Luis.munoz.pabon en 14:14 19 ene 2024

2024-01-19T14:14:40Z

← Revisión anterior		Revisión del 14:14 19 ene 2024
Línea 1:		Línea 1:
	= Description =		= Description =

	==== Local Climate Zones (LCZs) ====		==== Local Climate Zones (LCZs) ====

Luis.munoz.pabon en 14:14 19 ene 2024

2024-01-19T14:14:22Z

← Revisión anterior		Revisión del 14:14 19 ene 2024
Línea 1:		Línea 1:
	= Description =		= Description =

			==== Local Climate Zones (LCZs) ====

			The LCZ classification scheme describes and characterizes the surface structure and surface cover of cities in 17 types of zones for urban studies in weather simulations (more information at: [https://journals.ametsoc.org/view/journals/bams/93/12/bams-d-11-00019.1.xml LCZs (Stewart & Oke, 2012]). To use the LCZ data there are two options.

			===== Using geogrid directly from WPS v4.5 =====

			The release of [https://github.com/wrf-model/WRF/releases WRF v4.5] included a new geogrid table, <code>GEOGRID.TBL.ARW_LCZ</code>, that includes an entry for a global 100-m LCZ dataset. The WPS Geographical Input Data Mandatory for Specific Applications is already dowloaded in hydra in the same <code>geog_data_path</code> defined before.

			<B>NOTE:</B> If you are not using hydra, you can dowload the data directly from the following link: [https://www2.mmm.ucar.edu/wrf/src/wps_files/cglc_modis_lcz_global.tar.gz CGLC-MODIS-LCZ_100m].
			Once the data is downloaded and placed into the <code>geog</code> folder, untar the file and it is ready for use.

			* Go to the <code>geogrid</code> folder created before and copy the <code>GEOGRID.TBL.ARW_LCZ</code>.
			<pre style="shell">
			$ cd $WORKDIR/WPS/geogrid
			$ cp $WRFversion/WPS/geogrid/GEOGRID.TBL.ARW_LCZ ./GEOGRID.TBL
			</pre>

			* Run <code>geogrid.exe</code> and you are ready to use the data.
			<B>NOTE:</B> The use of LCZ data require the addition and change of some parameters in the WRF namelist, these changes will be descibed in real section.
			<pre style="shell">
			$ cp /share/WRF/launch_geogrid_intel.pbs ./
			$ qsub launch_geogrid_intel.pbs
			</pre>

			===== Using w2w =====

			If you are not using <code>WRF v4.5</code> or higher, or you want to use data from the World Urban Dataset and Access Portal Tools [https://www.wudapt.org/ WUDAPT]. There is an additional step you need to follow after running <code>geogrid.exe</code> without linking the <code>GEOGRID.TBL.ARW_LCZ</code>. [https://github.com/matthiasdemuzere/w2w w2w] is a python tool to force the LCZ categorization into the geogrid resulting file. To compile w2w you need two input files, the geogrid resulting file <code>geo_em.d[nn].nc</code> and the LCZ Global Map from WUDAPT.

			The LCZ Global Map covers the globe with 100m resolution and it is published in the open-access data through the following [https://zenodo.org/record/6364594 link] in TIFF format.
			<B>NOTE:</B> The size of the file may cause some problems when running w2w, so it is recommended to crop the file around your study area before using w2w tool.

			* Install the w2w tool:
			<pre style="shell">
			$ pip install git+https://github.com/matthiasdemuzere/w2w
			</pre>

			* Run w2w with the input files detailed above.
			<B>NOTE:</B> Both the LCZ file and the geo_em file must be in the same <code>input_directory</code>
			<pre style="shell">
			$ w2w input_directory LCZ_cropped_file.tif geo_em.d[nn].nc
			</pre>

			* w2w creates four files saving the original <code>geo_em.dXX.nc</code> file:
			** geo_em.d[nn].nc: Original geo_em file
			** geo_em.d[nn]_NoUrban.nc: Urban areas are replaced with the dominant surrounding rural land use.
			** geo_em.d[nn]_LCZ_extent.nc: The extension of urban areas is updated using LCZ.
			** geo_em.d[nn]_LCZ_params.nc: Urban areas are described using LCZ categories.


			<B>NOTE:</B> To run <code>metgrid.exe</code> using the <code>geo_em.dXX_LCZ_params.nc</code> file, you have to change the file name to the name of the original file, and continue with the following steps.

Luis.munoz.pabon: Página creada con «= Description =»

2024-01-19T14:12:55Z

Página creada con «= Description =»

Página nueva

= Description =

WRF-URBAN - Historial de revisiones

Luis.munoz.pabon en 14:14 19 ene 2024

Luis.munoz.pabon en 14:14 19 ene 2024

Luis.munoz.pabon: Página creada con «= Description =»