This discussion paper is/has been under review for the journal Geoscientific Model Development (GMD). Please refer to the corresponding final paper in GMD if available. Abstract Cities impact both local climate, through urban heat islands, and global climate, because they are an area of heavy greenhouse gas release into the atmosphere due to heating, air conditioning and traffic. Including more...

Street trees are an important driver of street microclimate through shading and transpirative cooling, which key mechanisms for improving thermal comfort in urban areas. Urban canopy models (UCM) with integrated useful tools because they represent the impacts on neighborhood-scale climate, resolving interactions between buildings, atmosphere. In this study, we present results a measurement camp...

This study conducted large-eddy simulations (LES) on the pollutant reduction effects of hedge and solid barriers in a three-dimensional idealized street canyon with an aspect ratio 0.5. The wind direction was perpendicular oblique (45°) to street. results were validated data from tunnel experiments. LES accurately predicted concentration distribution barrier-free case reproduced well barrier-in...

This research explores the correlation between ‘walkability’ and the ‘sense of place’ in Tehran’s streets, particularly streets leading to the Imam Khomeini square (Maidan-e Tup-khana) at the heart of historic downtown. The goal is to evaluate the walkability through a measurable method in order to prioritize strategies to enhance various aspects of the historic districts. After reviewing the e...

In recent years many transformations have occurred in Iranian society and women and girls still have a lot of worries about comes to urban public spaces. Also, due to some ambiguities in defining the domain of public space in traditional Islamic cities and gaps in the knowledge related to the Kurdish cities, the main problem of this paper is how we can define a participatory approach to improve...

Heat removal from street canyons to the urban boundary layer above buildings is one of physical processes that may largely determine (local) heat island (UHI) effects. Only few studies show impact a buoyant approaching flow on removal. In this study, we enhanced when more as induced by upwind convective heating heated ground surface. For purpose, perform simultaneous velocity and temperature fi...

Realistic spatial channel models are essential for development of future wideband mobile communication systems, particularly when adaptive antennas at the base stations are considered. Channel models are prerequisite for the performance evaluation of different adaptive antenna solutions and estimation of the obtained capacity gain. Realistic models require channel measurements to prove their as...