Delhi’s air ‘unbreathable’, AQI reaches ‘extreme’ mark as stubble-burning will increase in Punjab

Delhi’s air ‘unbreathable’, AQI reaches ‘extreme’ mark as stubble-burning will increase in Punjab



PTI

New Delhi, October 29

A layer of pungent haze lingered over Delhi on Saturday morning as town’s air high quality neared the “extreme” zone amid antagonistic meteorological situations — low temperatures and calm winds — and a rise in incidents of stubble burning in Punjab.

The general Air High quality Index (AQI) of Delhi stood at 396 at 10 am, worsening from 357 at 4 pm on Friday. It was 354 on Thursday, 271 on Wednesday, 302 on Tuesday and 312 on Monday (Diwali).

Anand Vihar (AQI 454) was probably the most polluted place within the capital. Wazirpur (439), Narela (423), Ashok Vihar (428), Vivek Vihar (427) and Jahangirpuri (438) have been among the many monitoring stations that recorded “extreme” air high quality.

The air high quality within the neighbouring cities of Ghaziabad (381), Noida (392), Better Noida (398), Gurugram (360) and Faridabad (391) additionally inched nearer to the “extreme” class.

An AQI between zero and 50 is taken into account “good”, 51 and 100 “passable”, 101 and 200 “average”, 201 and 300 “poor”, 301 and 400 “very poor”, and 401 and 500 “extreme”.

In keeping with the Central Air pollution Management Board (CPCB), the focus of lung-damaging superb particles generally known as PM2.5 was above 400 micrograms per cubic metre at 10 am, round seven instances the protected restrict of 60 micrograms per cubic metre, in lots of areas.

The India Meteorological Division (IMD) mentioned calm winds prevailed at evening.

Reasonable wind pace (as much as 8 kmph) is predicted in the course of the day, it added.

In chilly situations, pollution are trapped near the bottom due to low mixing top — the vertical top by which pollution are suspended within the air.

SAFAR, a forecasting company below the Union Ministry of Earth Sciences, predicted that the share of stubble burning in Delhi’s air pollution is more likely to enhance within the coming days.

The contribution of stubble burning to Delhi’s PM2.5 air pollution has thus far remained low (as much as 7 per cent) as a consequence of a protracted rain spell in early October and sluggish transport-level winds which weren’t sturdy sufficient to hold smoke from farm fires to the nationwide capital.

The Indian Agricultural Analysis Institute (IARI) reported 2,067 farm fires in Punjab on Friday, the very best thus far this season. It logged 124 and 34 instances of stubble burning in Haryana and Uttar Pradesh, respectively, on Friday.

Together with unfavourable meteorological situations, paddy straw burning in adjoining states is a serious motive behind the alarming spike in air air pollution ranges within the nationwide capital in October and November. Farmers set their fields on fireplace to rapidly clear off the crop residue earlier than cultivating wheat and greens.

As per the Indian Agricultural Analysis Institute, Punjab reported 71,304 farm fires between September 15 and November 30 final yr and 83,002 farm fires within the corresponding interval in 2020.

Final yr, the share of farm fires in Delhi’s PM 2.5 air pollution peaked to 48 per cent on November 7.


#Atmosphere
#farm fires
#Air pollution
#stubble burning





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