Jasjeev Gandhiok
Articles by Jasjeev Gandhiok

Study flags unaccounted sources adding to Delhi’s pollution load

Experts say unless these sources are recognised, they cannot be acted upon in the fight to bring down pollution.

A two-wheeler on a smoggy day in the Capital. (HT Archive)
A two-wheeler on a smoggy day in the Capital. (HT Archive)
Published on Feb 02, 2023 11:42 PM IST

This January in Delhi was coldest since 2013: Data

The average monthly maximum, recorded at 19.7°C, too was 0.4 degrees below the normal, the data showed

IMD said Delhi’s cold weather can be attributed to two strong western disturbance spells affecting the Himalayas. (PTI)
IMD said Delhi’s cold weather can be attributed to two strong western disturbance spells affecting the Himalayas. (PTI)
Updated on Feb 02, 2023 08:19 AM IST

Overnight showers help Delhi bridge Jan deficit

A western disturbance refers to an area of “disturbed” or reduced air pressure, moving from the west to the east, carrying with it moisture associated with rainfall, snowfall and fog in northern India

According to Met data, Safdarjung, which is considered representative of the Capital’s weather, recorded 20.4mm of rain between 8.30am on Sunday and 8.30am on Monday. (Raj K Raj/HT Photo)
According to Met data, Safdarjung, which is considered representative of the Capital’s weather, recorded 20.4mm of rain between 8.30am on Sunday and 8.30am on Monday. (Raj K Raj/HT Photo)
Updated on Jan 31, 2023 05:24 AM IST

Particles from smoke, garbage burning cause max air pollution in last 3 months

Delhi government data shows secondary inorganic aerosols account for 33% of the particulate matter 2.5 pollution in the Capital, and garbage burning had a share of 24%

Delhi chief minister Arvind Kejriwal launched the Real Time Source Apportionment Study's Supersite and Mobile Van at Rouse Avenue on Monday. (Sanchit Khanna/HT Photo)
Delhi chief minister Arvind Kejriwal launched the Real Time Source Apportionment Study's Supersite and Mobile Van at Rouse Avenue on Monday. (Sanchit Khanna/HT Photo)
Published on Jan 31, 2023 12:14 AM IST

Kejriwal unveils study, devices to help combat air pollution in Delhi

Delhi chief minister Arvind Kejriwal unveiled the source apportionment study, a supersite, a van and a portal to gather, analyse and share air pollution data in the capital

Delhi chief minister Arvind Kejriwal at the launch of a Supersite and van for the real time source apportionment study of air pollution in the city. (Twitter/ANI)
Delhi chief minister Arvind Kejriwal at the launch of a Supersite and van for the real time source apportionment study of air pollution in the city. (Twitter/ANI)
Updated on Jan 31, 2023 02:03 AM IST

Red-headed vulture seen at Delhi’s Bhatti mines, first since 2017

The bird was spotted during an ongoing winter raptor survey, which is carried out by the Bombay Natural History Society each year at the Asola Bhatti Wildlife Sanctuary

The red-headed vulture is “critically endangered”, with less than 10,000 of these birds existing worldwide. (Courtesy: Manan Singh Mahadev)
The red-headed vulture is “critically endangered”, with less than 10,000 of these birds existing worldwide. (Courtesy: Manan Singh Mahadev)
Updated on Jan 30, 2023 12:29 PM IST

Rarest of rare case: American black vulture spotted in Gurugram

Birders across the National Capital Region (NCR) sighted a black vulture (Coragyps atratus) in Gurugram’s Chandu Budhera – a sighting that is being described as the ‘rarest of rare’ because the bird is not found in Asia, or even Europe, making it the first such sighting for the region

The bird was spotted around 500 metres from the Chandu Budhera water treatment plant on Friday afternoon. (Representative Image/Getty Images)
The bird was spotted around 500 metres from the Chandu Budhera water treatment plant on Friday afternoon. (Representative Image/Getty Images)
Published on Jan 28, 2023 11:17 PM IST

Delhi govt plans to weed out invasive plants in Ridge

The project will commence at atentative cost of ₹1.09 crore. Once cleared, the weeds and cleared waste will be dumped in parts of the Asola Bhatti Wildlife Sanctuary

Vilayati kikar tree at the Northern Ridge in New Delhi, India. (HT Archive)
Vilayati kikar tree at the Northern Ridge in New Delhi, India. (HT Archive)
Published on Jan 27, 2023 02:01 AM IST

Delhi records its cleanest air day in over three months

The last time Delhi’s air was ‘moderate’ was on December 15, 2022--189--while the last time Delhi recorded a lower AQI reading was on October 14,-- 154 (moderate)-- according to CPCB data.

