Elle full - Revision history

Barbero: /* Obtain GFS and topographic data */

2022-08-05T20:19:47Z

Obtain GFS and topographic data

Barbero: /* Finished! */

2022-07-08T19:47:29Z

Finished!

Barbero: /* Sounding */

2022-07-08T18:39:43Z

Sounding

Barbero: /* Full elle tutorial */

2022-07-08T17:51:17Z

Full elle tutorial

Barbero: /* Sounding */

2022-07-08T17:47:33Z

Sounding

Barbero: /* RadxConvert */

2022-07-08T17:36:27Z

RadxConvert

Barbero: /* Sounding */

2022-07-08T17:29:49Z

Sounding

Barbero: /* Sounding */

2022-07-08T17:29:11Z

Sounding

Barbero: Undo revision 943 by Barbero (talk)

2022-07-08T17:04:55Z

Undo revision 943 by Barbero (talk)

Barbero: /* RadxBeamblock */

2022-07-08T17:04:38Z

RadxBeamblock

@@ Line 38: / Line 38: @@
 <li>Download the GFS analysis from [https://www.ncdc.noaa.gov/data-access/model-data/model-datasets/global-forcast-system-gfs NCEI]. Under 'Data on NCEI Servers,' select the HAS access option for the 0.5º domain of GFS Analysis (GFS-ANL). Since the tutorial includes two different files, select all UTC cycles and enter the start and end dates. Select the batch option and enter your email. Download the data when your order is ready and put it in a folder named gfs within the elle_full directory.</li></ol>
 <ol start="2" style="list-style-type: decimal;">
-<li>Download the topography data using the following command. ''Note: the folder is approximately 22 GB.'' If you know which region of the globe you need, you can poke around the website to determine which subfolder is necessary for your dataset. Unzip the contents and make note of the resulting directory.</li></ol>
+<li>Download the [https://lpdaac.usgs.gov/products/srtmgl3sv003/#tools SRTM topography data] using wget, curl, or manually downloading the files. A full example of how to download the data using wget is shown in the [http://wiki.lrose.net/index.php/RadxBeamBlock#Digital_elevation_model_data RadxBeamBlock documentation]. ''Note: the folder is approximately 22 GB.'' If you know which region of the globe you need, you can poke around the website to determine which subfolder is necessary for your dataset. Unzip the contents and make note of the resulting directory.</li></ol>
-  wget -r https://dds.cr.usgs.gov/srtm/version2_1/SRTM3/ *link has moved*
+  wget --user=$USERNAME --password=$PASSWORD https://e4ftl01.cr.usgs.gov/MEASURES/SRTMGL1.003/2000.02.11/N${lat}E${lon}.SRTMGL1.hgt.zip
 === '''Running Radx Applications''' ===

@@ Line 119: / Line 119: @@
 ==== '''Finished!''' ====
 <ol start="1" style="list-style-type: decimal;">
-<li>In the elle_full directory, you should now see 3 new directories: convert, rate, and qpe. You can look through the the files in those directories to inspect the new files and check the quality of the data.</li></ol>
+<li>In the elle_full directory, you should now see 3 new directories: convert, rate, and qpe. You can look through the the files in those directories to inspect the new files and check the quality of the data. A tutorial on how to add and view retrieve/calculated variables in HawkEye such as the RATE variables, PID, etc., can be found [http://wiki.lrose.net/index.php/HawkEye#Adding_variables_to_HawkEye_parameter_file here].</li></ol>
 === '''Run programs from a sample script''' ===

@@ Line 78: / Line 78: @@
 <li>In Grib2toMdv.gfs.taiwan, insert the projection parameters in lines 764-770. PROJ_LATLON is a fine choice and does not require the other parameters to be set.</li></ol>
 <ol start="3" style="list-style-type: decimal;">
-<li>In Grib2toMdv.gfs.taiwan, insert the desired output grid in lines 792-798.</li></ol>
+<li>In Grib2toMdv.gfs.taiwan, insert the desired output grid in lines 792-798. You will need to choose a grid that contains your area of interest as well as the radar(s) you are using.</li></ol>
   minx: initial longitude [-180 to 180]
   miny: initial latitude [-90 to 90]

