1. NASA alert as Russian and US satellites crash in space
A privately owned US communications satellite collided with a defunct Russian military satellite in the first such mishap in space

2. MODIS (Moderate-resolution Imaging Spectroradiometer)
Launched by NASA in 1999 on the Terra (EOS AM) satellite, and in 2002 on the Aqua (EOS PM) satellite.
36 spectral bands ranging in wavelength from 0.4 µm to 14.4 µm and at spatial resolutions between 250m and 1km.
Terra: 10.30am descending
Aqua: pm ascending
Swath: km Earth covered every 1-2 days
Designed to combine some of the characteristics of AVHRR and Landsat TM plus atmospheric and cloud parameters

4. Indiana spring floods http://earthobservatory.nasa.gov/IOTD/

5. Retreat of the Ellesmere Island Ice shelf http://earthobservatory.nasa.gov/Features/Ellesmere

6. MODIS bands and wavelengths

8. MODIS THEMES

9. MODIS Land Products / Research Themes
Energy Balance Product
- Surface Reflectance
Land Surface Temperature
BRDF/Albedo
Snow Cover
Vegetation Parameters
Vegetation Indices
LAI/FPAR
NPP/PSN
Land Cover Land Use
Land Cover
Vegetation Continuous Fields
Vegetation Cover Change
Fire and Burned Area
Global Water Cycle and Energy Balance
Biology and Biogeochemistry of Ecosystems and the Global Carbon Cycle
Land Cover and Land Use Change
Atmospheric Chemistry and Aerosols

10. MODIS : available data

12. MODIS Fires, NW Australia, Oct 2, 2000
MODLAND/Justice et al

13. AVHRR (3.45am) MODIS (10.30am)
MODLAND/Justice et al
Oct 2, 2000

14. CCRS scientists have produced the first-ever, high resolution, circumpolar satellite image by compositing cloud-free images from the MODIS sensor
Vegetation – see also:

15. Percent tree cover map of the U. S. from 250 meter MODIS data 0%
100%
Overcome fixed boundaries between classes inherent in classification approach
Independent of strict class type definitions
Possible to apply temporally to identify changes in % cover
Derived from MODIS imagery with calibration and validation from high resolution data
500 km
Percent tree cover map of the U. S. from 250 meter MODIS data
using maximum NDVI composite for summer 2000 acquisitions
MODLAND/Townshend et al

16. Land cover

17. 32 day composite: bands 1-7, 700mb (landcover.org):

18. Feb-March

19. GPP: The rate at which light energy is converted to plant biomass is termed primary productivity. The sum total of the converted energy is called gross primary productivity (GPP)

20. MODIS GPP Product
MODLAND/Running et al.

21. MODIS THEMES http://rapidfire.sci.gsfc.nasa.gov/gallery/
MODIS / ASTER assignment due March 24

22. MODIS – snow: Thursday 10 March, Joe Shea