Trends in Ambient O3 Concentrations at Twelve Sites in the Czech Republic over the Past Three decades: Close Inspection of Development

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985807%3A_____%2F20%3A00531765" target="_blank" >RIV/67985807:_____/20:00531765 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11310/20:10420761 RIV/75010330:_____/20:00013271 RIV/00020699:_____/20:N0000040

Result on the web

<a href="http://dx.doi.org/10.1016/j.scitotenv.2020.141038" target="_blank" >http://dx.doi.org/10.1016/j.scitotenv.2020.141038</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.scitotenv.2020.141038" target="_blank" >10.1016/j.scitotenv.2020.141038</a>

Result language

angličtina

Original language name

Trends in Ambient O3 Concentrations at Twelve Sites in the Czech Republic over the Past Three decades: Close Inspection of Development

Original language description

Ambient or ground-level ozone (O3), a key player in atmospheric chemistry, has been studied extensively throughout the world in recent decades due to its harmful effects on human health and the environment. The aim of this study is to examine in detail the time patterns of O3 in the Czech Republic, a Central European country with a long–term history of ambient air pollution. We have examined the interplay between annual trends and within-a-year seasonality in daily O3 concentrations at twelve stations representing different environments, geographical regions and altitudes in the Czech Republic in 1993–2018. We base our analysis on a generalised additive model (GAM) framework as a modern regression approach suitable for addressing non-linear trend shapes in a formalised and unified way. In particular, we use penalised splines. The inconsistent behaviour of the stations prior to 1998, two local maxima around 2003 and 2006 and a steady increase in O3 at all sites from 2014 to the present are the main features of our study. A seasonality O3 pattern with a clear maximum in May–June is similar for all stations. In parallel with the O3 concentration changes over the years, the deformation of seasonality profiles over a long period of time occurs, resulting in a shift of the peak O3 concentrations towards later days in the year. Our statistical modelling offers a detailed view of both long-term trend and seasonality components separately. Additionally, in a model with trend*seasonality interaction, we are able to study the gradual deformation of the seasonality profile over the years. Capsule: Our analysis of daily mean O3 concentrations at twelve Czech sites in 1993–2018 revealed a steady increase in O3 from 2014 and deformation of the seasonality O3 profiles over the year.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10103 - Statistics and probability

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Science of the Total Environment

ISSN

0048-9697

e-ISSN

—

Volume of the periodical

746

Issue of the periodical within the volume

1 December

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

11

Pages from-to

141038

UT code for WoS article

000579371300033

EID of the result in the Scopus database

2-s2.0-85088924122