← Older revision		Revision as of 17:51, 8 July 2022
Line 1:		Line 1:
	=== '''Full elle tutorial''' ===		=== '''Full elle tutorial''' ===

−	This workflow will convert raw radar files to the CfRadial format and estimate the surface rain rate, emphasizing some parameters that need to be defined for each application. This workflow assumes that soundings need to be estimated from GFS analysis data. Note, the current parameter files are currently optimized to work on Unix systems. It is also helpful to have the programs [https://formulae.brew.sh/formula/ncview ncview] and [https://formulae.brew.sh/formula/nco nco] to debug by plotting and dumping the contents of .nc files, which can be downloaded using [https://brew.sh/ Homebrew].	+	This workflow will convert raw radar files to the CfRadial format and estimate the surface rain rate, emphasizing some parameters that need to be defined for each application. This workflow assumes that soundings need to be estimated from GFS analysis data. Note, the current parameter files are currently optimized to work on Unix systems. It is also helpful to have the programs [https://formulae.brew.sh/formula/ncview ncview] and [https://formulae.brew.sh/formula/nco nco] to debug by plotting and dumping the contents of .nc files during intermediate steps, and which can be downloaded using [https://brew.sh/ Homebrew].

@@ Line 92: / Line 92: @@
   /path/to/Grib2toMdv -params ./params/Grib2toMdv.* -f ./gfs/*.grb2
   /path/to/Mdv2SoundingSpdb -params ./params/Mdv2SoundingSpdb.* -f ./gfs/mdv/$i/*.mdv
 ==== '''RadxRate''' ====

@@ Line 50: / Line 50: @@
 ==== '''RadxConvert''' ====
 <ol start="1" style="list-style-type: decimal;">
-<li>Convert the raw file to a CfRadial file. If you have data from more than one day, run the command in a for loop or simply run each day one at a time replacing $days with each date (YYYYMMDD).</li></ol>
+<li>Convert the raw file to a CfRadial file. If you have data from more than one day, run a for loop or run each day one at a time replacing $days with the date (YYYYMMDD).</li></ol>
   /path/to/RadxConvert -params ./params/RadxConvert.* -f $RAW/$RADAR_NAME/$days/*.raw*

@@ Line 85: / Line 85: @@
   dx: preferred longitude grid spacing
   dy: preferred latitude grid spacing
-Example: if minx=118, miny=20, nx=50, ny=50, dx=0.1, dy=0.1, The box will range from 118º to 123º E and 20º to 25º N.
+Example: if minx=118, miny=20, nx=50, ny=50, dx=0.1, dy=0.1, the grid will span from 118º to 123º E and 20º to 25º N.
 <ol start="3" style="list-style-type: decimal;">
 <li>In Mdv2SoundingSpdb.gfs, insert the radar's longitude, latitude, and elevation in lines 286-289.</li></ol>

@@ Line 66: / Line 66: @@
 <ol start="6" style="list-style-type: decimal;">
 <li>In the params folder, insert the range gate, azimuth, and elevation geometries in lines 263-306 of RadxBeamBlock.RCWF.new, respectively. The range gate and azimuth fields should match the observed spacing. If your elevation angles are unevenly spaced, it might be easier to artificially set the spacing to 0.25 or 0.5 degrees. The programs will interpolate the estimated blockage to the actual elevation angle later. The max elevation angle will depend on the radar location. Near Houston, TX, for example, only 2-3 degrees is probably sufficient, but a 10-20 degrees might be necessary near Taiwan.</li></ol>
-Note: for steps 4, 5, and 6, you can use RadxPrint on the raw or converted .nc radar file to view this information.
+ Note: for steps 4, 5, and 6, you can use RadxPrint on the raw or converted .nc radar file to view this information.
   RadxPrint -printVars -f /path/to/radar/file
 <ol start="7" style="list-style-type: decimal;">