User Tools

Site Tools


disaggregation_of_yield_and_irrigation

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
disaggregation_of_yield_and_irrigation [2020/03/29 11:20]
matsz [Data preparation (disyield.gms)]
disaggregation_of_yield_and_irrigation [2020/03/29 11:22] (current)
matsz [Data preparation (disyield.gms)]
Line 164: Line 164:
  
 \begin{equation} \begin{equation}
-y_{h,p,y}= \sum_g \{f_{h,g} \cdot y_{g,​p,​y} ​/} \sum_g \{f_{h,g}\}+y_{h,p,y}= \sum_g \{ f_{h,g} \cdot y_{g,​p,​y} ​\} \sum_g \{ f_{h,g} \}
 \end{equation} \end{equation}
  
-\(y_{h,​p,​y}\) Yields simulated with PESETA [parameter, kg/ha] on PESETA grid //g// and for PESETA crop //p// under water limited and potential conditions \(y \in \{wyl,​relpy\}\). \\ +\(y_{h,​p,​y}\) Yields simulated with PESETA [parameter, kg/ha] on PESETA grid //g// and for PESETA crop //p// under water limited and potential conditions \(y \in \{wyl,​relpy\}\). \\ 
-\(f_{h,​g}\) Fraction of spatial unit //h// in PESETA grid //g// [parameter, dimensionless]. The sum of \(f_{h,​g}\) ​ over all spatial units //h// gives 1 unless a few occasions where spatial inaccuracies leave small shares of a spatial unit outside the land area covered by the PESETA grid.+\(f_{h,​g}\) Fraction of spatial unit //h// in PESETA grid //g// [parameter, dimensionless]. The sum of \(f_{h,​g}\) ​over all spatial units //h// gives 1 unless a few occasions where spatial inaccuracies leave small shares of a spatial unit outside the land area covered by the PESETA grid.
  
 (iv) Calculation of relative water limited yield per spatial unit (iv) Calculation of relative water limited yield per spatial unit
Line 176: Line 176:
 \end{equation} \end{equation}
  
-\(r_{h,​c}^{wly}\) Relative water limited yield [parameter, dimensionless] of PESETA crop //p// in spatial unit //h//.  +\(r_{h,​c}^{wly}\) ​= Relative water limited yield [parameter, dimensionless] of PESETA crop //p// in spatial unit //​h//​. ​\\ 
-\(y_{h,​p}^{wly}\) Water limited yield [parameter, kg/ha] of PESETA crop //p// in spatial unit //h// +\(y_{h,​p}^{wly}\) ​= Water limited yield [parameter, kg/ha] of PESETA crop //p// in spatial unit //h// \\ 
-\(\overline{y_{h,​p}^{wly}}\) Averge water limited yield [parameter, kg/ha] of PESETA crop //p// over all spatial units //h// in region //r//+\(\overline{y_{h,​p}^{wly}}\)  =Averge water limited yield [parameter, kg/ha] of PESETA crop //p// over all spatial units //h// in region //r//
  
 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. 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.
disaggregation_of_yield_and_irrigation.txt · Last modified: 2020/03/29 11:22 by matsz