Ground-Truth Experiments for the Calibration and Validation of Satellite Microwave Radiometer Data

Ground-truth experiments are needed to calibrate and validate satellite microwave data and to improve the quality and utilization efficiency of satellite data in solving problems of hydrometeorological support. This paper considers the arrangement of specialized test observatories in the satellite data validation subsystem exemplified by the geophysical observatory in Lehtusi (a town in Leningrad oblast), describes the state and prospects of its equipping with modern tools of contact and remote measurements of meteorological parameters, and indicates directions of scientific research.