010022009074@ouc_edu_cn
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Hi!I am studying on LGM simulated by CESM1.0.4 using NCAR paleo toolkit and the topography data is from ICE-5G.1st, For CAM : Since there are three variables: surface altitude,thickness of the ice sheet and ice-mask in ICE-5G, I wonder if I need to add variable "thickness of the ice sheet" to variable "surface altitude" as the total topography data which will be read in "cami_create_cesm.csh" to make atmosphere's initial field? In addtion, I am using CESM1.0.4. In land model, is it necessary for me to modify fortran code to make variables TOPO_BEDROCK and TOPO_ICE different in "mksrf_topo_paleo.nc" considering that there is thickness of the ice sheet (land ice) in LGM since there are annotations (below) in "paleo_mkraw_ccsm4.F90"? And what is the meaning of " glacier multiple elevation class"?Wating for your answer. Thanks Taily ZhangAnnotations in "paleo_mkraw_ccsm4.F90"============================================================! read topo from topo_depth file! add code to specify ice sheet if so desired! if you wish to read in a seperaete ice sheet topofile, ! you will need to modify the code.............. topo_ice = topoin topo_bedrock = topoin............... =========================================================== Below is the attribute of the data in ICE-5G float orog(lat, long) ; orog:comment = "ICE-5G: version = 1.2 - time = 21 KBP" ; orog:long_name = "Surface Altitude" ; orog:standard_name = "surface_altitude" ; orog:units = "m" ;float sftgit(lat, long) ; sftgit:comment = "ICE-5G: version = 1.2 - time = 21 KBP" ; sftgit:long_name = "Thickness of the Ice Sheet" ; sftgit:standard_name = "land_ice_thickness" ; sftgit:units = "m" ;float sftgif(lat, long) ; sftgif:comment = "ICE-5G: version = 1.2 - time = 21 KBP" ; sftgif:long_name = "Ice-mask" ; sftgif:standard_name = "Ice-mask" ; sftgif:units = "%" ;