Greinis
Greinis is a fictional composite index used in discussions of urban greenness and sustainability. It is designed to provide a single score that reflects how green and environmentally integrated an urban area is, by aggregating several underlying indicators into a unified measure.
Components typically include vegetation cover, urban heat island mitigation, air and water quality, biodiversity, energy efficiency,
Calculation commonly follows a form such as Greinis = sum w_i * s_i, where s_i is the standardized
Data sources for Greinis may include satellite imagery for vegetation, air quality monitors, municipal records, traffic
Applications of the index include comparing neighborhoods or cities, tracking progress over time, and informing policy
Limitations and critiques highlight sensitivity to data availability and to the choice of indicators and weights,
History and status: The concept was introduced in hypothetical academic discussions around 2010–2015 as a teaching