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Criando nuvens de gelo em laboratório Prof. Manfredo H Tabacniks IFUSP/UMBC/NASA

Criando nuvens de gelo em laboratório Prof. Manfredo H Tabacniks IFUSP/UMBC/NASA 30 de outubro de 2008. Climate Change 2007: Syntesis Report. IPCC. Climate Change 2007: Syntesis Report. IPCC. Wavelength Frequency. Atmospheric scatterers. Rain drops. Ice crystals

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Criando nuvens de gelo em laboratório Prof. Manfredo H Tabacniks IFUSP/UMBC/NASA

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  1. Criando nuvens de gelo em laboratório Prof. Manfredo H Tabacniks IFUSP/UMBC/NASA 30 de outubro de 2008

  2. Climate Change 2007: Syntesis Report. IPCC

  3. Climate Change 2007: Syntesis Report. IPCC

  4. Wavelength Frequency Atmospheric scatterers Rain drops Ice crystals (hail, etc. greater) Cloud drops (typically 5-10 µm) Coarse aerosol (sand, dust sea salt) < Most aerosol (>0.01 µm) size wavelength ≈ > Air molecules ~0.0004 µm

  5. Aerosol Impact on Clouds Microphysics and Thermodynamics J. Vanderlei Martins, A. Marshak, L. A. Remer, D. Rosenfeld, Y. J. Kaufman, R. Fernandez-Borda, I. Koren, V. Zubko, P. Artaxo – ACPD 7, 4481-4519, 2007

  6. Smoke!!! Cloud Base 0.55mm 2.1mm

  7. Light Scattering Process light in light out (1-Absorption) Asymmetry Martins, V. personal comm.

  8. Measuring Clouds J. Vanderlei Martins, Alexander Marshak, Tobias Zinner, Lorraine Remer, ACP 2006, 2007, 2008.

  9. Range from simulations (Reflectances)

  10. água -30ºC  gelo Fermi (1936, p. 77) água -30ºC  água 0ºC água 0ºC  gelo gelo 0ºC  gelo -30ºC Kostinski & Cantrell, JAS 65 (2008) 2961-71

  11. aerosol generator and reactor T P P P T T MFM vacuum pump light ~100mm analyzer dewar INEF ringing absorpmeter ~m mixer 2 thermal insulation T P reactor drier humidifier cooler humid air (N2) cold (freezing) air drift tube or/and diffusion dryer ~30 cm Di ~10mm aerosol generator mixer 1 f1 Di ~20mm ~1 L/min ~20 cm dry N2 MFM f2 (soil dust) + suitable solvent ~1-10 L/min N2

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