An inter-sensor calibration and atmospheric correction system for long-term time series of AVHRR imagery for coastal waters

Figures & data

Figure 1. Radiometric measurement and calibration.

Figure 2. Workflow of AVHRR data processing.

Figure 3. Implementation of the AVHRR data processing system.

Table 1. Five HRPT formats of 12 AVHRR sensors from 1980s.

Sensor	HRPT format
NA = NOAA-6	* * * POD Pre-8 September 1992 * * * * *
NC = NOAA-7
NE = NOAA-8
NF = NOAA-9		* * POD between 8 September 1992 and 15 November 1994 * *	* * POD Post-15 November 1994 * *
NG = NOAA-10
NH = NOAA-11
ND = NOAA-12
NJ = NOAA-14
NK = NOAA-15				* KLM Pre-28 April 2005 *	* * Post-14 November 2006 * *
NL = NOAA-16
NM = NOAA-17
NN = NOAA-18
Note: *Signifies the sensor used the HRPT format.

Figure 4. Raw digital number AVHRR image (top) and final projected reflectance image (bottom) of channel 1 of image NSS.HRPT.NM.D03364.S1717.E1727.B0788080.WI.

Figure 5. The Corpus Christi, Texas, area of image NSS.HRPT.NM.D03364.S1717.E1727.B0788080.WI. The area of 108 × 118 pixels are from channel 1 of this AVHRR scene. The top is the raw digital number (DN) image and its histogram. The middle is the calibrated planet reflectance image and its histogram. The bottom is the surface reflectance image and its histogram.