The subtropical ridge, also known as the subtropical high or horse latitudes, is a significant belt of atmospheric high pressure situated around the latitudes of 30°N in the Northern Hemisphere and 30°S in the Southern Hemisphere. It is characterized by mostly calm winds, which acts to reduce air quality under its axis by causing fog overnight, and haze during daylight hours caused by the stable atmosphere found near its location. Air flows out from its center toward the upper and lower latitudes of each hemisphere, creating both the trade winds and the westerlies. The subtropical ridge moves poleward during the summer, reaching its most northern latitude in early fall, before moving equatorward during the cold season. The ENSOclimate cycle can displace the northern hemisphere subtropical ridge, with La Niñas allowing for a more northerly axis for the ridge, while El Niños show flatter, more southerly ridges. The change of the ridge position during ENSO cycles changes tracks of tropical cyclones that form around their equatorward and western peripheries. As the subtropical ridge varies in position and strength, it can enhance or depress monsoon regimes around their low-latitude periphery. The term "horse latitudes" refers to and is synonymous with the subtropical ridge or subtropical high.
A description of how the Subtropical Ridge affects rainfall in southern Australia.
published: 13 Dec 2010
Understanding the Southern Annular Mode (SAM)
Improve your understanding of one of Australia's key climate drivers, the Southern Annular Mode (SAM). To find out more visit: http://www.bom.gov.au/climate/sam.
published: 12 Jun 2019
What Are Jet Streams?
Mike Bettes explains jet streams and how they affect our weather.
published: 27 Sep 2019
Audial The Plummet - Subtropical Ridge
Album: Ten Year Celebration (2020)
Created by Tim MacGregor,
property of MacGregor Records.
https://www.youtube.com/user/MrMacgregorRecords
published: 05 Jun 2020
Climatedog Ridgy
Climatedog explanation on Australian Climate. This is Ridgy, or as scientists like to call him, the Sub-tropical Ridge. Ridgy's one of the four major drivers that shapes Victoria's seasonal weather.
published: 23 May 2014
FORECAST LAB - Wed 7/15/2020 - Upper air analysis / Subtropical ridges / Record heat in the arctic
Tim Vasquez (former Air Force / Air Weather Service meteorologist) shows you how to forecast weather starting with the basics.
published: 15 Jul 2020
How jet streams affect our weather: an in-depth guide
Improve your understanding of the El Niño and La Niña and their impacts on our climate and weather with our new Understanding ENSO video
This video explains what El Niño–Southern Oscillation (ENSO) is, how the cycle works including the science behind the phases, and the potential impacts on Australia’s climate and weather.
published: 16 Dec 2014
Climatedogs: RIDGY
'Ridgy' otherwise known as the Subtropical Ridge is the lead dog of the pack. 'Ridgy's' position and intensity have a significant influence on weather in NSW. Recent changes in Ridgy's behaviour appear to be driving some significant changes to southern NSW rainfall patterns.
Improve your understanding of one of Australia's key climate drivers, the Southern Annular Mode (SAM). To find out more visit: http://www.bom.gov.au/climate/sam...
Improve your understanding of one of Australia's key climate drivers, the Southern Annular Mode (SAM). To find out more visit: http://www.bom.gov.au/climate/sam.
Improve your understanding of one of Australia's key climate drivers, the Southern Annular Mode (SAM). To find out more visit: http://www.bom.gov.au/climate/sam.
Climatedog explanation on Australian Climate. This is Ridgy, or as scientists like to call him, the Sub-tropical Ridge. Ridgy's one of the four major drivers th...
Climatedog explanation on Australian Climate. This is Ridgy, or as scientists like to call him, the Sub-tropical Ridge. Ridgy's one of the four major drivers that shapes Victoria's seasonal weather.
Climatedog explanation on Australian Climate. This is Ridgy, or as scientists like to call him, the Sub-tropical Ridge. Ridgy's one of the four major drivers that shapes Victoria's seasonal weather.
Jet streams are fast-flowing currents of air that meander around the world at around 8 to 15 kilometres above sea level. We know that these high-altitude winds ...
Improve your understanding of the El Niño and La Niña and their impacts on our climate and weather with our new Understanding ENSO video
This video explains w...
Improve your understanding of the El Niño and La Niña and their impacts on our climate and weather with our new Understanding ENSO video
This video explains what El Niño–Southern Oscillation (ENSO) is, how the cycle works including the science behind the phases, and the potential impacts on Australia’s climate and weather.
Improve your understanding of the El Niño and La Niña and their impacts on our climate and weather with our new Understanding ENSO video
This video explains what El Niño–Southern Oscillation (ENSO) is, how the cycle works including the science behind the phases, and the potential impacts on Australia’s climate and weather.
'Ridgy' otherwise known as the Subtropical Ridge is the lead dog of the pack. 'Ridgy's' position and intensity have a significant influence on weather in NSW. R...
'Ridgy' otherwise known as the Subtropical Ridge is the lead dog of the pack. 'Ridgy's' position and intensity have a significant influence on weather in NSW. Recent changes in Ridgy's behaviour appear to be driving some significant changes to southern NSW rainfall patterns.
'Ridgy' otherwise known as the Subtropical Ridge is the lead dog of the pack. 'Ridgy's' position and intensity have a significant influence on weather in NSW. Recent changes in Ridgy's behaviour appear to be driving some significant changes to southern NSW rainfall patterns.
Improve your understanding of one of Australia's key climate drivers, the Southern Annular Mode (SAM). To find out more visit: http://www.bom.gov.au/climate/sam.
Climatedog explanation on Australian Climate. This is Ridgy, or as scientists like to call him, the Sub-tropical Ridge. Ridgy's one of the four major drivers that shapes Victoria's seasonal weather.
Improve your understanding of the El Niño and La Niña and their impacts on our climate and weather with our new Understanding ENSO video
This video explains what El Niño–Southern Oscillation (ENSO) is, how the cycle works including the science behind the phases, and the potential impacts on Australia’s climate and weather.
'Ridgy' otherwise known as the Subtropical Ridge is the lead dog of the pack. 'Ridgy's' position and intensity have a significant influence on weather in NSW. Recent changes in Ridgy's behaviour appear to be driving some significant changes to southern NSW rainfall patterns.
The subtropical ridge, also known as the subtropical high or horse latitudes, is a significant belt of atmospheric high pressure situated around the latitudes of 30°N in the Northern Hemisphere and 30°S in the Southern Hemisphere. It is characterized by mostly calm winds, which acts to reduce air quality under its axis by causing fog overnight, and haze during daylight hours caused by the stable atmosphere found near its location. Air flows out from its center toward the upper and lower latitudes of each hemisphere, creating both the trade winds and the westerlies. The subtropical ridge moves poleward during the summer, reaching its most northern latitude in early fall, before moving equatorward during the cold season. The ENSOclimate cycle can displace the northern hemisphere subtropical ridge, with La Niñas allowing for a more northerly axis for the ridge, while El Niños show flatter, more southerly ridges. The change of the ridge position during ENSO cycles changes tracks of tropical cyclones that form around their equatorward and western peripheries. As the subtropical ridge varies in position and strength, it can enhance or depress monsoon regimes around their low-latitude periphery. The term "horse latitudes" refers to and is synonymous with the subtropical ridge or subtropical high.