Remote Sensing Phenology
The sensor responsible for the longest running series of NDVI products used for large-area phenology studies is carried aboard National Oceanic and Atmospheric Administration (NOAA) polar-orbiting weather satellites (see Table 1). This sensor, known as the Advanced Very High Resolution Radiometer (AVHRR), has a daily repeat cycle and, despite its name, a 1-km resolution (an AVHRR image pixel represents 1 square km of land surface). AVHRR data are used to generate NDVI-based images of the planet's land surface on a regular basis, thereby creating image series that portray seasonal and annual changes to vegetation worldwide. AVHRR NDVI data are available in a consistently processed database from 1982-present at an 8-km re-sampling grid covering the entire planet, and from 1989-present at a 1-km resolution for the conterminous United States.
Below are other science projects associated with this project.
NDVI from Other Sensors
NDVI, the Foundation for Remote Sensing Phenology
The sensor responsible for the longest running series of NDVI products used for large-area phenology studies is carried aboard National Oceanic and Atmospheric Administration (NOAA) polar-orbiting weather satellites (see Table 1). This sensor, known as the Advanced Very High Resolution Radiometer (AVHRR), has a daily repeat cycle and, despite its name, a 1-km resolution (an AVHRR image pixel represents 1 square km of land surface). AVHRR data are used to generate NDVI-based images of the planet's land surface on a regular basis, thereby creating image series that portray seasonal and annual changes to vegetation worldwide. AVHRR NDVI data are available in a consistently processed database from 1982-present at an 8-km re-sampling grid covering the entire planet, and from 1989-present at a 1-km resolution for the conterminous United States.
Below are other science projects associated with this project.