Gesa Weyhenmeyer

Gesa A. Weyhenmeyer (born 1969) is a Swedish limnologist who is working as a professor and distinguished teacher at Uppsala University in Sweden. She is a member of the Royal Swedish Academy of Sciences, and known for her pioneering research on the role and response of lake ecosystems in the Earth's climate system. Her research requires a holistic and global perspective, for which she collaborates with members of the Global Lake Ecological Observatory Network (GLEON). In addition to GLEON, Weyhenmeyer is actively engaged in the Intergovernmental Panel on Climate Change (IPCC), both as official reviewer and contributing author.

Apart from developing new concepts in the field of global limnology, bridging together biology with geosciences, physics, chemistry, sensor technology and data science, Weyhenmeyer has a passion to communicate research to students, policy-makers, stakeholders and society in general. In 2016, she performed, for example, a citizen scientist project with the involvement of nearly 3,500 schoolchildren. The results of the project led to a new climate change related scientific discovery which was recognized by a large variety of national and international media. In December 2020, Weyhenmeyer and scientist Will Steffen initiated an open letter in the Guardian calling for human civilization to prepare for the possibility of collapse within the 21st century in light of the impending failure to implement timely climate actions.