Weather dictionary

ABSORTION

The process in which the incident radiation is retained by a certain body (solid, liquid or gaseous) and converted into heat or any other form of energy.

AFER

Also called Africo, Africino, Afro. The south-west wind in Italy.

AIR

A mixture of gases that make up the atmosphere of the earth. The most important gases that constitute dry air are nitrogen (N2) at 78.09%, oxygen (O2) at 20,946%, argon (A) at 0.93% and car…

ALBED

Reason between the light energy that by reflection spreads a surface and the energy involved. It varies according to the texture, color and extent of the surface of the object and is record…

ALTIMETER

It is an instrument used to determine the altitude at which an object is found in relation to a fixed level. The type of altimeter commonly used by meteorologists measures the altitude in r…

ALTIMETER AJUST

This is the pressure value in which the aircraft altimeter is fixed to indicate the height on the ground at which the aircraft travels.

ATMOSPHERE

The gaseous or air portion of the physical environment around the planet. In the case of the earth, it is more or less close to the surface thanks to the attraction of the gravity force of …

Advection

The horizontal transport of atmospheric properties or particles by moving air (wind), such as the advection of heat or moisture.

Cold advection

The horizontal movement of colder air toward a particular area. It contrasts with warm advection.

DROUGHT

Abnormally dry climate condition in a specific area that is prolonged due to lack of water and causes a serious hydrological balance.

ELEVATION

It is the term used in meteorology to measure the height of an object in relation to the average sea level.

HURACAN ALERT

Formal announcement issued by the meteorologists of the National Hurricane Centre when they determine that conditions for the formation of a hurricane could potentially affect a coastal are…

OTHER SPIRATION

Evapotranspiration is defined as the loss of moisture from a surface by direct evaporation along with the loss of water by transpiration of vegetation. It is expressed in mm per unit of tim…

PRESSURE ALTIMETER

It is an aneroid pressure barometer calibrated to indicate the geometric altitude (in meters or feet) and not in pressure units. It can be read exactly only in standard atmospheres and when…

SLEET

It is also known as ice balls. It is the winter precipitation in the form of small pieces or ice balls that bounce on the ground or on any hard surface. It is reported as "PE" in the METAR …

Shower

Precipitation from a convective cloud that starts and stops abruptly, with rapid changes in intensity and sky conditions. It may take the form of rain (SHRA), snow (SHSN), or ice pellets (S…

TORNATE

Air column that rotates violently in contact with and spreading between a convective cloud and the surface of the earth. It is the most destructive of atmospheric phenomena. Presenting the …

WATHER

It is the state of the atmosphere at a specific time regarding its effect on human life and activities. Changes in the atmosphere in the short term and not in the long term, as is the case …

Warm advection

The horizontal movement of warmer air toward a particular area. It contrasts with cold advection.