Comparison of airborne and ground measurements of surface temperature and surface soil water content in crop fields.
Abstract
Remote sensing techniques become more and more significant for various applications in Agricultural Hydrology due to technical development in sensoring and data handling. Information about soil surface characteristics in a high spatial resolution is important for a number of hydrological, agrometeorological and ecological aspects. In this case study, the agreement of ground based measurements with data of soil surface temperatures and soil water content (upper layers) recorded from a helicopter is investigated. The soil surface temperature, measured with an IR-sensor from a helicopter, showed clear differences between the various test fields due to different soil coverages and surface characteristics. The relative agreement with ground based measurements was good although differences in absolute values were found. The values of soil surface water content, measured on ground, showed significant variations, even within shortest distances. Airborne L-Band Measurements can give an overview of soil moisture distribution of the observed surfaces. To calculate absolute values of water content, additional information of the investigated surface area is necessary .
remote sensing soil water content
Publikationen
Project staff
Josef Eitzinger
Univ.Prof. Dipl.-Ing. Dr.nat.techn. Josef Eitzinger
josef.eitzinger@boku.ac.at
Tel: +43 1 47654-81422
Project Staff
01.01.1996 - 31.12.1998
BOKU partners
External partners
Geological Survey Vienna
none
partner