| 1. |
- Ekman, A, et al.
(författare)
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Swedish Clean Air and Climate Research Programme – SCAC Final report second phase
- 2020
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- The SCAC-2 program was initiated to provide an extended scientific knowledge base in national and international discussions and negotiations on the development of new air pollution policies and measures. Specifically, the program was focused on four main areas where additional knowledge was needed to support further actions: air pollution and climate interactions and hemispheric transport; air pollution and human health with focus on particles from transport and domestic wood burning; ecosystem effects (and air pollution – climate interactions) of ozone and nitrogen, the latter with emphasis on national nitrogen budgets and biodiversity. Finally, integrated assessment modelling and identification of the most efficient abatement strategies was included.
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| 2. |
- Johansson, Julia M., et al.
(författare)
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The European heat wave of 2018 and its promotion of the ozone climate penalty in southwest Sweden
- 2020
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Ingår i: Boreal Environment Research. - 1239-6095 .- 1797-2469. ; 25, s. 39-50
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Tidskriftsartikel (refereegranskat)abstract
- The ozone concentration ([O-3]), temperature (T) and vapour pressure deficit (VPD) during the 2018 heat wave (HW) was compared with conditions from 2013-2017. The study included one coastal and two inland sites in southwest Sweden. The positive relationship between [O-3] and T was stronger in 2018. The average daytime T from April-September was higher by 2.0-2.4 degrees C in 2018. The VPD was strongly and positively affected by the 2018 HW. The daytime mean [O-3] was enhanced by 7-12% in 2018. The relationship between hourly daytime [O-3] and T, as well as that between the daily maximum [O-3] and daily maximum T, was steeper in 2018. The stronger promotion of [O-3] by T in 2018 was possibly partly a result of dry conditions causing stomatal closure of vegetation and thus a weaker O-3 sink. If HWs like that in 2018 become more common, they can be expected to promote higher [O-3] and risk larger health and ecosystem effects.
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| 3. |
- Klingberg, Jenny, 1978, et al.
(författare)
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Observed annual surface ozone maxima and minima in northern and central Europe from 1990–2015 — latitude dependence and temporal trends
- 2019
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Ingår i: Boreal environment research. - 1239-6095. ; 24, s. 201-214
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Tidskriftsartikel (refereegranskat)abstract
- Ground-level ozone is an air pollutant that, despite reductions in precursor emission in Europe, still represents a risk to vegetation and human health. This study is based on observations of ozone concentrations ([O3]) from 25 European monitoring stations, north of the Alps within the EMEP network, during the 26-year period from 1990–2015. We analyzed the maximum and minimum hourly [O3] as well as the seasonal cycle in relation to latitude. In addition, temporal trends were studied. The maximum [O3] increased towards the south of the study area, while the yearly minimum of daytime mean increased towards the north. There was a strong correlation between the day of year when the maximum [O3] occurred and latitude: the maximum [O3] occurred earlier in the north. The maximum daytime [O3] decreased at all stations while the minimum daytime [O3] increased at most stations during the studied time period.
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