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cloud formation,types,causes.
This document discusses cloud formation and types of clouds. It presents that clouds are formed through convection as warmer air rises and cools, causing water vapor to condense into liquid droplets or ice crystals. Clouds are classified into high, middle, and low-level clouds based on their height and composition. Factors like surface heating, topography, fronts, convergence, and turbulence can influence cloud formation. Clouds impact the environment by regulating temperature through reflection and absorption of heat and enabling precipitation through the water cycle.
Cyclones and anticyclones
Cyclones involve a closed circulation around a low pressure center, spinning counterclockwise in the Northern Hemisphere. They bring strong winds inward and cause extensive damage from heavy rain. Cyclones are known by different names depending on location, such as hurricanes in the Atlantic and typhoons in the Western Pacific. Anticyclones circulate clockwise around a high pressure center, pushing winds outward and typically bringing fine weather. Key differences between cyclones and anticyclones are the direction of circulation and associated weather patterns.
Synoptic Charts
The document provides information about weather maps and weather concepts. It discusses key elements of weather maps including isobars, pressure cells, wind direction and speed. It explains that high pressure cells bring clear skies while low pressure cells bring cloud and rain. It also summarizes different types of rainfall including convectional, orographic and frontal rainfall. Seasons are determined by the positioning of pressure systems with lows over northern Australia in summer and highs in winter.
3. Anticyclones
Anticyclones bring settled weather to the UK, with dry, bright conditions that can last for several days. In summer, anticyclones result in hot and sunny weather due to clear skies and a high sun. In winter, anticyclones lead to cold, clear nights that allow frost and fog to form as the sun is low and days are short. The weather associated with anticyclones is explained by the sinking air within the high pressure system, which warms and picks up moisture, preventing cloud and precipitation.
Monsoon
The document discusses the Indian monsoon system. It defines monsoon as seasonal reversing winds accompanied by changes in precipitation. It notes that India's climate is strongly influenced by the monsoon winds. The monsoon seasons include the advancing monsoon from June to September, which brings heavy rainfall, and the retreating monsoon from October to November, marked by clearer skies and rising temperatures. Rainfall distribution across India is uneven, with higher amounts on the western coast and lower in parts of Rajasthan.
SOLAR RADIATION,HEAT AND TEMPERATURE
The document discusses solar radiation and the processes that control Earth's heat balance and temperature distribution. It explains that Earth receives energy from the sun which is absorbed and radiated back to space. Some key points are:
- Solar radiation heats the atmosphere through various processes like convection, conduction, and radiation.
- Factors like the Earth's rotation, revolution, latitude, proximity to oceans influence the amount of incoming solar radiation (insolation) at different locations.
- Earth's temperature is determined by the balance between the solar energy received and radiated back to space. Temperature varies based on latitude, altitude, land/sea distribution and ocean/wind currents.
Pre-Monsoon - Western Disturbance
Western disturbances originate over the Caspian Sea and Mediterranean Sea as subtropical cyclones south of 20°N, then travel over Iran, Afghanistan, Pakistan, and into the Indian subcontinent including Punjab, Haryana, Delhi, Uttar Pradesh, and sometimes northeastern regions. They bring winter and pre-monsoon rainfall which is important for crops like wheat in northern regions. In the absence of moisture, strong upward air currents carry dust and cause dust storms. Western disturbances typically occur between January and April.
The mechanism of monsoons
The document summarizes the mechanism of the Indian monsoon. It describes how seasonal winds blow from the sea to land for months each year in tropical regions. Meteorologists have found a seesaw relationship between pressure changes in the Pacific and Indian Oceans, which causes shifting winds across the equator between seasons. Specifically, lower pressure over the Indian Ocean in the Northern Hemisphere summer draws winds from the Pacific toward India, bringing the southwest monsoon. Coriolis forces cause the winds to change direction as they cross the equator.
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cloud formation,types,causes.
