VCD 2.3 Released notes
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1/ Changes in the VCD software
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* Possibility to output of:
	H2SO4(gas), H2SO4(liq), H20(liq) volumes mixing ratios
	H2SO4(gas) column density
* Remapping of some pre-existing extra variables keys due to the previously mentioned additions.
	The following variables are concerned:
	SO2, SO, OCS, O3, HCl, N2, He and electron volume mixing ratio
	SO2, SO, OCS, O3, HCl, N2, He column density
	Vertically integrated O2 nightglow
* Improvement of the EOF reconstruction of the variability