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Significant changes have occurred in permafrost and seasonally frozen soils in the Tibetan Plateau (TP) during the last few decades, with potential influence on regional climate, hydrological and ecosystem processes. Land surface temperature (LST) is closely associated with surface energy balance, thus is a critical parameter affecting the frozen soil thermodynamics. Satellite remote sensing provides...
For some strong earthquakes, thermal anomaly occurs before the event, however not definitely. In this study, time series of MODIS Land Surface Temperature (LST) products have been processed and analyzed to locate possible anomalous variations prior to the Lushan (20 April 2013) earthquakes. In order to exclude the seasonal or annual effects from the LST variations, also to avoid the rainy and cloudy...
A new soil moisture retrieval algorithm developed in this paper, using C- and K-band microwave radiometer channels of Ocean Salinity Satellite (OSS). In this new algorithm, K-band(23.8GHz) brightness temperature (BT) is used to estimate land surface temperature, and C-band BT in H polarization used to retrieve soil moisture by τ – ω model, in which soil roughness (h) and vegetation parameters (τ)...
Ambient irradiance is pivotal to be considered for field measurements of soil emissivity with Portable Fourier Transform Infrared Spectro-radiometer (102F). Usually, a diffusely reflecting gold plate which has a near-Lambertian behavior was used to acquire the ambient irradiance. Because of the measurements of soil and ambient irradiance are not synchronized, It can generate errors on determination...
Regional surface air temperature is a significant indicator to research the climate and monitor the environment. In order to estimate surface air temperature in regional scale by remote sensing observations, the study based on the improved advection-energy balance for the surface air temperature (ADEBAT) model to acquire surface air temperature in North China. Results showed that the improved ADEBAT...
Although many challenges exist, validation of the satellite land surface temperature (LST) product over heterogeneous surface can provide new and in-depth understandings of the product. Lessons learned from the validation are important to improve the satellite LST product. In order to better understand the relationship between LSTs measured through different approaches and instruments and test the...
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