This document discusses cloud formation and types of clouds. It presents that clouds are formed through convection as warmer air rises and cools, causing water vapor to condense into liquid droplets or ice crystals. Clouds are classified into high, middle, and low-level clouds based on their height and composition. Factors like surface heating, topography, fronts, convergence, and turbulence can influence cloud formation. Clouds impact the environment by regulating temperature through reflection and absorption of heat and enabling precipitation through the water cycle.
Cyclones and anticyclones
Cyclones involve a closed circulation around a low pressure center, spinning counterclockwise in the Northern Hemisphere. They bring strong winds inward and cause extensive damage from heavy rain. Cyclones are known by different names depending on location, such as hurricanes in the Atlantic and typhoons in the Western Pacific. Anticyclones circulate clockwise around a high pressure center, pushing winds outward and typically bringing fine weather. Key differences between cyclones and anticyclones are the direction of circulation and associated weather patterns.
Synoptic Charts
The document provides information about weather maps and weather concepts. It discusses key elements of weather maps including isobars, pressure cells, wind direction and speed. It explains that high pressure cells bring clear skies while low pressure cells bring cloud and rain. It also summarizes different types of rainfall including convectional, orographic and frontal rainfall. Seasons are determined by the positioning of pressure systems with lows over northern Australia in summer and highs in winter.
3. Anticyclones
Anticyclones bring settled weather to the UK, with dry, bright conditions that can last for several days. In summer, anticyclones result in hot and sunny weather due to clear skies and a high sun. In winter, anticyclones lead to cold, clear nights that allow frost and fog to form as the sun is low and days are short. The weather associated with anticyclones is explained by the sinking air within the high pressure system, which warms and picks up moisture, preventing cloud and precipitation.
Monsoon
The document discusses the Indian monsoon system. It defines monsoon as seasonal reversing winds accompanied by changes in precipitation. It notes that India's climate is strongly influenced by the monsoon winds. The monsoon seasons include the advancing monsoon from June to September, which brings heavy rainfall, and the retreating monsoon from October to November, marked by clearer skies and rising temperatures. Rainfall distribution across India is uneven, with higher amounts on the western coast and lower in parts of Rajasthan.
SOLAR RADIATION,HEAT AND TEMPERATURE
The document discusses solar radiation and the processes that control Earth's heat balance and temperature distribution. It explains that Earth receives energy from the sun which is absorbed and radiated back to space. Some key points are:
- Solar radiation heats the atmosphere through various processes like convection, conduction, and radiation.
- Factors like the Earth's rotation, revolution, latitude, proximity to oceans influence the amount of incoming solar radiation (insolation) at different locations.
- Earth's temperature is determined by the balance between the solar energy received and radiated back to space. Temperature varies based on latitude, altitude, land/sea distribution and ocean/wind currents.
Pre-Monsoon - Western Disturbance
Western disturbances originate over the Caspian Sea and Mediterranean Sea as subtropical cyclones south of 20°N, then travel over Iran, Afghanistan, Pakistan, and into the Indian subcontinent including Punjab, Haryana, Delhi, Uttar Pradesh, and sometimes northeastern regions. They bring winter and pre-monsoon rainfall which is important for crops like wheat in northern regions. In the absence of moisture, strong upward air currents carry dust and cause dust storms. Western disturbances typically occur between January and April.
The mechanism of monsoons
The document summarizes the mechanism of the Indian monsoon. It describes how seasonal winds blow from the sea to land for months each year in tropical regions. Meteorologists have found a seesaw relationship between pressure changes in the Pacific and Indian Oceans, which causes shifting winds across the equator between seasons. Specifically, lower pressure over the Indian Ocean in the Northern Hemisphere summer draws winds from the Pacific toward India, bringing the southwest monsoon. Coriolis forces cause the winds to change direction as they cross the equator.
