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AERONET-Proposed ground-based RS Aerosol Measurements for UAE

AERONET-Proposed ground-based RS Aerosol Measurements for UAE. Brent Holben, 1 Tom Eck, 1,2 Alexander Smirnov 2 , Oleg Dubovik 2 1 NASA Goddard Space Flight Center, Directorate of Earth Sciences

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AERONET-Proposed ground-based RS Aerosol Measurements for UAE

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  1. AERONET-Proposed ground-based RS Aerosol Measurements for UAE Brent Holben, 1 Tom Eck,1,2 Alexander Smirnov2, Oleg Dubovik2 1NASA Goddard Space Flight Center, Directorate of Earth Sciences 2Goddard Earth Sciences and Technological Center (GESTC)University of Maryland Baltimore County (UMBC) Outline • Overview of the AERONET program • AERONET Products and analysis • Proposed AERONET sites • Requested In-country support • Summary of Proposed AERONET Measurements for UAE http://aeronet.gsfc.nasa.gov More information —>

  2. AERONET: A Federation of International Collaborators • Research & Operations • Program of long term measurements for aerosol research and environmental assessment • Homepage access http://aeronet.gsfc.nasa.gov/ • Project Objectives • Validation of Satellite Aerosol Retrievals • Characterization of aerosol optical properties • Synergism with Satellite obs., Climate Models • Provide mesoscale observations during regional field campaigns

  3. Characteristics of AERONET sun and sky scanning Radiometer Flux measurements Direct - l=340, 380, 440, 500, 670, 870, 940, 1020 nm Diffuse - l=440, 670, 870, 1020 nm (alm, pp, pol) • Holben et al. RSE, 1998 • Holben et al. JGR, 2001 • Eck et al. JGR, 1999 • Smirnov et al. JGR, 2000 • Dubovik & King JGR, 2000 • Dubovik et al. JGR 2000 Calibration and processing information Aerosol optical depth and precipitable water computations Cloud screening and quality control Inversion products Volume size distribution (0.05<R<15 mm), refractive index, single scattering albedo (l=440, 670, 870, 1020 nm)

  4. AERONET Products Precipitable Water (15 min) Aerosol Optical Depth (15 min) AOD Climatology Size Distributions Single Scattering Albedo

  5. AERONET global comparison: Properties from four Generic types

  6. Proposed AERONET Distribution Current Sites Proposed sites MAARCO site

  7. AERONET requested Support • Authorization for new sites • Logistical support to establish sites • Technical and logistical assistance to maintain sites • All AERONET data and products will be available in near real-time through the internet • http://aeronet.gsfc.nasa.gov

  8. AERONET Measurement Objectives for UAE • Measure accurately and continuously the column integrated mesoscale aerosol optical properties • Measure, for the first time, UV through Infrared sky radiance for retrievals of particle size distribution, single scattering albedo and complex index of refraction • Measure for the first time ocean leaving radiance for dust aerosol with the SeaPRISM. • Intercompare CAR/AERONET/AATS retrievals of aerosol properties to simultaneous retrievals of in situ microphysics measurements from MAARCO and Aerocommander platforms • Validation and comparison: • MPL (vertical distribution of aerosol) • SeaPRISM (water leaving radiance) • MODIS/TOMS/SeaWiFS

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