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Urban microclimate refers to the localized climate conditions within urban areas, which are significantly influenced by human activities and the built environment, leading to variations in temperature, humidity, and wind patterns compared to surrounding rural areas. Understanding these variations is crucial for urban planning, public health, and environmental sustainability, as they affect energy consumption, air quality, and the comfort of urban dwellers.
The urban heat island effect describes the phenomenon where urban areas experience higher temperatures than their rural surroundings due to human activities and modifications of land surfaces. This effect is primarily caused by the absorption and retention of heat by buildings and infrastructure, reduced vegetation, and waste heat generated by energy use in cities.
Thermal comfort is the condition of mind that expresses satisfaction with the thermal environment, influenced by a range of environmental and personal factors. Achieving Thermal comfort involves balancing heat gains and losses to maintain a stable core body temperature, accommodating individual preferences and external conditions.
The Air Quality Index (AQI) is a standardized system used to measure and communicate the quality of air in a specific area, indicating how polluted the air currently is or how polluted it is forecast to become. It helps the public understand what local air quality means to their health, with higher values indicating greater levels of air pollution and a higher potential for adverse health effects.
Green Infrastructure refers to a network of natural and semi-natural systems that provide ecosystem services, such as water management, air quality improvement, and biodiversity support, while enhancing urban resilience and quality of life. It integrates nature-based solutions into urban planning and development to create sustainable, livable environments that adapt to climate change impacts.
Solar radiation is the electromagnetic energy emitted by the sun, which reaches Earth and influences the planet's climate and weather systems. It is a critical driver of natural processes and human technologies, such as photosynthesis and solar power generation.
Surface albedo is the measure of the reflectivity of a surface, indicating how much sunlight is reflected by the surface back into the atmosphere. It plays a crucial role in Earth's energy balance and climate system by affecting temperature and weather patterns.
Energy balance is the state where the calories consumed through food and drink are equal to the calories expended through basal metabolic rate and physical activity. Achieving Energy balance is crucial for maintaining a stable body weight and overall health.
The Urban Canyon Effect refers to the phenomenon where tall buildings in urban areas create narrow corridors that can significantly alter local environmental conditions, such as wind flow, temperature, and light exposure. This effect can impact urban planning, architecture, and public health by influencing air quality, pedestrian comfort, and energy consumption in cities.
Microclimate variation refers to the small-scale weather variations occurring in specific areas that differ from the surrounding general climate, caused by factors such as topography, vegetation, water bodies, and human structures. Understanding these variations is crucial for agriculture, urban planning, and biodiversity conservation as they can influence temperature, humidity, wind patterns, and precipitation levels in localized regions.
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