%0 Dataset
%T Dataset of Heihe integrated observatory network (Large aperture scintillometer of Daman Superstation, 2025)
%J National Cryosphere Desert Data Center
%I National Cryosphere Desert Data Center(www.ncdc.ac.cn)
%U http://www.ncdc.ac.cn/portal/metadata/94e6da6c-8008-4640-8066-ec8061eddee8
%W NCDC
%R 10.12072/ncdc.heihe.db7605.2026
%A Liu shaomin
%A Xu ziwei
%A Che Tao
%A Tan Junlei
%A Ren zhiguo
%A Zhang Yang
%K Comprehensive Observation Network for Surface Processes in the Heihe River Basin;large aperture scintillometer;sensible heat flux
%X This dataset contains the flux measurements from the large aperture scintillometer (LAS) at Daman Superstation in the Heihe integrated observatory network from January 1 to December 31 in 2025. There were two types of LASs at Daman Superstation: BLS900 and RR-RSS460, produced by Germany. The north tower was set up with the BLS900 receiver and the RR-RSS460 transmitter, and the south tower was equipped with the BLS900 transmitter and the RR-RSS460 receiver. The site (north: 100.379° E, 38.861° N; south: 100.369° E, 38.847° N) was located in Daman irrigation district, which is near Zhangye, Gansu Province. The underlying surfaces between the two towers were corn, orchard, and greenhouse. The elevation is 1556 m. The effective height of the LASs was 24.1 m, and the path length was 1854 m. The data were sampled 1 minute at both BLS900 and RR-RSS460.The raw data acquired at 1 min intervals were processed and quality controlled. The data were subsequently averaged over 30 min periods, in which sensible heat flux was iteratively calculated by combining Cn2 with meteorological data according to the Monin-Obukhov similarity theory. The main quality control steps were as follows: (1) The data were rejected when Cn2 exceeded the saturated criterion (BLS900：Cn2>7.25E-14，RR-RSS460：Cn2>7.84 E-14). (2) The data were rejected when the demodulation signal was small (BLS900：Average X Intensity-20mv). (3) The data were rejected when collected during precipitation. In the iteration process, the universal functions of Thiermann and Grassl (1992) and Andreas (1988) were selected for BLS900 and RR-RSS460, respectively.Several instructions were included with the released data. (1) The data were primarily obtained from BLS900 measurements, and missing flux measurements from the BLS900 instrument were substituted with measurements from the RR-RSS460 instrument. The missing data were denoted by -9999. (2) The dataset contained the following variables: Date/time (yyyy/m/d h:mm), the structural