Does anybody know of a dataset providing a time-resolved global solar irradiation SPECTRUM for any location in Europe over the course of year?

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Juliane Borchert

The Centre for Renewable Energy Systems Technology (CREST) at the University of Loughborough measures such data. I am not sure if they make it available, but it could be worth asking them. http://www.lboro.ac.uk/research/crest/research/appliedphotovoltaics/solar-resource--pv-performance-monitoring.html

Maxim Guc

Paul, there are some data on the irradiation in the last PV Report http://www.ren21.net/status-of-renewables/global-status-report/, maybe you could find something interesting for you.

Marina Jorge

Maybe this:

http://wrdc.mgo.rssi.ru/