Dobson unit

An example is the Dobson unit for atmospheric ozone.

Dobson Units are a measure of ozone amounts above a fixed point in the atmosphere.

Prior to 1979, scientists had not observed concentrations below 220 Dobson Units.

Dobson units are a measure of total ozone in a vertical column of air.

The Dobson Unit arises from the ideal gas law.

A Dobson Unit is the total amount of a trace gas per unit area.

The ozone hole is defined as the size of the region with total ozone below 220 Dobson units.

The Dobson unit is a measure of how ozone absorbs several different wavelengths of sunlight.

When the ozone layer was intact, normal readings above Antarctica reached 500 Dobson units.

Dobson units measure the atmosphere's ability to absorb and block certain wavelengths of light coming from the Sun, notably ultraviolet radiation.

This would require that the quantities of ozone to fall below 200 Dobson units, from the 250 recorded over central Siberia.

Scientists use the word hole as a metaphor for the area in which ozone concentrations drop below the historical threshold of 220 Dobson Units.

Dobson units are a measure of the ability of the atmosphere to absorb certain wavelengths of light, especially in the ultraviolet range.

Prior to the springtime period in Antarctica, when ozone depletion occurs, the normal Dobson unit reading is around 275.

The "Dobson unit", a convenient measure of the columnar density of ozone overhead, is named in his honor.

Last year's record-breaking ozone loss plunged to 93 Dobson units Oct. 9 and covered nearly 11.4 million square miles at its peak.

The Dobson unit, a unit of measurement of vertically integrated atmospheric ozone density, is named after him.

The standard way to express total ozone levels (the amount of ozone in a vertical column) in the atmosphere is by using Dobson units.

One Dobson unit refers to a layer of gas that would be 10 m thick under standard temperature and pressure, sometimes referred to as a 'milli-atmo-centimeter.'

The maximum depth of the hole that year was 194 Dobson Units (DU)-not far below the historical low.

A Dobson unit is a unit of measurement that describes the thickness of the ozone layer in a column directly above the location being measured.

A Dobson unit is a measurement of ozone made by comparing how much of each of two wavelengths of sunlight is absorbed in the air.

Ozone is measured in Dobson units, each of which represents the physical thickness of the ozone layer if it were compressed at the Earth's surface.

The Dobson unit is named after Gordon Dobson, who was a researcher at the University of Oxford.

Dr. Miller said the sensor on NOAA-11 should be sensitive enough to measure ozone changes of one to two Dobson units.