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Comprehensive Aerosol Measurement Campaign in Southern Africa during Dry Season

This study presents coordinated airborne, spaceborne, and ground-based measurements of thick aerosol layers in Southern Africa during the dry season. Data from various instruments like sunphotometers, lidars, and radiometers were collected to analyze aerosol optical properties and size distributions. Validation with MODIS and MISR data was also performed to assess aerosol characteristics over land and water surfaces.

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Comprehensive Aerosol Measurement Campaign in Southern Africa during Dry Season

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  1. Coordinated airborne, spaceborne, and ground-based measurements of massive, thick aerosol layers during the dry season in Southern Africa B. Schmid BAER/NASA Ames Moffett Field, CA, USAJ. Redemann BAER/NASA Ames P. Russell NASA Ames P. Hobbs University of Washington, Seattle, WA, USA D. Hlavka SSAI/NASA Goddard Greenbelt, MD, USA M. McGill NASA Goddard B. Holben NASA Goddard E. Welton GEST/NASA Goddard J. Campbell SSAI/NASA Goddard A. Chu SSAI/NASA Goddard O. Torres JCET-UMBC/NASA Goddard R. Kahn Jet Propulsion Laboratory Pasadena, CA, USA D. Diner Jet Propulsion Laboratory M. Helmlinger Jet Propulsion Laboratory C. Robles Gonzalez TNO Physics and Electronics Laboratory, The Hague, The Netherlands G. de Leeuw TNO Physics and Electronics Laboratory

  2. NASA Ames Airborne Tracking 14-Channel Sunphotometer (AATS-14) • Aerosol Optical Depth/Extinction • (354-1558 nm, 12 wavelengths) • Water Vapor Column/Density • 24 data flights on CV-580 UNIVERSITY OF WASHINGTON CV-580 31 Flights (120 hours) during SAFARI-2000

  3. Cimel Sun/sky radiometers • ~20 Southern African sites during SAFARI-2000 • Aerosol Optical Depth at 7 wavelengths • Size Distributions • Single Scattering Albedo

  4. CV-580 fly-by’s of AERONET sites

  5. Flying through smoke plume, north of Skukuza, South Africa, August 17, 2000

  6. Spectra and Size Distrubitions in- and outside of smoke plume

  7. AATS-14 Vertical profile at Skukuza

  8. Micro Pulse Lidar • 2 sites during SAFARI-2000 • Aerosol Extinction Profiles 523 nm • Aerosol extinction and AOD profiles at 532 and 1064 nm • from ER-2 Altitude ~20 km to ground

  9. Aerosol profile from ground-based and airborne lidars and airborne sun photometer: Skukuza, South Africa, 22 August 2000

  10. Aerosol profile from lidar on ER-2 and sunphotometer on CV-580Inhaca Island, Mocambique, 24 August 2000

  11. AOD Validationwith AATS-14 Absorbing Aerosol Index, AOD (380 nm), w(380 nm)

  12. w=0.925

  13. w=0.833

  14. w=1.000

  15. MODIS Moderate-resolution Imaging Spectroradiometer AOD Validationwith AATS-14

  16. MODIS over water (AOD at 6 wavelengths +1 extrapolated, some size characteristics)

  17. MODIS over land (AOD at 2 wavelengths + 1 interpolated)

  18. AOD Validation with AATS-14

  19. September 3, 2000 MISR, Nadir

  20. MISR AOD over land (4 wavelengths), aerosol type Unvalidated MISR standard algorithm

  21. MISR AOD over water (4 wavelengths), aerosol type Unvalidated MISR standard algorithm

  22. Along Track Scanning Radiometer ATSR-2

  23. ATSR-2 vs. AATS-14 off Namibian Coast, September 14, 2000

  24. Thank you for your attention.

  25. MISR AOD over land (4 wavelengths), aerosol type Unvalidated MISR standard algorithm

  26. MISR AOD over water (4 wavelengths), aerosol type Unvalidated MISR standard algorithm

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