The largest number of temperate cyclones originate mostly over the

Temperate cyclones, also known as extratropical or mid-latitude cyclones, originate in the mid-latitudes (35° to 65° N and S) through frontal cyclogenesis [2]. These systems are most active during winter and late autumn [3]. While they occur in both the North Pacific and North Atlantic, the North Atlantic Ocean is recognized as the region with the highest frequency and intensity of these storms due to the sharp temperature gradients between the warm Gulf Stream and cold polar air masses. The North Atlantic serves as a primary track for these cyclones, which frequently move toward Northwest Europe [1]. These cyclones have a dynamic origin involving the interaction of contrasting air masses, unlike tropical cyclones which have a thermal origin [2]. The North Atlantic's unique atmospheric and oceanic conditions facilitate the most frequent development of these frontal systems compared to other basins like the Indian or Arctic Oceans.

Sources

1. [1] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 28: Temperate Cyclones > 28. Temperate Cyclones > p. 395
2. [2] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 28: Temperate Cyclones > 28.2. Fronts > p. 398
3. [3] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 28: Temperate Cyclones > Seasonal Occurrence of Temperate Cyclones > p. 406