Shaodan CHEN, Liping ZHANG, Yanjun ZHANG, Mengyao GUO, Xin LIU. Evaluation of Tropical Rainfall Measuring Mission (TRMM) satellite precipitation products for drought monitoring over the middle and lower reaches of the Yangtze River Basin, China[J]. Journal of Geographical Sciences, 2020, 30(1): 53
- Journal of Geographical Sciences
- Vol. 30, Issue 1, 53 (2020)
Fig. 1. Location of the MLRYRB and distribution of meteorological stations
Fig. 2. SPI time series calculated from the TRMM 3B43 data (blue and red shaded bars) and station data (solid line) at different time scales: (a) 1 month; (b) 3 months; (c) 6 months; and (d) 12 months
Fig. 3. Correlation coefficients of the SPI values calculated with the TRMM 3B43 products and the weather station data
Fig. 4. Spatial distribution of the SPI value trends at the 3-month time scale in the MLRYRB
Fig. 5. Temporal variability in the SPI values and the drought events of different severity grades from 1998-2016
Fig. 6. Frequency of drought events and different drought levels (moderate drought, severe drought and extreme drought) based on the SPI values at the 3-month time scale in the MLRYRB from 1998 to 2016
Fig. 7. Temporal evolution based on the TRMM 3B43-derived SPI values for different drought conditions (moderate, severe and extreme) at different time scales (1, 3, 6 and 12 months)
Fig. 8. Spatial pattern of typical drought events based on the SPI values during the period of 1998-2016
Fig. 9. SPI time series calculated from the TRMM 3B43 data (blue and red shaded bars) and station data (solid line) based on the 56-year time series at different time scales
Fig. 10. Correlation coefficients for SPI values calculated with the TRMM 3B43 product and station data based on the 56-year time series
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Table 1.
Drought classification based on SPI values
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