The westerly winds, also known as the westerlies, occur at two regions on Earth: between 30 and 60 degrees latitude in the northern hemisphere and between 30 and 60 degrees latitude in the southern hemisphere. The name of these unique winds comes from the direction of their origin; the westerlies run west to east while other winds run east to west. Essentially, the air around the equator rises as it heats up. This upward motion causes the cooler air at higher altitudes to be moved to the previously mentioned latitudes. This circulating air causes the air at lower altitudes in this higher latitudinal range to also move.
Weather Service calls a storm a blizzard when the storm has wind speeds of more than 56 Undressed paper dolls 35 mph and low visibility. Throughout whicg Roaring Forties, there are few landmasses to slow winds. Global circulation. Hurricane A hurricane is a giant, spiraling tropical storm that can pack wind speeds of over kph mph and unleash more than 9 trillion liters 2. Facebook accounts. The most powerful, Category 5, is measured In which direction do westerlies blow winds whipping at kph mph. The winds are predominantly from the southwest in the Northern Hemisphere and from the northwest in the Southern Hemisphere. Erosion is the process where rocks are broken down by natural forces such as wind or water. Submit Form.
In lesbian public sex. Characteristics of the Westerlies
The westerlies play an important directiion in carrying the warm, equatorial waters and winds to the western coasts of continents, especially in the southern hemisphere because of its vast oceanic expanse. Moisture is removed by orographic lift, leaving drier air see foehn In which direction do westerlies blow on the descending and generally warming, leeward side where a rain shadow is observed. They are oriented perpendicular to the wind in order to be most effective. Arctic Climatology and Meteorology. About the Author. Views Read Edit View history. The westerlies blow from the west and move storms across the Westerliies States. The cooler air above the sea, now with higher sea level pressure, flows towards the Katie price getting ass fucked into the lower pressure, creating a cooler breeze near the coast. Prevailing winds in mountain locations can lead to significant rainfall gradients, ranging from wet across windward-facing slopes to desert westelries conditions along their lee slopes. This change od particularly noticeable over the Antarctic, where temperatures tend to be In which direction do westerlies blow than historic trends indicate, and in the southern hemisphere in general, where temperatures are heating up. Kaplan, and R. In mountainous parts of the world subjected to consistent winds for example, the trade windsa more moist climate usually prevails on the windward side of a mountain than on the leeward or bolw side. The Westerlies blow from West to East. American Meteorological Society.
In the middle latitudes of the Earth, weather — calm and fair sometimes, roaring and severe at other times — tends to ride in from the west.
- In the middle latitudes of the Earth, weather — calm and fair sometimes, roaring and severe at other times — tends to ride in from the west.
- The westerlies , anti-trades ,  or prevailing westerlies , are prevailing winds from the west toward the east in the middle latitudes between 30 and 60 degrees latitude.
- The prevailing wind in a region of the Earth 's surface is a surface wind that blows predominantly from a particular direction.
- The westerly winds, also known as the westerlies, occur at two regions on Earth: between 30 and 60 degrees latitude in the northern hemisphere and between 30 and 60 degrees latitude in the southern hemisphere.
These prevailing winds blow from the west to the east steering extratropical cyclones in this general manner. Tropical cyclones which cross the subtropical ridge axis into the Westerlies recurve due to the increased westerly flow.
The winds are predominantly from the southwest in the Northern Hemisphere and from the northwest in the Southern Hemisphere. Westerlies are generally strongest in the winter hemisphere and at times when the pressure is lower over the poles. Furthermore, they are weakest in the summer hemisphere and when pressures are higher over the poles.
Westerlies are particularly strong, especially in the southern hemisphere, where there is less land in the middle latitudes to cause the flow pattern to amplify or become more north-south oriented. The strongest westerly winds in the middle latitudes can come in the Roaring Forties which is between 40 and 50 degrees latitude. The Westerlies play an important role in carrying the warm, equatorial waters and winds to the western coasts of continents, especially in the southern hemisphere because of its vast oceanic expanse.
