Yes. The pulse crops got severely affected due to this

There can be several factors that contribute to the fluctuation and heavy rainfall patterns in South Asia. Some possible causes include:

1. Monsoon dynamics: The South Asian monsoon is a major weather system in the region and can bring heavy rainfall. Fluctuations in the strength, timing, and duration of the monsoon can impact rainfall patterns. Factors such as changes in sea surface temperatures, atmospheric pressure systems, and El Niño-Southern Oscillation (ENSO) patterns can influence the monsoon.

2. Climate change: Climate change is altering weather patterns worldwide, including rainfall patterns. Rising global temperatures can lead to increased evaporation, which in turn may result in more intense rainfall events. Climate change can also affect large-scale atmospheric circulation patterns, which can impact rainfall variability.

3. Local topography and geography: South Asia has diverse topography, including mountains, coastal areas, and plains. These different landforms can influence local weather patterns and rainfall. For example, mountains can enhance rainfall through orographic lifting, while coastal areas can experience increased moisture due to proximity to the ocean.

4. Human activities: Land-use changes, such as deforestation or urbanization, can alter local weather patterns and impact rainfall. Deforestation reduces the amount of evapotranspiration, which can affect regional precipitation patterns. Similarly, urbanization can contribute to the formation of "urban heat islands," leading to localized rain patterns.

5. Natural climate variability: Natural climate phenomena, such as the Indian Ocean Dipole (IOD) and the Arctic Oscillation, can influence rainfall patterns in South Asia. These phenomena occur over periods of months to years and can cause shifts in atmospheric circulation patterns, affecting regional rainfall.

It's important to note that the causes of fluctuating and heavy rainfall patterns in any specific year can be complex and influenced by a combination of these factors. Weather and climate variability are natural occurrences, but continued monitoring and research can help evaluate and manage the impacts on crops and human life in the region.