VCD 2.2 Released notes
======================

1/ Modifications in the Venus PCM simulations 
---------------------------------------------

* Implementation of online computation of photolysis rates
* Implementation of EUV dependenvy of photolysis rates
* Implementation of nitrogen photochemistry
	4 neutral species added : NO2 , NO, N, N(2D)
* Implementation of ionospheric chemistry
	15 Charged species added: CO2+, CO+, O+, O2+, H+, N2+, H2O+, OH+, C+, HCO+, H3O+, HCO2+, N+, NO+, e-
	Electron temperature based on the empirical model of Theis et al. 1984
* Tuning of small-scale non-orographic gravity wave parameterization
	EP_flux max : decreased from 0.005 to 0.001 kg.m-1.s-2
* Tuning of O production
	Factor applied to the rate of photolysis of CO2 into O(1D) and CO changed from 10 to 8


2/ Changes in the VCD software
------------------------------

* Scenarios
    The user now have two options (EUV_scena and albedo_scena) to select instead of one (scena)
    EUV_scena corresponds to the choice of E10.7: average, min, max, at a given julian date, given E10.7
    albedo_scena corresponds to the choice of cloud UV albedo: standard, min, max.
* Possibility to output of electron density


3/ VCD full version download
----------------------------

The initial download gives access to software, documentation and data for the standard albedo scenarios.
To get the other albedo (min and max) scenarios, add-on datasets need to be downloaded and put into the data directory.