Actinometric measurements of NO₂ photolysis frequencies in the atmosphere simulation chamber SAPHIR

(a) The simulated cumulative atmosphere–land CO 2 flux ( F e L ) from the Climate + CO 2 simulation in comparison with other terrestrial vegetation model estimates and the

mixing ratios calculated from the chamber volume and the known amount of HCHO injected into the chamber; measurements were also compared between the di ff erent instruments.. The

made observations during two recent aircraft campaigns: the Deep Convective Clouds and Chemistry (DC-3) and the Studies of Emissions and Atmospheric Composition, Clouds, 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

While the ra- tios HCHO PTR − MS /HCHO calc and HCHO AL4021 /HCHO calc remained constant throughout levels A and B (Fig. 2, mid- dle), 4% lower ratios were observed for PTR-MS at

Systematic differences between the measurements by MPI-LIF and the other two instruments are also observed in the darkness during other SAPHIR experiments, but absolute deviations

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

The aim was to assess the suitability of the instrument for long-term monitoring of the main reactive nitrogen species under predominantly free tropospheric air conditions..