Impact of air masses origin and trajectory on atmospheric ... · air masses coming from west (Po...
Transcript of Impact of air masses origin and trajectory on atmospheric ... · air masses coming from west (Po...
![Page 1: Impact of air masses origin and trajectory on atmospheric ... · air masses coming from west (Po Valley) and in the previous days air masses have to remain stick to the ground and](https://reader034.fdocument.pub/reader034/viewer/2022050310/5f72ae70cb67e62df93094dd/html5/thumbnails/1.jpg)
Arpa FVG- Agenzia Regionale per la Protezione dell'Ambiente del Friuli Venezia Giulia
CRMA – Centro Regionale per la Modellistica Ambientale
София 09 Септември 2015
Impact of air masses
origin and trajectory
on atmospheric phenomena
Arianna Miniussi, Dario B. Giaiotti
feat Fulvio Stel
Politechnic of Turin (Italy)
Regional Agency for Environmental Protection of Friuli Venezia Giulia (Italy)
EMS meeting 2015
![Page 2: Impact of air masses origin and trajectory on atmospheric ... · air masses coming from west (Po Valley) and in the previous days air masses have to remain stick to the ground and](https://reader034.fdocument.pub/reader034/viewer/2022050310/5f72ae70cb67e62df93094dd/html5/thumbnails/2.jpg)
Arpa FVG- Agenzia Regionale per la Protezione dell'Ambiente del Friuli Venezia Giulia
CRMA – Centro Regionale per la Modellistica Ambientale
Conclusions
София 09 Септември 2015
• High (relatively) SO2 concentrations in Friuli Venezia Giulia are
associated to air masses coming from eastern Europe
• High PM10 concentrations in Friuli Venezia Giulia are associated to
air masses coming from west (Po Valley) and in the previous days air
masses have to remain stick to the ground and be subject to
subsidence
• High O3 concentrations do not have a privileged direction of air
masses, but air masses have to remain relatively stick to the
ground for a long time
• Heavy rain episodes are characterized by the “Adriatic” alley
direction in the previous days
EMS meeting 2015
![Page 3: Impact of air masses origin and trajectory on atmospheric ... · air masses coming from west (Po Valley) and in the previous days air masses have to remain stick to the ground and](https://reader034.fdocument.pub/reader034/viewer/2022050310/5f72ae70cb67e62df93094dd/html5/thumbnails/3.jpg)
Arpa FVG- Agenzia Regionale per la Protezione dell'Ambiente del Friuli Venezia Giulia
CRMA – Centro Regionale per la Modellistica Ambientale
The study area (where Friuli Venezia Giulia is)
София 09 Септември 2015
EMS meeting 2015
![Page 4: Impact of air masses origin and trajectory on atmospheric ... · air masses coming from west (Po Valley) and in the previous days air masses have to remain stick to the ground and](https://reader034.fdocument.pub/reader034/viewer/2022050310/5f72ae70cb67e62df93094dd/html5/thumbnails/4.jpg)
Arpa FVG- Agenzia Regionale per la Protezione dell'Ambiente del Friuli Venezia Giulia
CRMA – Centro Regionale per la Modellistica Ambientale
The study area
София 09 Септември 2015
EMS meeting 2015
Heavy rain events Pollution episodes (SO2, PM10, O3)
![Page 5: Impact of air masses origin and trajectory on atmospheric ... · air masses coming from west (Po Valley) and in the previous days air masses have to remain stick to the ground and](https://reader034.fdocument.pub/reader034/viewer/2022050310/5f72ae70cb67e62df93094dd/html5/thumbnails/5.jpg)
• Significant episodes chosen on a daily basis
• Episodes spanning from 2005 up to 2014
• Air masses trajectories determined through the HYSPLIT model
(http://www.arl.noaa.gov/HYSPLIT_info.php)
• Meteorological data used obtained from GDAS archive
(https://ready.arl.noaa.gov/gdas1.php)
• Tree 120 hours backward trajectories (SFC, 500 and 1000 m ASL)
centered at 12:00 UTC in the day of the event
Arpa FVG- Agenzia Regionale per la Protezione dell'Ambiente del Friuli Venezia Giulia
CRMA – Centro Regionale per la Modellistica Ambientale
Materials and methods
София 09 Септември 2015
EMS meeting 2015
![Page 6: Impact of air masses origin and trajectory on atmospheric ... · air masses coming from west (Po Valley) and in the previous days air masses have to remain stick to the ground and](https://reader034.fdocument.pub/reader034/viewer/2022050310/5f72ae70cb67e62df93094dd/html5/thumbnails/6.jpg)
Arpa FVG- Agenzia Regionale per la Protezione dell'Ambiente del Friuli Venezia Giulia
