Meteorologically adjusted long-term trend of ground-level ozone concentrations in Kaohsiung County, southern Taiwan

Li, H.C.; Chen, K.S.; Huang, Chin-Hung; Wang, H.K.

doi:10.1016/j.atmosenv.2010.04.011

Cited by 12 publications

(6 citation statements)

References 15 publications

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“…Analysis of satellite column NO 2 retrievals (not shown) indicates that NO 2 emissions in east Asia have doubled from 1996 to 2011, increasing at a relative rate similar to CO 2 emissions (as first reported by Richter et al [2005]), while emissions in midlatitude North America and Europe have decreased. In response, surface ozone has decreased in the eastern U.S. (this study) and Europe [ Logan et al , 2012], and increased in east Asia [ Beig and Singh , 2007; Ding et al , 2008; Wang et al , 2009; Lin et al , 2010; Li et al , 2010; Parrish et al , 2012]. Apparently, the sphere of influence of the increase of emissions and ozone within Asia extends downwind as far as the free troposphere above western North America [ Cooper et al , 2010].…”

Section: Resultsmentioning

confidence: 99%

Long‐term ozone trends at rural ozone monitoring sites across the United States, 1990–2010

et al. 2012

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[1] This analysis provides an up-to-date assessment of long-term rural ozone trends using all available data in the western (12 sites) and eastern (41 sites) USA. Rather than focus solely on average ozone values or air quality standard violations, we consider the full range of ozone values, reporting trends for the 5th, 50th and 95th percentiles. Domestic ozone precursor emissions decreased strongly during 1990-2010. Accordingly 83%, 66% and 20% of summertime eastern U.S. sites experienced statistically significant ozone decreases in the 95th, 50th and 5th percentiles, respectively. During spring 43% of the eastern sites have statistically significant ozone decreases for the 95th percentile with no sites showing a significant increase. At the 50th percentile there is little overall change in the eastern U.S. In contrast, only 17% (2 sites) and 8% (1 site) of summertime western U.S. sites have statistically significant ozone decreases in the 95th and 50th percentiles, respectively. During spring no western site has a significant decrease, while 50% have a significant median increase. This dichotomy in U.S. ozone trends is discussed in terms of changing anthropogenic and biomass burning emissions. Consideration is given to the concept that increasing baseline ozone flowing into the western U.S. is counteracting ozone reductions due to domestic emission reductions. An update to the springtime free tropospheric ozone trend above western North America shows that ozone has increased significantly from 1995 to 2011 at the rate of 0.41 AE 0.27 ppbv yr À1 . Finally, the ozone changes are examined in relation to regional temperature trends.

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Section: Resultsmentioning

confidence: 99%

Long‐term ozone trends at rural ozone monitoring sites across the United States, 1990–2010

et al. 2012

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“…Surface ozone has increased in baseline air masses coming ashore along the US west coast (Parrish et al 2012) and at half of the rural sites in the western United States during spring (Cooper et al 2012). East Asian surface ozone is generally increasing (Ding et al 2008;Li et al 2010;Lin et al 2010;Parrish et al 2012;Oltmans et al 2013). East Asian surface ozone is generally increasing (Ding et al 2008;Li et al 2010;Lin et al 2010;Parrish et al 2012;Oltmans et al 2013).…”

Section: Sidebar 21: Tropospheric Ozone-o Cooper and J Ziemkementioning

confidence: 99%

State of the Climate in 2012

Blunden¹,

Arndt²

2013

Bulletin of the American Meteorological Society

151

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“…In the eastern US surface ozone has decreased strongly in summer especially for extreme events (Lefohn et al 2010), is largely unchanged in spring, and has increased in winter, while ozone increases in the western US are strongest in spring . East Asian surface ozone is generally increasing (Ding et al 2008;Wang et al, 2009;Li et al, 2010;Lin et al, 2010;Parrish et al, 2012;Oltmans et al, 2013). Downwind from Asia, ozone is increasing in the lower free troposphere at Mauna Loa, Hawaii (Lin et al, 2014), but decreasing at the remote marine boundary layer site of Minamitorishima, Japan (Oltmans et al, 2013).…”

Section: Ozone Trendsmentioning

confidence: 99%

Global distribution and trends of tropospheric ozone: An observation-based review

Cooper

Parrish

Ziemke

et al. 2014

Elementa: Science of the Anthropocene

468

446

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Tropospheric ozone plays a major role in Earth's atmospheric chemistry processes and also acts as an air pollutant and greenhouse gas. Due to its short lifetime, and dependence on sunlight and precursor emissions from natural and anthropogenic sources, tropospheric ozone's abundance is highly variable in space and time on seasonal, interannual and decadal time-scales. Recent, and sometimes rapid, changes in observed ozone mixing ratios and ozone precursor emissions inspired us to produce this up-to-date overview of tropospheric ozone's global distribution and trends. Much of the text is a synthesis of in situ and remotely sensed ozone observations reported in the peer-reviewed literature, but we also include some new and extended analyses using well-known and referenced datasets to draw connections between ozone trends and distributions in different regions of the world. In addition, we provide a brief evaluation of the accuracy of rural or remote surface ozone trends calculated by three state-of-the-science chemistry-climate models, the tools used by scientists to fill the gaps in our knowledge of global tropospheric ozone distribution and trends.

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Meteorologically adjusted long-term trend of ground-level ozone concentrations in Kaohsiung County, southern Taiwan

Cited by 12 publications

References 15 publications

Long‐term ozone trends at rural ozone monitoring sites across the United States, 1990–2010

Long‐term ozone trends at rural ozone monitoring sites across the United States, 1990–2010

State of the Climate in 2012

Global distribution and trends of tropospheric ozone: An observation-based review

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