During the last century, urban pollution has increased with the growth of cities. Urban air quality has become a high priority as it is directly linked to concerns such as human exposure and health. The present work is dedicated to urban air quality modeling with focus on urban meteorology. The main goal is to improve meteorological and air quality simulations in urban areas. Based on measureme...

extended abstract 1. introduction today the irregular growth of the population and its illogical distribution across natural and cultural environments of different communities has necessitated sustainable development in response to the unstable conditions of cities. mashhad is a city with fast growth and development but with no clear plan, especially after land reform program. in this sense, th...

there are different studies in urban literature on the determinants of urban growth, from the theoretical and empirical points of view. the most completed theoretical model is henderson model (1988, 1997, and 1999), which is tested by some empirical studies. as henderson model shows, the set of national product, specialization and technological progress are the determinants of urban growth. usi...

natural climatic conditions in urban areas can be changed by human physical environment. climate as a natural system and city as a human system have close mutual connections. urban population growth and consequent increase in urban physical expansion may lead to intensification in human activities and disturbances in the environment. this contributes to alterations in solar radiation, balance o...

The approach of this study was to determine, theoretically, what impact current and future urban land use in the coastal city of Houston, Texas has on the space and time evolution of precipitation on a `typical' summer day. Regional model simulations of a case study for 25 July 2001 were applied to investigate possible effects of urban land cover on precipitation development. Simulations in whi...

Dispersion of releases in urban areas can be estimated with information on micrometeorological variables in the urban boundary layer. However, this information is not generally available. On the other hand, meteorological measurements are routinely made in rural surroundings (e.g. airports). We examine empirical relationships between urban and rural meteorological variables using data from the ...

The present paper focuses on determining the most important factors affecting urban growth in large cities of Iran through modeling and comparing the common and diverse points of urban growth obtained from other studies. For this purpose, by reviewing the theoretical concepts associated with urban growth, quantities and measurable variables are developed as proper frameworks to study the influe...

a benchmarking of policy instruments and experiences for improving farmland preservation in urban fringes of iran1. amir safaee, ph.d. candidate in environmental planning, faculty of environment, university of tehran, tehran- [email protected]. shahrzad faryadi*, associated professor, department of environmental planning and management, faculty of environment, university of tehran, tehran-...

Originellement basé sur l’ingestion de fourrages par les herbivores et extension leurs besoins énergétiques, le concept d'Unité Gros Bétail (UGB) est largement utilisé, sans être toujours précisément défini, pour décrire évaluer systèmes d'élevage ou calculer des statistiques. Cependant, calcul la valeur UGB d'un animal donné peut considéré comme très frustre dans mesure où il ne tient compte n...