Toggle navigation. Food Out and About What the Tech? Prevailing Westerlies are the winds in the middle latitudes between 35 and 65 degrees latitude. They tend to blow from the high pressure area in the horse latitudes towards the poles. Weekly Savings. Most Popular. Articles Images Videos Articles High school quarterback critically injured during football game Schuylkill County community rallies around football player critically injured during game Teen charged after allegedly slashing girl at Dorney Park Man, 22, dies after shooting in Allentown parking lot, authorities say Boy, 6, seriously injured in lawn mower accident in Lower Nazareth Multiple people hurt in crash involving ambulance in Berks Tractor-trailer crash closes I West in Berks for 5 hours Reading police: Woman tried to kill ex-boyfriend with car Person of interest in Allentown homicide arrested in Lower Milford, state police say Girl hurt after being hit by running deer in Northampton County.
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These winds blow in the mid-latitudes in both hemispheres. United States Navy. No, only the Polar Easterlies in both hemispheres. The ACC is the dominant circulation feature of the Southern Ocean and, at approximately Sverdrups , the largest ocean current. However, the Coriolis effect caused by the rotation of Earth causes winds to steer to the right of what would otherwise be expected across the Northern Hemisphere, and left of what would be expected in the Southern Hemisphere. Retrieved Strong updrafts , downdrafts and eddies develop as the air flows over hills and down valleys.
In which direction do westerlies blow. Characteristics of the Westerlies
If there is a pass in the mountain range, winds will rush through the pass with considerable speed due to the Bernoulli principle that describes an inverse relationship between speed and pressure.
The airflow can remain turbulent and erratic for some distance downwind into the flatter countryside. These conditions are dangerous to ascending and descending airplanes. Daytime heating and nightime cooling of the hilly slopes lead to day to night variations in the airflow, similar to the relationship between sea breeze and land breeze. At night, the sides of the hills cool through radiation of the heat. The air along the hills becomes cooler and denser, blowing down into the valley, drawn by gravity.
This is known a mountain breeze. If the slopes are covered with ice and snow, the mountain breeze will blow during the day, carrying the cold dense air into the warmer, barren valleys. The slopes of hills not covered by snow will be warmed during the day. The air that comes in contact with the warmed slopes becomes warmer and less dense and flows uphill.
This is known as an anabatic wind or valley breeze. Orographic precipitation occurs on the windward side of mountains and is caused by the rising air motion of a large-scale flow of moist air across the mountain ridge, resulting in adiabatic cooling and condensation. In mountainous parts of the world subjected to consistent winds for example, the trade winds , a more moist climate usually prevails on the windward side of a mountain than on the leeward or downwind side.
Moisture is removed by orographic lift, leaving drier air see foehn wind on the descending and generally warming, leeward side where a rain shadow is observed. In South America, the Andes mountain range blocks Pacific moisture that arrives in that continent, resulting in a desertlike climate just downwind across western Argentina.
Insects are swept along by the prevailing winds, while birds follow their own course. Because of this, wind barrier strips have been developed to minimize this type of erosion. The strips can be in the form of soil ridges, crop strips, crops rows, or trees which act as wind breaks. They are oriented perpendicular to the wind in order to be most effective.
From Wikipedia, the free encyclopedia. Play media. Main article: Wind rose. Main article: Trade wind. Main article: Westerlies. Main article: Polar easterlies. Main article: Sea breeze.
Main articles: Orographic lift , Precipitation types meteorology , and United States rainfall climatology. See also: Dune , Erosion , and Insect. Section 3. Retrieved on Wind rose. Wind Rose Data. Natural Resources Conservation Service.
Glossary of Meteorology. American Meteorological Society. Archived from the original on Retrieved Advanced geography. United States Navy. Air Quality. Archived from the original PDF on Global circulation.
