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Chilean atmospheric contribution & Land site: PAPOSO 25º0’S,70º27’,700 ma.s.l.

Site. S. W. Chilean atmospheric contribution & Land site: PAPOSO 25º0’S,70º27’,700 ma.s.l. ATM_CL: overview PAPOSO Main features Measurements Issues: Energy Housing/containers Permits/contacts. Our aims.

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Chilean atmospheric contribution & Land site: PAPOSO 25º0’S,70º27’,700 ma.s.l.

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  1. Site S W Chilean atmospheric contribution & Land site: PAPOSO25º0’S,70º27’,700 ma.s.l. • ATM_CL: overview • PAPOSO • Main features • Measurements • Issues: • Energy • Housing/containers • Permits/contacts

  2. Our aims • Understanding of the dynamics of the coastal LLJ system and its relationship with low-cloud cover variability and coastal upwelling (R. Garreaud, J. Rutllant, R. Muñoz) • Increasing our understanding of how anthropogenic and natural aerosols, mainly sulfate aerosols, interact with the persistent Sc deck in the coastal areas of Central and Northern Chile (A.M. Córdova, L. Gallardo) • Understanding offshore transport of coastally upwelled water by mesoscale processes and the coastal transition zone jet off Chile and its role on the mesoscale (meandrings) (O. Pizarro)

  3. Antofagasta: 23.4S Paposo: 25 S

  4. Synop station, 3 soundings/day Land site/Aerosols & CCN • Urban areas • Antofagasta ~300 k inhab • Taltal ~ 12 k inhab • Mejillones ~ 10 k inhab • Calama ~ 140 k inhab • Smelters (2006, kgS/s) • Chuquicamata ~ 1.2 • Alto Norte ~ 0.4 • Potrerillos ~ 0.9 • Paipote ~0.3 • Power Plants (2005, kgS/s) • Mejillones (2) ~ 0.9 • Tocopilla (2) ~ 0.5 • Paposo ~0.00005 • Volcanoes (kgS/s) • Láscar ~ 14 • Lastarria ? • Paranal & ALMA are astronomical observatories “Superposition” of google earth image and OMI-SO2

  5. LAND SITE • Objectives: • Identify the origin and composition of the aerosols that act as CCN in the coastal Sc • Characterize the local and meso-scale circulations, and the evolution of the coastal MBL • Instruments • CVI(s), AMS (?), photometer(s), soundings, ceilometer, MOUDI(?) (S ~ 20-25 kW) • Models: WRF-Chem; ECMWF+MATCH; CCATT-BRAMS (?)

  6. Issues • Energy supply…20-25 kW required • Provided by the power plant? Expensive and lengthy • Propane generators? • Diesel generator • S~6-8 kUSD • Housing • Repair of shelter in place • Container(s) • S~2-3 kUSD • Permits • Under way

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