|
The Advanced Very High Resolution Radiometer (AVHRR) instrument flies on the
NOAA Polar Operational Environmental Satellites (POES) and the European
MetOp Satellites. AVHRR is used to image a large variety of Earth phenomena,
including vegetation, clouds, dust, snow, ice, fire, and surface temperature.
Sea surface temperature (SST) is generated in near real-time using AVHRR's
infrared channels by NOAA/NESDIS from High Resolution Picture Transmission
(HRPT) overpasses (1.1 km at nadir) using Seaspace's TeraScan software and
NOAA's multi-channel regression algorithm (Li et al., 2001a & 2001b). With
the various satellite instances, overpasses occur at roughly 1:30am,
9:30am, 1:30pm, 9:30pm (local time) per day.
The individual daytime and nighttime SST scenes from each operational POES
and MetOp satellite are composited by NOAA CoastWatch into daily combined
day-night mean grids for the U.S. east coast (at approximately 1.25 km).
The daily gridded scenes are then composited into 3-day, 7-day, monthly,
seasonal and annual average grids.
The data time series spans 2008 to the present. Data users interested in long
time series may opt to use this product, whereas data users interested in
near-realtime applications may opt to use the
AVHRR-VIIRS Multi-sensor Composite SST,
produced with improved algorithms but with a shorter historical time span.
References:
Li, X., W. Pichel, E. Maturi, P. Clemente-Colon, J. Sapper. 2001. Deriving the
operational nonlinear multichannel sea surface temperature algorithm
coefficients for NOAA-15 AVHRR/3, International Journal of Remote Sensing,
vol. 22, no. 4, pp. 699-704.
Li., X., W. Pichel, P. Clemente-Colon, V. Krasnopolsky, J. Sapper. 2001.
Validation of coastal sea and lake surface temperature measurements derived
from NOAA/AVHRR data. International Journal of Remote Sensing, vol. 22, no. 7,
pp. 1285-1303.
|
