- an increase in the earth’s average atmospheric temperature that causes corresponding changes in climate and that may result from the greenhouse effect.
- an increase in the average temperature worldwide believed to be caused by the greenhouse effect
by 1983 as the name for a condition of overall rising temperatures and attendant consequences as a result of human activity. Originally theoretical, popularized as a reality from 1989.
- An increase in the average temperature of the Earth’s atmosphere, especially a sustained increase great enough to cause changes in the global climate. The Earth has experienced numerous episodes of global warming through its history, and currently appears to be undergoing such warming. The present warming is generally attributed to an increase in the greenhouse effect , brought about by increased levels of greenhouse gases, largely due to the effects of human industry and agriculture. Expected long-term effects of current global warming are rising sea levels, flooding, melting of polar ice caps and glaciers, fluctuations in temperature and precipitation, more frequent and stronger El Niños and La Niñas, drought, heat waves, and forest fires. See more at greenhouse effect.
The term attached to the notion that the‘s temperature is increasing due to the .