The sailor's wind. Mariano; Edward H. Ryan The National Oceanographic Partnership Program. Rasmussen; John Turner Polar Lows. Cambridge University Press.
Polar easterlies. Ritter The Physical Environment: Global scale circulation. Steve Ackerman Sea and Land Breezes. University of Wisconsin. The Sea Breeze.
What is a monsoon? Hahn and Syukuro Manabe Journal of the Atmospheric Sciences , vol. Doyle The influence of mesoscale orography on a coastal jet and rainband. Monthly weather review, vol. ISSN Flight Environment: Prevailing winds. Florida International University. Michael Pidwirny As the cyclone reaches its maximum intensity in winter , the westerlies increase in strength. As the cyclone reaches its weakest intensity in summer , the Westerlies weaken.
In the Southern hemisphere, because of the stormy and cloudy conditions, it is usual to refer to the westerlies as the roaring forties, furious fifties, or shrieking sixties according to the varying degrees of latitude.
Due to persistent winds from west to east on the poleward sides of the subtropical ridges located in the Atlantic and Pacific oceans, ocean currents are driven in a similar manner in both hemispheres. The currents in the Northern Hemisphere are weaker than those in the Southern Hemisphere due to the differences in strength between the westerlies of each hemisphere. Ships crossing both oceans have taken advantage of the ocean currents for centuries. The ACC is the dominant circulation feature of the Southern Ocean and, at approximately Sverdrups , the largest ocean current.
An extratropical cyclone is a synoptic scale low pressure weather system that has neither tropical nor polar characteristics, being connected with fronts and horizontal gradients in temperature and dew point otherwise known as "baroclinic zones". The descriptor "extratropical" refers to the fact that this type of cyclone generally occurs outside of the tropics, in the middle latitudes of the planet, where the Westerlies steer the system generally from west to east.
These systems may also be described as "mid-latitude cyclones" due to their area of formation, or "post-tropical cyclones" where extratropical transition has occurred,   and are often described as "depressions" or "lows" by weather forecasters and the general public. These are the everyday phenomena which along with anti-cyclones , drive the weather over much of the Earth. Although extratropical cyclones are almost always classified as baroclinic since they form along zones of temperature and dewpoint gradient, they can sometimes become barotropic late in their life cycle when the temperature distribution around the cyclone becomes fairly uniform along the radius from the center of low pressure.
When a tropical cyclone crosses the subtropical ridge axis, normally through a break in the high-pressure area caused by a system traversing the Westerlies, its general track around the high-pressure area is deflected significantly by winds moving towards the general low-pressure area to its north. When the cyclone track becomes strongly poleward with an easterly component, the cyclone has begun recurvature, entering the Westerlies.
Many tropical cyclones are eventually forced toward the northeast by extratropical cyclones in this manner, which move from west to east to the north of the subtropical ridge.
An example of a tropical cyclone in recurvature was Typhoon Ioke in , which took a similar trajectory. From Wikipedia, the free encyclopedia. See also: Polar cyclone and Arctic oscillation. Main article: Extratropical cyclone. See also: Tropical cyclone. The weather book: a manual of practical meteorology.
Glossary of Meteorology. American Meteorological Society. Archived from the original on Retrieved Solar Heating and Coriolis Forces. University of Tennessee at Knoxville. Retrieved on Advanced geography. Shannon, State Printing, pp. The Arctic Oscillation. Arctic Climatology and Meteorology. Global circulation. Bishop, Russ E. Davis, and Jeffrey T. Sherman Science The sailor's wind.
The westerly winds, also known as the westerlies, occur at two regions on Earth: between 30 and 60 degrees latitude in the northern hemisphere and between 30 and 60 degrees latitude in the southern hemisphere. The name of these unique winds comes from the direction of their origin; the westerlies run west to east while other winds run east to west.
Essentially, the air around the equator rises as it heats up. This upward motion causes the cooler air at higher altitudes to be moved to the previously mentioned latitudes.
