Architecture and Environmental Design: Climate and Bioclimatic Design

Weather: Refers to meteorological conditions prevailing at a specific, particular time.
Climate: Statistical data sets derived from weather records taken over a period of many years.
Microclimate: A site-specific climate influenced by factors such as topography, ground cover, vegetation, proximity to water, and building densities.
Essential Elements: Temperature, humidity, precipitation, sky conditions, solar radiation, and wind (velocity and direction).

Nuclear Fusion: Solar radiation is radiant energy produced by the sun via nuclear fusion, creating electromagnetic energy.
Intensity Factors: Varies by geographical location and depends on day length, sun angle (altitude and azimuth), cloud coverage, and atmospheric quality.
Radiation Types: Buildings are affected by direct, diffused, and reflected solar radiation.
Historical Precedence: Notable examples include Newgrange (a $5200$ year-old passage tomb) and the work of Sir John Soane, who utilized space and light in the Bank of England and Dulwich Picture Gallery.

Arid (Hot Dry): Characterized by strong solar radiation, low humidity ( $30-40\%$ inland), and high diurnal temperature ranges ( $10-20\,^\circ C$ ). Design principles emphasize compact urban forms, high thermal mass, wind catchers, and courtyards (e.g., Yazd, Iran).
Tropical (Warm Humid): Characterized by constant high humidity (commonly $100\%$ ), heavy rainfall (over $1000\,mm$ ), and low wind speeds. Design features lightweight open structures, large roof overhangs, and stilts for ventilation and flood protection (e.g., North Thailand, Japan).
Temperate: Divided into Maritime (ocean-influenced) and Continental (inland). Vernacular design uses heavyweight locally sourced materials (e.g.,stone, slate in the UK) to protect against high wind loads and seasonal variations.
Polar (Cold Dry): Characterized by extreme low temperatures (outside as low as $-46\,^\circ C$ ). Traditional strategies include igloos (dry, hard snow blocks), while contemporary designs use high insulation and geothermal heating (e.g., Hof Residence, Iceland).

Change Factors: Anthropogenic causes include deforestation, vehicle emissions, industry, and the increase of Greenhouse Gases (GHG) like $CO_2$ , $CH_4$ , and $N_2O$ .
Greenhouse Effect: Human activity results in less heat escaping into space and more re-emitted heat within the atmosphere.
Sector Statistics: Buildings are responsible for $40\%$ of energy consumption and $36\%$ of $CO_2$ emissions in Europe. Globally, $36\%$ of energy is devoted to buildings, with cement alone causing $8\%$ of emissions.
UK Energy Breakdown: $70\%$ of energy use is for heating, $19\%$ for cooling, $7\%$ for hot water, and $4\%$ for lighting. Approximately $80\%$ of buildings in UK cities today will still exist in $2050$ .

Reflection and Glare: Examples like the Walkie-Talkie building illustrate the danger of reflected light melting external objects (e.g., Jaguar car parts).
Aerodynamic Design: Curved shapes like 30 St Mary Axe (The Gherkin) reduce downdrafts and improve ground-level microclimates compared to flat-fronted buildings.
Mitigation Measures: Implementation of entrance canopies, baffles, wind screens, planting, and landscaping helps manage turbulence and airflow around high-rise structures.

The lecture concluded with a session dedicated to audience questions and discussion regarding climate implications in architectural design.