moderate

Moderate-Resolution Imaging Spectroradiometer

MODIS (Moderate-resolution Imaging Spectroradiometer) is a payload scientific instrument launched into Earth orbit by NASA in 1999 on board the Terra (EOS AM) Satellite, and in 2002 on board the Aqua (EOS PM) satellite. The instruments capture data in 36 spectral bands ranging in wavelength from 0.4 µm to 14.4 µm and at varying spatial resolutions (2 bands at 250 m, 5 bands at 500 m and 29 bands at 1 km). Together the instruments image the entire Earth every 1 to 2 days. They are designed to provide measurements in large-scale global dynamics including changes in Earth's cloud cover, radiation budget and processes occurring in the oceans, on land, and in the lower atmosphere.

Specifications
Orbit 705 km, 10:30 a.m. descending node (Terra) or 1:30 p.m. ascending node (Aqua), sun-synchronous, near-polar, circular
Scan Rate 20.3 rpm, cross track
Swath 2330 km (cross track) by 10 km (along track at nadir)
Dimensions
Telescope 17.78 cm diam. off-axis, afocal (collimated), with intermediate field stop
Size 1.0 x 1.6 x 1.0 m
Weight 228.7 kg
Power 162.5 W (single orbit average)
Data Rate 10.6 Mbit/s (peak daytime); 6.1 Mbit/s (orbital average)
Quantization 12 bits
Spatial Resolution 250 m (bands 1-2) 500 m (bands 3-7) 1000 m (bands 8-36)
Design Life 6 years

MODIS Bands

Band Wavelength
(nm)
Resolution
(m)
Primary Use
1

620-670

250m Land/Cloud/Aerosols
Boundaries
2

841-876

250m
3

459-479

500m Land/Cloud/Aerosols
Properties
4

545-565

500m
5

1230-1250

500m
6

1628-1652

500m
7

2105-2155

500m
8

405-420

1000m Ocean Color/
Phytoplankton/
Biogeochemistry
9

438-448

1000m
10

483-493

1000m
11

526-536

1000m
12

546-556

1000m
13

662-672

1000m
14

673-683

1000m
15

743-753

1000m
16

862-877

1000m
17

890-920

1000m Atmospheric
Water Vapor
18

931-941

1000m
19

915-965

1000m
Band Wavelength
(µm)
Resolution
(m)
Primary Use
20

3.660-3.840

1000m Surface/Cloud
Temperature
21

3.929-3.989

1000m
22

3.929-3.989

1000m
23

4.020-4.080

1000m
24

4.433-4.498

1000m Atmospheric
Temperature
25

4.482-4.549

1000m
26

1.360-1.390

1000m Cirrus Clouds
Water Vapor
27

6.535-6.895

1000m
28

7.175-7.475

1000m
29

8.400-8.700

1000m Cloud Properties
30

9.580-9.880

1000m Ozone
31

10.780-11.280

1000m Surface/Cloud
Temperature
32

11.770-12.270

1000m
33

13.185-13.485

1000m Cloud Top
Altitude
34

13.485-13.785

1000m
35

13.785-14.085

1000m
36

14.085-14.385

1000m

See also

External links

Search another word or see moderateon Dictionary | Thesaurus |Spanish
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature
FAVORITES
RECENT

;