How to understand the problems facing remote sensing inversion of pavement temperature

How to understand the problems faced by remote sensing inversion of pavement temperature.

1, non-isothermal mixed pixels account for the vast majority of such pixels, the definition of the effective average temperature of the pixel is also more difficult, about this type of non-isothermal mixed pixel land surface temperature remote sensing problems need to be specifically discussed.

2. For the remote sensing of land surface temperature in pure pixels, since the specific radiance of the land surface target is obviously less than 1, the contribution and interference of the atmospheric downward radiation need to be considered.

3, the skin effect of land surface temperature land surface 30cm temperature contour, at a certain distance below the surface, the temperature tends to stabilize.