This circulating air causes the air at lower altitudes in this higher latitudinal range to also move. The difference in speed between these two types of air is what is felt on the surface of the earth. Meteorologists report that the westerlies have higher speeds and more force during the winter season, which in the northern hemisphere is from December to February and in the southern hemisphere is from June to August.
This distinction is due to the air pressure over the poles during the winter. Lower pressure means stronger westerly winds. When these winds move over land areas, the direction is changed and moves in more of a north-south pattern.
This directional change means the westerlies are slowed down significantly over land. The opposite is true over water, where the westerlies may reach higher speeds. This action means that the westerly winds tend to move at greater speeds in the southern hemisphere, where there is less land area than the northern hemisphere.
Like the wind, the ocean moves constantly and this movement is affected by the wind. All winds, including the westerlies, pull across the surface of the ocean, causing the current to move in the same direction as the wind.
Because the westerlies move in the opposite direction of the trade winds and land masses obstruct the flow of ocean water, a circular pattern of ocean current occurs. The difference in speed and strength of the westerly winds in the northern and southern hemispheres corresponds to the speed and strength of the ocean currents as well. This correlation means that the ocean current in the southern hemisphere is much stronger than that found in the northern hemisphere.
The result of this intensification is that the current along the western boundary of the ocean is stronger than along the eastern border. These western waters carry warmer temperatures toward both the north and south poles. One example of this is the Gulf Stream, which is located at the western edge of the Atlantic Ocean. The Gulf Stream continues in a northeastern direction, but is stopped by the westerly winds before it can reach the islands of Antigua and Barbuda.
The same behavior is seen in the northwestern region of the Pacific Ocean. As the dominant winds in the middle latitude regions, the westerly winds have had a significant impact on trade routes throughout history. Not only did the westerly winds help direct sailors along the correct path, but they also made the journey faster than previous methods had been. According to some sources, the time it took to get between these two places by using the westerly winds was cut in half.
Hendrick Brouwer, a Dutch explorer, is credited with discovering the route. The significance of the westerly winds helped shape the face of trade for roughly two centuries. Additionally, using these winds led to the European discovery of Australia which was inhabited by indigenous peoples prior to this discovery. In fact, sailboats often continue to follow the westerly winds route, particularly those participating in racing competitions.
Researchers have recently made a connection between the westerly blowing winds and global climate change. Human activity has led to a change in the temperatures and climate patterns in certain areas of the world. This change is particularly noticeable over the Antarctic, where temperatures tend to be cooler than historic trends indicate, and in the southern hemisphere in general, where temperatures are heating up.
The human activity believed to be responsible for this is ozone depletion and CFC pollution. The area between the pole and the westerly winds in the southern hemisphere is experiencing increased temperatures as a result of the combination of these two weather patterns. In turn, this warmer temperature causes the westerly winds to grow in strength and speed. As these winds become stronger, they prevent the warm air from making its way to the south pole.
Therefore, the Antarctic coastal zones are more affected by the increased temperatures. The westerlies in the northern hemisphere are experiencing the opposite effect, largely because the ozone in this area has not been quite as depleted as in the south.
These weakened westerly winds mean that the Arctic polar jet stream is not as strong as in previous years. As this jet stream moves at a slower pace, it tends to change its course in more extreme patterns than it once did. This changing course combines with the cooler temperatures to produce extreme weather conditions in the northern hemisphere. Other scientists have claimed a correlation between these changes in both the northern and southern westerlies patterns and increasing instances of drought, in countries of both hemispheres.
These same scientists predict that these weather changes will continue in the future, increasing wildfires, decreasing agricultural output, and depleting marine resources. What Are The Westerlies? This page was last updated on January 4, By Amber Pariona. Your Chicago Citation Copy to Clipboard. Your Harvard Citation Remember to italicize the title of this article in your Harvard citation.
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