Building Tables Of Aerosol Optical Properties - Revision history

Martin.turbet at 09:46, 15 April 2024

2024-04-15T09:46:26Z

Martin.turbet at 09:42, 15 April 2024

2024-04-15T09:42:27Z

Martin.turbet: /* Run the Mie code */

2024-02-26T08:46:09Z

‎Run the Mie code

Martin.turbet: /* Mie code */

2024-02-26T08:45:09Z

‎Mie code

Martin.turbet: /* Mie code */

2024-02-26T08:44:57Z

‎Mie code

Martin.turbet: /* Mie code */

2024-02-26T08:44:45Z

‎Mie code

Martin.turbet at 08:44, 26 February 2024

2024-02-26T08:44:20Z

Martin.turbet: /* Mie code */

2024-02-21T15:11:49Z

‎Mie code

Martin.turbet at 09:21, 21 February 2024

2024-02-21T09:21:39Z

Martin.turbet at 09:16, 21 February 2024

2024-02-21T09:16:14Z

@@ Line 18: / Line 18: @@
 * Once you have the optical indices for your aerosol, divide the values into two separate files, one for the visible wavelengths and one for the infrared wavelengths.
 * In the Mie code, nsize is the number of bins used to integrate Qext, omega, and g over the particle radius. Usually 1E4 is a good number. You can try to increase this number to see if it changes the results, and if it does, keep increasing it until you reach constant and consistent results.
-* rmin and rmax are the minimum and maximum particle radii used for the integration. In this case, 1.E-10 and 1E-4 usually work because the reference radius is often around 1.E-6 (this may change depending on your aerosol).
+* rmin and rmax are the minimum and maximum particle radii (in meter) used for the integration. In this case, 1.E-10 and 1E-4 usually work because the reference radius is often around 1.E-6 (this may change depending on your aerosol).
 * Nsun is the number of wavelengths in the input file optind_*.dat. So you will run the Mie code twice, once to create the properties for the visible spectrum, once to make the properties for the infrared part of the spectrum.”
 * Save these as different files with names like “optprop_aerosolnamevis_n20.dat”, where n## indicates how many radii you used in the Mie code (only to help you remember).
 * Put these files in your datagcm/aerosol_properties/ directory.

← Older revision		Revision as of 09:42, 15 April 2024
Line 9:		Line 9:
	=== Run the Mie code ===		=== Run the Mie code ===

−	Once you have the optical indices for your aerosol, you will need to use the 'optpropgen' Mie code (developed by Jean-Baptiste Madeleine and Franck Montmessin). ~~For the moment (this will be updated), the~~ code is available here: https://~~gitlab~~.~~obspm~~.fr/~~Exoplanet-Atmospheres-LESIA~~/~~exorem~~/~~-/tree/master~~/~~src~~/~~fortran~~/~~optpropgen?ref_type=heads~~	+	Once you have the optical indices for your aerosol, you will need to use the 'optpropgen' Mie code (developed by Jean-Baptiste Madeleine and Franck Montmessin).
		+
		+	The code is available on the SVN here: https://svn.lmd.jussieu.fr/Planeto/trunk/LMDZ.GENERIC/utilities/aerosols_utilities/

← Older revision		Revision as of 08:46, 26 February 2024
Line 9:		Line 9:
	=== Run the Mie code ===		=== Run the Mie code ===

−	Once you have the optical indices for your aerosol, you will need to use the 'optpropgen' Mie code (developed by Jean-Baptiste Madeleine and Franck Montmessin). For the moment (this will be updated), the code is available here:	+	Once you have the optical indices for your aerosol, you will need to use the 'optpropgen' Mie code (developed by Jean-Baptiste Madeleine and Franck Montmessin). For the moment (this will be updated), the code is available here: https://gitlab.obspm.fr/Exoplanet-Atmospheres-LESIA/exorem/-/tree/master/src/fortran/optpropgen?ref_type=heads

@@ Line 7: / Line 7: @@
 You will end up with a table with the real and imaginary parts of the optical constants according to wavelength. If they are not there, you will have to dig into the literature. There are also several “Handbooks of Optical Constants”.
-=== Mie code ===
+=== Run the Mie code ===
 Once you have the optical indices for your aerosol, you will need to use the 'optpropgen' Mie code (developed by Jean-Baptiste Madeleine and Franck Montmessin). For the moment (this will be updated), the code is available here:

@@ Line 14: / Line 14: @@
 Several advices taken from the original user manual (by Laura Kerber):
-* once you have the optical indices for your aerosol, divide the values into two separate files, one for the visible wavelengths and one for the infrared wavelengths.
+* Once you have the optical indices for your aerosol, divide the values into two separate files, one for the visible wavelengths and one for the infrared wavelengths.
 * In the Mie code, nsize is the number of bins used to integrate Qext, omega, and g over the particle radius. Usually 1E4 is a good number. You can try to increase this number to see if it changes the results, and if it does, keep increasing it until you reach constant and consistent results.
 * rmin and rmax are the minimum and maximum particle radii used for the integration. In this case, 1.E-10 and 1E-4 usually work because the reference radius is often around 1.E-6 (this may change depending on your aerosol).

@@ Line 9: / Line 9: @@
 === Mie code ===
-SO FAR THIS PART IS JUST A COPY-PASTE
+Once you have the optical indices for your aerosol, you will need to use the 'optpropgen' Mie code (developed by Jean-Baptiste Madeleine and Franck Montmessin). For the moment (this will be updated), the code is available here:
-. Once you have the optical indices for your aerosol, divide the values into two separate files, one for the visible wavelengths and one for the infrared wavelengths. Run them through the Mie code.
-If you have never used the Mie code before, read this advice from J.B. Madeleine:
+Several advices taken from the original user manual (by Laura Kerber):
-“In the Mie code, nsize is the number of bins used to integrate Qext, omega, and g over the particle radius. Usually 1E4 is a good number. You can try to increase this number to see if it changes the results, and if it does, keep increasing it until you reach constant and consistent results. Rmin and rmax are the minimum and maximum particle radius used for the integration. In this case, 1.E-10 and 1E-4 usually work because the reference radius is often around 1.E-6 (this may change depending on your aerosol). Nsun is the number of wavelengths in the input file optind_*.dat. So you will run the Mie code twice, once to create the properties for the visible spectrum, once to make the properties for the infrared part of the spectrum.”
-Save these as different files with names like “optprop_aerosolnamevis_n20.dat”, where n## indicates how many radii you used in the Mie code (only to help you remember). Put these files in datagcm.
+- once you have the optical indices for your aerosol, divide the values into two separate files, one for the visible wavelengths and one for the infrared wavelengths.

← Older revision		Revision as of 15:11, 21 February 2024
Line 8:		Line 8:

	=== Mie code ===		=== Mie code ===
		+
		+	SO FAR THIS PART IS JUST A COPY-PASTE

	2. Once you have the optical indices for your aerosol, divide the values into two separate files, one for the visible wavelengths and one for the infrared wavelengths. Run them through the Mie code.		2. Once you have the optical indices for your aerosol, divide the values into two separate files, one for the visible wavelengths and one for the infrared wavelengths. Run them through the Mie code.