Roof Albedo Map Los Angeles

The albedo effect has been proven in both natural and man made environments in recent years.

Roof albedo map los angeles.

Albedo is the fraction of sunlight that is reflected from a surface. White roofs could be painted on every roof in the city in order to immensely increase the overall albedo of the region. In each city nearly all roofs have low albedo in the range of 0 05 0 25 panel b fig. This map contains four different types of data.

We have been leaders for decades in developing energy efficient windows improving indoor air quality coming up with new ideas to fix the nation s electricity grid and so much more. In nature white sea ice melting into the dark blue ocean in cities formerly green enviroments being covered with pavement and skyscrapers with black rooftops in cities the earth is slowly being covered. Fire origins mark the fire fighter s best guess of where the fire started. Reflective roofs are more energy efficient and cooler inside and out.

Los angeles for example recently implemented an ordinance that requires all new or refurbished residential buildings to be equipped with cool roofs. Albedo is the reflecting power of a surface. For our study we will use images taken of california in 2009 by the national agriculture. The data is provided by calfire.

The potential dividends of the ordinance are illustrated by the swaths of red and orange roofs indicating low albedo roofs in the los angeles portion of the map. Similar to the concept of increasing the albedo of city pavements white roofs have the potential to cool the atmosphere of los angeles by reflecting more sunlight back into space instead of absorbing it during the day and. The california roof albedo project sponsored by the california air resources board aims to improve measurements of solar reflectance throughout california using high resolution aerial imagery to measure reflectance of visible and near ir radiation. Find local businesses view maps and get driving directions in google maps.

It is measured on a scale of 0 to 1 where higher numbers indicate greater reflectance. This map displays roof albedo solar reflectance estimates from berkeley lab for los angeles.