Indirect IR Effects of Aerosol on the Arctic Climate during the Cold Season

Where are we with Arctic monitoring and modelling of arctic aerosols & clouds?

Indirect IR Effects of Aerosol on the Arctic Climate during the Cold SeasonJean-Pierre Blanchet

NETCARE Workshop 2013 (Year 1) Tuesday, November 18University of TorontoBackgroundEarly DGF hypothesis (Blanchet & Girard, Nature, 1994)

(Bigg, 1980)

O3CO2H2OH2OTrace GasesGreenhouse Atmospheric Radiation at the groundWater Vapour is the Strongest Greenhouse GasTHz range75% of the coolingPWV~1mm PWV~0.1mm 333

Far IRMid IRWindowsNear IRProcess #1 Adiabatic CoolingDynamicsTime Scale : ~ 6 24 hours

DT -10 to -20C555

Process #2 Direct IR CoolingEmission from Ice CloudsTIC-2BTIC-1Time Scale : ~ 1 5 days

TIC-2BDT -3 to -8C

TIC-1DT 0 to +2C666Process #3 Indirect IR CoolingEmission due to Lost Water Vapour

Time Scale : ~ 1 2 weeksDT -5 to -10CPCP-Water ~ 1 mm Model Bias + 0.3 mmDRY Anomaly777Background

Early DGF hypothesis (Blanchet & Girard, Nature, 1994)NARCM explicit aerosol in CRCM (Barry, Blanchet et al, 1996-2000)Explicit aerosol-cloud phy model (Girard & Blanchet, 2001)IPY exploration & data analysis (Blanchet et al., 2007-09)BackgroundEarly DGF hypothesis (Blanchet & Girard, Nature, 1994)NARCM explicit aerosol in CRCM (Barry, Blanchet et al, 1996-2000)Explicit aerosol-cloud phy model (Girard & Blanchet, 2001)IPY exploration & data analysis (Blanchet et al., 2007-09)CloudSat-CALIPSO Polar coverage (Grenier & Blanchet, 2009)

Radar Lidar Comparison4000 km6 10 km101010BackgroundEarly DGF hypothesis (Blanchet & Girard, Nature, 1994)NARCM explicit aerosol in CRCM (Barry, Blanchet et al, 1996-2000)Explicit aerosol-cloud phy model (Girard & Blanchet, 2001)IPY exploration & data analysis (Blanchet et al., 2007-09)CloudSat-CALIPSO Polar coverage (Grenier & Blanchet, 2009)PEARL (Eureka) TIC and IR climatology (Ayash, Blanchet, 2009-13)

TIC-2B from PEARL and CALIPSO Simultaneously7 January 2007, 14h (Ref.: Ed Eloranta, OPAL at Eureka NU)TIC-2BTIC-2bRef.: [email protected]

TIC-2B121212BackgroundEarly DGF hypothesis (Blanchet & Girard, Nature, 1994)NARCM explicit aerosol in CRCM (Barry, Blanchet et al, 1996-2000)Explicit aerosol-cloud phy model (Girard & Blanchet, 2001)IPY exploration & data analysis (Blanchet et al., 2007-09)CloudSat-CALIPSO Polar coverage (Grenier & Blanchet, 2009)PEARL (Eureka) TIC and IR climatology (Ayash, Blanchet, 2009-13)Laboratory controlled experiments (Bertram, Eastwood et al., 2008-09)

Flow cell coupled to microscopeBackgroundEarly DGF hypothesis (Blanchet & Girard, Nature, 1994)NARCM explicit aerosol in CRCM (Barry, Blanchet et al, 1996-2000)Explicit aerosol-cloud phy model (Girard & Blanchet, 2001)IPY exploration & data analysis (Blanchet et al., 2007-09)CloudSat-CALIPSO Polar coverage (Grenier & Blanchet, 2009)PEARL (Eureka) TIC and IR climatology (Ayash, Blanchet, 2009-13)Laboratory controlled experiments (Bertram, Eastwood et al., 2008-09)Aerosol-TIC Regional climate models (Girard et al., 2004-2013)ISDAC April, 2008 (Jouan, Girard, Pellon, Blanchet et al., 2011)

April 14, 2008ISDAC Flight 20-21

15VeniaminofVolcanoesCleaveland

Natural (volcanoes & DMS)+Anthropogenic sulfate1515BackgroundEarly DGF hypothesis (Blanchet & Girard, Nature, 1994)NARCM explicit aerosol in CRCM (Barry, Blanchet et al, 1996-2000)Explicit aerosol-cloud phy model (Girard & Blanchet, 2001)IPY exploration & data analysis (Blanchet et al., 2007-09)CloudSat-CALIPSO Polar coverage (Grenier & Blanchet, 2009)PEARL (Eureka) TIC and IR climatology (Ayash, Blanchet, 2009-13)Laboratory controlled experiments (Bertram, Eastwood et al., 2008-09)Aerosol-TIC Regional climate models (Girard et al., 2004-2013)ISDAC April, 2008 (Jouan, Girard, Pellon, Blanchet et al., 2011)Aerosol-cloud dynamic coupling in Polar Night (on going)

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Jan 1, 2007, 15ZFLIP WITH PREVIOUS PAGEqObserved and Simulated Aerosols~ 5000 km scale17

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LTIC-2BTIC-2BTIC-2BGreenlandClean backgroundBeaufort SeaCentral ArcticPolluted regionObserved and Simulated AerosolsJan 1, 2007, 15Z

18BackgroundEarly DGF hypothesis (Blanchet & Girard, Nature, 1994)NARCM explicit aerosol in CRCM (Barry, Blanchet et al, 1996-2000)Explicit aerosol-cloud phy model (Girard & Blanchet, 2001)IPY exploration & data analysis (Blanchet et al., 2007-09)CloudSat-CALIPSO Polar coverage (Grenier & Blanchet, 2009)PEARL (Eureka) TIC and IR climatology (Ayash, Blanchet, 2009-13)Laboratory controlled experiments (Bertram, Eastwood et al., 2008-09)Aerosol-TIC Regional climate models (Girard et al., 2004-2013)ISDAC April, 2008 (Jouan, Girard, Pellon, Blanchet et al., 2011)Aerosol-cloud dynamic coupling in Polar Night (on going)NETCARE In situ aerosol-ice clouds interactions (Bertram et al, 2015)FIRR radiometer for water and cloud phy prototype (NETCARE 2015)TICFIRE dedicate microsat to far IR processes (Blanchet et al., )TICFIRE