Climate classification prepared by Dr.BABU N
The document discusses climate classification according to the Koppen system. It begins by defining climate and contrasting it with weather. It then explains the Koppen system classifies climates based on temperature and precipitation zones that correspond with vegetation types. The major climate zones include tropical, dry, mild, and polar climates. Within these zones are subtypes defined by factors like rainfall patterns, proximity to bodies of water, and temperature ranges. The Koppen system provides a standardized way to categorize and compare climates around the world based on observable environmental factors.
General Circulation of the Atmosphere
Air Circulation models, three model cells, planetary & local wind are shown here with flexible example.
Air Masses
There are several major air masses that influence weather patterns:
1) Continental Arctic (cA) air masses are very cold and dry, originating north of the Arctic Circle.
2) Continental polar (cP) air masses are cold and dry, originating in northern Canada and influencing northern US weather.
3) Maritime polar (mP) air masses are cool and moist, originating over the North Atlantic and Pacific and influencing the Pacific Northwest and Northeast.
4) Maritime tropical (mT) air masses are warm and moist, originating in the Gulf of Mexico and influencing the eastern US.
Meterological Instruments
Meteorological instruments are used to measure various atmospheric conditions. Key instruments include thermometers for temperature (degrees Celsius/Fahrenheit), barometers for pressure (hPa, mb), anemometers for wind speed (m/s, km/h), rain gauges for precipitation (mm), and hygrometers for humidity (percent relative humidity). Other instruments such as ceilometers, disdrometers, and weather balloons equipped with radiosondes are used to observe clouds, raindrops, and wind/temperature/pressure profiles at different altitudes. Measurements from these instruments provide critical data for weather forecasts and climate studies.
Meteorology
1. The document discusses key concepts about Earth's atmosphere including how solar radiation drives global climate and local weather patterns.
2. It explains different climate types based on factors like latitude, proximity to bodies of water, and elevation. Humid climates receive more precipitation than potential evapotranspiration while arid climates experience the opposite.
3. Atmospheric circulation patterns like global wind belts and ocean currents play an important role in moderating Earth's climate by transporting heat energy from the tropics to poles and distributing it around the globe over long time periods.
Winds
The document discusses different types of winds and how they are caused. It explains that temperature variations between different regions of the Earth due to uneven heating from the sun lead to differences in air pressure and the formation of wind. Winds blow in three main circulation cells in each hemisphere - Hadley, Ferrel, and polar cells - helping to transport heat from the equator to poles. Primary winds include trade winds and westerlies that blow throughout the year between latitudes. Secondary winds change seasonally, like land and sea breezes. Local winds are influenced by local geographic features. Aeolian processes refer to how wind erosion, transportation, and deposition can shape the Earth's surface over time.
Climate classification
The document discusses climate classification systems, focusing on the Koeppen system which categorizes climates based on temperature and precipitation patterns. It examines the major climate types like tropical wet/dry, dry, mesothermal, microthermal, and polar climates. The document also covers topics like the hydrologic cycle, soil moisture, groundwater resources, water usage, and potential impacts of climate change.
Condensation (fogs and clouds)
This document discusses condensation and the formation of fog and clouds. It begins by defining condensation as the process where a gas transforms into a liquid due to changes in pressure and temperature. It then discusses the necessary and sufficient conditions for condensation to occur, including cooling air to below its dew point until saturated and the presence of condensation nuclei. The document proceeds to describe different types of fog like radiation fog, advection fog, and freezing fog that form through various cooling mechanisms. It also covers cloud condensation nuclei and the classification system used to identify different types of clouds.
Lecture Atmospheric Temperature
Temperature is a measure of the average kinetic energy of particles in a substance. It is expressed on comparative scales like Celsius, Fahrenheit and Kelvin. Thermometers use materials like mercury that expand with increasing heat to measure temperature. Temperature inversions occur when warm air is above cooler air near the surface, trapping pollutants. Inversions impact air quality by preventing the dispersion of pollution. Clouds also impact temperature by reflecting sunlight to lower maximum temperatures while trapping heat at night to raise minimums.
