Retrieval of Tv and Ts case studies based on ATSR data

After screening the dual view ATSR observations as described in the previous section, Tv and Ts are derived using the inversion method described in sections 3 and 4. Fig.6 gives the histograms of derived Tv and Ts for each subset. In the HEIFE area, the peak of Tv appears around 36°C, while there is no obvious peak for Ts which vary between 35-50°C. On the contrary, in the IMGRASS area, Ts has a peak around 46°C, Tv are scattered between 20-40°C. This can be explained by the different surface types and fractional vegetation cover in these two areas described above. Table 5 shows the comparison of surface temperature between field and ATSR observations for each area.

Figure 6. Vegetation and the soil temperature derived from ATSR for HEIFE and IMGRASS subset
Table S. Comparison between brightness (nadir and forward observations), vegetation and soil temperature from ATSR and the observed surface temperature in the field; the range indicated is ± q (standard deviation)_

Tv±ct(K)

Ts± a (K)

Tbo-N ± a (K)

TB0_F±a(K)

TB-obs (K)

HEIFE

306.2 ± 1.05

317.2 ±3.97

307.2 ±0.33

305.2 ± 0.37

305.7

IMGRASS

307.2 ±7.3

321.2 ±0.44

316.9 ± 0.45

315.1 ±0.74

311.3

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