Improvements to the accuracy of measurements of NO2 by zenith-sky visible spectrometers. II: Errors in zero using a more complete chemical model
Roscoe, H.K.; Charlton, A.J.; Fish, D.J.; Hill, J.G.T.. 2001 Improvements to the accuracy of measurements of NO2 by zenith-sky visible spectrometers. II: Errors in zero using a more complete chemical model. Journal of Quantitative Spectroscopy and Radiative Transfer, 68 (3). 337-349. 10.1016/S0022-4073(00)00058-3Full text not available from this repository.
Using a flexible chemical box model with full heterogeneous chemistry, intercepts of chemically modified Langley plots have been computed for the 5 years of zenith-sky NO2 data from Faraday in Antarctica (65°S). By using these intercepts as the effective amount in the reference spectrum, drifts in zero of total vertical NO2 were much reduced. The error in zero of total NO2 is plus/minus 0.03 x 10 15 from one year to another. This error is small enough to determine trends in midsummer and any variability in denoxification between midwinters. The technique also suggests a more sensitive method for determining N2O5 from zenith-sky NO2 data.
|Programmes:||BAS Programmes > Other Special Projects|
|NORA Subject Terms:||Chemistry|
|Date made live:||08 Nov 2012 11:07|
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