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SEMANTIC AND PRAGMATIC

Ecoinvent v3.1 water balance in SimaPro

I did a bit statistical analysis of water balance in ecoinvent cut-off 3.1 version in SimaPro. What's shown is the difference between water emitted to air and "W-R", a.k.a. 

[water emitted to air ( consumption)  /  (water withdrawal- water release) - 1] *100% 

It looks like water difference of ~7000 (out of 13000, >50%) processes are within 10% (+/-), another 6000 processes have much bigger difference. I suspect this might be caused by the following two factors: 
 
1. Properties: Water embodied in mass properties ( e.g irrigation water, tap water, wastewater, etc) 
 
2. Boundary:  Issue related to boundary of water flows accounting, i.e. should salt water , turbined water being considered into the water balance
 
If boundary is okay, it suggests water in mass properties have to be carefully considered in order to do a proper water balance accounting. 
 
How do you think? If you'd like to comment, pls send an email to me :  xun.liao@epfl.ch 
 
P.S. I'm in disucssion with ecoinvent to figure out what's the best way to calculate water consumption. Stay tuned. 
Posted by Xun Liao at 19:57
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GHG emissions due to direct land use change per crop per country

Dataset name:  GHG emissions due to direct land use by crop by country   (click to download; format: excel ".xlsx") 

Meta information: 

Version direct-land-use-change-assessment-tool-(version-2014-1-21-january-2014).xlsx.zip
Download Link: http://blonkconsultants.nl/en/tools/land-use-change-tool.html
   
Approach Excel Data Table
   
Scenario considered Weighted
   
   
Deliverables GHG emissions (kg / kg of product) 
   
Potential usage Corporate footprint and corporate reporting, such as CDP
   
Potential limitation

Omission of peat drainage that could be significant for southeast aisan countries, such as Indonesia and Malaysia, etc. 

FAO data might not be as reliable as satelite data provide by Hansen et al (2013, Science). Suggest to do a sense check using WRI global forest watch map based on data from Hansen et al.

  Hansen, M. C., P. V. Potapov, R. Moore, M. Hancher, S. A. Turubanova, A. Tyukavina, D. Thau, S. V. Stehman, S. J. Goetz, T. R. Loveland, A. Kommareddy, A. Egorov, L. Chini, C. O. Justice, and J. R. G. Townshend. 2013. “High-Resolution Global Maps of 21st-Century Forest Cover Change.” Science 342 (15 November): 850–53.
  http://www.globalforestwatch.org/
   
Time 01/11/15
Author Xun Liao
If questions, contact me  xun.liao@quantis-intl.com
  xun.liao@epfl.ch

 

Posted by Xun Liao at 18:05
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