Winds & it's types
This document provides information about types of wind and wind mechanisms. It discusses three types of wind: permanent winds like trade winds and westerlies; seasonal winds that change direction with the seasons, like monsoons; and local winds that influence small areas, such as land and sea breezes. It also describes the mechanisms that drive wind circulation globally in three cells - the Hadley cell near the equator, the Ferrell cell in the mid-latitudes, and the polar cell near the poles. Air flows from high to low pressure in each cell, transporting heat around the world.
Rainfall ppt
The document discusses the three main types of rainfall: convectional, orographic, and frontal/cyclonic. Convectional rainfall occurs when warm air near the surface rises vertically due to heating from the sun, cools and condenses to form cumulonimbus clouds and rain. Orographic rainfall occurs when moist air is forced to rise over mountains, cooling and condensing on mountain slopes. Frontal/cyclonic rainfall occurs along boundaries where warm and cold air masses meet, with the warm air forced aloft over the cold air, cooling and producing precipitation along the frontal zone. Diagrams are provided to illustrate each type.
Air masses And FRonts
This document discusses air masses and fronts. It defines air masses as large bodies of air that extend thousands of kilometers and have uniform temperature and humidity. Air masses form over source regions and are classified as either tropical or polar, and continental or maritime. Fronts occur at the boundary between differing air masses and can be cold, warm, stationary or occluded fronts. Each front type brings characteristic weather conditions from rain to thunderstorms as the warmer air is displaced.
Presentation on horizontal differences of Temperature
Horizontal Distribution & Differences of Temperature discusses how several factors influence the horizontal and latitudinal distribution of temperatures around the Earth. Some of the key factors discussed include:
1. Latitudinal variations in solar radiation, which causes temperatures to decrease with increasing latitude away from the equator.
2. The mosaic of land and ocean surfaces, which disrupts the strict latitudinal zonation of temperatures. Proximity to oceans moderates temperatures.
3. Altitude, with temperatures decreasing about 6.5°C for every 1000m increase in elevation due to thinner air.
4. Cloud cover, which influences the difference between day and night temperatures through absorption and reflection of radiation.
Air masses and fronts
- Air masses are large bodies of air with uniform temperature and moisture characteristics that form over source regions. The main types are continental polar (CP), maritime polar (MP), continental tropical (CT), and maritime tropical (MT).
- Fronts occur at boundaries between converging air masses. The main types are cold fronts, warm fronts, stationary fronts, and occluded fronts. Cold fronts bring strong winds and thunderstorms while warm fronts bring gentle rain.
- Frontogenesis is the formation of fronts while frontolysis is the dissipation of fronts. Mid-latitude cyclones form due to frontogenesis between air masses.
Geostrophic wind & Gradient wind
This presentation discusses geostrophic wind and related concepts. It defines the Coriolis force, pressure gradient force, centrifugal force, centripetal force, and geostrophic wind. The Coriolis force causes deflections in winds blowing across the Earth's surface. Pressure gradient force drives wind from high to low pressure. Geostrophic wind blows parallel to isobars in balance with the Coriolis force. Gradient wind occurs aloft where winds flow through curved height contours, remaining parallel to them. Examples are given to illustrate gradient wind. Balanced flow speeds are shown for geostrophic, gradient, cyclostrophic, and inertial winds under different conditions.
Cloud formation
A PPT on cloud formation and a series of why and how questions about clouds. Types of clouds are listed at the end of the lesson.
Solar variation and climatic changes
This document discusses the relationship between solar variation and climatic changes. It introduces that the sun provides the energy that drives Earth's climate and any changes in the sun's output can affect the climate. It then covers topics like how solar variation is measured, records of past solar activity, the relationship between solar activity and historical climate changes like the Little Ice Age, and conclusions that the climate appears to be highly sensitive even to small changes in solar irradiance.
Drought
This document discusses drought, including its types, causes, history, and effects. It defines drought as a prolonged period of abnormally low rainfall that results in water shortage. There are three main types of drought: meteorological, relating to low rainfall; hydrological, regarding low water levels in supplies; and agricultural, when not enough water is available for crops. Common causes include deficiencies in rain, soil erosion, global warming, deforestation. India experiences frequent droughts affecting over 70% of its cultivated land. Specific regions that are prone to drought are identified.
