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: Overall AQI today indicates ‘Very Poor’ air quality. As minimum temperature is dropping gradually fog occurrence during early morning hours is likely to increase leading to deterioration of AQI. During afternoons AQI is mainly determined by local winds, maximum temperature/humidity and mixing layer height. Fine particles (size < 2.5 micrometer) contribute ~ 64% to PM10. Local surface winds being low (calm to 8 km/h) cause weak dispersion while drop in minimum temperature (Max Temperature 27-26 deg C; Min 7 - 8 deg C) helps accumulation of pollutants. Moderate ‘Mixing layer height’ during daytime (~ 1.0 – 1.5 km) enhances vertical mixing. AQI is likely to be within ‘Very Poor’ for the next 3 days due low wind speed and inversion/stable conditions reducing efficiency of dispersion and ventilation.         (2) Mumbai, Pune and Ahmedabad: AQI of Pune indicates ‘poor’ air quality today and likely to be within ‘poor’ for next two days. AQI of Mumbai indicates ‘poor’ and likely to be within ‘poor’ for next 2 days. AQI of Ahmedabad today indicates ‘moderate’ and likely to be within ‘moderate’ for next two days.      




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[SAFAR-METHODOLOGY: 4 Satellites-MODIS, VIIRS, INSAT-3D/3DR (STOTEN, 2020)]

MAP
TRENDING SUMMARY
(01-12-2022)
SHORT RANGE FORECAST:

(1) Delhi: Overall AQI today indicates ‘Very Poor’ air quality. As minimum temperature is dropping gradually fog occurrence during early morning hours is likely to increase leading to deterioration of AQI. During afternoons AQI is mainly determined by local winds, maximum temperature/humidity and mixing layer height.

Fine particles (size < 2.5 micrometer) contribute ~ 64% to PM10. Local surface winds being low (calm to 8 km/h) cause weak dispersion while drop in minimum temperature (Max Temperature 27-26 deg C; Min 7 - 8 deg C) helps accumulation of pollutants. Moderate ‘Mixing layer height’ during daytime (~ 1.0 – 1.5 km) enhances vertical mixing. AQI is likely to be within ‘Very Poor’ for the next 3 days due low wind speed and inversion/stable conditions reducing efficiency of dispersion and ventilation.

(2) Mumbai, Pune and Ahmedabad: AQI of Pune indicates ‘poor’ air quality today and likely to be within ‘poor’ for next two days. AQI of Mumbai indicates ‘poor’ and likely to be within ‘poor’ for next 2 days. AQI of Ahmedabad today indicates ‘moderate’ and likely to be within ‘moderate’ for next two days.

  FACTORS FORECASTED TO INFLUENCE DELHI AIR QUALITY: :

  RED Line: Most Influencing factor forecasted to deteriorate AQI

(1)  MIXING LAYER HEIGHT: MODERATE

  IMPACT: MODERATE VERTICAL MIXING

(2)   LOCAL WIND SPEED:LOW

  IMPACT:WEAK DISPERSION OF POLLUTANTS

(3)  VENTILATION FACTOR:MODERATE

  IMPACT:MODERATE VERTICAL DISPERSION

(4)  STUBBLE BURNING IMPACT: NEGLIGIBLE

(5)  EXTERNAL DUST INTRUSION: NEGLIGIBLE

  IMPACT: NEGLIGIBLE









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SAFAR AQ Forecast Reports -DIWALI 2022



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

 

Mumbai

 

Pune

 

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.


Sensitive Groups: 


Reduce prolonged or heavy exertion.


Take more breaks and do less intense activities.


Asthematics, keep medicine ready if symptoms of coughing or shortness of breath occur.


Heart patients, see dictor, if get palpitations, shortness of breath, or unusual fatigue.


HEALTHY PEOPLE:  


Be alert and watchful for unusual fatigue


Sensitive Groups: 


Reduce prolonged or heavy exertion.


Take more breaks and do less intense activities.


Asthematics, keep medicine ready if symptoms of coughing or shortness of breath occur.


Heart patients, see dictor, if get palpitations, shortness of breath, or unusual fatigue.


HEALTHY PEOPLE:  


Be alert and watchful for unusual fatigue


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) 278 Poor
306 Poor
334 Poor
PM2.5 (µgm-3) 178 Very Poor
196 Very Poor
213 Very Poor
Pollutants TodayAdvisoryTomorrow's ForecastAdvisoryAfter 3 daysAdvisory
PM10 (µgm-3) 171 Moderate
162 Moderate
156 Moderate
PM2.5 (µgm-3) 104 Poor
99 Poor
95 Poor
Pollutants TodayAdvisoryTomorrow's ForecastAdvisoryAfter 3 daysAdvisory
PM10 (µgm-3) 170 Moderate
166 Moderate
190 Moderate
PM2.5 (µgm-3) 97 Poor
93 Poor
107 Poor
Pollutants TodayAdvisoryTomorrow's ForecastAdvisoryAfter 3 daysAdvisory
PM10 (µgm-3) 140 Moderate
133 Moderate
136 Moderate
PM2.5 (µgm-3) 73 Moderate
69 Moderate
71 Moderate

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