How to use own raw data to create surface data

[jgx]

Hi everyone, According to the CLM5.0 user's guide, If I want to create my own surface data, I need to first generate a SCRIPgrids based on the raw data, then use mkmapdata.sh to generate corresponding map files, and finally use mkserfdata_map generate surface daataset. What I want to know is, if I want to use my raw satellite image data, how can I generate my own SCRIPgrids and map files? Is there a namelist file that records the raw data information?
Sincerely seeking help

 

[oleson]

The answer here probably depends on what type of satellite image data you are wanting to use. Is it pft or lai data or something else? If it is pft or lai data then maybe the CLM landuse tool is appropriate:

THESIS - CLM Land Use

Tool used to generate a transient land use and land cover change input data file for use by CLM5 in CESM2 simulations

www2.cesm.ucar.edu

You might contact the author directly about that: lawrence @ ucar.edu.

If it's something different then maybe just following the format of the existing raw data would work. There should be an example namelist of the raw input datasets in tools/mksurfdata_map/ called mksurfdata_map.namelist. So for example the lake raw data is:
mksrf_flakwat = '/glade/p/cesm/cseg/inputdata/lnd/clm2/rawdata/mksrf_LakePnDepth_3x3min_simyr2004_csplk_c151015.nc'
and the mapping file is:
map_flakwat = '/glade/p/cesm/cseg/inputdata/lnd/clm2/mappingdata/maps/10x15/map_3x3min_MODIS-wCsp_to_10x15_nomask_aave_da_c160425.nc'

This a 10x15 grid example, but there are mapping files at various resolutions available.

 

[erik]

This is land specific so I'm moving to that forum.

 

[jgx]

The answer here probably depends on what type of satellite image data you are wanting to use. Is it pft or lai data or something else? If it is pft or lai data then maybe the CLM landuse tool is appropriate:

THESIS - CLM Land Use

Tool used to generate a transient land use and land cover change input data file for use by CLM5 in CESM2 simulations

www2.cesm.ucar.edu

You might contact the author directly about that: lawrence @ ucar.edu.

If it's something different then maybe just following the format of the existing raw data would work. There should be an example namelist of the raw input datasets in tools/mksurfdata_map/ called mksurfdata_map.namelist. So for example the lake raw data is:
mksrf_flakwat = '/glade/p/cesm/cseg/inputdata/lnd/clm2/rawdata/mksrf_LakePnDepth_3x3min_simyr2004_csplk_c151015.nc'
and the mapping file is:
map_flakwat = '/glade/p/cesm/cseg/inputdata/lnd/clm2/mappingdata/maps/10x15/map_3x3min_MODIS-wCsp_to_10x15_nomask_aave_da_c160425.nc'

This a 10x15 grid example, but there are mapping files at various resolutions available.

Thank you very much for your answer, it has been very helpful to me

 

[jgx]

Okay, I will move to another forum, thanks a lot

This is land specific so I'm moving to that forum.

 

[garitransfer]

Hello! If you want to use your satellite image data with CLM5.0, you'll need to follow a few steps. First, generate SCRIPgrids based on your raw data. Then, use the mkmapdata.sh script to create the necessary map files. When dealing with raw satellite image data, there isn't a specific namelist file that records this information directly.

To incorporate your satellite data, ensure it's formatted appropriately for SCRIPgrid generation. Utilize tools or scripts that can convert your raw satellite data into the required SCRIPgrid format. Once you've generated SCRIPgrids, proceed with mkmapdata.sh to create map files.

Remember, adapting to your specific dataset might involve scripting or additional preprocessing. Check the CLM5.0 user's guide for any updates or specifics related to your satellite data integration. If you encounter challenges, community forums or support channels related to CLM5.0 can provide valuable insights. Best of luck with your data integration!