Climate Change

Climate change refers to the change in measures of climate lasting for an extended period of time, such as changes in temperature, and precipitation.  Climate is influenced by its own internal dynamics, and by changes in external factors, both natural and human–induced. Solar radiation and volcanic eruptions are natural factors, while changes in the composition of the atmosphere resulting from greenhouse gases or aerosols are human-induced factors.

Indicators of Climate Change in California

The Office of Environmental Health Hazard Assessment researches and presents indicators in periodic reports describing how California’s climate is changing and how these changes are affecting the state. Indicators are scientifically-based measurements that track trends in various aspects of climate change.

Human Health Impacts of Climate Change

OEHHA focuses on human health studies relating increased temperatures to adverse health outcomes such as death and illness including hospital visits, emergency room visits, and birth defects. OEHHA has contributed to the growing body of literature linking deleterious health effects to increasing temperatures and heat waves. These studies have helped identify groups who are vulnerable to heat-related mortality and illness.

Annotated Bibliography: Recent Research on Climate Change in California

OEHHA has compiled information relevant to climate change and its impacts in an annotated bibliography with an emphasis on California. This annotated bibliography is intended as a source of current and emerging scientific information on climate change for environmental and public health agencies, the research community, non-government organizations, and the public.

Reports, Notices, Documents

Jun 17, 2015: Workshop on Indicators of Climate Change in California
OEHHA convened a workshop to improve upon and explore new metrics for tracking climate change and its impacts on California’s water resources, oceans, fish and wildlife, forests, agriculture, and the health and well-being of the state’s residents. 
Aug 8, 2013: 2013 Report: Indicators of Climate Change in California
"Indicators of Climate Change in California," a 2013 report presenting 36 indicators tracking trends in atmospheric gases that influence climate, changes in the state's climate, and the impacts of climate change on California's environment and people.
Apr 17, 2009: 2009 Report: Indicators of Climate Change in California
This 2009 report identifies 27 indicators that measure the impact of climate change on the state’s temperatures, precipitation, land, water, people, plants, and animals. It concludes that changes in California are consistent with those occurring globally. The report is a meta-analysis of existing research.