[1]WANG Lijuan,GUO Ni,YANG Yang.Surface Latent Heat Estimated by Remote Sensing Over the Tibetan Plateau[J].Research of Soil and Water Conservation,2017,24(03):119-124,129.
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Surface Latent Heat Estimated by Remote Sensing Over the Tibetan Plateau
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
24
Number of periods:
2017 03
Page number:
119-124,129
Column:
Public date:
2017-06-28
- Title:
- Surface Latent Heat Estimated by Remote Sensing Over the Tibetan Plateau
- Keywords:
- Tibetan Plateau; latent heat flux; MODIS products
- CLC:
- P407.4
- DOI:
- -
- Abstract:
- Based on the measured data of 9 sites over Tibetan Plateau in the summer of 2014, the characteristics of turbulent transport were analyzed first, and the further accuracy of the MOD16 latent heat flux was validated. Based on the Moderate-Resolution Imaging Spectroradiometer (MODIS) day and night land surface temperature data, the model was used to estimate the latent heat flux. Compared the estimated result with the measured data, the result showed that the main turbulent transport way was sensible heat flux in the Ali area where the underlying surface was barren or sparse, and the main turbulent transport way of other sites was latent heat flux. The applicability of the MOD16 product was difference in Tibetan Plateau regions, and the accuracy of MOD16 latent heat flux product was good in the eastern plateau, but it was not satisfied with the research in the other regions, and the valid data of western plateau was missing mostly. The model used in this paper was could not only make up for the data lack of western plateau, and could also improve the estimation precision of latent heat flux over the Tibetan Plateau. Compared to the measured data, the correlation of estimated data and observed value was significant, and the correlation coefficient was 0.77, and the root mean square was only 29.8 W/m2, and the mean absolute percent error was 35.59%. The regional distribution characteristic of latent heat flux was consisted with the surface cover types, so that the estimated result of model was reasonable over the Tibetan plateau.
- References:
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