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)

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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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