Atmospheric Pressure and Winds
deals with temperature, density, pressure, winds and humidity parameters of the atmosphere; Prssure gradient force, coriolis force, gravity force and friction force and winds and currents, ; pressure lows and highs, atmospheric circulation, winds.
Wind
Wind is caused by differences in air pressure and is responsible for weather patterns globally. The main drivers of wind include solar heating of the atmosphere creating pressure differences, the Coriolis effect which causes winds to bend, and pressure gradient force pushing air from high to low pressure areas. Global wind systems include the trade winds near the equator, the prevailing westerlies in mid-latitudes, and polar easterlies near the poles. Local winds are also influenced by differences in land and sea temperatures.
Loch Ness Monster
a ppt based on the mysterious Loch ness monster about whom people don't know much about. This will guide you.......
if u like it then hit like n for more ppt comment
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What's hot
Climate classification prepared by Dr.BABU N
The document discusses climate classification according to the Koppen system. It begins by defining climate and contrasting it with weather. It then explains the Koppen system classifies climates based on temperature and precipitation zones that correspond with vegetation types. The major climate zones include tropical, dry, mild, and polar climates. Within these zones are subtypes defined by factors like rainfall patterns, proximity to bodies of water, and temperature ranges. The Koppen system provides a standardized way to categorize and compare climates around the world based on observable environmental factors.
General Circulation of the Atmosphere
Air Circulation models, three model cells, planetary & local wind are shown here with flexible example.
Air Masses
There are several major air masses that influence weather patterns:
1) Continental Arctic (cA) air masses are very cold and dry, originating north of the Arctic Circle.
2) Continental polar (cP) air masses are cold and dry, originating in northern Canada and influencing northern US weather.
3) Maritime polar (mP) air masses are cool and moist, originating over the North Atlantic and Pacific and influencing the Pacific Northwest and Northeast.
4) Maritime tropical (mT) air masses are warm and moist, originating in the Gulf of Mexico and influencing the eastern US.
Meterological Instruments
Meteorological instruments are used to measure various atmospheric conditions. Key instruments include thermometers for temperature (degrees Celsius/Fahrenheit), barometers for pressure (hPa, mb), anemometers for wind speed (m/s, km/h), rain gauges for precipitation (mm), and hygrometers for humidity (percent relative humidity). Other instruments such as ceilometers, disdrometers, and weather balloons equipped with radiosondes are used to observe clouds, raindrops, and wind/temperature/pressure profiles at different altitudes. Measurements from these instruments provide critical data for weather forecasts and climate studies.
Meteorology
1. The document discusses key concepts about Earth's atmosphere including how solar radiation drives global climate and local weather patterns.
2. It explains different climate types based on factors like latitude, proximity to bodies of water, and elevation. Humid climates receive more precipitation than potential evapotranspiration while arid climates experience the opposite.
3. Atmospheric circulation patterns like global wind belts and ocean currents play an important role in moderating Earth's climate by transporting heat energy from the tropics to poles and distributing it around the globe over long time periods.
Winds
The document discusses different types of winds and how they are caused. It explains that temperature variations between different regions of the Earth due to uneven heating from the sun lead to differences in air pressure and the formation of wind. Winds blow in three main circulation cells in each hemisphere - Hadley, Ferrel, and polar cells - helping to transport heat from the equator to poles. Primary winds include trade winds and westerlies that blow throughout the year between latitudes. Secondary winds change seasonally, like land and sea breezes. Local winds are influenced by local geographic features. Aeolian processes refer to how wind erosion, transportation, and deposition can shape the Earth's surface over time.
Climate classification
The document discusses climate classification systems, focusing on the Koeppen system which categorizes climates based on temperature and precipitation patterns. It examines the major climate types like tropical wet/dry, dry, mesothermal, microthermal, and polar climates. The document also covers topics like the hydrologic cycle, soil moisture, groundwater resources, water usage, and potential impacts of climate change.
