A common feature of the weather during the pre-monsoon season, i.e., March, April and May, over the Indian region is the outburst of severe local convective storms which often turn into thunderstorm and lightning. The intense convection activity due to strong heating of land mass over Chhotanagpur pRead more
A common feature of the weather during the pre-monsoon season, i.e., March, April and May, over the Indian region is the outburst of severe local convective storms which often turn into thunderstorm and lightning. The intense convection activity due to strong heating of land mass over Chhotanagpur plateau and movements towards southeast and mixing with warm air mass triggers the Nor Westers to develop which is locally named as Kal-Baisakhi (Bengal region) and Bardoli Cheerha (Assam). Apart from this, Mango Showers or Blossom Showers in Kerala and coastal Karnataka regions are some famous local storms of pre-monsoon season in India. Thunderstorms are characterized by towering cloud masses (mostly Cumulonimbus) with sudden electrical discharges manifested by a lightning and thunder enjoined with vigorous circulations and thus has the potential to spawn severe weather.
Formation of thunderstorms evolves in three stages
1.Cumulus Stage
- The Sun heats the Earth’s surface during the day.
- Warm plume of rising air starts.
- Condensational heating causes air to remain warmer than the surrounding environment.
- If the air is moist, then the warm air condenses into a cumulus cloud.
2. Mature Stage
- When the cumulus cloud becomes very large, the water in it becomes large and heavy.
- Raindrops start to fall through the cloud and meanwhile, cool dry air starts to enter the cloud.
- Because cool air is heavier than warm air, it starts to descend in the cloud (known as a downdraft). The downdraft pulls the heavy water downward, making rain.
- This cloud has become a cumulonimbus cloud because it has an updraft, a downdraft, and rain.
- Thunder and lightning start to occur, as well as heavy rain.
3.Dissipating Stage
- After some time, the thunderstorm begins to dissipate.
- This occurs when the downdrafts in the cloud begin to dominate the updraft.
- Since warm moist air can no longer rise, cloud droplets can no longer form.
- The storm dies out with light rain as the cloud disappears from bottom to top.
Impact of pre-monsoonal rainfall
- Southern India
- Mango Shower: A common phenomenon in Kerala and coastal areas of Karnataka. They help in the early ripening of mangoes.
- Blossom Shower: With this shower, coffee flowers blossom in Kerala and nearby areas.
- Eastern India: Nor Westers are dreaded evening thunderstorms in Bengal and Assam. However, these showers are useful for tea, jute and rice cultivation.
- Northern India: The pre-monsoon rainfall is vital for soil moisture required to raise paddy nurseries and subsequently to sow the crops.
- Western India: In Sahyadri range, Pre-monsoon showers are important for the growth of insects, which help in maintaining the fauna in the region.
Pre-Monsoon storms mark the beginning of agricultural activities as it helps in ploughing and getting the field ready for the season. However, these storms are also associated with hailstorm and high speed winds of short duration, which are harmful for crops like mango and other standing crops.
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With growing technology all over the world which has lead to globalisation , it came at the cost of climate change. In recent years it has became an expensive deal to manage biodiversity losses through sustainable practices. Reasons that lead to biodiversity loss due to globalization and environmenRead more
With growing technology all over the world which has lead to globalisation , it came at the cost of climate change. In recent years it has became an expensive deal to manage biodiversity losses through sustainable practices.
Reasons that lead to biodiversity loss due to globalization and environmental change
With advent of new technologies from telegraph, telephones, emails to meassaging applications connectivity all around the world got increased which gave a boost to economy through trade.
In today’s generation social media and news channels are very much active as within seconds we can know about any corner of the world with help of satellites.
Globalization has evolved through out the years but in the hoard of profits and making money people ignored the harmful impact we are creating to the enviornment.
2. Environment losses
To increase connectivity and trade through technology, human started exploiting the natural resources for their benefit.
Clearing forests for building concreate jungles, Mining practices for oil or any precious metals, polluting environment, poaching are few examples which led to biodiversity losses in the world.
3. Urbanization- With enchancement of technology along the lines of globalization, more of the population are working in service sector leading to more urban settlements due to increase of companies and earning of good money is making villages empty which is also one of the major concern for depletion of biodiversity.
Method we need to focus to tackle biodiversity loss
These are some of the major steps that can be taken by an individual and countries to reduce biodiversity loss and conserve them.
Even though damage is done to our biodiversity in recent years, we can take some initiative at local, state, national and international level to save the remaining biodiversity to our best we can so as to reduce the climate change effects on Earth. Summits like Rio de janeio, Montreal protocol and organisations of United Nation Through IUCN are working towards saving the flora and fauna of the World. Sustainable practices and Awareness within people is a great weapon to save our biodiversity.
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