IITM

IITM

IMD SAFAR GAW

SAFAR-India

System of Air Quality and Weather Forecasting And Research
Ministry of Earth Science, Govt. of India.
Indian Institute of Tropical Meteorology, Pune

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A Research based initiative of integrating Air Quality with Health Advisories and Food Security.
A dedicated Air Quality Information Service for Indian Metropolitan Cites to make India self sufficient
in providing frontier research based Scientific accrediated robust Air Quality Forecasting system.


National Certification - ISO 9001:2008 Accredited
International Recognition - World Meteorological Organization (GURME - Pilot)



SHORT RANGE FORECAST:     (1) Delhi: The overall air quality is in the high end of the Very Poor category as of today morning as forecasted. Surface-level winds are Southwesterly and moderate. Boundary layer wind direction is North northwesterly and partly favorable for Stubble fire-related transport. Stubble fire counts with sufficient potential as estimated from SAFAR-multi-satellite products significant and around 316. Hence, the Stubble burning share in PM2.5 in Delhi's air is estimated as ~3 % for today. Air quality is likely to marginally improve with in the Very Poor for tomorrow owing slightly better ventilation condition. By 4th December ventilation conditions are likely to slow down again and deterioration in AQI is expected. Higher-end of Very poor category is forecasted for 5th December.         (2) Mumbai, Pune, and Ahmedabad: The air quality of Pune, Ahmedabad, and Mumbai are in the Moderate category as on today.       FORECAST: Pune: AQI will remain in moderate category; Mumbai: Lowering of temperature and influx of inland polluted air will lead to poor AQI for next two days; Ahmedabad: cold and polluted air north India will lead to moderate to poor AQI.      




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MULTI-SATELLITE SAFAR-SYNERGIZED FIRE COUNTS (NORTH INDIA)

PLOT

SHARE OF STUBBLE BURNING IN TOTAL PM2.5 OF DELHI NCT (%)

MAP

Methodology Reference: "Objective evaluation of stubble emission of North India and quantifying its impact on air quality of Delhi", Science of Total Environment doi.org/10.1016/j.scitotenv.2019.136 (Beig et al., 2020)

FACTORS AFFECTING DELHI AIR QUALITY: STATUS OF WINDS, DUST, FIRE & FOG MAP
TRENDING SUMMARY
(02-12-2020)
SHORT RANGE FORECAST:

(1) Delhi: The overall air quality is in the high end of the Very Poor category as of today morning as forecasted. Surface-level winds are Southwesterly and moderate. Boundary layer wind direction is North northwesterly and partly favorable for Stubble fire-related transport. Stubble fire counts with sufficient potential as estimated from SAFAR-multi-satellite products significant and around 316. Hence, the Stubble burning share in PM2.5 in Delhi's air is estimated as ~3 % for today. Air quality is likely to marginally improve with in the Very Poor for tomorrow owing slightly better ventilation condition. By 4th December ventilation conditions are likely to slow down again and deterioration in AQI is expected. Higher-end of Very poor category is forecasted for 5th December.

(2) Mumbai, Pune, and Ahmedabad: The air quality of Pune, Ahmedabad, and Mumbai are in the Moderate category as on today.

FORECAST: Pune: AQI will remain in moderate category; Mumbai: Lowering of temperature and influx of inland polluted air will lead to poor AQI for next two days; Ahmedabad: cold and polluted air north India will lead to moderate to poor AQI.

  FACTORS AFFECTING DELHI AIR QUALITY :

  RED Line: Most Influencing factor forecasted to deteriorate AQI

(1)  STUBBLE TRANSPORT DIRECTION & SPEED: Unfavorable for AQ

  STUBBLE BURNING IMPACT: MODERATE SHARE (3%)

(2)   MIXING LAYER HEIGHT:Low at night.

(3)  LOCAL WIND SPEED: MODERARE

  IMPACT :: MODERATE DISPERSION

(4)  EXTERNAL DUST IMPACT: Nil









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Diwali 2020 AQ Forecast Reports



DELHI

PUNE

MUMBAI

AHMEDABAD

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Air Quality Across SAFAR Cities: AQ-Index

1

50

100

200

300

400

500+

GOOD

SEVERE

 

Ahmedabad

 

Pune

 

Mumbai

 

Delhi



Delhi

Pune

Mumbai

Ahmedabad


Sensitive Groups:  


Avoid all Physical activity outdoor and move activities indoors. If asthematics, keep relief medicine handy.


EVERYONE:  


Stop outdoor activity at early morning and after sunset times.


Avoid prolonged or heavy exertion.


Go for a short walk instead of a jog and take more breaks.


Stop any activity level if you experience any unusual coughing, chest discomfort, wheezing, breathing difficulty, or fatigue.


If the room has windows, close them.


If the air conditioner provides a fresh air intake option, keep that closed.

Avoid burning of wood, candles or incense.


Keep the room clean – dont vacuum. Do wet mopping to reduce dust.


Masks known as N-95 or P-100 respirators may only help if you go out.


Unusually Sensitive: 


Consider reducing prolonged or heavy exertion.


Take it easy if symptoms such as coughing or shortness of breath occurs.


HEALTHY PEOPLE: 


Its a reasonable to be active outside


Unusually Sensitive: 


Consider reducing prolonged or heavy exertion.


Take it easy if symptoms such as coughing or shortness of breath occurs.


HEALTHY PEOPLE: 


Its a reasonable to be active outside


Unusually Sensitive: 


Consider reducing prolonged or heavy exertion.


Take it easy if symptoms such as coughing or shortness of breath occurs.


HEALTHY PEOPLE: 


Its a reasonable to be active outside

Air Quality Forecast (1-3 days): Levels in µgm-3

Pollutants TodayAdvisoryTomorrow's ForecastAdvisoryAfter 3 daysAdvisory
PM10 (µgm-3) 334 Poor
284 Poor
408 Very Poor
PM2.5 (µgm-3) 196 Very Poor
167 Very Poor
239 Very Poor
Pollutants TodayAdvisoryTomorrow's ForecastAdvisoryAfter 3 daysAdvisory
PM10 (µgm-3) 115 Moderate
128 Moderate
142 Moderate
PM2.5 (µgm-3) 70 Moderate
79 Moderate
87 Moderate
Pollutants TodayAdvisoryTomorrow's ForecastAdvisoryAfter 3 daysAdvisory
PM10 (µgm-3) 139 Moderate
136 Moderate
156 Moderate
PM2.5 (µgm-3) 77 Moderate
75 Moderate
87 Moderate
Pollutants TodayAdvisoryTomorrow's ForecastAdvisoryAfter 3 daysAdvisory
PM10 (µgm-3) 116 Moderate
111 Moderate
113 Moderate
PM2.5 (µgm-3) 58 Satisfactory
54 Satisfactory
56 Satisfactory

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