The potential for reducing urban air temperatures and energy consumption through vegetative cooling

TitleThe potential for reducing urban air temperatures and energy consumption through vegetative cooling
Publication TypeReport
LBNL Report NumberLBL-35320
Year of Publication1994
AuthorsKurn, Dan M., Sarah E. Bretz, Benson Huang, and Hashem Akbari
Date Published05/1994
Other NumbersUC-1600
Abstract

A network of 23 weather stations was used to detect existing oases in Southern California. Four stations, separated from one another by 15 - 25 miles (24 - 40 km), were closely examined. Data were strongly affected by the distance of the stations from the Pacific Ocean. This and other city-scale effects made the network inadequate for detection of urban oases. We also conducted traverse measurements of temperature and humidity in the Whittier Narrows Recreation Area in Los Angeies County on Sept. 8-10, 1993. Near-surface air temperatures over vegetated areas were 1 - 2 °C lower than background air temperatures. We estimate that vegetation may lower urban temperatures by 1 °C, while the establishment of vegetative canopies may lower local temperatures by an additional 2 °C. An increase in vegetation in residential neighborhoods may reduce peak loads in the Los Angeles area by 0.3 GW, and reduce energy consumption by 0.2 BkWh/year, saving $20 million annually. Large additional savings would result from regional cooling.

Notes

Added to JabRef: 2010.04.21

URLhttp://dx.doi.org/10.2172/10180633
DOIdoi:10.2172/10180633
AttachmentSize
PDF1.76 MB