Ma. Naumenko et Sg. Karetnikov, USE OF SATELLITE IR INFORMATION TO STUDY THE THERMAL STATE OF LAKE-LADOGA, Soviet journal of remote sensing, 11(4), 1994, pp. 661-673
The results of synchronous ship observations and NOAA-AVHRR IR surveys
of Lake Ladoga are analysed. The possibility of temperature calibrati
on of the satellite data without using ground information is discussed
. The water with the greatest density (4-degrees-C) associated with th
e Spring frontal thermal zone, is used as a reference; this is identif
iable from the extremal values in the brightness histogram.