Hello WRF-professors,
I downloaded MODIS land cover data (MCD12Q1_v06)for the entire region of China .
Only the top 17 categories of IGBP classification standard are included in the China region. I use Arcgis to classify them as 1-17.
Then, the categories of urban in the study area were replaced by UCM three categories, namely, low Intensity residential, high Intensity residential and Commercial, which were classified as 31-33 in Arcgis.
Run 'gdal_translate -of ENVI -co INTERLEAVE=BSQ ' to generate binary files and hdr files (attachments). I wrote the index according to the hrd file and modified GEOGRID.TBL and namelist.wps(attachments).
I replaced the third layer of nested land use data with my own data.
The geogrid.exe works fine, but after running it, when I looked at the variable LU_INDEX in geo_em.d03 with ncview, all types became 17. The Lu_index of other nested layers is normal.
Is this index file correct if you want to implement modis (including three urban categories) to replace the wrf underlying surface？
I found that my remote sensing image data (pixel depth 32bit) was normal, but the generated binary files were all NUL.
I successfully replaced the wrf underlying surface data with modis data (only one urban categories, pixel depth 8bit).
This is due to an index error or a pixel depth problem.
Hope to get help.
Thank you in advance.
I downloaded MODIS land cover data (MCD12Q1_v06)for the entire region of China .
Only the top 17 categories of IGBP classification standard are included in the China region. I use Arcgis to classify them as 1-17.
Then, the categories of urban in the study area were replaced by UCM three categories, namely, low Intensity residential, high Intensity residential and Commercial, which were classified as 31-33 in Arcgis.
Run 'gdal_translate -of ENVI -co INTERLEAVE=BSQ ' to generate binary files and hdr files (attachments). I wrote the index according to the hrd file and modified GEOGRID.TBL and namelist.wps(attachments).
I replaced the third layer of nested land use data with my own data.
The geogrid.exe works fine, but after running it, when I looked at the variable LU_INDEX in geo_em.d03 with ncview, all types became 17. The Lu_index of other nested layers is normal.
Is this index file correct if you want to implement modis (including three urban categories) to replace the wrf underlying surface？
I found that my remote sensing image data (pixel depth 32bit) was normal, but the generated binary files were all NUL.
I successfully replaced the wrf underlying surface data with modis data (only one urban categories, pixel depth 8bit).
This is due to an index error or a pixel depth problem.
Hope to get help.
Thank you in advance.
Attachments
Last edited: