The gases.def Input File - Revision history

Emillour at 08:42, 30 April 2025

2025-04-30T08:42:43Z

2023-03-20T16:11:04Z

2023-03-09T10:22:58Z

2022-11-11T17:00:19Z

2022-05-11T09:20:33Z

2022-05-11T07:51:15Z

2022-05-11T07:49:53Z

2022-05-11T07:46:04Z

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 A typical ''gases.def'' file for the Earth case:
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 * The second line must contain the number of gases (here 3) accounted for
 * Then come the gas names (always 3 characters!), one per line. Here '''N2_''', '''CO2''' and '''H2O'''
-* Followed by the gas mixing ratios, if the gas concentration is assumed to be constant, or '''-1''' if it is variable. In the example given above ''N2'' and ''CO2'' will be taken as having constant mixing ratios of respectively ''0.9996119'' and ''0.375999962E-03'', whereas ''H2O'' will be variable.
+* Followed by the gas volume mixing ratios (mol/mol_of_atm), if the gas concentration is assumed to be constant, or '''-1''' if it is variable. In the example given above ''N2'' and ''CO2'' will be taken as having "constant" mixing ratios of respectively ''0.9996119'' and ''0.375999962E-03'', whereas ''H2O'' will be variable. By "constant" is mean the proportion wrt to 1.0 (the normalized amount of the sum of all tracers) i.e. in the example above, since 0.9996119+0.375999962E-03=0.999987899962 these exact values are for when the volume mixing ratio of H2O is 1.21e-5 mol/mol.

← Older revision		Revision as of 10:22, 9 March 2023
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	== Technical aspects ==		== Technical aspects ==
	In the code this file is read by the ''su_gases'' routine, which handles only preset possibilities (gas names).		In the code this file is read by the ''su_gases'' routine, which handles only preset possibilities (gas names).
		+
		+	[[Category:Inputs]]
		+
		+	[[Category:Generic-Model]]
		+	[[Category:Mars-Model]]
		+	[[Category:Venus-Model]]
		+	[[Category:Titan-Model]]

@@ Line 1: / Line 1: @@
-A typical gases.def file for the Earth case:
+A typical ''gases.def'' file for the Earth case:
 <pre>
 # gases
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 </pre>
-'''Note''': Lines beginning with a hashtag are not read
+* Note that the first line of the file is actually not read
 == Technical aspects ==
-In the code this file is read by ....
+In the code this file is read by the ''su_gases'' routine, which handles only preset possibilities (gas names).

@@ Line 18: / Line 18: @@
 </pre>
 == Technical aspects ==
 In the code this file is read by ....

← Older revision		Revision as of 07:51, 11 May 2022
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	# mixing ratio -1 means the gas is variable.		# mixing ratio -1 means the gas is variable.
	</pre>		</pre>
		+
		+
		+
		+	== Technical aspects ==
		+	In the code this file is read by ....

← Older revision		Revision as of 07:49, 11 May 2022
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−	~~???~~	+
		+	A typical gases.def file for the Earth case:
		+	<pre>
		+	# gases
		+	3
		+	N2_
		+	CO2
		+	H2O
		+	0.999611900E+00
		+	0.375999962E-03
		+	-1
		+
		+
		+	# First line is number of gases
		+	# Followed by gas names (always 3 characters)
		+	# and then mixing ratios.
		+	# mixing ratio -1 means the gas is variable.
		+	</pre>