AVHRR: Advanced Very High Resolution Radiometers

· AVHRR acquires data in visible and NIR.

· IFOV (instantaneous field of view) can also be used

for images.

· The visible light is measured from .58-.68

micrometers, and is used for daytime cloud and surface

mapping.

· NIR is measured from .725-1.1 micrometers, and is

used for surface water delineation and vegetation

coverage mapping.

· AVHRR also uses, MIR (mid infrared) and is measured

from 3.55-3.93 micrometers, and is used for SST (sea

surface temperature) and nighttime cloud mapping.

· TIR (thermal infrared) and is measured from

10.5-12.5 micrometers and it’s used for SST and

day/night could mapping.

· The spatial resolution is in equal angle grids of

4096 pixels/360 degrees, referred to as 9km

resolution. 2048 pixels/360 degrees-18km resolution.

720/360 degrees-54km resolutions or 0.5 resolutions.

AVHRR data sets are available in a variety of spatial

and temporal resolutions, map projections and other

formats for research of all scientific interests.

Available through a FTP or jpl.po.dacc

Sources: