Title :
Drought monitoring from the remotely sensed temperature and vegetation index in China
Author :
Xin, Jingfeng ; Tian, Guoliang ; Liu, Qinhuo ; Chen, Liangfu ; Xin, Xiaozhou
Author_Institution :
Inst. of Remote Sensing Applications, Chinese Acad. of Sci., Beijing, China
Abstract :
In this paper, temperature/vegetation index relation is used to evaluate soil moisture conditions by 8 km, 10-day composite AVHRR data set. To define the T/NDVI slope, window size and automatic linear fit are studied. Then T/NDVI slope is analyzed spatially and temporally. Results show that soil moisture is closely correlated to the T/NDVI slope. A new approach is proposed to estimate soil moisture availability by T/NDVI slope and T/NDVI space. Finally, soil moisture and drought distribution maps are produced in China.
Keywords :
atmospheric temperature; hydrology; remote sensing; soil; vegetation mapping; NDVI slope; T/NDVI slope; automatic linear fit; composite AVHRR data set; drought distribution map; drought monitoring; remotely sensed temperature; soil moisture; temperature index; vegetation index; window size; Clouds; Land surface temperature; Meteorology; Moisture measurement; Remote monitoring; Soil moisture; Spatial resolution; Temperature distribution; Temperature sensors; Vegetation mapping;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2003. IGARSS '03. Proceedings. 2003 IEEE International
Print_ISBN :
0-7803-7929-2
DOI :
10.1109/IGARSS.2003.1293785
