Lennart has joined the Climate Change Litigation Initiative in March 2019 and has since collaborated in the design and implementation of the Initiative. As Legal Analyst he is currently responsible for the preparation of several country reports and coordination with National Rapporteurs. Beyond his collaboration with C2LI, Lennart is a legal trainee at the Landgericht Wiesbaden, and finalizes his PhD project on interactions between the Paris Agreement and other instruments such as domestic litigation concerning mitigation targets. He has been an NGO observer at international climate change conferences in 2013-15, and has published on the topic of climate change litigation. Lennart is also Associate Editor of Carbon & Climate Law Review (CCLR), and speaks fluently German (mother tongue), English and Spanish.