Alemu Gonsamo Gosa
Assistant Professor, Geography & Earth Sciences

My research areas are on ground, airborne, and satellite remote sensing of vegetation from the leaf to the globe with special focus on:

plant structural and photosynthetic traits
land surface and carbon uptake phenology
terrestrial ecosystem primary productivity and greenness
global change impact on terrestrial ecosystem productivity, and
terrestrial carbon cycle modelling

I have done, and am doing, remote sensing of vegetation studies at ecological monitoring sites (e.g., eddy covariance tower networks); on improved product development at regional scale (e.g., leaf area index, primary productivity and land surface phenology); and on global change impact assessment on terrestrial ecosystem productivity at regional (e.g., circumpolar land surface phenology and atmospheric CO2 seasonality) and global scales. Besides remote sensing data, I use ground measurements of plant biophysical variables, photosynthetic traits, atmospheric CO2 concentration, eddy covariance CO2 fluxes and plant phenology; gridded climate data records; terrestrial ecosystem carbon cycle models; and Earth System Model (ESM) outputs.

I develop improved remote sensing methods and products for terrestrial ecosystems relevant to the global change studies. Using satellite remote sensing products, ground observations and mechanistic models, I also study the impacts of climate change and variability on terrestrial ecosystems, and related feedbacks to the atmosphere through carbon cycle.
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