CO2 fluxes and concentrations were simulated in the planetary boundary layer above subarctic hilly terrain using a three dimensional model. The model solves the transport equations in the local scale and includes a vegetation sub-model. A WMO/GAW background concentration measurement site and an ecosystem flux measurement site are located inside the modeled region at a hilltop and above a mixed ...

Launched in August 2005, the Mars Reconnaissance Orbiter (MRO)’s primary goal is to obtain detailed morphologic information on the Martian surface using its onboard HiRISE sensor with a 0.3-meter ground resolution. However, inconsistencies between HiRISE stereo images must be removed based on the rigorous sensor model for the best level of accuracy. The new rigorous sensor model is developed sp...

A brief review of large eddy simulation (LES) applications for different bluff-body flows performed by the author and his co-workers is presented. Examples of flows range from simple cube flows characterized by sharp edge separation over a three-dimensional hill where LES relies on good near-wall resolution, to complex flows of a tall, finite cylinder that contains several flow regimes that cau...

This study explores the use of structure from motion (SfM), a computer vision technique, to model vine canopy structure at a study vineyard in the Texas Hill Country. Using an unmanned aerial vehicle (UAV) and a digital camera, 201 aerial images (nadir and oblique) were collected and used to create a SfM point cloud. All points were classified as ground or non-ground points. Non-ground points, ...

One of the major problems about the chelant-enhanced phytoextraction is the potential metal leaching associated with chelant application. A glasshouse pot experiment was conducted to investigate phytoextraction efficiency of common reed (Phragmites australis (Cav.) Trin. ex Steudel) for Lead and Chromium and to determine EDTA (ethylenediaminetetraacetic acid) enhancement of the mobility and phy...

one of the major problems about the chelant-enhanced phytoextraction is the potential metal leaching associated with chelant application. a glasshouse pot experiment was conducted to investigate phytoextraction efficiency of common reed (phragmites australis (cav.) trin. ex steudel) for lead and chromium and to determine edta (ethylenediaminetetraacetic acid) enhancement of the mobility and phy...

This research was carried out in 2014 and 2015 to assess the effects of salicylic acid (SA)(0 and 1 mM) and abscisic acid (ABA) (0 and 50 µM) on essential oil content and yield ofajowan (Carum copticum L.) organs under different irrigation intervals (I1, I2, I3, I4: irrigationafter 70, 100, 130 and 160 mm evaporation, respectively). Plants were sprayed by SA and ABAat vegetative and reproductiv...