Photo courtesy Carly Calvin, NCAR NSF C-130 Platform Report Robert Wood (a) 20 o S Cross-Sections [4 full missions+5 partial missions] - to characterize.

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Presentation transcript:

Photo courtesy Carly Calvin, NCAR NSF C-130 Platform Report Robert Wood (a) 20 o S Cross-Sections [4 full missions+5 partial missions] - to characterize structure of MBL, aerosols, clouds along the 20 o S parallel from o W - collaborative (RHB, BAe-146, Do-228, G-1) (b) POC Drift missions [5 missions including 1 POC Lagrangian with BAe-146] - investigate structure of boundary between closed and open cellular stratocumulus (c) Pollution Surveys [2 missions total] - coast-parallel surveys to 30 o S to study how pollutants are transported into the MBL RAF instruments: Microphysics, Turbulence, Thermodynamics suite, Radiation Special Remote sensing: Wyoming Cloud Radar (zenith+nadir+slant), Cloud Lidar (zenith), Microwave radiometer (GVR, 183 GHz, zenith) Special Chemistry/aerosols/clouds: CCN, CVI, Streakers, Giant CCN, Special CN counters (+ultrafine), LDMA, RDMA, Aerosol Mass Spec, volatility, nephelometer, SP2/PSAP, DMS/SO 2,Cloud water collector, CO/O 3, fast FSSP MISSIONS INSTRUMENTS

20 o S Missions 20 o S/85 o W Relative humidity – very dry free troposphere o W height [km] Wyoming cloud radar – widespread drizzle height [km] o W Boundary layer depth [all 20 o S missions] remarkable synoptic variability

POC Missions Optically thick cell walls Optically thin cell centers 10 km Lowest CN concentration ever measured Remarkable contrasts in microphysics and cloud dynamics across POC boundary [aerosols, drizzle, cloud structure and morphology, CO and O 3 ] Ultraclean clouds in optically-thin cloud centers Quasi-linear boundary cells with copious drizzle scavenge aerosols

Pollution survey missions [SO 2 ] ppt Cloud RF12, November 11 th 2008 Santiago Elevated SO 2 layers entraining into MBL Diurnal flushing of continental air