Tag: winds

Coastal areas experience less contrasts in temperature conditions due to moderating effect of the seas.  The large water bodies helps in moderating temperature. Water has a higher heat capacity than soil and rock, so the ocean takes much longer to heat and to cool than the land.

An anemometer is a device specifically designed and used for measuring wind speed and direction, making it the correct meteorological instrument. A barometer measures atmospheric pressure, a thermometer measures temperature, and a hygrometer measures humidity.

Trade winds are the prevailing pattern of easterly surface winds found in the tropics, blowing from the subtropical high-pressure belts (30 degrees N/S) toward the equatorial low-pressure belt.

Loo is the hot wind blowing during the hot westher season. It is strong and dusty wind. It blows during day time over northern and northwestern india. 

• Among the two main agents of erosion in India, wind erosion contributes to erosion in close to 10% area in India. Approximately 90% area is eroded by water.
• Hence option A is correct.

Coromandal coast receives winter rainfall because of the retreating monsoon and the North-east Monsoon winds which pass over the Bay of Bengal. There they get moisture and when they reach the Tamil Nadu coasts they cause rainfall there. During the winter season, the northeast trade winds prevail over the country.

The monsoon is a seasonal modification of the general planetary wind system. Monsoon winds are most powerful India and China. During summer, the interior of Asia become hot and low pressure develops there. On the other hand, the water surface of Indian ocean remains cooler and the pressure gradient is towards the heated interior. So monsoon wind blows from water to land, it is moist and brings lots of rain. In winter the water is warmer than the land surface. As a result, the wind blows from the interior towards the ocean so it is cold and dry. 

Wind rose is a tool which gives us the idea of how typically the speed and direction of the wind are distributed at a particular location. It consist of 8 compass points. 

Wind Rose is the instrument to measure wind speed and direction of the wind. They help to identify the direction and frequency of wind in a particular place. One of the important use of Wind Rose in the construction of airport runways, so that the airplane can take the best takeoff and landing point towards and away from the wind.

The winds which change their direction periodically with the change in season are known as periodic winds. They blow at regular intervals. They blow during particular time of the day or year. Localized differences in pressure and temperature are the main cause of periodic winds. For example, land and sea breezes and the seasonal wands.