CRMA – Centro Regionale per la Modellistica Ambientale
SO2
София 09 Септември 2015
EMS meeting 2015
Backward trajectories that were at SURFACE level at the day of the event
![Page 7: Impact of air masses origin and trajectory on atmospheric ... · air masses coming from west (Po Valley) and in the previous days air masses have to remain stick to the ground and](https://reader034.fdocument.pub/reader034/viewer/2022050310/5f72ae70cb67e62df93094dd/html5/thumbnails/7.jpg)
Arpa FVG- Agenzia Regionale per la Protezione dell'Ambiente del Friuli Venezia Giulia
CRMA – Centro Regionale per la Modellistica Ambientale
SO2
София 09 Септември 2015
EMS meeting 2015
Backward trajectories that were at 500 m above mean level at the day of the event
![Page 8: Impact of air masses origin and trajectory on atmospheric ... · air masses coming from west (Po Valley) and in the previous days air masses have to remain stick to the ground and](https://reader034.fdocument.pub/reader034/viewer/2022050310/5f72ae70cb67e62df93094dd/html5/thumbnails/8.jpg)
Arpa FVG- Agenzia Regionale per la Protezione dell'Ambiente del Friuli Venezia Giulia
CRMA – Centro Regionale per la Modellistica Ambientale
SO2
София 09 Септември 2015
EMS meeting 2015
Backward trajectories that were at 1000 m above surface level at the day of the event
![Page 9: Impact of air masses origin and trajectory on atmospheric ... · air masses coming from west (Po Valley) and in the previous days air masses have to remain stick to the ground and](https://reader034.fdocument.pub/reader034/viewer/2022050310/5f72ae70cb67e62df93094dd/html5/thumbnails/9.jpg)
Arpa FVG- Agenzia Regionale per la Protezione dell'Ambiente del Friuli Venezia Giulia
CRMA – Centro Regionale per la Modellistica Ambientale
SO2
София 09 Септември 2015
EMS meeting 2015
Largest dots indicate the position of air mass one day before the event Smallest dots indicate the position of air mass five days before the event
![Page 10: Impact of air masses origin and trajectory on atmospheric ... · air masses coming from west (Po Valley) and in the previous days air masses have to remain stick to the ground and](https://reader034.fdocument.pub/reader034/viewer/2022050310/5f72ae70cb67e62df93094dd/html5/thumbnails/10.jpg)
Arpa FVG- Agenzia Regionale per la Protezione dell'Ambiente del Friuli Venezia Giulia
CRMA – Centro Regionale per la Modellistica Ambientale
SO2
София 09 Септември 2015
EMS meeting 2015
Left panel – Air masses average vertical height (0 is the day of the event)
Left panel - Surface air mass average vertical height and standard deviation
![Page 11: Impact of air masses origin and trajectory on atmospheric ... · air masses coming from west (Po Valley) and in the previous days air masses have to remain stick to the ground and](https://reader034.fdocument.pub/reader034/viewer/2022050310/5f72ae70cb67e62df93094dd/html5/thumbnails/11.jpg)
Arpa FVG- Agenzia Regionale per la Protezione dell'Ambiente del Friuli Venezia Giulia
CRMA – Centro Regionale per la Modellistica Ambientale
PM10
София 09 Септември 2015
EMS meeting 2015
Backward trajectories that were at SURFACE level at the day of the event
![Page 12: Impact of air masses origin and trajectory on atmospheric ... · air masses coming from west (Po Valley) and in the previous days air masses have to remain stick to the ground and](https://reader034.fdocument.pub/reader034/viewer/2022050310/5f72ae70cb67e62df93094dd/html5/thumbnails/12.jpg)
Arpa FVG- Agenzia Regionale per la Protezione dell'Ambiente del Friuli Venezia Giulia
CRMA – Centro Regionale per la Modellistica Ambientale
PM10
София 09 Септември 2015
EMS meeting 2015
Backward trajectories that were at 1000 m above surface level at the day of the event
![Page 13: Impact of air masses origin and trajectory on atmospheric ... · air masses coming from west (Po Valley) and in the previous days air masses have to remain stick to the ground and](https://reader034.fdocument.pub/reader034/viewer/2022050310/5f72ae70cb67e62df93094dd/html5/thumbnails/13.jpg)
Arpa FVG- Agenzia Regionale per la Protezione dell'Ambiente del Friuli Venezia Giulia
CRMA – Centro Regionale per la Modellistica Ambientale
PM10
София 09 Септември 2015
EMS meeting 2015
Backward trajectories that were at 1000 m above surface level at the day of the event
