Starting our last campaign days with a sunny morning and measurement opportunity in #London #Rome and #Berlin @IYL2015 LIGHT2015

Patches of blue in #Athens and some clouds but clearing up in #Bari. EUMETSAT #msg eumetview.eumetsat.int/mapviewer/ just now:

Very clear sky over Utrecht, the #Netherlands. How is your sky this evening? #citizenscience ispex-eu.org/ispex-eu-campa…

Last 2 days of the campaign, last days to measure your cloud-free sky! LIGHT2015 @IYL2015 #citizenscience

Another lovely clear morning for iSPEX-EU measurements! Great blue sky in West London - let us know if you manage to get some readings!

Last days of iSPEX-EU campaign, let's make a last effort! #PhotonicsPPP

Rainy last campaign day in #Rome. Patches of blue sky in #Athens #Bari #London #Manchester —we are counting on you!

Our campaign is ending today. Add your measurements on the map! ispex-eu.org/ispex-eu-campa… @IYL2015

Cloudy but promising skies for our last campaign day in Frascati #Rome. How is your sky condition today? ESA_Italia

iSPEX-EU anche qui CNR - ARTOV il cielo è coperto...Poche ore ancora per le misure! x.com/ispex_eu/statu…

Our campaign has ended. Many thanks to all participants! Over the next weeks we will process all data gathered. Stay tuned for the results!

Wish to do more measurements? Your are still welcome to! All September and October data will be taken along to produce maps for each city.

Measuring aerosols in New Delhi at IIT using iSPEX and Calitoo. Cloud free skies, but hot and hazy.

PhotonicsEU Photonics21 European Physical Society (EPS) x ICFO EYESTvzw iSPEX-EU GoPhoton! Photonics4All John Dudley x.com/Light2015Europ…

Thousands of people around EU measured air pollution using smartphones thanks to the iSPEX-EU campaign europe.light2015.org/Home/Activitie… #ICT2015

Many thanks to all of you who have contributed to the iSPEX-EU campaign!! ispex-eu.org/campaign-end-a…

Showing now: x.com/CloudGapSpotte…

Read an article about the iSPEX-EU campaign in Barcelona, Spain redcedarnews.wordpress.com/2015/11/13/eur… ICFO ISGlobal #PhotonicsPPP