Sea Breeze and Land Breeze

Overview

If you take a walk along a dry beach during a hot early afternoon, the moment you put your barefoot on the sand, you will start jumping and hoping immediately and try to reach the seawater to cool your scorching feet. Though the sun heats both the land and water, they do not heat up or cool down at a similar pace. The Breeze is generated at the coastal areas due to differential heating & cooling of land and sea.


What is a Breeze?

The light and the cold wind is known as Breeze. It is one of the pleasant things to experience the feeling of a cool and gentle breeze during a hot summer on the beach.


Types of Breeze:

  • Sea Breeze

  • Land Breeze

Land breeze and sea breeze take place near large bodies of water. 

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The main difference between both types of Breeze is that water retains the heat for a longer time. The temperature difference between land and water causes a respective change in the densities of the air above their surface. The alternating air movement is caused by the resulting low pressure, which causes the Breeze. People living close to the coastline experience cool sea breeze during the day and warm land breeze during the night. These breezes also play a crucial role in the temperature and humidity level and precipitation rates.


The land breeze and sea breeze diagram have been given below, along with how they occur.


What is a Land Breeze?

The flow of the wind from land to water is known as the land breeze; it is also sometimes called offshore wind. When the temperature of the land is lower compared to the adjacent water body, it happens during the night and early morning. During the last weeks of summer, the land breeze lasts longer because the temperature of the sea will increase the land's daily temperature variation.


How Does Land Breeze Occur?

The following formation outlines how the land breeze is formed: 

  1. During the night, the land cools down quickly as there is no sun to provide the heat, and heats up the surrounding air.

  2. But compared to land, water bodies retain the heat for a longer duration, which causes the air above it to have lower density and rise. 

  3. High pressure is formed above the land; at the same time, low pressure is formed above the water.

  4. The movement of the dense air above the land takes place from land to space over water.

  5. The cooler Breeze comes from shore and is known as a land breeze, as the movement of the winds takes place from high pressure to low-pressure areas.

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What Is a Sea Breeze?

The sea breeze is known as the movement of winds from large water bodies like sea and ocean; they are also known as onshore winds. The occurrence of these Breeze occurs during the spring and summer season as there is more temperature difference between the land and the adjacent water bodies. This is mostly observed in the afternoon when the land reaches the maximum heat level. Compared to the land breezes, the sea breezes are more reliable during the winter season, which is also attributed to the vast temperature difference between the sea and land, which might also cause thunderstorms, and which mostly bring in the rains. Due to the fewer temperature differentials during the autumn and winter months, the sea breezes are not that apparent.


How does Sea Breeze Occur?

The following formation outlines how the sea breeze is formed: 

  1. The land gets quickly heated up by the sun during the daytime.

  2. The air above the water gets less warm compared to the air above the land.

  3. Due to the warmer air above the land, it begins to rise in the air due to being less dense.

  4. Low pressure is formed.

  5. As the warm land air moves up, the denser air above the water moves to take the space above the land. This cooler air is known as a sea breeze.

FAQ (Frequently Asked Questions)

1. Write Few Lines as Summary of Land Breeze & Sea Breeze.

Summary of Land Breeze vs. Sea Breeze

  • The occurrence of both breezes is near coastal areas.

  • The precipitation rates, atmospheric temperature, and humidity levels are affected by the land and sea breezes.

  • Land breezes arise from land, while sea breezes arise from the sea or other large bodies of water.

  • The vital difference is due to the property of water to retain heat and warm up on a longer duration as compared to land.

  • The offshore winds are known as a land breeze, and onshore winds are known as a sea breeze.

  • While a land breeze occurs at night, a sea breeze occurs in the daytime.

  • One will experience land breezes more during autumn and winter while sea breezes are experienced during the spring and summer months. 

  • Compared to a land breeze, sea breezes are generally stronger. This makes sea breezes quite important to glider pilots and other related aircraft operators.

  • Typically, land breezes are gentler than sea breezes.

  • Land breezes are normally dry winds, while sea breezes have additional moisture.

  • Unlike sea breezes, land breezes are principal during winter months.

  • Unlike land breezes, sea breezes can suggestively lower air temperature.