Long-term changes of regional ozone in China: implications for human health and ecosystem impacts
The first Tropospheric Ozone Assessment Report (TOAR) provides information on present-day distributions and long-term trends of ozone metrics relevant for climate change, human health, and vegetation. However, only few results are available in TOAR for China due to limited long-term ozone observatio...
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| Format: | Article |
| Language: | English |
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BioOne
2020-03-01
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| Series: | Elementa: Science of the Anthropocene |
| Subjects: | |
| Online Access: | https://www.elementascience.org/articles/409 |
| _version_ | 1818033475469443072 |
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| author | Xiaobin Xu Weili Lin Wanyun Xu Junli Jin Ying Wang Gen Zhang Xiaochun Zhang Zhiqiang Ma Yuanzhen Dong Qianli Ma Dajiang Yu Zou Li Dingding Wang Huarong Zhao |
| author_facet | Xiaobin Xu Weili Lin Wanyun Xu Junli Jin Ying Wang Gen Zhang Xiaochun Zhang Zhiqiang Ma Yuanzhen Dong Qianli Ma Dajiang Yu Zou Li Dingding Wang Huarong Zhao |
| author_sort | Xiaobin Xu |
| collection | DOAJ |
| description | The first Tropospheric Ozone Assessment Report (TOAR) provides information on present-day distributions and long-term trends of ozone metrics relevant for climate change, human health, and vegetation. However, only few results are available in TOAR for China due to limited long-term ozone observations. Here, we present an integrated analysis of long-term measurements of surface ozone from eight sites distributed in the North China Plain (NCP) and Yangtze River Delta (YRD), the relatively underdeveloped region Northeast China, and the remote regions in Northwest and Southwest China. Trends and present-day values for seven annual and five seasonal ozone metrics were calculated following the TOAR methodologies. We compare the seasonal and diurnal cycles of ozone concentrations as well as the present-day values of ozone among sites and discuss the long-term trends in the ozone metrics. Large and significant increases of ozone are detected at the background site in the NCP, moderate increases at the global baseline site in western China, significant decreases at the northwestern edge of China, and nearly no trend at other sites. Extremely high values of ozone occurred in the NCP and YRD, particularly in warmer seasons. The present-day levels of summer ozone metrics in the NCP are much higher than the thresholds set in TOAR for the highest value groups of ozone metrics. The summer ozone metrics at the Shangdianzi background site in the NCP indicate increases at rates of more than 2%/yr during 2004–2016. In contrast, ozone at the Lin’an background site in the YRD was constant over the period 2006–2016. Our results fill some knowledge gaps in spatiotemporal changes of ozone in China and may be of useful in the assessment of ozone impacts on human health and vegetation. |
| first_indexed | 2024-12-10T06:23:51Z |
| format | Article |
| id | doaj.art-f646d6a753354966a5e14de764651f79 |
| institution | Directory Open Access Journal |
| issn | 2325-1026 |
| language | English |
| last_indexed | 2024-12-10T06:23:51Z |
| publishDate | 2020-03-01 |
| publisher | BioOne |
| record_format | Article |
| series | Elementa: Science of the Anthropocene |
| spelling | doaj.art-f646d6a753354966a5e14de764651f792022-12-22T01:59:17ZengBioOneElementa: Science of the Anthropocene2325-10262020-03-018110.1525/elementa.409383Long-term changes of regional ozone in China: implications for human health and ecosystem impactsXiaobin Xu0Weili Lin1Wanyun Xu2Junli Jin3Ying Wang4Gen Zhang5Xiaochun Zhang6Zhiqiang Ma7Yuanzhen Dong8Qianli Ma9Dajiang Yu10Zou Li11Dingding Wang12Huarong Zhao13State Key Laboratory of Severe Weather and Key Laboratory for Atmospheric Chemistry, Institute of Atmospheric Composition, Chinese Academy of Meteorological Sciences, BeijingMeteorological Observation Center, China Meteorological Administration, Beijing; College of Life and Environmental Sciences, Minzu University of China, BeijingState Key Laboratory of Severe Weather and Key Laboratory for Atmospheric Chemistry, Institute of