English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The aerosol distribution in Europe was simulated with the CommunityMultiscale Air Quality (CMAQ) model system version 4.5 for the years 2000 and 2001.The results were compared with daily averages of PM<sub>10</sub> measurements takenin the framework of EMEP and with aerosol optical depth (AOD) values measuredwithin AERONET. The modelled total aerosol mass is typically about 30–60%lower than the corresponding measurements. However a comparison of the chemicalcomposition of the aerosol revealed a considerably better agreement between themodelled and the measured aerosol components for ammonium, nitrate and sulfate,which are on average only 15–20% underestimated. Sligthly worse agreementwas determined for sea salt, that was only avaliable at two sites. The largestdiscrepancies result from the aerosol mass which was not chemically specifiedby the measurements. The agreement between measurements and model is better inwinter than in summer. The modelled organic aerosol mass is higher in summerthan in winter but it is significantly  underestimated by the model. Thiscould be one of the main reasons for the discrepancies between measurements and modelresults. The other is that primary coarse particles are underestimated in the emissions.The probability distribution function of the PM<sub>10</sub> measurements followsa log-normal distribution at most sites. The model is only able to reproducethis distribution function at non-coastal low altitude stations.The AOD derived from the model results is 20–70% lower than the valuesobserved within AERONET. This is mainly attributed to the missing aerosolmass in the model. The day-to-day variability of the AOD and the log-normaldistribution functions are quite well reproduced by the model. The seasonalityon the other hand is underestimated by the model results because better agreementis achieved in winter

atmospheric chemistry and physics

The aerosol distribution in Europe derived with the Community Multiscale Air Quality (CMAQ) model: comparison to near surface in situ and sunphotometer measurements