Dr. Oz Kira
Senior lecturer
The Department of Civil and Environmental Engineering
Faculty of Engineering
The Kira Environmental Sensing Lab
The Kira Environmental Sensing Lab uses advanced sensing devices, both in situ and remote, to investigate the environment. Currently, we focus on the urban and agricultural environments.
"The environment is everything that isn't me." Albert Einstein.
Current work
Remote sensing carbon fluxes of urban green infrastructures
The urban population is rapidly increasing, with ~90% of the population predicted to live in cities by 2100. Since urban environments serve as hot spots for greenhouse gas and pollutant emissions, and as the urban areas are destined to become denser, a sustainable urban life requires careful and well-informed urban planning of infrastructures that could adequately mitigate these emissions. A common—albeit debatable—means to achieve this goal is through urban green infrastructures, which are typically considered a net sink for CO2. However, due to the heterogeneous urban land use of these infrastructures, our ability is limited to isolate and accurately quantify their overall impact on the carbon balance of the city. This research combines remote observations and local measurements to both determine the city-level carbon balance of green infrastructures and generate a high-resolution CO2 sequestration map of these infrastructures.
Urban green walls
The urban environment suffers from heat islands and air pollution. Increasing urban vegetation may help increase heat comfort, reduce air pollution, and increase carbon sequestration. Additionally, green walls can be used for urban agriculture and reduce drainage water load. My lab examines all these aspects using a 30m2 green wall site located on the roof of our building. We grow many types of vegetation on the wall, some decorative, and the rest are agricultural (tomatoes, strawberries, green beans, basil, and peppers). We also have a 2m2 chamber to examine heat insolation of green walls.
Reduction of greenhouse gas emissions from cultivated soils
Cultivated soils are the number one source of anthropogenic emissions of Nitrous Oxide (N2O) to the atmosphere. Intensive fertilization in modern agriculture causes an increase in N2O emissions and ammonia (NH3). My lab investigates the impact of environmental conditions on these gaseous emissions and explores new fertilizers and applications to reduce their emission to the environment.
Agricultural monitoring using remote sensing
The growth in the world population demands an increase in food production. One of the tools helping to improve agriculture is remote sensing which improves data accessibility. My lab deals with different aspects of agricultural remote sensing, mainly: plant biophysical traits, agro-ecological carbon fluxes, yield predictions, and plant stress. We use satellite, airborne, and ground systems with advanced machine learning methods to generate high-quality data that can benefit the agricultural community and stakeholders.
After a short postdoctoral period at the Technion IIT, I took my family (wife, six y.o girl, two m.o boy, a dog, and a cat) to Ithaca, NY, for a postdoctoral position at the Sun lab at Cornell University. Three and a half years later, I came to take the position of a faculty member at the Civil and Environmental Engineering at BGU.
My research background started in soil chemistry when I used stable N isotopes to study N soil transformations under the supervision of Prof. Avi Shaviv and Prof. Rafi Linker. My Ph.D., under Prof. Yael Dubowski and Prof. Rafi Linker, dealt with pesticide drift using ground remote sensing. During my postdoc at the Technion, under Prof. Yael Dubowski and Prof. Avi Shaviv, I returned to deal with soil N transformations, concentrating on ammonia and nitrous oxide emissions to the atmosphere. I also dealt with VOC emissions in the sleeping micro-environment.
At Cornell, I started studying solar-induced chlorophyll fluorescence (SIF) remote sensing. I worked on extracting sub-pixel SIF and using SIF for purposes like carbon flux partitioning and yield prediction. In 10/2021 I returned to BGU and started my own lab: the Environmental Sensing Lab.
https://in.bgu.ac.il/Pages/oz-kira.aspx
Office: Building 42, Room 004,
Ben-Gurion University of the Negev,
P.O box 653. Beer Sheva. 8410501. Israel
Phone: 972-74-7795310
Email: ozkira@bgu.ac.il