Changes between Version 8 and Version 9 of Documentation/Ancillary


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Timestamp:
03/22/21 18:13:09 (8 months ago)
Author:
aducharne
Comment:

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  • Documentation/Ancillary

    v8 v9  
    6060 
    6161===== Dynamic maps =====  
    62 The PFT map based on Olson categories has been combined with some historical trends and future projections datasets of Land-Use changes. This work has been carried out by Nathalie de Noblet within the frame of the AR5 IPCC exercise. The historical dataset is the HYDE 3.0 dataset (Klein Goldewijk) and the future projections are delivered by the four Integrated assessments models for the four Representative Concentration Pathways (RCP): MESSAGE (RCP 8.5), AIM (RCP 6), MiniCAM (RCP 4.5), IMAGE (RCP 3.0). A report and a presentation on the methodology developped have been written by Nathalie. Both documents are availabe [ 
     62The PFT map based on Olson categories has been combined with some historical trends and future projections datasets of Land-Use changes. This work has been carried out by Nathalie de Noblet within the frame of the AR5 IPCC exercise. The historical dataset is the HYDE 3.0 dataset (Klein Goldewijk) and the future projections are delivered by the four Integrated assessments models for the four Representative Concentration Pathways (RCP): MESSAGE (RCP 8.5), AIM (RCP 6), MiniCAM (RCP 4.5), IMAGE (RCP 3.0). A report and a presentation on the methodology developped have been written by Nathalie. Both documents are available [ 
    6363 
    6464==== 1.2.2 Maps based on recent Satellite Land Cover products ==== 
     
    7272==== 1.2.4 Future projections based on RCP's ==== 
    7373 
    74 == 2. Soil texture and color data == 
     74== 2. Soil texture and other soil properties == 
    7575 
    76 Two soil maps are available on the shared accounts and compatible with ORCHIDEE: 
     76Two soil maps are available on the shared accounts and compatible with all versions of ORCHIDEE : 
    7777- soils_param.nc: '''Zobler map''' at 1° resolution, with 7 soil texture classes reduced in ORCHIDEE into three texture classes (coarse, medium, fine) 
    7878- soils_param_usda.nc: '''Reynolds map''', at 5 arc-min resolution (1/12°), with 12 USDA texture classes directly usable in ORCHIDEE 
    7979More details in http://forge.ipsl.jussieu.fr/orchidee/raw-attachment/wiki/Documentation/UserGuide/eqs_hydrol.pdf, section "6. Soil Texture". 
     80 
     81In branch 2.2, we've introduced the possibility to describe the soil properties with other maps : 
     82- soil texture of SoilGrids, converted from the 1km SoilGrids maps of %sand,silt,clay to the 12 USDA classes, and upscaled at two resolutions : soils_param_SoilGrids_5km.nc and soils_param_SoilGrids_halfdeg.nc 
     83- modified Reynolds soil texture map: the clay texture (nsc=12) is split in two classes, the swelling Clays which keep the class index 12 and the corersponding soil parameters, and the non-swelling Clays (Oxisols), corresponding to a new soil class 13, with new soil hard-coded parameters, (cf the [https://tel.archives-ouvertes.fr/tel-03110807/document PhD thesis of Salma Tafasca, 2020], chapter 4). 
     84- soil parameters (Ks, porosity, residual moisture content, Van Genuchten n and alpha), using KEYWORD SPMIPEXP = exp1 
     85 
     86  
     87 
    8088 
    8189== 3. Irrigation and Floodplains ==