Horizontal visibility across Switzerland between 1980 and 2018

• Unité de recherche: OFEV
• Numéro de projet: ExSt.2020.1102

Mots-clé (Allemand)

Luft, Studien

Mots-clé (Anglais)

Air, Studies

Mots-clé (Français)

Air, Études

Mots-clé (Italien)

Aria, Studi

Description succincte (Anglais)

Visibility observations from 11 sites across Switzerland between 1980 and 2018 were analysed alongside surface meteorological and air quality data. The results indicated that mean visibility is significantly increasing across most of Switzerland at rates between 64 and 440 meters per year. Additionally, the occurrence of “low visibility days” are decreasing significantly, while extremely clear conditions are significantly increasing in most locations.

Documents annexés

• Horizontal visibility across Switzerland between 1980 and 2018 [PDF] 2'172 kB

Mandataire (Anglais)

Empa, Dübendorf

Budget imputé (Anglais)

BAFU

Bases légales (Anglais)

Art. 57 Abs. 1 RVOG | Art. 57 al. 1 LOGA. | Art. 57 cpv. 1 LOGA

Droits d'auteur (Anglais)

Copyright, Bundesbehörden der Schweizerischen Eidgenossenschaft | Droits d'auteur: autorités de la Confédération suisse | Diritti d'autore: autorità della Confederazione Svizzera | Dretgs d'autur: autoritads da la Confederaziun svizra | Copyright, Swiss federal authorities

Renseignements (Anglais)

BAFU, Abteilung Luftreinhaltung und Chemikalien, 3003 Bern