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Dr. Josh Hashemi

Matthias Zeeman

Dr. Josh Hashemi
Post-doctoral researcher

Werthmannstrasse 10
79085 Freiburg
Room -1.014

Phone +49 761 203 3589
ORCiD 0000-0002-8660-7406


Josh Hashemi studied Biology with a focus in plant ecophysiology and restoration ecology at Kennesaw State University (B.Sc.). He attended the University of California in Davis for his PhD in Ecology from 2017-2022 studying greenhouse gas (CO2, CH4, and N2O) exchange dynamics in pristine Arctic tundra. He completed his dissertation, entitled “Variability in Greenhouse Gas Dynamics due to Spatial Heterogeneity and Seasonality in Alaskan Arctic Coastal Wetlands” in 2022. He began research as a post-doc at the Chair of Environmental Meteorology, University of Freiburg in May, 2022.


Currently, his research examines greenhouse gas exchange as part of the Pilot Applications in Urban Landscapes (PAUL) project. Specifically, his focus involves using eddy covariance towers to take measurements of ratios of CO2 fluxes to fluxes of co-emitted species (e.g. NOx, CO, COS) to examine the relative contribution of different sectors (traffic, residential, biogenic etc.) in urban landscapes. Additionally, his research involves partitioning CO2 emissions into fossil fuel CO2 (ffCO2) and biogenic CO2 using a combination of eddy covariance data and measurements of radiocarbon (14C).

Current Research Projects


Articles in peer-reviewed journals