Radx2Grid - Revision history

Bdolan: /* Scientific Background */

2021-04-12T20:45:42Z

Scientific Background

Jcdehart at 00:06, 24 February 2021

2021-02-24T00:06:49Z

Jcdehart at 23:46, 23 February 2021

2021-02-23T23:46:32Z

Jcdehart: /* Overview */

2021-02-22T20:22:38Z

Overview

Jcdehart: /* Overview */

2021-02-08T20:21:09Z

Overview

Jcdehart: /* Overview */

2021-02-08T20:20:53Z

Overview

Jcdehart at 20:20, 8 February 2021

2021-02-08T20:20:23Z

Tingyucha at 15:32, 2 February 2021

2021-02-02T15:32:40Z

Tingyucha at 15:31, 2 February 2021

2021-02-02T15:31:44Z

Tingyucha: /* Overview */

2021-02-02T15:31:11Z

Overview

← Older revision		Revision as of 20:45, 12 April 2021
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	For more information about controlling the output in Radx2Grid, please refer to [http://wiki.lrose.net/index.php/Radx2Grid_Controlling_Output this page].		For more information about controlling the output in Radx2Grid, please refer to [http://wiki.lrose.net/index.php/Radx2Grid_Controlling_Output this page].

		+	For more information about gridding methods (bilinear interpolation vs. spatial filtering), please refer to [http://wiki.lrose.net/index.php/Radx2Grid_Gridding_Options this page].

	=== '''Supported regular grids''' ===		=== '''Supported regular grids''' ===

@@ Line 17: / Line 17: @@
 For more information about controlling the output in Radx2Grid, please refer to [http://wiki.lrose.net/index.php/Radx2Grid_Controlling_Output this page].
 === '''Supported regular grids''' ===
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 * PPI grid in (EL, Y, Z) - performs Cartesian transformation on each elevation angle separately
 * Polar grid, regular in (EL, AZ, RANGE)
 === '''Running Radx2Grid''' ===

@@ Line 13: / Line 13: @@
-''For more information about the convective stratiform separation algorithm in Radx2Grid, please refer to [http://wiki.lrose.net/index.php/Radx2Grid_Convective_Stratiform this page].''
+=== '''Scientific Background''' ===
-''For more information about controlling the output in Radx2Grid, please refer to [http://wiki.lrose.net/index.php/Radx2Grid_Controlling_Output this page].''
+For more information about controlling the output in Radx2Grid, please refer to [http://wiki.lrose.net/index.php/Radx2Grid_Controlling_Output this page].
 === '''Supported regular grids''' ===

← Older revision		Revision as of 20:22, 22 February 2021
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	''For more information about the convective stratiform separation algorithm in Radx2Grid, please refer to [http://wiki.lrose.net/index.php/Radx2Grid_Convective_Stratiform this page].''		''For more information about the convective stratiform separation algorithm in Radx2Grid, please refer to [http://wiki.lrose.net/index.php/Radx2Grid_Convective_Stratiform this page].''
		+
		+	''For more information about controlling the output in Radx2Grid, please refer to [http://wiki.lrose.net/index.php/Radx2Grid_Controlling_Output this page].''

	=== '''Supported regular grids''' ===		=== '''Supported regular grids''' ===

← Older revision		Revision as of 20:21, 8 February 2021
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	<br />Radx2Grid uses a SPRINT-style interpolation that is suitable for ground-based radars and vertically pointing airborne lidar and radar data. It is a well-established interpolation method that was designed to have minimal impact for subsequent analysis. More details on the interpolation method can be found in the original user's guide for [https://wiki.ucar.edu/download/attachments/41487211/sprint.99feb_doc.pdf SPRINT], and will be added to this documentation in the near future.<br />		<br />Radx2Grid uses a SPRINT-style interpolation that is suitable for ground-based radars and vertically pointing airborne lidar and radar data. It is a well-established interpolation method that was designed to have minimal impact for subsequent analysis. More details on the interpolation method can be found in the original user's guide for [https://wiki.ucar.edu/download/attachments/41487211/sprint.99feb_doc.pdf SPRINT], and will be added to this documentation in the near future.<br />
		+

