Which of the following are important features of extratropical cyclon...
- The extratropical cyclones have a clear frontal system which is not present in the tropical cyclones.
- They cover a larger area and can originate over the land and sea, whereas the tropical cyclones originate only over the seas and on reaching the land they dissipate.
- The extratropical cyclone affects a much larger area as compared to the tropical cyclone.
- Moreover, the wind velocity in a tropical cyclone is much higher, and it is more destructive. The extratropical cyclones move from west to east, but tropical cyclones move from east to west. No jet streams are required for its movement, so 3 is wrong.
Which of the following are important features of extratropical cyclon...
Extratropical Cyclones:
Extratropical cyclones, also known as mid-latitude or frontal cyclones, are large-scale low-pressure systems that occur in the middle and high latitudes outside the tropics. These cyclones are responsible for most of the weather patterns experienced in the middle latitudes, including strong winds, rain, and snow.
Important Features of Extratropical Cyclones:
1. They originate only over the seas or oceans: This statement is incorrect. While many extratropical cyclones do form over the seas or oceans, they can also form over land. Cyclones that form over land are known as continental cyclones. Therefore, this statement is not an important feature of extratropical cyclones.
2. They require a frontal system to get activated: This statement is correct. Extratropical cyclones are typically associated with the interaction of warm and cold air masses, resulting in the formation of a frontal system. The presence of a frontal system is necessary for the development and intensification of extratropical cyclones. Fronts are boundaries between air masses with different temperatures and densities, and the interaction between these air masses leads to the formation of the cyclone.
3. Since they can move only vertically above, they must be carried laterally by jet streams to be effective: This statement is incorrect. Extratropical cyclones are not limited to moving only vertically above. They are characterized by their cyclonic circulation, which involves both vertical and horizontal movement of air. While jet streams can influence the movement and intensity of extratropical cyclones, they are not required for their effectiveness.
Conclusion:
Out of the given statements, only statement 2 is an important feature of extratropical cyclones. These cyclones require a frontal system to get activated and are associated with the interaction of warm and cold air masses. They can form over both land and seas/oceans, and their movement is not limited to vertical displacement above. Therefore, the correct answer is option 'A' (2 only).