Cosmic ray neutron method is a nondestructive method for measuring soil moisture at the scale of 100 meters. This data is input from the neutron sequence synchronously measured by the Cosmic Ray Soil Moisture Observation System (COSMOS) in Qingmuguan Trough Valley District, Chongqing, and combined with the multi-layer soil moisture observation data of multiple stations around, a soil moisture inversion algorithm for this neutron observation is developed. The inversion algorithm introduces S-G filtering to smooth the COSMOS fast neutron number, and optimizes the data screening schemes in different calibration and verification stages of the algorithm. In addition, the meteorological data (mainly atmospheric pressure) required for inversion is provided by the automatic meteorological stations arranged around COSMOS stations to correct the original neutron number. The time resolution of cosmic ray soil moisture inversion sequence generated by the algorithm is 1h.
1. File name: soil moisture and precipitation data are stored in excel format. The name of the file is "QMG-Hydro_COSMOS_SM. xlsx". Data recording time (UTC+8), original fast and slow neutron concentrations, and retrieved regional soil moisture are displayed in columns within the document. The default value is - 99.
2. Data reading method: The data set is in Excel format, and can be read by common data processing software such as EXCEL and MATLAB. The data has 1 file in total.
Zhao, L. (2022). COSMOS-based Soil Moisture Observations in Southwest China (2018-2020). Upper Yangtze River Scientific Data Center, (Download the reference：
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