Atmospheric Circulation

Atmospheric circulation

1- Latitudinal features: Hadley cell

The region in which the equatorward moving surface flows converge and rise is known as the intertropical convergence zone, 

or ITCZ, a high-precipitation band of thunderstorms.Having lost most of its water vapor to condensation and rain in the upward 

branch of the circulation, the descending air is dry. Low relative humidities are produced as the air is adiabatically warmed 

due to compression as it descends into a region of higher pressure.

2- Latitudinal features: Polar cell

During Drosophila oogenesis, the somatic follicle cells form an epithelial

 layer surrounding the germline cells to form egg chambers. In this process, 

follicle cell precursors are specified into polar cells, stalk cells, and main-body follicle cells. Proper specification of 

these three cell types ensures correct egg chamber formation and polarization of the anterior-posterior axis of the germline cells.

3- Latitudinal features: Ferrel cell

Ferrel cell, atmospheric circulation [Credit: Encyclopædia Britannica, Inc.]model of the mid-latitude segment of Earth’s wind circulation, proposed by William Ferrel (1856). 

 A circulation cell which forms at the mid-latitudes of a rotating planet to balance the transport by the Hadley and polar cells. 

The Ferrel cell has air motion opposite to planetary rotation. At the surface, this forms the southwesterly prevailing westerlies. 

The Ferrel cells and Hadley cells meet at the horse latitudes.

4- Latitudinal features: Walker Circulation

The Walker circulation is an ocean-based system of air circulation that influences weather on the Earth.  

The Walker circulation is the result of a difference in surface pressure and temperature over the western and eastern tropical Pacific Ocean.

Atmospheric circulation

1- Latitudinal features: Hadley cell

The region in which the equatorward moving surface flows converge and rise is known as the intertropical convergence zone, or ITCZ, a high-precipitation band of thunderstorms.Having lost most of its water vapor to condensation and rain in the upward branch of the circulation, the descending air is dry.

Low relative humidities are produced as the air is adiabatically warmed due to compression as it descends into a region of higher pressure.

2- Latitudinal features: Polar cell

During Drosophila oogenesis, the somatic follicle cells form an epithelial layer surrounding the germline cells to form egg chambers. In this process, 

follicle cell precursors are specified into polar cells, stalk cells, and main-body follicle cells.

Proper specification of these three cell types ensures correct egg chamber formation and polarization of the anterior-posterior axis of the germline cells.

3- Latitudinal features: Ferrel cell

The Ferrel cell has air motion opposite to planetary rotation. At the surface, this forms the southwesterly prevailing westerlies. 

The Ferrel cells and Hadley cells meet at the horse latitudes.

4- Latitudinal features: Walker Circulation

The Walker circulation is the result of a difference in surface pressure and temperature over the western and eastern tropical Pacific Ocean.

The Walker circulation is an ocean-based system of air circulation that influences weather on the Earth.