Shallow fog was reported in Delhi on Wednesday, with clouds forming a layer of mist, and visibility oscillating between 800 and 1,500 metres through the day. (Raj K Raj/HT photo)
Shallow fog was reported in Delhi on Wednesday, with clouds forming a layer of mist, and visibility oscillating between 800 and 1,500 metres through the day. (Raj K Raj/HT photo)
Updated on Jan 26, 2023 05:02 AM IST

Delhi forest dept set to procure 5,000 plants to beautify two key roads for G20

Delhi’s forest and wildlife department has begun the procurement of plants, trees and creepers to beautify two key stretches -- Sardar Patel Marg and Vande Mataram Marg -- ahead of the G20 summit, officials said on Tuesday.

Commuters on Sardar Patel Marg in New Delhi. (HT File)
Commuters on Sardar Patel Marg in New Delhi. (HT File)
Updated on Jan 25, 2023 02:31 AM IST

Delhi logs warmest January day in 4 years

The Capital is likely to see a dip in its maximum temperature again from Tuesday onwards, with India Meteorological Department (IMD) forecasting cloudy skies and light rain in the morning and evening.

Met officials say cold wave conditions are unlikely over Delhi till at least January 29 now, with easterly winds to be predominant during the next six days. (Raj K Raj/HT Photo)
Met officials say cold wave conditions are unlikely over Delhi till at least January 29 now, with easterly winds to be predominant during the next six days. (Raj K Raj/HT Photo)
Updated on Jan 24, 2023 04:23 AM IST

After Okhla, Narela waste-to-energy plant in Delhi seeks capacity boost

Waste to energy plants incinerate municipal solid waste to generate electricity. Experts say that such facilities cause pollution and describe them as short cuts in handling waste, circumvent procedures such as waste segregation.

The move comes over a month after the expansion at the plant in Okhla was approved by the expert appraisal committee (EAC) under the Union ministry of environment, forest and climate change (MoEFCC). (HT Archive)
The move comes over a month after the expansion at the plant in Okhla was approved by the expert appraisal committee (EAC) under the Union ministry of environment, forest and climate change (MoEFCC). (HT Archive)
Updated on Jan 24, 2023 12:51 AM IST

Delhi’s blue cover drops, urban growth to blame, says study

The study found that Delhi’s blue cover shrunk largely due to an increase in built-up area, which increased from 1,216 sq km in 2000 to 1,961 sq km in 2015.

The study also found that this increase in built-up area has also reduced Delhi’s groundwater recharge potential. (Sanjeev Verma/HT Photo)
The study also found that this increase in built-up area has also reduced Delhi’s groundwater recharge potential. (Sanjeev Verma/HT Photo)
Updated on Jan 23, 2023 07:07 AM IST
By, New Delhi

Metro subway to connect Aerocity station and Mahipalpur

This subway, the officials said, will pass under the busy Mahipalpur flyover on NH48, and will be 270m long.

People living in hotels in Mahipalpur are forced to cross the busy NH-48 to cover the 400m-odd distance to the Metro station. (HT Photo)
People living in hotels in Mahipalpur are forced to cross the busy NH-48 to cover the 400m-odd distance to the Metro station. (HT Photo)
Published on Jan 20, 2023 12:18 AM IST

Delhi sees 8th cold wave day this Jan, respite likely today

Officials said that the minimum tempreature will rise to 5 degrees by Friday and further up to 8 degrees by Saturday.

Clear weather on a cold day at Chanakyapuri in New Delhi on Wednesday. (Sanchit Khanna/HT Photo)
Clear weather on a cold day at Chanakyapuri in New Delhi on Wednesday. (Sanchit Khanna/HT Photo)
Updated on Jan 19, 2023 05:36 AM IST

Steps to make Nehru Place crossing safer for pedestrians

The Nehru Place Intersection, which is four-side signal intersection located on the Outer Ring Road, experiences a high number of vehicular as well as pedestrian traffic.

