The fate of the terrestrial biosphere

Department of Hydrology and Atmospheric Sciences
4 pm on Thursday, April 21, 2022
Available via zoom
Contact the department for zoom details or to subscribe to the email list
Joshua B. Fisher
Presidential Fellow of Ecosystem Science, Chapman University


One of the largest uncertainties of the future of the Earth is how the terrestrial biosphere will counteract or exacerbate the rise in CO2. Ecosystems can both absorb carbon (i.e., photosynthesis) and emit it (i.e., respiration, decomposition, combustion). Whether or not they absorb or emit carbon depends on water, temperature, nutrients, and other factors. Here, Dr. Joshua Fisher will discuss how satellite and airborne remote sensing in conjunction with climate models are used to understand how Earth’s terrestrial water, carbon, and nutrient cycles are linked and impact the Earth system as a whole, highlighting new insights into the behavior and understanding of the terrestrial biosphere in a changing climate.


Dr. Joshua B. Fisher is a Climate Scientist focusing on terrestrial ecosystems, water, carbon, and nutrient cycling using a combination of supercomputer models, remote sensing, and field campaigns from the Amazon to the Arctic. He completed his undergraduate and graduate degrees at UC Berkeley and his postdoctoral work at the University of Oxford. Fisher was at NASA’s Jet Propulsion Laboratory (JPL) for over a decade and was the Science Lead for the ECOSTRESS mission, focused on plant water use/stress from the International Space Station. Dr. Fisher is currently Presidential Fellow of Ecosystem Science on the faculty at Chapman University and is also now the Science Lead for Hydrosat, which is launching a constellation of thermal satellite missions. He has been named one of the world’s “most influential” researchers, in the top 0.1% of scientists with papers in the top 1% by citations for the past 4 years in a row.