Condensation (fogs and clouds)
This document discusses condensation and the formation of fog and clouds. It begins by defining condensation as the process where a gas transforms into a liquid due to changes in pressure and temperature. It then discusses the necessary and sufficient conditions for condensation to occur, including cooling air to below its dew point until saturated and the presence of condensation nuclei. The document proceeds to describe different types of fog like radiation fog, advection fog, and freezing fog that form through various cooling mechanisms. It also covers cloud condensation nuclei and the classification system used to identify different types of clouds.
Lecture Atmospheric Temperature
Temperature is a measure of the average kinetic energy of particles in a substance. It is expressed on comparative scales like Celsius, Fahrenheit and Kelvin. Thermometers use materials like mercury that expand with increasing heat to measure temperature. Temperature inversions occur when warm air is above cooler air near the surface, trapping pollutants. Inversions impact air quality by preventing the dispersion of pollution. Clouds also impact temperature by reflecting sunlight to lower maximum temperatures while trapping heat at night to raise minimums.
Winds & it's types
This document provides information about types of wind and wind mechanisms. It discusses three types of wind: permanent winds like trade winds and westerlies; seasonal winds that change direction with the seasons, like monsoons; and local winds that influence small areas, such as land and sea breezes. It also describes the mechanisms that drive wind circulation globally in three cells - the Hadley cell near the equator, the Ferrell cell in the mid-latitudes, and the polar cell near the poles. Air flows from high to low pressure in each cell, transporting heat around the world.
Rainfall ppt
The document discusses the three main types of rainfall: convectional, orographic, and frontal/cyclonic. Convectional rainfall occurs when warm air near the surface rises vertically due to heating from the sun, cools and condenses to form cumulonimbus clouds and rain. Orographic rainfall occurs when moist air is forced to rise over mountains, cooling and condensing on mountain slopes. Frontal/cyclonic rainfall occurs along boundaries where warm and cold air masses meet, with the warm air forced aloft over the cold air, cooling and producing precipitation along the frontal zone. Diagrams are provided to illustrate each type.
Air masses And FRonts
This document discusses air masses and fronts. It defines air masses as large bodies of air that extend thousands of kilometers and have uniform temperature and humidity. Air masses form over source regions and are classified as either tropical or polar, and continental or maritime. Fronts occur at the boundary between differing air masses and can be cold, warm, stationary or occluded fronts. Each front type brings characteristic weather conditions from rain to thunderstorms as the warmer air is displaced.
Presentation on horizontal differences of Temperature
Horizontal Distribution & Differences of Temperature discusses how several factors influence the horizontal and latitudinal distribution of temperatures around the Earth. Some of the key factors discussed include:
1. Latitudinal variations in solar radiation, which causes temperatures to decrease with increasing latitude away from the equator.
2. The mosaic of land and ocean surfaces, which disrupts the strict latitudinal zonation of temperatures. Proximity to oceans moderates temperatures.
3. Altitude, with temperatures decreasing about 6.5°C for every 1000m increase in elevation due to thinner air.
4. Cloud cover, which influences the difference between day and night temperatures through absorption and reflection of radiation.
Air masses and fronts
- Air masses are large bodies of air with uniform temperature and moisture characteristics that form over source regions. The main types are continental polar (CP), maritime polar (MP), continental tropical (CT), and maritime tropical (MT).
- Fronts occur at boundaries between converging air masses. The main types are cold fronts, warm fronts, stationary fronts, and occluded fronts. Cold fronts bring strong winds and thunderstorms while warm fronts bring gentle rain.
- Frontogenesis is the formation of fronts while frontolysis is the dissipation of fronts. Mid-latitude cyclones form due to frontogenesis between air masses.
