Application of HJ-1B Data in Monitoring Water Surface Temperature

The water surface temperature (WST) regarded as an important indicator of water environment, have been obtained from remotely sensed thermal data widely. One thermal band of the new HJ-1B satellite, provided with relatively both high temporal and spatial resolution may provide us a good chance for water thermal dynamic study. The suitability of HJ-1B data was evaluated, in simultaneously obtaining WST for large area, through a case study in Wuhan city. WSTs retrieved by different methods were compared with the MOD 11 product and the in situ measurements. Validation results show that more accurate result was obtained by using the revised single channel (Re_SC) algorithm, with the root mean square error (RMSE) and systematic error (SE) were 0.73K and -0.17K compared with the MOD 11. Its’ advantages in spatial and temporal resolution make the HJ-1B imageries to be an useful data source for monitoring water environment, as far as some related issues are resolved properly.