectively. Daytime Vd (0.40 0.38 s-1) obviously higher than nighttime (0.17 0.26 s-1). The temporal changes were mainly determined by crop growth, with predominant contribution stomatal uptake. Both daytime exhibited significant increases decreasing relative humidity, friction soil water content, enhanced leaf area index. With rapid moisture, simultaneous following overall increments detected, attributed remarkably strengthening uptake under increased conductance extended opening night, more non-stomatal removal night resulted from strengthened NO emission moist conditions. This study confirms leading effects growth on modulated environmental conditions non-negligible influences nocturnal plant activities, emphasizes needs for observation different surfaces accurate evaluation impacts based fluxes.

Язык: Английский

Процитировано

0
The threat from ozone to vegetation in Ireland DOI Creative Commons

Keelan McHugh,

Thomas Cummins, Julian Aherne

и другие.

Environmental Research, Год журнала: 2024, Номер 262, С. 119974 - 119974

Опубликована: Сен. 11, 2024

Язык: Английский

Процитировано

0
Effects of valley topography on ozone pollution in the Lanzhou valley: a numerical case study DOI
Wenkai Guo,

Yanping Yang,

Junke Zhang

и другие.

Environmental Pollution, Год журнала: 2024, Номер 363, С. 125225 - 125225

Опубликована: Ноя. 2, 2024

Язык: Английский

Процитировано

0
Ozone deposition measurements over wheat fields in the North China Plain: variability and related factors of deposition flux and velocity DOI Creative Commons

Xiaoyi Zhang,

Wanyun Xu, Weili Lin

и другие.

Atmospheric chemistry and physics, Год журнала: 2024, Номер 24(21), С. 12323 - 12340

Опубликована: Ноя. 7, 2024

Abstract. Ozone (O3) deposition is the main sink of surface O3, exerting great influences on air quality and ecosystems. Due to instrument limitations method shortages, O3 was less observed investigated in China, where has been reported be continuously significantly rising. Here, we conducted comprehensive measurements over a wheat canopy at typical polluted agricultural site North China Plain using newly developed relaxed eddy accumulation system. For growing season 2023, flux velocity (Vd) averaged −0.25 ± 0.39 µgm-2s-1 0.29 0.33 cm s−1, respectively. Daytime Vd (0.40 0.38 s−1) obviously higher than nighttime (0.17 0.26 s−1). The temporal changes were mainly determined by crop growth, increased with decreasing relative humidity increasing friction soil water content, enhanced leaf area index. With rapid increases moisture, simultaneous following overall increments detected, attributed remarkably strengthening stomatal uptake under conductance extended opening into night, more non-stomatal removal night resulted from strengthened NO emission moist conditions. This study confirms leading effects growth modulated environmental conditions non-negligible nocturnal plant activities, it emphasizes need for observation different surfaces accurate evaluation impacts based fluxes.

Язык: Английский

Процитировано

0