Author(s): D. Papanastasopoulos; G. Petropoulos
Linked Author(s):
Keywords: Land surface temperature; Vegetation index; Remote sensing
Abstract: Land Surface Temperature (LST) are derived from the thermal infrared channels of the Advanced Very High Resolution Radiometer (AVHRR) sensor on board NOAA15 satellite, and the Normalised Vegetation Index (NDVI) from the visible and near infrared channels. The LST is different from the air temperature measured in a meteorological-screen, which attempts to characterize the air mass properties as independently as possible of underlying surface properties, where as LST is the temperature just above the land surface. NDVI is a vegetation index widely used in evapotranspiration studies and can be estimated over both space and time using satellite technology. Efforts are to compare and link LST with the available ground based measurements in an area where the network is rather poor and inefficient. Statistical analysis of a series of images gave a good correlation of LST with air and soil temperature measurements from ground stations. Space –time changes of both LST and NDVI along with their interrelationships are also presented.
Year: 2003