According to the meteorologicalobservation in Minqin Desert Control Experiment Station, variations of frost-free period, low temperature in spring and frozen earth were analyzed.
The automatic station is an automatic processing instrument for surface meteorologicalobservation, and its operation and maintenance is more complex.
自动站是应用于地面气象测报工作的自动处理仪器，操作维护较复杂。
3
Based on the data of the monitoring of NOAA meteorological satellite and the observed soil moisture at the surface observationstation, drought index was expatiated in Anhui Province.