On the atmospheric dependence of the split-window equation for land surface temperature

摘要: Abstract A split-window equation is derived for land surface temperature, yielding T = T4 + A(T4 − T5) B(e), where the true and T5 are brightness temperatures measured in AVHRR channels 4 5, a coefficient related to atmospheric transmittances being dependent on atmosphere type independent emissivity, B(e) takes into account emissivity effect, which depends both channel emissivities (e4 e5) type. The dependence of coefficients, discussed by means satellite measurements simulations situ data. It shown that linear, global-scale algorithms can produce inaccurate estimates temperature when they applied areas reduced variability. simple, non-linear algorithm has been proposed, a0+ a1(T4− T5). constants a0and a1 have calculated from set ...