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Auroras

In Context A stunning aurora glow was recently observed above Iceland after a ‘dead’ sunspot erupted. Auroras on Earth An Aurora is a display of light in the sky predominantly seen in the high latitude regions (Arctic and Antarctic). It is also known as a Polar light. Caused when solar wind (charged particles ejected from […]

Western Disturbances

In News  Western disturbances bring rainfall to north and central parts of India. What is Western Disturbance (WD)? It is an extra-tropical storm that originates in the Mediterranean region. The disturbance travels from the “western” to the eastern direction and  gradually travels across the middle-east from Iran, Afghanistan and Pakistan to enter the Indian subcontinent. […]

El Nino Weather Conditions & Its Impacts

Context  The 2015 El Nino might have played a major role in worsening global hunger and driving food insecurity in the tropics according to a study published in Nature Communications. The researchers analysed ENSO association with child nutrition at a global scale by combining variation in ENSO intensity from 1986-2018 with children’s height and weight […]

Western Disturbances

In News  Recently, Uttar Pradesh recorded Heavy rain due to the low-pressure zone caused by western disturbance and lower cyclonic circulations. What is Western Disturbance (WD)? It is an extra-tropical storm that originates in the Mediterranean region. The disturbance travels from the “western” to the eastern direction.  Disturbance means an area of “disturbed” or reduced […]

Heatwave Occurrences Increasing in India

Context  A recent analysis by the Mahamana Centre of Excellence in Climate Change Research (MCECCR) at Banaras Hindu University (BHU), in collaboration with the Department of Science and Technology and the Ministry of Earth Sciences, has found a spatial shift of heatwaves in India, with this weather event now occurring in new regions in the […]

Delay in Monsoon Withdrawal

Context  The withdrawal of the Southwest monsoon is expected to be delayed with a fresh rain-bearing pressure system forming in the Bay of Bengal. There are no signs of monsoon withdrawal from North India for the next 10 days. Major Points  The September rainfall in India is 27% more than what’s normal for the month. […]

Drought Conditions in India

In News The Drought Early Warning System (DEWS) released data for  Drought-like conditions in India.  About  As per data over a fifth of India’s land area (21.06 per cent) is facing drought-like conditions. This is 62 per cent more than the area under drought during the same period last year, which was 7.86 per cent.  […]

Heat Dome

In News Huge tracts of North America are sweltering under very high temperatures, which are close to 50ºC in some places. The phenomenon behind this weather is known as a ‘heat dome’. Heat Dome It is a mountain of warm air built into a very wavy jet stream, with extreme undulations. As per the National […]

Glacial Lake Atlas of Ganga River Basin

In News Recently, Glacial Lake Atlas of Ganga Basin was released in a virtual event. About the Report The atlas is based on the inventoried glacial lakes in part of the Ganga River basin from its origin to the foothills of the Himalayas covering a catchment area of 2,47,109 sq. km. The study portion of […]

Meteorite: Hint For Earth’s Mantle

In News A new study has now shown that by studying a meteorite and its minerals we may find new clues about the Earth’s lower mantle.    About A meteorite, which belonged to the Asteroid Belt, fell in Assam in 2015, holds clues to Earth’s deeper layers and its formation. A team of students and […]