However, scientists choose specific bands to combine in order to target a particular landform characteristic, such as: healthy vegetation, soil moisture, or ocean algae blooms. We call these joined band combinations composites.
321 True-Color Composite |
432 Near Infrared Composite |
453 Color Composite |
742 Color Composite SWIR |
3) 453 Color Composite:
Band 5 detects radiation in the mid
Infrared wavelength area. this band is useful for distinguishing snow from
clouds and determining vegetation and soil moisture content. Thus, the
453 bands might be useful in determining the "wetness" or moisture-health
of plants.
4) The 742 Short-wave Infrared Composite
(743 or 742)
a) Why is this band combination
good for detecting if vegetation is dried out?
b) Why are 743 Composites
also good for studying soil types?
c) What does SWIR stand
for?
| Band Number | Wavelength (micrometers) | Spectral Response | Resolution (m) | Characteristic of Lt. Reflection | Principal Applications: |
| 1 | 0.45-0.52 | Blue-Green | 30 | Blue-VISible | Mapping coastal waters, forest types, roads, etc. |
| 2 | 0.52-0.60 | Green | 30 | ||
| 3 | 0.63- 0.69 | Red |
30 |
||
| 4 | 0.76-0.90 | Near IR | 30 | ||
| 5 | 1.55-1.75 | Mid IR | 30 | ||
| 6 | 10.40-12.50 | Thermal IR | 120 | ||
| 7 | 2.08-2.35 | Mid- IR | 30 | Distinguishes between mineral & rock types |
State/ National Education Standards and Benchmarks Addressed by this Lesson:
| VA Standards Of Learnings : ES.12 :"Energy in the earth system" | National Science Education Standards: 9-12: "Energy in the earth system" | Benchmarks : Grades 9 through 12:" A system in equilibrium" |
Abstract: Students will be introduced to Remote Sensing Imaging of Thermal Data in order to investigate whether growing amounts of Impervious Surfaces in the Baltimore-Washington D.C. area are causing an increase in local atmospheric temperatures.
| Background | Preparation | Procedure | References |
Bye for now, and Thanks for joining us !!
