Oxford Index Browse

You are looking at 1-10 of 67 items for:

Overview x Environmental Science x Meteorology and Climatology x clear all

Refine by type

Refine by product

 

ablation zone

Overview page. Subjects: Environmental Science — Meteorology and Climatology.

The zone of a glacier in which losses through various processes, such as calving, deflation, melting, etc., exceed any addition through snowfall or accumulation of rime ice. Compare...

See overview in Oxford Index

air

Overview page. Subjects: Meteorology and Climatology — Environmental Science.

1 A mixture of gases that makes up the Earth's atmosphere. It comprises about 78% nitrogen, 21% oxygen, less than 1% of carbon dioxide and other gases, and varying amounts of...

See overview in Oxford Index

air mass thunderstorm

Overview page. Subjects: Meteorology and Climatology — Environmental Science.

A thunderstorm that develops, generally late in the day, within a warm, moist air mass through convective heating from the surface. Neither widespread uplift nor vertical motion at a front...

See overview in Oxford Index

anomaly

Overview page. Subjects: Meteorology and Climatology — Environmental Science.

The difference between a particular measurement (for example of weather elements such as temperature or precipitation) and the mean or expected value.

See overview in Oxford Index

anvil cloud

Overview page. Subjects: Environmental Science — Meteorology and Climatology.

The common name for a cumulonimbus that has reached the capillatus stage (i.e. has undergone glaciation), particularly if it has spread out at an inversion (such as the tropopause) to...

See overview in Oxford Index

Beaufort scale

Overview page. Subjects: Environmental Science — Meteorology and Climatology.

A scale that is widely used to describe wind speed. It was defined in 1806 by Admiral Sir Francis Beaufort (1774–1857), and uses the effect that wind has on certain familiar objects such as...

See overview in Oxford Index

broken cloud

Overview page. Subjects: Environmental Science — Meteorology and Climatology.

Cloud that covers 60–90 per cent of the sky. See also overcast.

See overview in Oxford Index

butterfly effect

Overview page. Subjects: Meteorology and Climatology — Environmental Science.

The phenomenon by which a small change at one place in a complex system can have large effects elsewhere. For example, through teleconnection a butterfly that flaps its wings in Rio de...

See overview in Oxford Index

cirriform

Overview page. Subjects: Meteorology and Climatology — Environmental Science.

Clouds that consist solely of ice crystals and thus have a generally fibrous structure: cirrus, cirrostratus, and cirrocumulus. The term is also applied to the cirrus shields or plumes of...

See overview in Oxford Index

climate Modification

Overview page. Subjects: Environmental Science — Meteorology and Climatology.

Changes of the climate that can occur as a result of either natural processes (such as volcanic eruptions, El Niño–Southern Oscillation events, or sunspot activity) or human activities...

See overview in Oxford Index