	<blockquote style="color: grey; border: solid thin gray;">		<blockquote style="color: grey; border: solid thin gray;">

@@ Line 6: / Line 6: @@
 <br />Radx2Grid uses a SPRINT-style interpolation that is suitable for ground-based radars and vertically pointing airborne lidar and radar data. It is a well-established interpolation method that was designed to have minimal impact for subsequent analysis. More details on the interpolation method can be found in the original user's guide for [https://wiki.ucar.edu/download/attachments/41487211/sprint.99feb_doc.pdf SPRINT], and will be added to this documentation in the near future.<br />
 <blockquote style="color: grey; border: solid thin gray;">
 '''Important Note:''' Due to the more complex geometry of airborne scanning radars such as ELDORA and the NOAA P-3 tail radar the current interpolation method is not appropriate and Radx2Grid will not work properly. [http://wiki.lrose.net/index.php/FRACTL FRACTL (Fast Reorder and CEDRIC Technique in LROSE)] will do both gridding and multi-Doppler synthesis for airborne radars.
 </blockquote>
 === '''Supported regular grids''' ===

← Older revision		Revision as of 20:20, 8 February 2021
Line 7:		Line 7:
	<br />Radx2Grid uses a SPRINT-style interpolation that is suitable for ground-based radars and vertically pointing airborne lidar and radar data. It is a well-established interpolation method that was designed to have minimal impact for subsequent analysis. More details on the interpolation method can be found in the original user's guide for [https://wiki.ucar.edu/download/attachments/41487211/sprint.99feb_doc.pdf SPRINT], and will be added to this documentation in the near future.<br />		<br />Radx2Grid uses a SPRINT-style interpolation that is suitable for ground-based radars and vertically pointing airborne lidar and radar data. It is a well-established interpolation method that was designed to have minimal impact for subsequent analysis. More details on the interpolation method can be found in the original user's guide for [https://wiki.ucar.edu/download/attachments/41487211/sprint.99feb_doc.pdf SPRINT], and will be added to this documentation in the near future.<br />

		+	For more information about the convective stratiform separation algorithm in Radx2Grid, please refer to [http://wiki.lrose.net/index.php/Radx2Grid_Convective_Stratiform this page].

	<blockquote style="color: grey; border: solid thin gray;">		<blockquote style="color: grey; border: solid thin gray;">

@@ Line 33: / Line 33: @@
 Recall that during the RadxConvert step the CfRadial files can be created as an aggregation of sweep files that make up a single volume scan. Assuming that option was invoked (which is the default for NEXRAD Level II files) you should now have a Cartesian gridded volume in NetCDF format in the 'grid' subdirectory to use for further analysis. Note that if you first convert data to DORADE sweep files for editing in soloii, and then convert to CfRadial you must explicitly aggregate the sweeps during that conversion. A common source of confusion is that only a single sweep is gridded into the volume if the CfRadial file only contains a single sweep.
-== The Radx2Grid Parameter file ==
+==== The Radx2Grid Parameter file ====
 * Radx2Grid is a large application with many parameters available for controlling its operation. This makes the use of the parameter file confusing to a new user. Therefore, the parameters are separated into sections. The more common sections are at the top of the file, and the less common parameters lower down in the file.

@@ Line 1: / Line 1: @@
 Radx2Grid performs coordinate transformations for ground-based radars from a spherical grid on which radar data is collected to a regular grid.
-= Overview =
+=== '''Overview''' ===
 All of the LROSE tools presented so far (RadxPrint, RadxConvert, and HawkEye) work directly on lidar or radar data in its native coordinate system. For many workflows it is desirable to put the data onto a regular grid for scientific analysis. The workflow steps to this point have not modified data, but gridding can be considered the first '''analysis''' step in that scientific decisions have to be made about how to project the data from spherical coordinates to a regular grid. Note that quality control tools (which also involve scientific decision making) will be added in the next update, which can be applied either before or after gridding.