Biparjoy and the Western cyclones trade influence

Biparjoy is the name given by Bangladesh to the cyclone which means The word means 'disaster' or 'calamity. Biparjoy, only the third tropical cyclone to strike western India in 60 years, intensified to a “very severe cyclonic storm” before making landfall in the Kutch region of Gujarat, close to the Pakistan border. Biparjoy as we know is a wild spreading cyclonic storm in the Arabian Sea which is to the western side of India. According to the Indian Meteorological Department (IMD), Most cyclones occur in the east of India which is in the Bay of Bengal but in the last few decades, this trend is changing. Let's analyze this changing trend by following.

Why does the traditionally west Indian Ocean experience less number of tropical cyclones?

The ratio of the Arabian Sea & Bay of Bengal for the occurrence of cyclones respectively is 1:4.

1. The average temperature- of the Arabian Sea is low compared to that of any of Bengal and even it has higher salinity content in its waters.

2. Water Availability- Bay of Bengal has an abundant source of a continuous flow of freshwater resources which prevents intermixing of water from a surface and the seeing total beneath it. Whereas, in the Arabian Sea there is not much of it.

3. , of the Land- As The shapeBay of Bengal is a bay which weakens the wind system and it allows the winds to spin faster. While the Arabian has more of a gulf side.

4. Sea of tropical cyclones- From Pacific Ocean.

Changing nature of Arabian Sea:-

• Sea surface temperature- 1.2 Offshoots degrees to Celsius 1.4-degree in recent decades.

• Frequency of cyclonic Celsius storms- There is an increase of 52% in the occurrence of cyclones in the Arabian Sea while also the Seaseeingan 8% decrease in frequency in the Bay of Bengal.

• The total duration of cyclones- We have seen an 80% increase in seeing the total duration of cyclone occurrence.

Impacts of how climate change has led to an increase in the frequency and intensity of cyclones in India:-

According to the Council on Energy, Environment, and Water (CEEW) India, in the last 50 years, has recorded a 12-ford surge in the number of cyclonic events. Climate change has increased cyclonic events in the following ways:-

1. Increased Sea Surface temperature: Man-made climate has caused, the global ocean to absorb 90% of the excess heat generated, leading to higher convection and rapid intensification of cyclones.

2. Rising Sea Level: On account of Antarctica melting, there has been increased moisture availability for cyclones.

3. Micro-climatic changes on land: Local heating of coastal land affects the adjacent ocean, further heating it up.

4. Changing weather events: El Nino and rising marine heat waves lead to prolonged warm periods over oceans by reducing the ocean upwellings.

5. Higher Atmospheric moisture: Anthropogenic warming increases atmospheric moisture content resulting in higher tropical cyclone rainfall.

6. Changes in wind systems: Occasionally intense winds drive the low-pressure regions and other areas, raising the frequency in those areas. For example, the Gulab cyclone shifted from the Bay of Bengal to the Arabian Sea.

In this regard, the government must speed up the implementation of the second phase of the National Cyclone Risk Mitigation project especially on the western coasts in order to reduce the potential losses of life and property.