German
Longitudinal
Environmental
Study

GLEN is a Germany-wide long-term study on environmental and climate issues. Several times a year, adults from all over Germany are surveyed to track how opinions, attitudes, and behaviors change over time. In this way, GLEN creates a valuable data source for research while also offering exciting insights for anyone else interested in our climate data.

For Interested Readers

For Researchers

German
Longitudinal
Environmental
Study

GLEN is a Germany-wide long-term study on environmental and climate issues. Several times a year, adults from all over Germany are surveyed to track how opinions, attitudes, and behaviors change over time. In this way, GLEN creates a valuable data source for research while also offering exciting insights for anyone else interested in our climate data.

For Interested Readers

For Researchers

For Interested Readers

For Researchers

Latest News

The first GLEN data are now available!

You can access the data via GESIS here:

GLEN Release 1.0

The new Call for Open Module Submissions is now online!

From now until 15.07.2026 we are accepting submissions for open modules.
If you are interested you can find out more here.

Read More

A little insight

85%

of those surveyed support measures
to address extreme weather events

16%

of those surveyed consider evidence of
climate change to be unconvincing

Collaborative project

GLEN is a collaborative project between the LMU Munich, the RPTU Kaiserslautern, Heidelberg University and the University of Konstanz.