i.lswt computes Lake Water Surface Temperature (LSWT) from
moderate resolution polar orbiting satellites with dual thermal channels.
Given the Top Of Atmosphere(TOA) Brightness Temperatures (BT) derived
from the thermal channels of the supported satellites, the module
computes surface temperature. For water surface
(lakes/inland water bodies), the module uses a simplified
non-linear split-window algorithm.
NOTES
The non-linear split window equation used here is:
Where Ti and Tj are Brightness temperatures derived from dual thermal
channels 10.5 - 11.5 micro m and 11.5 - 12.5 micro m respectively.
The split window equation and the coefficients c0,c1,c2 are taken from Jimenez-Munoz et.al (2008).
The satellite specific split-window coefficients are taken from:
Jimenez-Munoz, J.-C., Sobrino, J.A., 2008. Split-Window Coefficients for Land Surface Temperature Retrieval From Low-Resolution Thermal Infrared Sensors.
IEEE Geoscience and Remote Sensing Letters 5, 806-809. doi:10.1109/LGRS.2008.2001636
A new method to develop continuos time series of LSWT from historical AVHRR is explained below, uses the same split window technique implemented here:
Pareeth, S., Delucchi, L., Metz, M., Rocchini, D., Devasthale, A., Raspaud, M., Adrian, R., Salmaso, N., Neteler, M., 2016.
New Automated Method to Develop Geometrically Corrected Time Series of Brightness Temperatures from Historical AVHRR LAC Data. Remote Sensing 8, 169.
doi:10.3390/rs8030169