1 / 30

Cloud Contamination in Landsat Imagery: Cloud-Clearing with LTAP-8

Cloud Contamination in Landsat Imagery: Cloud-Clearing with LTAP-8. Samuel N. Goward, UMD Darrel L. Williams, NASA/GSFC Andrew Macatee, UMD Members : USGS/NASA Landsat Science Team. Global Land Remote Sensing in Landsat 7 Era. Year 2000 L7 “low-cloud” Coverage – USGS EROS.

ramla
Download Presentation

Cloud Contamination in Landsat Imagery: Cloud-Clearing with LTAP-8

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Cloud Contamination in Landsat Imagery: Cloud-Clearing with LTAP-8 Samuel N. Goward, UMDDarrel L. Williams, NASA/GSFCAndrew Macatee, UMD Members: USGS/NASA Landsat Science Team

  2. Global Land Remote Sensing in Landsat 7 Era Year 2000 L7 “low-cloud” Coverage – USGS EROS

  3. Map Quality Imageryfrom Remote Sensing • Land Surface Conditions • Orthorectified (DEMs) • Surface Reflectance (Atmosphere) • Cloud and Shadow-Free

  4. May 11 May 27 June 12 June 28 July 14 July 30 Cloud Contamination ProblemL7 16-Day Temporal Repeat – Washington DC region, 2000

  5. May 19 June 04 June 20 July 06 July 22 Aug 07 Cloud Contamination(L7 16-Day Temporal Repeat – Oregon region, 2000)

  6. ACCA 16% 02JUN02

  7. ACCA 5% 10JUN02

  8. ACCA 13% 18JUN02

  9. ACCA 10% 26JUN02

  10. ACCA 2% 04JUL02

  11. ACCA 0% 12JUL02

  12. ACCA 71% 20JUL02

  13. ACCA 10% 28JUL02

  14. ACCA 19% 05AUG02

  15. ACCA 0% 13AUG02

  16. ACCA 55% 21AUG02

  17. ACCA 90% 29AUG02

  18. ACCA 0% 06SEP02

  19. ACCA 80% 14SEP02

  20. ACCA 54% 22SEP02

  21. ACCA 10% 30SEP02

  22. Smallsat Constellations? GEOSS? Conceptual Ground Imaging tracks from a Constellation of 4 Polar and 1 Equatorial Satellites. Hansen, M, T. Loveland, et al, A Constellation of Mixed-Orbit Micro-Satellites for Monitoring Global Land Change and Ecosystem Dynamics, SDSU& USGS EROS

  23. June 2002

  24. July 2002

  25. August 2002 No Data

  26. September 2002

  27. Cloud/Shadow Clearingthrough Scene Merging • GOAL • Combine 2 or more scenes to produce a merged clear land observations (not image compositing). • APPROACH • atmospheric adjustment • cloud/shadow identification • land/water mask • “stable” land surface conditions • QUALITY ASSURANCE • Scatter plot evaluation

  28. June 2nd (red) June 18th (blue)

  29. June 28th (blue) August 13th (red)

  30. July 4th (red) August 5th (blue)

More Related