Geostrophic wind & Gradient wind
This presentation discusses geostrophic wind and related concepts. It defines the Coriolis force, pressure gradient force, centrifugal force, centripetal force, and geostrophic wind. The Coriolis force causes deflections in winds blowing across the Earth's surface. Pressure gradient force drives wind from high to low pressure. Geostrophic wind blows parallel to isobars in balance with the Coriolis force. Gradient wind occurs aloft where winds flow through curved height contours, remaining parallel to them. Examples are given to illustrate gradient wind. Balanced flow speeds are shown for geostrophic, gradient, cyclostrophic, and inertial winds under different conditions.
Cloud formation
A PPT on cloud formation and a series of why and how questions about clouds. Types of clouds are listed at the end of the lesson.
Solar variation and climatic changes
This document discusses the relationship between solar variation and climatic changes. It introduces that the sun provides the energy that drives Earth's climate and any changes in the sun's output can affect the climate. It then covers topics like how solar variation is measured, records of past solar activity, the relationship between solar activity and historical climate changes like the Little Ice Age, and conclusions that the climate appears to be highly sensitive even to small changes in solar irradiance.
Drought
This document discusses drought, including its types, causes, history, and effects. It defines drought as a prolonged period of abnormally low rainfall that results in water shortage. There are three main types of drought: meteorological, relating to low rainfall; hydrological, regarding low water levels in supplies; and agricultural, when not enough water is available for crops. Common causes include deficiencies in rain, soil erosion, global warming, deforestation. India experiences frequent droughts affecting over 70% of its cultivated land. Specific regions that are prone to drought are identified.
Atmospheric Pressure and Winds
deals with temperature, density, pressure, winds and humidity parameters of the atmosphere; Prssure gradient force, coriolis force, gravity force and friction force and winds and currents, ; pressure lows and highs, atmospheric circulation, winds.
Wind
Wind is caused by differences in air pressure and is responsible for weather patterns globally. The main drivers of wind include solar heating of the atmosphere creating pressure differences, the Coriolis effect which causes winds to bend, and pressure gradient force pushing air from high to low pressure areas. Global wind systems include the trade winds near the equator, the prevailing westerlies in mid-latitudes, and polar easterlies near the poles. Local winds are also influenced by differences in land and sea temperatures.
What's hot (20)
Presentation on horizontal differences of Temperature
Presentation on horizontal differences of Temperature
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Loch Ness Monster
a ppt based on the mysterious Loch ness monster about whom people don't know much about. This will guide you.......
if u like it then hit like n for more ppt comment
Introduction to anatomy
the anatomy as a basic science, the importance to know its definition and related terminology to be familiar with others of the medical team. including body position, anatomical planes terms of direction and movements
the field of anatomy includes studding the body systems, the related cavities of certain systems
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ANTICYCLONES QUESTIONS
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ANTICYCLONES
- 2. Remember anticyclones form as a result of air piling up aloft. This encourages air to subside / sink down. As the air sinks, it warms, this increases the amount of water the air can hold, and thus keeps the sky relatively cloud free. Leading edge
- 3. AAnnttiiccyycclloonneess,, HHiigghhss AAnnttiiccyycclloonneess oovveerr tthhee BBrriittiisshh IIsslleess ooccccuurr ffrreeqquueennttllyy,, bbuutt aarree lleessss ccoommmmoonn tthhaann ddeepprreessssiioonnss.. AAnnttiiccyycclloonneess ggiivvee rriissee ttoo ddiiffffeerreenntt wweeaatthheerr ccoonnddiittiioonnss,, ddeeppeennddiinngg uuppoonn tthhee ttiimmee ooff yyeeaarr.. AAnnttiiccyycclloonneess mmoovvee sslloowwllyy aanndd aarree ssttaabbllee ffeeaattuurreess.. TThheeyy ccaann bbee 33000000kkmm wwiiddee –– mmuucchh bbiiggggeerr tthhaann ddeepprreessssiioonnss HHiigghh pprreessssuurree ssyysstteemmss tteenndd ttoo bbee lloonnggeerr llaassttiinngg tthhaann ddeepprreessssiioonnss,, oonnccee ‘‘bblloocckkeedd’’ tthheeyy ccaann llaasstt uupp 1100 ddaayyss.. TThheeyy ddeefflleecctt ddeepprreessssiioonnss aawwaayy ffrroomm UUKK && WWeesstteerrnn EEuurrooppee..