The ongoing tactical urbanism experiment at Nehru Place. Temporary features were added to make the intersection safer for pedestrians. (HT Photo)
The ongoing tactical urbanism experiment at Nehru Place. Temporary features were added to make the intersection safer for pedestrians. (HT Photo)
Published on Jan 18, 2023 12:10 AM IST
By, New Delhi

Yamuna pollution: ‘Just 9 of 35 sewage plants along river in sync with norms’

The analysis of data showed that the non-compliance of such a large percentage of STPs means only 145 million gallons per day (mgd) or 27.3% of the 530mgd sewage treated is non-polluting

The BOD in Yamuna is 2mg/l when it enters New Delhi, but rises to 56mg/l when it exits the Capital. (HT Archive)
The BOD in Yamuna is 2mg/l when it enters New Delhi, but rises to 56mg/l when it exits the Capital. (HT Archive)
Updated on Jan 17, 2023 02:14 AM IST
By, New Delhi

1.4°C: Cold wave hits Capital,brings coldest night in 2 years

Frosty winds brought in a cold wave to the national Capital with night temperatures plunging close to 1°C at several of the city’s 13 weather stations, but clear skies and bright sunlight during the day helped Delhi shake off the chills to some degree

HT Image
HT Image
Updated on Jan 17, 2023 12:04 AM IST
By, New Delhi

Chill sets in as Delhi braces for cold wave

On Sunday, the Capital’s Safdarjung station, the official weather station for the city, recorded a minimum of 4.7°C, but conditions were chillier at other locations, with Jafarpur recording 2.6°C, Lodhi Road 3.8°C and Ayanagar 3°C – technically entering cold wave territory.

IMD, which has predicted a low of 3°C at Safdarjung, issued a yellow alert for the Capital for three days between January 16 and 18.(PTI)
IMD, which has predicted a low of 3°C at Safdarjung, issued a yellow alert for the Capital for three days between January 16 and 18.(PTI)
Updated on Jan 16, 2023 04:38 AM IST
By, New Delhi

Forest dept asked for plan to weed out 3 invasive tree species in Delhi

Of the three, vilayati kikar is the most harmful, as the Mexican invasive species introduced by the British in the 1930s in Delhi quickly taking over large parts of the ridge, experts said.

Subabul is removed from a park in Defence Colony in New Delhi. Subabul, the third tree flagged in the list, also comes from Mexico and was introduced by the forest department for fuel and fodder, but it has grown too rapidly, expanding well beyond where it was initially planted. (HT Photo)
Subabul is removed from a park in Defence Colony in New Delhi. Subabul, the third tree flagged in the list, also comes from Mexico and was introduced by the forest department for fuel and fodder, but it has grown too rapidly, expanding well beyond where it was initially planted. (HT Photo)
Updated on Jan 16, 2023 03:29 AM IST

Delhi forest dept orders 400k plastic pots to plant flowers, experts quiz move

‘Different agencies in Delhi have been asked to carry out beautification and greening works as part of the G20 summit. We have also been asked to do the same and this procurement is part of the city-wide beautification,’ said a forest department official.

The government will decide which stretches in central Delhi require greening and beautification, and then place the pots there. Central Delhi includes the walled city of Shahjahanabad. (HT Photo)
The government will decide which stretches in central Delhi require greening and beautification, and then place the pots there. Central Delhi includes the walled city of Shahjahanabad. (HT Photo)
Updated on Jan 13, 2023 06:30 AM IST

One-fourth of Delhi’s sewage flows untreated into Yamuna: Report

To fix this problem, the report, which was compiled using data gathered from different agencies involved in cleaning up the Yamuna, shows by the end of December 2023, the upgradation of existing STPs and construction of new STPs is likely to see the sewage treatment capacity increase to 925.5 MGD.

he report further highlights that 13 out of 18 major drains in Delhi have been tapped so far, and authorities have set a target to tap four out of the five remaining major drains by the end of this year. (Sunil Ghosh/HT Photo)
he report further highlights that 13 out of 18 major drains in Delhi have been tapped so far, and authorities have set a target to tap four out of the five remaining major drains by the end of this year. (Sunil Ghosh/HT Photo)
Updated on Jan 12, 2023 07:11 AM IST

Drizzle on Thursday may snap 3-month dry spell: IMD

Delhi last received rain on October 12, 2022, when the Safdarjung observatory logged 0.4mm of rainfall.

