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Article

Estimation of land surface evapotranspiration using the METRIC model in Nepal

利用METRIC模型估算尼泊尔地表蒸散发量

, &
Pages 509-517 | Received 03 Apr 2020, Accepted 07 May 2020, Published online: 12 Oct 2020

Figures & data

Figure 1. Study area with the locations of the EC stations considered for our ET calculations. The color map shows the elevation distribution. We considered a region extending fully from north to south across the whole of Nepal so that the full extent of the possible elevation distribution would be included

Figure 1. Study area with the locations of the EC stations considered for our ET calculations. The color map shows the elevation distribution. We considered a region extending fully from north to south across the whole of Nepal so that the full extent of the possible elevation distribution would be included

Table 1. Paths, rows, and dates of satellite overpass of Landsat-8 for our study area. Two Landsat-8 tiles cover the whole study area that we considered. We considered six different days to capture possible seasonal variations in our analysis

Table 2. Locations of the EC flux tower site measurements of the two different stations

Table 3. METRIC-derived intermediate products for the months of March, April, May, June, October, and November 2016

Figure 2. METRIC-derived ET at the time of satellite overpass for 15 March 2016 (upper left), 16 April 2016 (upper right), 18 May 2016 (middle left), 3 June 2016 (middle right), 25 October 2016 (lower left), and 10 November 2016 (lower right)

Figure 2. METRIC-derived ET at the time of satellite overpass for 15 March 2016 (upper left), 16 April 2016 (upper right), 18 May 2016 (middle left), 3 June 2016 (middle right), 25 October 2016 (lower left), and 10 November 2016 (lower right)

Figure 3. ET estimated from the METRIC model in comparison to the ET from the flux tower from Simara across different months

Figure 3. ET estimated from the METRIC model in comparison to the ET from the flux tower from Simara across different months

Figure 4. Variation of ET, Ts, and NDVI with elevation for 15 March 2016 (upper left), 16 April 2016 (upper right), 18 May 2016 (middle left), 3 June 2016 (middle right), 25 October 2016 (lower left), and 10 November 2016 (lower right)

Figure 4. Variation of ET, Ts, and NDVI with elevation for 15 March 2016 (upper left), 16 April 2016 (upper right), 18 May 2016 (middle left), 3 June 2016 (middle right), 25 October 2016 (lower left), and 10 November 2016 (lower right)