![Page 14: Impact of air masses origin and trajectory on atmospheric ... · air masses coming from west (Po Valley) and in the previous days air masses have to remain stick to the ground and](https://reader034.fdocument.pub/reader034/viewer/2022050310/5f72ae70cb67e62df93094dd/html5/thumbnails/14.jpg)
Arpa FVG- Agenzia Regionale per la Protezione dell'Ambiente del Friuli Venezia Giulia
CRMA – Centro Regionale per la Modellistica Ambientale
PM10
София 09 Септември 2015
EMS meeting 2015
Largest dots indicate the position of air mass one day before the event Smallest dots indicate the position of air mass five days before the event
![Page 15: Impact of air masses origin and trajectory on atmospheric ... · air masses coming from west (Po Valley) and in the previous days air masses have to remain stick to the ground and](https://reader034.fdocument.pub/reader034/viewer/2022050310/5f72ae70cb67e62df93094dd/html5/thumbnails/15.jpg)
Arpa FVG- Agenzia Regionale per la Protezione dell'Ambiente del Friuli Venezia Giulia
CRMA – Centro Regionale per la Modellistica Ambientale
PM10
София 09 Септември 2015
EMS meeting 2015
Left panel – Air masses average vertical height (0 is the day of the event)
Left panel - Surface air mass average vertical height and standard deviation
![Page 16: Impact of air masses origin and trajectory on atmospheric ... · air masses coming from west (Po Valley) and in the previous days air masses have to remain stick to the ground and](https://reader034.fdocument.pub/reader034/viewer/2022050310/5f72ae70cb67e62df93094dd/html5/thumbnails/16.jpg)
Arpa FVG- Agenzia Regionale per la Protezione dell'Ambiente del Friuli Venezia Giulia
CRMA – Centro Regionale per la Modellistica Ambientale
O3
София 09 Септември 2015
EMS meeting 2015
Backward trajectories that were at SURFACE level at the day of the event
![Page 17: Impact of air masses origin and trajectory on atmospheric ... · air masses coming from west (Po Valley) and in the previous days air masses have to remain stick to the ground and](https://reader034.fdocument.pub/reader034/viewer/2022050310/5f72ae70cb67e62df93094dd/html5/thumbnails/17.jpg)
Arpa FVG- Agenzia Regionale per la Protezione dell'Ambiente del Friuli Venezia Giulia
CRMA – Centro Regionale per la Modellistica Ambientale
O3
София 09 Септември 2015
EMS meeting 2015
Backward trajectories that were at 500 m above mean level at the day of the event
![Page 18: Impact of air masses origin and trajectory on atmospheric ... · air masses coming from west (Po Valley) and in the previous days air masses have to remain stick to the ground and](https://reader034.fdocument.pub/reader034/viewer/2022050310/5f72ae70cb67e62df93094dd/html5/thumbnails/18.jpg)
Arpa FVG- Agenzia Regionale per la Protezione dell'Ambiente del Friuli Venezia Giulia
CRMA – Centro Regionale per la Modellistica Ambientale
O3
София 09 Септември 2015
EMS meeting 2015
Backward trajectories that were at 1000 m above surface level at the day of the event
![Page 19: Impact of air masses origin and trajectory on atmospheric ... · air masses coming from west (Po Valley) and in the previous days air masses have to remain stick to the ground and](https://reader034.fdocument.pub/reader034/viewer/2022050310/5f72ae70cb67e62df93094dd/html5/thumbnails/19.jpg)
Arpa FVG- Agenzia Regionale per la Protezione dell'Ambiente del Friuli Venezia Giulia
CRMA – Centro Regionale per la Modellistica Ambientale
O3
София 09 Септември 2015
EMS meeting 2015
Largest dots indicate the position of air mass one day before the event Smallest dots indicate the position of air mass five days before the event
![Page 20: Impact of air masses origin and trajectory on atmospheric ... · air masses coming from west (Po Valley) and in the previous days air masses have to remain stick to the ground and](https://reader034.fdocument.pub/reader034/viewer/2022050310/5f72ae70cb67e62df93094dd/html5/thumbnails/20.jpg)
Arpa FVG- Agenzia Regionale per la Protezione dell'Ambiente del Friuli Venezia Giulia
CRMA – Centro Regionale per la Modellistica Ambientale
O3
София 09 Септември 2015
EMS meeting 2015
Left panel – Air masses average vertical height (0 is the day of the event)
Left panel - Surface air mass average vertical height and standard deviation
![Page 21: Impact of air masses origin and trajectory on atmospheric ... · air masses coming from west (Po Valley) and in the previous days air masses have to remain stick to the ground and](https://reader034.fdocument.pub/reader034/viewer/2022050310/5f72ae70cb67e62df93094dd/html5/thumbnails/21.jpg)
