Climate change is a change in the statistical distribution of weather patterns when that change lasts for an extended period of time (i.e., decades to millions of years). Climate change may refer to a change in average weather conditions, or in the time variation of weather around longer-term average conditions (i.e., more or fewer extreme weather events). Climate change is caused by factors such as biotic processes, variations in solar radiation received by Earth, plate tectonics, and volcanic eruptions. Certain human activities have also been identified as significant causes of recent climate change, often referred to as global warming.
Scientists actively work to understand past and future climate by using observations and theoretical models. A climate record—extending deep into the Earth's past—has been assembled, and continues to be built up, based on geological evidence from borehole temperature profiles, cores removed from deep accumulations of ice, floral and faunal records, glacial and periglacial processes, stable-isotope and other analyses of sediment layers, and records of past sea levels. More recent data are provided by the instrumental record. General circulation models, based on the physical sciences, are often used in theoretical approaches to match past climate data, make future projections, and link causes and effects in climate change.
This topic looks at evidence of climate change, contributing factors, initiatives to limit climate change and opinions on climate change.
The end of the year is nigh and it's a time for Christmas and New Year parties and gatherings. In the southern hemisphere that means barbecues and beaches. In the northern hemisphere it's mulled wine and cosy fireplaces.
How to Talk to a Climate Skeptic: Responses to the most common skeptical arguments on global warming
Below is a complete listing of the articles in "How to Talk to a Climate Skeptic," a series by Coby Beck containing responses to the most common skeptical arguments on global warming. There are four separate taxonomies; arguments are divided ...
A new model simulation of the Gulf Stream System shows a breakdown of the gigantic overturning circulating in the Atlantic after a CO2 doubling. A new study in Science Advances by Wei Liu and colleagues at the Scripps Institution of Oceanography in San Diego and the University of Wisconsin-Madison has important implications for the future stability of the overturning circulation in the Atlantic Ocean.
This page introduces what climate change is, the potential impacts and resistance to the otherwise accepted understanding that it is man-made climate change.
Coral bleaching to hit reefs every year from mid-century, says UN | Climate Home - climate change news
Report finds that even if pledges to Paris agreement are exceeded, most coral reefs worldwide will be bleached every year by 2070 Three-quarters of the world's coral reefs will be exposed to intolerable heat by 2070, even if international pledges on emissions reductions are exceeded, according to a UN-sponsored report.