disaggregation_of_yield_and_irrigation
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disaggregation_of_yield_and_irrigation [2020/03/29 07:54] – [Downscaling of other CAPRI regional data] matsz | disaggregation_of_yield_and_irrigation [2020/03/29 08:22] – [Data preparation (disyield.gms)] matsz | ||
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Line 126: | Line 126: | ||
\begin{equation} | \begin{equation} | ||
+ | f_r^{irri, | ||
+ | \end{equation} | ||
+ | \begin{equation} | ||
+ | f_r^{irri, | ||
\end{equation} | \end{equation} | ||
+ | |||
+ | \begin{equation} | ||
+ | \hat{f_h^{irri}}= f_h^{irri, | ||
\end{equation} | \end{equation} | ||
+ | |||
+ | ===Calculation of relative irrigation shares=== | ||
+ | |||
+ | Priors for the relative irrigation shares per crop are obtained from the weighted average of crop-specific irrigation shares | ||
+ | |||
+ | \begin{equation} | ||
+ | \hat{r_{r, | ||
+ | \end{equation} | ||
+ | |||
+ | ===Relative water limited yields and relative potential to water limited yields=== | ||
+ | |||
+ | The calculation of relative yields is done with various steps: | ||
+ | |||
+ | (i) Ensuring complete data set covering all PESETA grids in the region and all PESETA crops by filling eventual data ‘gaps’ with the average water limited and potential yield for all PESETA crops available in the region | ||
+ | |||
+ | (ii) Calculation of the relative potential – to – water limited yield | ||
+ | |||
+ | \begin{equation} | ||
+ | y_{g, | ||
+ | \end{equation} | ||
+ | |||
+ | \(y_{g, | ||
+ | \(y_{g, | ||
+ | \(y_{g, | ||
+ | |||
+ | (iii) Mapping from PESETA grids to spatial units. | ||
+ | |||
+ | \begin{equation} | ||
+ | y_{h,p,y}= \sum_g \{ f_{h,g} \cdot y_{g,p,y} \} \sum_g \{ f_{h,g} \} | ||
+ | \end{equation} | ||
+ | |||
+ | \(y_{h, | ||
+ | \(f_{h, | ||
+ | |||
+ | (iv) Calculation of relative water limited yield per spatial unit | ||
+ | |||
+ | \begin{equation} | ||
+ | r_{h, | ||
+ | \end{equation} | ||
+ | |||
+ | \(r_{h, | ||
+ | \(y_{h, | ||
+ | \(\overline{y_{h, | ||
+ | |||
+ | If the water limited yield for a PESETA crop is missing for a spatial unit, but available in other spatial units in the same region, the area-weighted water limited yield for the PESETA crop over the region is assigned to the spatial unit. | ||
+ | |||
+ | (v) Mapping from PESETA crop //p// to CAPRI crop //c// | ||
+ | |||
+ | In a final step, PESETA crops are mapped to CAPRI crops. | ||
+ | |||
+ | Data for CAPRI crops without corresponding PESETA crop are assigned the values of the crop which is assumed to be most similar as defined in the set mmarsyieldgroups(*, | ||
+ |
disaggregation_of_yield_and_irrigation.txt · Last modified: 2022/11/07 10:23 by 127.0.0.1