Drought Monitoring Using the Sentinel-3-Based Multiyear Vegetation Temperature Condition Index in the Guanzhong Plain, China
| Autor: | Kevin Tansey, Pengxin Wang, Lei Wang, Hongmei Li, Xijia Zhou, Shuyu Zhang, Darren Ghent |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Atmospheric Science
010504 meteorology & atmospheric sciences moderate resolution imaging spectroradiometer (MODIS) 0208 environmental biotechnology Geophysics. Cosmic physics 02 engineering and technology 01 natural sciences Normalized Difference Vegetation Index Condition index Precipitation Computers in Earth Sciences TC1501-1800 0105 earth and related environmental sciences Remote sensing Radiometer QC801-809 Drought monitoring Vegetation 020801 environmental engineering Ocean engineering Correlation analysis High temporal resolution Environmental science Moderate-resolution imaging spectroradiometer Sentinel-3 vegetation temperature condition index (VTCI) |
| Zdroj: | IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 13, Pp 129-142 (2020) |
| ISSN: | 2151-1535 |
| Popis: | The vegetation temperature condition index (VTCI) has been shown to perform well for drought monitoring using multiyear advanced very high-resolution radiometer (AVHRR) and moderate resolution imaging spectroradiometer (MODIS) data. Compared to single-year VTCI, the VTCI calculated by multiyear data can quantitatively reflect the degree of drought and precipitation in a region. Sentinel-3 is a recently launched remote sensing satellite with high temporal resolution and is similar to the satellites carrying AVHRR and MODIS sensors. One year of Sentinel-3 data is available for calculating the VTCI, and given the need for developing quantitatively drought monitoring capabilities, the aim of this study is to investigate the methods used to calculate the potential multiyear Sentinel-3 VTCI for quantitative drought monitoring. This is based on a comparison with multiyear Terra MODIS VTCI and a correlation analysis with cumulative precipitation data. The analysis results indicate that the potential multiyear Sentinel-3 VTCI can be accurately calculated from the single-year Sentinel-3 VTCI based on the linear correlation between the single-year VTCI and multiyear VTCI derived from Terra MODIS, which do not exhibit obvious systematic deviations from the multiyear Terra MODIS VTCI (the absolute value of the average bias 2 = 0.731, P |
| Databáze: | OpenAIRE |
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