Delhi recorded a minimum temperature of 5.9 degrees Celsius (°C) on Wednesday -- one degree below normal for this time of the year and only slightly below the 6.4°C logged on Tuesday. (Raj K Raj/HT Photo)
Delhi recorded a minimum temperature of 5.9 degrees Celsius (°C) on Wednesday -- one degree below normal for this time of the year and only slightly below the 6.4°C logged on Tuesday. (Raj K Raj/HT Photo)
Updated on Jan 12, 2023 08:07 AM IST

Delhi is India’s most polluted city: Study

On the list of most polluted cities, Faridabad ranks second with an annual PM2.5 concentration of 95.6µg/m3, followed by Ghaziabad (91.25µg/m3), as per the analysis. But while NCR cities rank poorly in the analysis, they have done much better than Delhi to reduce their PM2.5 levels.

At Kartavya Path in New Delhi on Tuesday. The top nine polluted cities are from across the Indo-Gangetic plains. (ANI)
At Kartavya Path in New Delhi on Tuesday. The top nine polluted cities are from across the Indo-Gangetic plains. (ANI)
Updated on Jan 11, 2023 06:16 AM IST

NGT forms panel to check Yamuna clean-up drive

The tribunal said the new committee will be responsible for overseeing directions made by the NGT in all previous orders concerning the Yamuna.

The NGT further noted that currently, there is a huge gap in the generation of sewage and available waste treatment facilities, with 194.5 million gallons per day (MGD) of sewage yet to be trapped, which included 147 drains that were yet to be tapped. (Amit Sharma)
The NGT further noted that currently, there is a huge gap in the generation of sewage and available waste treatment facilities, with 194.5 million gallons per day (MGD) of sewage yet to be trapped, which included 147 drains that were yet to be tapped. (Amit Sharma)
Updated on Jan 10, 2023 04:26 AM IST

Older vehicles banned in Delhi as AQI hits ‘severe’, worst since November 4

Monday’s AQI was a sharp deterioration from Sunday’s reading of 371 (very poor), and was the poorest air quality logged in Delhi since November 4, when the AQI was 447 (severe), CPCB data showed.

The CPCB classifies an AQI between 301 and 400 as ‘very poor’ and over 400 as ‘severe’. (Raj K Raj/HT Photo)
The CPCB classifies an AQI between 301 and 400 as ‘very poor’ and over 400 as ‘severe’. (Raj K Raj/HT Photo)
Updated on Jan 10, 2023 04:34 AM IST

20-hr fog spell delays 200+ flights, 73 trains in Delhi; haze likely today: IMD

Forecast for Tuesday shows dense fog is likely to continue, while Wednesday will see moderate to dense fog over the Capital. Met officials say the fog intensity will reduce after Wednesday, owing to a western disturbance impacting the region.

Passengers check arrival and departure time of flights at Indira Gandhi International Airport in New Delhi on Monday morning. (PTI)
Passengers check arrival and departure time of flights at Indira Gandhi International Airport in New Delhi on Monday morning. (PTI)
Updated on Jan 10, 2023 04:40 AM IST

At 5 days, decade’s longest January cold wave keeps Delhi shivering

Safdarjung, which is representational of Delhi’s weather, has been recording a cold wave since January 5, when the minimum was 3°C. On January 6, Delhi recorded a low of 4°C; 2.2°C on January 7 and 1.9°C on January 8, which was the coldest day since January 1, 2021, when the mercury dipped to 1.1°C.

A cold wave is declared in the region when the minimum temperature is 4.5 degrees or more below the normal mark, or when it drops to 4°C or lower. (Sanchit Khanna/HT Photo)
A cold wave is declared in the region when the minimum temperature is 4.5 degrees or more below the normal mark, or when it drops to 4°C or lower. (Sanchit Khanna/HT Photo)
Updated on Jan 10, 2023 05:11 AM IST

Flights, trains disrupted as fog envelopes Delhi amid biting cold

Delhi recorded its fifth consecutive cold wave day as the mercury plunged to 3.8°C at Safdarjung, the city’s representational weather station, and 3.2°C at Ayanagar

The fog reduced visibility to 25 metres at Safdarjung. (HT PHOTO)
The fog reduced visibility to 25 metres at Safdarjung. (HT PHOTO)
Updated on Jan 09, 2023 10:27 AM IST

Hazy shade of winter: Dense fog cloaks Delhi, delays flights

IMD forecasts show dense fog is likely on Monday as well, while moderate to dense fog is forecast for Tuesday. From Wednesday onwards, the fog intensity is likely to reduce.

A Met official said fog began forming over Palam around 8.30am and dissipated only by 1pm. (Vipin Kumar/HT photo)
A Met official said fog began forming over Palam around 8.30am and dissipated only by 1pm. (Vipin Kumar/HT photo)
Updated on Jan 09, 2023 07:25 AM IST
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