Geophysical Fluid Dynamics Laboratory Review June 30 - July 2, 2009 Geophysical Fluid Dynamics Laboratory Review June 30 - July 2, 2009.

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Geophysical Fluid Dynamics Laboratory Review June 30 - July 2, 2009 Geophysical Fluid Dynamics Laboratory Review June 30 - July 2, 2009.

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Presentation transcript:

Geophysical Fluid Dynamics Laboratory Review June 30 - July 2, 2009 Geophysical Fluid Dynamics Laboratory Review June 30 - July 2, 2009

Geophysical Fluid Dynamics Laboratory Review June 30 - July 2, 2009 Aerosol Modeling and Evaluation Presented by Paul Ginoux Presented by Paul Ginoux

3 Monthly mass distribution for SO 4 =, OC, BC, dust from MOZART (Horowitz et al., 2003), fixed sea-salt Anthropogenic emission (Horowitz 2006) Hygroscopicity for SO 4 = only External mixing CM2 forcing for AR4 with off-line aerosols AOD (550nm) CM2 > 2 x Obs. in polluted area CM2 < 0.5 x Obs. in biomass burning area Ginoux et al., 2006 Off-line Aerosols in CM2

4 Nudging capability with NCEP re-analysis for u, v, T, q, p s Emission, transport, and removal of SO 4 =, OC, BC, sea-salt and dust on-line Simplified S chemistry (O 3, OH, HO 2, NO 3, jH 2 O 2 prescribed) Anthropogenic emission from AeroCom Hygroscopicity of SO 4 =, OC, sea-salt Updated optical properties On-line aerosols in AM2n Comparison with ground-based network or satellite data: Surface concentration: NOAA PMEL, U. Miami data, IMPROVE, EMEP Column burden: AERONET, SCIAMACHY for SO 2 Size distribution: AERONET Extinction coefficient profile: MPLNET, CALIPSO Optical properties (AOD, Scattering, Absorption) –Ground-based: NOAA ESRL, AERONET –Satellite: MODIS, MISR, OMI, AVHRR, PARASOL (Ganguly et al., 2009a, and 2009b; Li et al., 2008, and 2009; Magi et al., 2009)

5 In addition to AM2n developments: Full O 3 chemistry (MOZART) Internal mixing of SO 4 = with BC Prognostic equation for cloud droplet number Anthropogenic emission from IPCC AR5 New transport schemes for convection and advection AOD (550nm): AM3 ~ Obs. in polluted and biomass burning area AM3 > 2 Obs. over volcanoes AM3 < 0.5 Obs. In high latitudes On-line aerosols in AM3

6 CM2 / AM3 Aerosol Extinction Profile Importance of realistic profiles for atmospheric heating by absorbing aerosol and long range transport of tracers. As observed, extinction coeff. decrease by 2-3 orders of magnitude in troposphere for AM3 (compare to 1 order for CM2) Improvement essentially due to new convective and advective schemes Greenbelt (MD) Extinction coefficient (1/km)

Geophysical Fluid Dynamics Laboratory Review June 30 - July 2, 2009 Geophysical Fluid Dynamics Laboratory Review June 30 - July 2, 2009