ADEOS - GLI - Global Imager (on ADEOS-2 Satellite, Japan)
 


ADEOS

ADEOS-2 was successfully launched on 14 December 2002!

GLI is an optical sensor developed by NASDA, to be carried on board the NASDA's ADEOS-2 satellite, scheduled to be launched in 2002. It observes the reflected solar radiation from the Earth's surface, including land, oceans and clouds and/or infrared radiation with a multi-channel system for measuring the biological content, such as chlorophyll, organic substance, and vegetation index as well as temperature, snow and ice, and cloud distribution. These data will be used for understanding the global circulation of carbon and climate changes.

The GLI will be equiped with 36 spectral channels from visible to infrared wavelengths. It has many visible channels, especially for ocean color observations. Its wide dynamic range is suitable for land observation. The resolution for all channels is 1-km for global coverage. However, there are six 250 m resolution channels covering the wavelength bands similar to those present in LANDSAT-TM.

GLI Instrument Characteristics

  • Orbit Altitude: 803 km
  • Orbit Type: Sun-Synchronous, at local solar time 10:30 am
  • Orbit Inclination angle: 98.6 deg
  • Orbit Period: 101 min.
  • Orbit Repeat Cycle: 4 days
  • Swath Width: 1600 km
  • Resolution: 1 km and 250 m

Spectral Bands of GLI

Channel Central Wavelength (nm) Bandwidth (nm) Applications* Resolution
1 380 10 O,A,C 1 km
2 400 10 O 1 km
3 412 10 O 1 km
4 443 10 O,L,A,C 1 km
5 460 10 O,L,A,C 1 km
6 490 10 O 1 km
7 520 10 O,A,C 1 km
8 545 10 O,A,C 1 km
9 565 10 O,L 1 km
10 625 10 O 1 km
11 666 10 O 1 km
12 680 10 O 1 km
13 678 10 L,A,C 1 km
14 710 10 O 1 km
15 710 10 L,A,C 1 km
16 749 10 O 1 km
17 763 10 L,A 1 km
18 865 10 O 1 km
19 865 10 L,A,C 1 km
20 460 70 L,A,C 250 m
21 545 50 L,A,C 250 m
22 660 60 L,A,C 250 m
23 825 110 L,A,C 250 m
24 1050 20 L,A,C 1 km
25 1135 70 A 1 km
26 1240 20 L,A,C 1 km
27 1380 40 A 1 km
28 1640 200 L,A,C 250 m
29 2210 220 L,A,C 250 m
30 3715 330 O,A,C 1 km
31 6700 500 A 1 km
32 7300 500 A 1 km
33 7500 500 A 1 km
34 8600 500 O,L,A,C 1 km
35 10800 1000 O,L,A,C 1 km
36 12000 1000 O,L,A,C 1 km

(* Note: O = Ocean; L = Land; A = Atmosphere; C = Cryosphere)


Link to:
GLI Home Page (http://sharaku.eorc.nasda.go.jp/GLI/) at EORC, NASDA, Japan.
ADEOS 2 Home Page at EORC, NASDA.
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Please send comments/enquiries/suggestions about this tutorial to Dr. S. C. Liew at scliew@nus.edu.sg Copyright CRISP, 2001