Konteksts: [..] Observation error is referred to errors in identifying the variables i.e. Land cover (level 3), Land use, Irrigation, Isolated trees, Natural Hazards and transect). For the other characteristics to be observed in LUCAS (noise, erosion, ) the observation error is not always possible to detect, because the difference between the survey data and the verification (check) data can derive from the actual change in the time in between the survey and the control [..]
Avots: LUCAS Land Use/Cover Area Frame Statistical Survey, Technical Document No 7, Quality assurance and control procedures