A coolsummeror pre-monsoon season this year can impact the onset and progress of the southwest rains in India, top weatherexpertsare of the view.
If the landmass of India tends to cool down during summer, as happened this year, the temperature gradient between the land and sea decreases. This can lead to a delay in the onset of the southwestmonsoonover the Indian subcontinent, which normally sets overKeralaaround June 1.
The evolution of wind and convective patterns in the Asia-Pacific region are also important. A cyclone is also soon likely to form over the Bay of Bengal. This can play an important role in the evolution of thermal, dynamic and convective patterns, leading to monsoon onset over the region. The next few days would be crucial to determine the timing of the monsoon onset this year . IMDs forecast on monsoon onset will be released soon, based on these parameters.