Biosphere-Atmosphere Gas Exchange & Atmospheric Chemistry Group
Keywords: Photochemical air pollution, atmospheric chemistry modeling, eddy covariance, ozone, BVOCs,
vegetation, seawater, evapotranspiration, micrometeorology
We use field measurements and atmospheric modeling to quantify ecosystem–atmosphere exchange of ozone, volatile organic compounds (VOCs), water vapor, and carbon oxides. Our research combines eddy covariance, gradient and branch-enclosure techniques with atmospheric chemistry and weather research and forecasting models to better understand how vegetation influences air quality, climate, and the hydrological cycle. Our work focuses on the following research themes:
Research topics
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Chemical mechanisms of ozone dry deposition Impacts of biogenic volatile organic compound (BVOC) emissions from terrestrial vegetation and the marine environment on local and regional photochemical air pollution
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Development of chemical mechanisms describing interactions between BVOCs and anthropogenic pollution Environmental controls on BVOC emissions
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Development of methods for improved regional- and national-scale evapotranspiration prediction using atmospheric models
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Prediction of evapotranspiration in greenhouses using ambient meteorological measurements
The role of forests and shrublands in regulating air pollution and climate through gas exchange
Optimizing the use of urban vegetation to improve local air quality and thermal comfort
Predicting evapotranspiration across ecosystems using atmospheric models
Other topics of interest
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Emission of halocarbons from various landscapes
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Reactive halogen species - photochemical air pollution interactions
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Chemical mechanisms of atmospheric mercury oxidation
Dr. Eran Tas
Institute of Environmental Sciences
(Soil and Water Sciences)
Office +972-(0)8-948-9139
Eddy Covariance ozone, carbon dioxide and water vapor flux measurements over a Cicer arietinum (chickpea) field. Ozone fluxes were partitioned using the electric circuit analogy (Li et al., STOTEN, 2018, 2019)
Eddy covariance measurements over various canopies in Israel to study the mechanisms of ozone deposition to vegetation and the potential effect of biogenic organic compounds on photochemical air pollution (Li et al., STOTEN, 2018, 2019, Dayan et al, ACP, 2020).
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Gradient measurements of halocarbons fluxes (destroy stratospheric and tropospheric ozone), under various landscapes at the Dead Sea (Shechner et al., ACP, 2019)
We use enclosure systems combined with GC-MS techniques to study the composition of emitted biogenic volatile organic compounds and the effect of environmental conditions on their emission rate
Combining the WRF model with a network of meteorological stations can be synergistic in evapotranspiration prediction (Bughici et al., 201)
Chemical mechanisms were developed to simulate the effects of transportation on photochemical air pollution (Gabay and Tas, 2019) and the interaction of biogenic volatile organic compounds with anthropogenic pollution
Atmospheric chemistry modeling and literature review strongly support the dominant role of photochemical air pollution on atmospheric mercury oxidation in the polluted marine and continental boundary layer (Gabay et al., 2020)
Atmospheric chemistry modeling based on field measurements points out that reactive halogen species can lead to ozone formation in the polluted marine boundary layer, including coastal areas (Shechner and Tas., 2017)
