Multisensor estimation of evapotranspiration in a semi-arid grassland

Friday, 19 December 2014: 2:40 PM
Valentijn R N Pauwels1, Mei Sun Yee1, Jason Beringer2, Edoardo Daly3, Jeffrey P Walker4 and Christoph Rudiger5, (1)Monash University, Melbourne, Australia, (2)Monash Univ, Melbourne, Australia, (3)Monash University, Melbourne, VIC, Australia, (4)Monash University, Clayton, VIC, Australia, (5)Monash University, Clayton, Australia
Evapotranspiration (ET) is an important component of the hydrological cycle, particularly in arid and semi-arid areas where most of the precipitation is returned to the atmosphere via ET. ET also drives the
land-surface energy balance, largely affecting soil temperature and the heat exchange between the land and atmosphere. Therefore, reliable measurements of ET are needed to evaluate and improve
climate and weather predictions, and water resource management. ET can be measured based on various methods which differ in spatial and temporal time scales and principles. This study compares different methods (microwave scintillometers, eddy covariance, enclosed chambers) within the Murrumbidgee Catchment.