- 4. AAnnttiiccyycclloonneess aarree cchhaarraacctteerriisseedd bbyy:: HHiigghh pprreessssuurree rreeaaddiinnggss iinn tthhee mmiiddddllee.. FFaarr aappaarrtt iissoobbaarrss == ccaallmm wwiinndd.. TThhee aaiirr ssuubbssiiddeess ((ssiinnkkss)).. IItt wwaarrmmss aaddiiaabbaattiiccaallllyy wwhhiicchh lleeaaddss ttoo aa ddeeccrreeaassee iinn rreellaattiivvee hhuummiiddiittyy == llaacckk ooff cclloouudd && ddrryy ccoonnddiittiioonnss.. AAiirr mmoovviinngg aawwaayy ffrroomm tthhee cceennttrree ooff tthhee hhiigghh.. AAiirr ssppiinnss cclloocckkwwiissee aarroouunndd ffrroomm tthhee hhiigghh.. TThheeyy nnoorrmmaallllyy ttrraavveell ttoo tthhee BBrriittiisshh IIsslleess ffrroomm mmaaiinnllaanndd EEuurrooppee.. HHiigghh pprreessssuurree ssyysstteemmss ffoorrmm ccoommmmoonnllyy oovveerr tthhee AAzzoorreess –– ‘‘AAzzoorreess HHiigghh’’..
- 5. Anticyclones give rriissee ttoo ddiiffffeerreenntt ccoonnddiittiioonnss,, ddeeppeennddiinngg oonn tthhee ttiimmee ooff yyeeaarr.. WWiinntteerr CCoolldd ddaayy ttiimmee tteemmppss,, ffrroomm bbeellooww 00oocc ttoo 55oocc VVeerryy ccoolldd nniigghhtt ttiimmee tteemmppss –– ffrroossttss bbeellooww 00oocc TThhiicckk mmoorrnniinngg ffooggss aarree oofftteenn pprreesseenntt SSuummmmeerr HHoott ddaayy ttiimmee tteemmpp,, oovveerr 2255oocc WWaarrmm nniigghhtt ttiimmee tteemmppss MMaayy nnoott ffaallll bbeellooww 1155oocc GGeenneerraallllyy cclleeaarr sskkiieess bbyy ddaayy && nniigghhtt
- 6. AAnnttiiccyycclloonneess ggiivvee rriissee ttoo ddiiffffeerreenntt ccoonnddiittiioonnss,, ddeeppeennddiinngg oonn tthhee ttiimmee ooff yyeeaarr.. WWiinntteerr LLooww lleevveell cclloouudd mmaayy lliinnggeerr aanndd rraaddiiaattiioonn ffoogg mmaayy rreemmaaiinn iinn llooww llyyiinngg aarreeaass CCaauusseess hhiigghh lleevveellss ooff aaiirr ppoolllluuttiioonn iinn uurrbbaann aarreeaass aass ppoolllluuttaannttss aarree ttrraappppeedd bbyy tteemmppeerraattuurree iinnvveerrssiioonn SSuummmmeerr HHaazzyy ssuunnsshhiinnee iinn ssoommee aarreeaass EEaarrllyy mmoorrnniinngg mmiissttss wwhhiicchh ddiissppeerrssee qquuiicckkllyy HHeeaavvyy ddeeww iinn tthhee mmoorrnniinnggss EEaasstt ccooaasstt hhaass sseeaa ffrreettss oorr hhaaaarrss ((oonnsshhoorree wwiinnddss)) TThhuunnddeerr ssttoorrmmss ccaann ooccccuurr wwhheenn RRHH iiss hhiigghh ((SSppaanniisshh PPlluummee))