Bengaluru getting hotter every day

Bengaluru getting hotter every day

Bengaluru getting hotter every day.  The Bendakaluru has become baking Bengaluru.  The maximum temperature on 25th March was 35.4 degree celsius.

Capital of Karnataka – Bengaluru :

Bengaluru city is the center of India’s high-tech industry, the city is also known for its parks and nightlife. By Cubbon Park, Vidhana Soudha is a Neo-Dravidian legislative building. Former royal residences include 19th-century Bangalore Palace, modelled after England’s Windsor Castle, and Tipu Sultan’s Summer Palace, an 18th-century teak structure.

Area : 709 km²

Elevation  :920 m

Bengaluru weather & Topography :

Bengaluru has a tropical savanna climate with distinct wet and dry seasons. Due to its high elevation, Bengaluru usually enjoys a more moderate climate throughout the year, although occasional heat waves can make summer somewhat uncomfortable.  The coolest month is January with an average low temperature of 15.1 °C (59.2 °F) and the hottest month is April with an average high temperature of 35 °C (95 °F).

The highest temperature ever recorded in Bengaluru is 39.2 °C (103 °F) (recorded on 24 April 2016) as there was a strong El Nino in 2016.   There were also unofficial records of 41 °C (106 °F) on that day. The lowest ever recorded is 7.8 °C (46 °F) in January 1884. Winter temperatures rarely drop below 14 °C (57 °F), and summer temperatures seldom exceed 36 °C (97 °F).

Bengaluru  receives rainfall from both the northeast and the southwest  monsoons and the wettest months are September, October and August, in that order.  The summer heat is moderated by fairly frequent thunderstorms  which occasionally cause local flooding. Most of the rainfall occurs during late afternoon/evening or night and rain before noon is infrequent.

November 2015 (290.4 mm) was recorded as one of the wettest months in Bangalore with heavy rains causing severe flooding in some areas, and closure of a number of organisations for over a couple of days. The heaviest rainfall recorded in a 24-hour period is 179 mm (7 in) recorded on 1 October 1997. 

Bengaluru becoming hotter :

According to Mr. Prakash Belawadi the top five reasons as to why he thinks the Bengaluru city is getting hotter every year   due to :

  1. The BDA and other decision making members are compromising on green belt and green cover.
  2. Instead of moving development to the Satellite zone beyond the original green belt, they kept altering master plans and destroyed both the character and structure of the old city, increasing heat retaining buildings.
  3. The development model privileged private vehicles over public transport, cycling to working, favouring the ‘vision’ of the new economy.  For Eg. Road widening, but footpath shrinking, no metro lines to all parts of the city, free and irresponsible parking even on busy narrowed roads.  This has resulted in 5.5 to 6 million vehicles in namma Bengaluru, 14 time more than the roads can handle in the city.  This is causing spewing heat and poison into the ambient air.
  4. Excessive concrete and asphalt surfacing preventing absorption of water into the soil, increasing run off from the city, which stands 3000ft above MSL.
  5. Lastly the wilful destruction of old valleys and channels, which have destroyed the old water bodies of the city built by the founders and protected bythe Dewans of Old Mysore.

Bengaluru – The Hot Dome :

Materials like concrete and steel absorb and hold heat significantly when compared to soil and vegetation. The urban built-up area with its water-tight layer of concrete is hotter than the surrounding rural areas. This creates an umbrella of hot air over the built-up area of the city and is called the ‘climatological dome’ or ‘urban heat-island’.

 Air pollutants, vehicular movements, loss of tree cover and other metabolic processes add to the heat increasing temperatures in the dome.

A mobile survey of air temperatures discovered heat islands in Bengaluru way back in 1977 as documented in the Bangalore Gazetteer of 1990, of Government of Karnataka. The built areas of Rajajinagar were found to be warmer than the vegetated Cubbon Park and Lalbagh. Another survey in 1985, which is also documented in the same Gazetteer, found the built-up areas to be 2.5oC to 3.2oC warmer than Lalbagh and Cubbon Park.

Bengaluru Scenario :

Day temperatures are peaking at over 32 – 35 degree Celcius and the worst bit is it is still March. In fact, experts say that it is only going to get hotter in the days to come. It is not only Bengaluru, but the entire State is experiencing such hot weather.

Rapid increase in population has led to the development of infrastructure projects over green areas and lakes.

Normally, one will find March and April a bit on the hotter side but it starts to  rain from May.  There is no specific timing for rain and as the temperature in Bengaluru  would reach to its peak, the rain would bring the temperature down to normal level.

March getting hotter in Bengaluru :

The current temperature are 2 to 3 degrees warmer than normal compared to past 3 to 4 years.  This week there will be no rainfall.  The maximum temperature may go u to 36 or 37 degrees and the minimum will remain 21-22c.

With mercury soaring high by the day, this season the temperature may hit 38 – 39 degree Celsius.

Bengaluru city is experiencing a rise in mercury levels for the last 6-7 days.  It is going to get worse.  The temperature is expected to rise gradually from now on and brace yourself for hot months ahead.  March to May is considered really hot.

Conclusion :

It is the impact of climate change. The seasons are turning into extremes and soon there will be only two seasons – summer and winter ( extremes) . The rainy monsoon have already shifted and expected to shift more. The vertical rainfall or the low pressure rainfall will overtake monsoon in near future if the rate of climate change goes by this rate.

There has been a 1028% increase in concrete area, 88% loss of vegetation and 79% loss of water bodies in the last 4 decades.  If the trend continues, by 2025, 95.5% of Bengaluru will be concretized and the temperature may hit 42-44 degrees.

It is our duty now to plant more trees and use public transportation and do car-pools, which we can do immediately and on our own.

Contribution from everybody  to make Bengaluru cool :

Temperatures can be reduced by :

  1.  Reduce the usage of vehicles/if not possible use concept of pool car, so that number of cars reduces.
  2. Plant one tree and maintain it.
  3. Recommend this two things to others and  make sure that they’re on it.

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