Changes between Version 8 and Version 9 of DevelopmentActivities/subgrid
- Timestamp:
- 2016-02-19T10:38:14+01:00 (8 years ago)
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DevelopmentActivities/subgrid
v8 v9 1 1 = Description of the sub-grid representation = 2 2 3 The following open wiki document outlines proposed developments to the sechiba module that will allow for the separate representation of PFTs (or of groups of PFTs) within each grid square (link to [https://docs.google.com/document/d/12JEP2tDUaiSdNKKsVs3khUkz4WT4W5gUpUQSnaBv02I/edit sub-grid options in ORCHIDEE-CAN]). Please feel free to post thoughts and questions! 3 The following open wiki document outlines proposed developments to the sechiba module that will allow for the separate representation of PFTs (or of groups of PFTs) within each grid square . Please feel free to post thoughts and questions! 4 5 '''(link to [https://docs.google.com/document/d/12JEP2tDUaiSdNKKsVs3khUkz4WT4W5gUpUQSnaBv02I/edit sub-grid options in ORCHIDEE-CAN])''' 4 6 5 7 This developement is motivated in part by research regarding differences in modelled characteristics when the 'mosaic' approach is applied within grid cells. ([https://forge.ipsl.jussieu.fr/orchidee/attachment/wiki/DevelopmentActivities/subgrid/Li%2C%20Arora%20-%202012%20-%20Effect%20of%20mosaic%20representation%20of%20vegetation%20in%20land%20surface%20schemes%20on%20simulated%20energy%20and%20carbon%20balances.pdf Li & Arora, 2012]; [https://forge.ipsl.jussieu.fr/orchidee/attachment/wiki/DevelopmentActivities/subgrid/bg-11-1021-2014.pdf Melton & Arora, 2014]) found that although there were differences of only 5% between grid averaged heat fluxes between the mosaic approach and composite approach are compared, differences of 30-40% were observed for grid averaged NPP, LAI, soil Carbon and vegetagion biomass. For high within-cell heterogeneity, differences were much greater in both instances. The mosaic versus composite effect has yet to be tested in a model on a global scale.
