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 The Royal Swedish Academy of Sciences ( sv, Kungliga Vetenskapsakademien) is one of the Swedish Royal Academies, royal academies of Sweden. Founded on 2 June 1739, it is an independent, non-governmental scientific organization that takes special ...

, 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 Global Lake Ecological Observatory Network (GLEON) is an international grass-roots, voluntary network of researchers, educators, and community groups interested in making and utilizing time series of high-frequency observations made on and in lakes ...

). 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.

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* {{DEFAULTSORT:Weyhenmeyer, Gesa 1969 births Living people Members of the Royal Swedish Academy of Sciences Swedish women scientists 21st-century Swedish scientists 21st-century women scientists Swedish limnologists Women limnologists Academic staff of Uppsala University