Learn more about Eurobarometer tools:

Eurobarometer surveys are managed by the Public Opinion Analysis Sector of the European Commission, Directorate General Communication: 

Standard Eurobarometer surveys, launched in 1973, have been designed to provide a regular monitoring of the social and political attitudes of the European citizens. The methodology used is face-to-face interviews (approximately 1000 per country). These surveys include a number of standard questions testing citizens’ attitudes to and perceptions of the EU and its institutions.  The surveys are conducted in spring and autumn of each year.
http://www.ec.europa.eu/public_opinion/standard_en.htm

Special Eurobarometer surveys are carried out at the request of the different Directorate-Generals of the European Commission. The same methodology as for Standard Eurobarometer is used.
http://www.ec.europa.eu/public_opinion/archives/eb_special_en.htm

Flash Eurobarometer surveys are carried out via telephone interviews and exclusively contain a survey with one topic or by a single DG and scheduled ad hoc or by request. The surveys are conducted through telephone interviews in all EU member states, candidate countries, EFTA countries and the USA. The results are available quickly and the instrument makes it possible to conduct researches among special target groups as well as a general public.
http://www.ec.europa.eu/public_opinion/archives/flash_arch_en.htm

Qualitative studies are a special tool for in-depth opinion research. The qualitative studies investigate in-depth the attitudes, motivations, feelings, reactions of the general public or of selected social groups towards given subjects or concepts. Data is collected through using focus groups or by way of individual interviews
http://www.ec.europa.eu/public_opinion/quali_en.htm

I. Post-referenda surveys (Flash EB):

1. Post-referendum survey in Ireland
http://www.ec.europa.eu/public_opinion/flash/fl_245_full_en.pdf

2. Post-referendum survey in Luxembourg
http://www.ec.europa.eu/public_opinion/flash/fl173_postref_lu_en.pdf

3. Post-referendum survey in the Netherlands
http://www.ec.europa.eu/public_opinion/flash/fl172_en.pdf

4. Post-referendum survey in France
http://www.ec.europa.eu/public_opinion/flash/fl171_en.pdf

5. Post-referendum survey in Spain
http://www.ec.europa.eu/public_opinion/flash/fl_168_en.pdf

II. The 2009 European elections (Special EB)

http://www.ec.europa.eu/public_opinion/archives/ebs/ebs_299_en.pdf

Country fishes:
http://www.ec.europa.eu/public_opinion/archives/eb_special_en.htm

III. EU communication and the citizens (Flash EB)

Policy makers report
http://www.ec.europa.eu/public_opinion/flash/fl_189b_en.pdf

General public survey
http://www.ec.europa.eu/public_opinion/flash/fl_189a_en.pdf

IV. Young Europeans (Flash EB)

http://www.ec.europa.eu/public_opinion/flash/fl_202_en.pdf