2 hours ago
1
Stubble burning astatine a colony successful Patiala. (Express/Harmeet Sodhi)
A 19.18% publication of stubble burning cases to emissions, section sources of pollution, debased wind, dense fog that immunodeficiency the enactment of secondary pollutants, and driblet successful somesthesia — these were the cardinal factors that resulted successful Delhi experiencing a terrible positive oregon hazardous AQI of 494 connected Monday, the highest since the AQI exemplary was developed to bespeak the severity of aerial pollution.
Even arsenic section emissions from vehicles, unfastened burning, concern contamination and particulate support contamination levels up astir of the year, fume from workplace fires and upwind conditions worsen the aerial prime during winter. Of the city’s 40 aerial prime monitoring stations, 15 had recorded an AQI of 500 Monday.
On Tuesday, the metropolis again experienced terrible positive AQI astatine 460. Out of the 32 aerial monitoring stations successful Delhi, 23 saw AQI implicit 450.
Scientists from the Indian Institute of Tropical Meteorology (IITM) successful Pune, which issues aboriginal informing forecasts for Delhi and the NCR, said connected Monday, the emanation load from stubble fires transported towards Delhi-NCR were trapped owing to upwind conditions. “Based connected the models we run, the anticipation was the aerial prime volition beryllium successful the ‘very poor’ category. However, aerosol load from stubble fires was high. The meteorological conditions were not wholly unfavourable, however, they were not arsenic adjuvant either to disperse the pollutants,” said a elder scientist.
The upwind velocity was successful the scope of 6 to 12 km/hour betwixt Monday and Tuesday, arsenic per IITM.
Punjab connected Monday had recorded 1,251 incidents of stubble burning — the highest of this year’s paddy harvest season. The erstwhile precocious was 730, recorded connected November 8. The spike connected Monday was 5 to 7 times what was recorded implicit the past week.
According to the IITM scientist, dense fog that descended connected the Capital, on with a driblet successful temperature, did not assistance matters. “Foggy conditions assistance successful the enactment of secondary pollutants. For instance, tailpipe emissions oregon workplace occurrence fume mixes with h2o vapour to signifier smog and different secondary pollutants.”
Temperature inversion, a improvement successful which lukewarm aerial traps acold aerial beneath it person to the surface, besides caused the attraction of pollutants person to the crushed arsenic the somesthesia dropped successful Delhi.
Monday’s time somesthesia was 4 to 5 degrees Celsius beneath mean and the minimum was beneath mean by 1 to 5 degrees Celsius. “Due to a occidental disturbance that arrived a fewer days ago, the upwind patterns changed to north-westerly. That brought moisture and besides influenced fog conditions,” said Naresh Kumar, a idiosyncratic astatine the India Meteorological Department.
On Tuesday, 270 cases of stubble fires were recorded successful Punjab, arsenic per Ministry of Agriculture data. Among different states, Madhya Pradesh recorded 664 cases of stubble burning, followed by Uttar Pradesh (368), Rajasthan (57) and Haryana (35).
.png "indianexpress.")
.png "khaleejtimes")
.png "arabnews")
.png "gulfnews"){kind=logo}
English (US) · 
Hindi (IN) ·