Biodiversity & Environment
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India Warming: Trends
- 17 Jan 2019
- 3 min read
Recently, the India Meteorological Department (IMD) stated “2018” as the sixth warmest year on record, with the average temperature over India being “significantly above normal”.
- The IMD said that 11 of the 15 warmest years were during the recent past fifteen years (2004-18). This increase in temperatures will likely lead to more extreme weather events.
India Meteorological Department (IMD)
- IMD was established in 1875.
- It is an agency of the Ministry of Earth Sciences of the Government of India.
- It is the principal agency responsible for meteorological observations, weather forecasting and seismology.
Extreme Weather Events of 2018
- The IMD specifically underlined two extreme weather events:
- The Kerala floods in August were due to unusually heavy rains which are very rare over Kerala.
- The thunderstorm activity over the northern states in May-June of 2018 was also rare due to prolonged days of activity and severity.
- Temperatures are increasing during both day and night time.
- Heat waves are increasing in frequency as well as magnitude.
- Extreme rainfall and rainstorms which can cause floods are increasing.
- Dry spell duration is also increasing.
- Heat and cold waves, snowfall, thunderstorms, dust storms, lightning and floods are increasing.
- India witnessed increased cyclonic storms (Titli, Luban, Gaja, Daye, Phethai) that formed over the northern Indian Ocean.
- Flood and heavy rain related incidents reportedly claimed over 800 lives from different parts of the country (viz. northern/northeastern, central & peninsular parts) during pre-monsoon, monsoon & post-monsoon seasons in 2018.
- Although Southwest monsoon was normal, the northeast monsoon season rainfall was substantially below normal (56% of Long Period Average (LPA)), the sixth lowest since 1901.
- LPA is the average rainfall received by the country as a whole during the south-west monsoon, for a 50-year period.
- The trends of recent years are part of the “global warming” trend, i.e. the rate of increase of temperatures over India is almost similar to the global average.