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REGIONAL DISTURBANCE OVER AMAZON FOREST FROM A SYNOPTIC-SCALE EVENT

LBA Conference: Amazon in perspective. Integrated Science for a sustainable future. 17-20 Nov 2008. REGIONAL DISTURBANCE OVER AMAZON FOREST FROM A SYNOPTIC-SCALE EVENT. Robinson Negrón Juárez Jeffrey Q. Chambers Hongcheng Zeng

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REGIONAL DISTURBANCE OVER AMAZON FOREST FROM A SYNOPTIC-SCALE EVENT

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  1. LBA Conference: Amazon in perspective. Integrated Science for a sustainable future. 17-20 Nov 2008 REGIONAL DISTURBANCE OVER AMAZON FOREST FROM A SYNOPTIC-SCALE EVENT Robinson Negrón Juárez Jeffrey Q. Chambers Hongcheng Zeng Ecology and Evolutionary Biology, Tulane University, New Orleans, USA Niro Higuchi Giuliano Guimaraes Daniel Marra National Institute for Amazonian Research (INPA), Av. Andre Araujo 2936, CEP: 69060-001, Manaus-AM, Brazil 14:40-15:00. 17Nov2008. Manaus, Amazonas, Brasil

  2. LBA Conference: Amazon in perspective. Integrated Science for a sustainable future. 17-20 Nov 2008 Squall Line Manaus Airport, 18 Jan 2005, 22:30 LT 14ms-1 Alonso, M. F., and Saraiva, J. M, (2005). Symposium on Nowcasting and Very Short Range Forecasting. France, 5-9 September 2005. Poster 6.12.

  3. LBA Conference: Amazon in perspective. Integrated Science for a sustainable future. 17-20 Nov 2008 Landsat

  4. LBA Conference: Amazon in perspective. Integrated Science for a sustainable future. 17-20 Nov 2008 Image processing 1. Georeference. -> with respect to NASA Geocover data (https://zulu.ssc.nasa.gov/mrsid/). 3. Haze & Smoke contamination removal: Carlotto technique (1999, IJRS) 2. Atmospheric CORrection Now (ACORN) software (ImpSpec LLC, Boulder, CO). ACORN-> 2004 image 4. Images intercalibration: Invariant targets: 2005 image -> 2004 image. 5. Masking non-forest areas. Spectral Mixture Analysis (SMA) Pixel spectra is a linear combination of endmembers (Roberts et al. 1993, Rem. Sens. Environ. , Chambers et al. 2007, Trends in Ecology & Evolution ) Single set of endmembers: Green Vegetation (GV) None-photosynthetic vegetation (NPV) Soil Shade

  5. LBA Conference: Amazon in perspective. Integrated Science for a sustainable future. 17-20 Nov 2008 Forest Disturbance Monitoring      5 sites. 6 20m×20m-plots per site.

  6. LBA Conference: Amazon in perspective. Integrated Science for a sustainable future. 17-20 Nov 2008 Mapping Tree Mortality Changes in the NPV ( ΔNPV) quantifying tree mortality rates (Chambers et al. 2007, Science.) Mortality (%)=103.22×ΔNPV-3.3235 n=30, r2=0.8 , p<0.0001 Disturbance= 244 km2

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