Radical chemistry at night: comparisons between observed and modelled HO_x, NO₃ and N₂O₅ during the RONOCO project

The interest has been driven by the success of advanced data assimilation methods in numerical weather prediction (Rabier, 2005), as well as by development of operational

transport model and a minimum variance Bayesian inverse method was used to estimate annual emission rates using the measurements, with a priori estimates from the Emis- sions

The framework is based on a mass balance ap- proach and given that for Europe most of the components have been independently estimated, di ff erent accounting schemes may be used

To evaluate which emissions database describes butanes and pentanes most re- alistically, an additional simulation (denoted “E2”) was per- formed, using the butanes and

In addition to continuous measurement of the laser power throughout the field exper- iments, the instrument’s Raman scattering sensitivity was measured nightly by over- flowing

All other long- lived forcing terms reflect the steady state response of the atmosphere to sustained aircraft NO x emissions of the year 2000, based on methane lifetime changes due

(2002), which showed that, although the range of mixing ratios at the South Pole in summer were con- siderably higher than observed at Halley during the winter (< 5 to 54 pptv for

Another impact of non-acyl peroxy nitrates is that they are a possible positive inter- ference to in-situ NO 2 measurements in the upper troposphere because the non-acyl peroxy