How global warming affects astronomical observations

The quality of ground-based astronomical observations delicately depends on the clarity of the atmosphere above the location from which they are made. Sites for telescopes are therefore very carefully selected. They are often ...

Wildfire smoke is unraveling decades of air quality gains

Wildfire smoke now exposes millions of Americans each year to dangerous levels of fine particulate matter, lofting enough soot across parts of the West in recent years to erase much of the air quality gains made over the ...

New chemistry happens when dust meets pollution

It is a new chemistry found to take place in a cloud droplet, a wet aerosol, or on the surface of a dust particle. All that it takes to get started is natural events like dust storms, ocean wave action, volcanic eruptions, ...

Researchers develop a new way to predict droughts

Scientists looking at the meteorological impacts of climate change have typically looked at increases in severe weather and hurricanes. Now, they are studying another consequence of global warming that will have significant ...

Tropical insects are extremely sensitive to changing climates

Insects that are adapted to perennially wet environments, like tropical rainforests, don't tend to do well when their surroundings dry out. New research published this Wednesday indicates they may be equally averse to heavy ...

Filling a vital gap in climate models

Researchers at the ARC Center of Excellence for Climate Extremes have filled an important gap in climate modeling and predictions with new research out today in the Journal of Geophysical Research: Atmospheres.

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Climate model

Climate models use quantitative methods to simulate the interactions of the atmosphere, oceans, land surface, and ice. They are used for a variety of purposes from study of the dynamics of the climate system to projections of future climate.

All climate models take account of incoming energy as short wave electromagnetic radiation (which in this context means visible and ultraviolet, not to be confused with shortwave) to the earth as well as outgoing energy as long wave (infrared) electromagnetic radiation from the earth. Any imbalance results in a change in the average temperature of the earth.

The most talked-about models of recent years have been those relating temperature to emissions of carbon dioxide (see greenhouse gas). These models project an upward trend in the surface temperature record, as well as a more rapid increase in temperature at higher altitudes.

Models can range from relatively simple to quite complex:

This is not a full list; for example "box models" can be written to treat flows across and within ocean basins. Furthermore, other types of modelling can be interlinked, such as land use, allowing researchers to predict the interaction between climate and ecosystems.

This text uses material from Wikipedia, licensed under CC BY-SA