ORBVIEW-2

Orbview-2 (sometimes called the Seastar) is part of Geoeye (formely Orbimage)’s satellite fleet. It carries NASA’s SeaWiFS sensor. This is an instrument developed to study the oceans from the standpoints of total chlorophyll content and eutrophication, and to establish a general standardized vegetation index (NDVI).

altitude: 705 km
inclination: 98.2 degrees
orbit: sun-synchronous polar
period of revolution: 99 minutes
revisit time: 1 day
satellite: OrbView 2 (01/08/1997– still operational)

 


SeaWiFS sensor (Sea Viewing Wide Field of View Sensor)
This multispectral optical sensor collects color imagery of the Earth’s land and ocean surfaces on a daily basis. Using different spectral bands yields images that can be used to study marine plankton and sediments, amongst other things. OrbView-2 provides imagery for maps used by commercial vessels to detect favorable oceanographic fishing conditions. The satellite also provides broad-area coverage in 2,800 km-wide swaths, which are routinely used in naval operations, environmental monitoring, and global crop-assessment applications.

Band
Spectral band
Resolution
Use
1 0,402 - 0,422 µm (purple) 1 x 1 km  
2 0,433 - 0,453 µm (purple - blue) 1 x 1 km low chlorophyll
3 0,480 - 0,500 µm (blue) 1 x 1 km other pigments
4 0,500 - 0,520 µm (green) 1 x 1 km  
5 0,545 - 0,565 µm (green) 1 x 1 km baseline chlorophyll
6 0,660 - 0,680 µm (red) 1 x 1 km subsurface scattering
7 0,745 - 0,785 µm (near IR) 1 x 1 km atmospheric correction
8 0,845 - 0,885 µm (near IR) 1 x 1 km atmospheric correction

Mission website

Data distributor


Dust from Sahara
© SeaWiFs project, NASA and Orbimage

 


Gulf of Mexico - Phytoplankton pigment concentration
© SeaWiFs project, NASA and Orbimage

Chlorophyll in Mediterranean
© SeaWiFs project, NASA and Orbimage