Arpa FVG- Agenzia Regionale per la Protezione dell'Ambiente del Friuli Venezia Giulia
CRMA – Centro Regionale per la Modellistica Ambientale
Heavy rain
София 09 Септември 2015
EMS meeting 2015
Backward trajectories that were at SURFACE level at the day of the event
![Page 22: Impact of air masses origin and trajectory on atmospheric ... · air masses coming from west (Po Valley) and in the previous days air masses have to remain stick to the ground and](https://reader034.fdocument.pub/reader034/viewer/2022050310/5f72ae70cb67e62df93094dd/html5/thumbnails/22.jpg)
Arpa FVG- Agenzia Regionale per la Protezione dell'Ambiente del Friuli Venezia Giulia
CRMA – Centro Regionale per la Modellistica Ambientale
Heavy rain
София 09 Септември 2015
EMS meeting 2015
Backward trajectories that were at 500 m above mean level at the day of the event
![Page 23: Impact of air masses origin and trajectory on atmospheric ... · air masses coming from west (Po Valley) and in the previous days air masses have to remain stick to the ground and](https://reader034.fdocument.pub/reader034/viewer/2022050310/5f72ae70cb67e62df93094dd/html5/thumbnails/23.jpg)
Arpa FVG- Agenzia Regionale per la Protezione dell'Ambiente del Friuli Venezia Giulia
CRMA – Centro Regionale per la Modellistica Ambientale
Heavy rain
София 09 Септември 2015
EMS meeting 2015
Backward trajectories that were at 1000 m above surface level at the day of the event
![Page 24: Impact of air masses origin and trajectory on atmospheric ... · air masses coming from west (Po Valley) and in the previous days air masses have to remain stick to the ground and](https://reader034.fdocument.pub/reader034/viewer/2022050310/5f72ae70cb67e62df93094dd/html5/thumbnails/24.jpg)
Arpa FVG- Agenzia Regionale per la Protezione dell'Ambiente del Friuli Venezia Giulia
CRMA – Centro Regionale per la Modellistica Ambientale
Heavy rain
София 09 Септември 2015
EMS meeting 2015
Largest dots indicate the position of air mass one day before the event Smallest dots indicate the position of air mass five days before the event
![Page 25: Impact of air masses origin and trajectory on atmospheric ... · air masses coming from west (Po Valley) and in the previous days air masses have to remain stick to the ground and](https://reader034.fdocument.pub/reader034/viewer/2022050310/5f72ae70cb67e62df93094dd/html5/thumbnails/25.jpg)
Arpa FVG- Agenzia Regionale per la Protezione dell'Ambiente del Friuli Venezia Giulia
CRMA – Centro Regionale per la Modellistica Ambientale
Heavy rain
София 09 Септември 2015
EMS meeting 2015
Left panel – Air masses average vertical height (0 is the day of the event)
Left panel - Surface air mass average vertical height and standard deviation
![Page 26: Impact of air masses origin and trajectory on atmospheric ... · air masses coming from west (Po Valley) and in the previous days air masses have to remain stick to the ground and](https://reader034.fdocument.pub/reader034/viewer/2022050310/5f72ae70cb67e62df93094dd/html5/thumbnails/26.jpg)
Arpa FVG- Agenzia Regionale per la Protezione dell'Ambiente del Friuli Venezia Giulia
CRMA – Centro Regionale per la Modellistica Ambientale
In general
София 09 Септември 2015
EMS meeting 2015
• High (relatively) SO2 concentrations are associated to air masses
coming from eastern Europe
• High PM10 concentrations are associated to air masses coming from
west (Po Valley) and in the previous days air masses have to remain
stick to the ground and be subject to subsidence
• High O3 concentrations do not have a privileged direction of air
masses, but air masses have to remain relatively stick to the
ground for a long time
• Heavy rain episodes are characterized by the “Adriatic” alley
direction in the previous days
![Page 27: Impact of air masses origin and trajectory on atmospheric ... · air masses coming from west (Po Valley) and in the previous days air masses have to remain stick to the ground and](https://reader034.fdocument.pub/reader034/viewer/2022050310/5f72ae70cb67e62df93094dd/html5/thumbnails/27.jpg)
Arpa FVG- Agenzia Regionale per la Protezione dell'Ambiente del Friuli Venezia Giulia
CRMA – Centro Regionale per la Modellistica Ambientale
София 09 Септември 2015
Thanks for your attention
Благодаря