Atmospheric Composition, Chinese Academy of Meteorological Sciences, BeijingMeteorological Observation Center, China Meteorological Administration, BeijingState Key Laboratory of Severe Weather and Key Laboratory for Atmospheric Chemistry, Institute of Atmospheric Composition, Chinese Academy of Meteorological Sciences, BeijingState Key Laboratory of Severe Weather and Key Laboratory for Atmospheric Chemistry, Institute of Atmospheric Composition, Chinese Academy of Meteorological Sciences, BeijingMeteorological Observation Center, China Meteorological Administration, BeijingInstitute of Urban Meteorology, China Meteorological Administration, BeijingWaliguan Observatory, Qinghai Meteorological Bureau, XiningLin’an Atmosphere Background National Observation and Research Station, Lin’anLongfengshan Regional Atmosphere Background Station, WuchangDiqing Meteorological Bureau, DiqingAkedala Regional Atmosphere Background Station, Altay Meteorological Bureau, XinjiangInstitute of Eco-Environment and Agricultural Meteorology, Chinese Academy of Meteorological Sciences, BeijingThe first Tropospheric Ozone Assessment Report (TOAR) provides information on present-day distributions and long-term trends of ozone metrics relevant for climate change, human health, and vegetation. However, only few results are available in TOAR for China due to limited long-term ozone observations. Here, we present an integrated analysis of long-term measurements of surface ozone from eight sites distributed in the North China Plain (NCP) and Yangtze River Delta (YRD), the relatively underdeveloped region Northeast China, and the remote regions in Northwest and Southwest China. Trends and present-day values for seven annual and five seasonal ozone metrics were calculated following the TOAR methodologies. We compare the seasonal and diurnal cycles of ozone concentrations as well as the present-day values of ozone among sites and discuss the long-term trends in the ozone metrics. Large and significant increases of ozone are detected at the background site in the NCP, moderate increases at the global baseline site in western China, significant decreases at the northwestern edge of China, and nearly no trend at other sites. Extremely high values of ozone occurred in the NCP and YRD, particularly in warmer seasons. The present-day levels of summer ozone metrics in the NCP are much higher than the thresholds set in TOAR for the highest value groups of ozone metrics. The summer ozone metrics at the Shangdianzi background site in the NCP indicate increases at rates of more than 2%/yr during 2004–2016. In contrast, ozone at the Lin’an background site in the YRD was constant over the period 2006–2016. Our results fill some knowledge gaps in spatiotemporal changes of ozone in China and may be of useful in the assessment of ozone impacts on human health and vegetation.https://www.elementascience.org/articles/409surface ozonechinaexposure metricshuman healthvegetationlong-term trends |
| spellingShingle | Xiaobin Xu Weili Lin Wanyun Xu Junli Jin Ying Wang Gen Zhang Xiaochun Zhang Zhiqiang Ma Yuanzhen Dong Qianli Ma Dajiang Yu Zou Li Dingding Wang Huarong Zhao Long-term changes of regional ozone in China: implications for human health and ecosystem impacts Elementa: Science of the Anthropocene surface ozone china exposure metrics human health vegetation long-term trends |
| title | Long-term changes of regional ozone in China: implications for human health and ecosystem impacts |
| title_full | Long-term changes of regional ozone in China: implications for human health and ecosystem impacts |
| title_fullStr | Long-term changes of regional ozone in China: implications for human health and ecosystem impacts |
| title_full_unstemmed | Long-term changes of regional ozone in China: implications for human health and ecosystem impacts |
| title_short | Long-term changes of regional ozone in China: implications for human health and ecosystem impacts |
| title_sort | long term changes of regional ozone in china implications for human health and ecosystem impacts |
| topic | surface ozone china exposure metrics human health vegetation long-term trends |
| url | https://www.elementascience.org/articles/409 |
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