Intercomparison of NO 2  photolysis frequency measurements by actinic flux spectroradiometry and chemical actinometry during JCOM97 | Zendy

Kraus Alexander | Zendy; Rohrer Franz | Zendy; Hofzumahaus Andreas | Zendy

Premium

Intercomparison of NO 2 photolysis frequency measurements by actinic flux spectroradiometry and chemical actinometry during JCOM97

Author(s) -

Kraus Alexander,

Rohrer Franz,

Hofzumahaus Andreas

Publication year - 2000

Publication title -

geophysical research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.007

H-Index - 273

eISSN - 1944-8007

pISSN - 0094-8276

DOI - 10.1029/1999gl011163

Subject(s) - actinometer , photodissociation , flux (metallurgy) , linear regression , absorption spectroscopy , environmental science , physics , analytical chemistry (journal) , atmospheric sciences , chemistry , optics , plasma , mathematics , nuclear physics , photochemistry , statistics , environmental chemistry , organic chemistry

A first intercomparison of J NO 2 measurements by actinic flux spectroradiometry (SR) and chemical actinometry (CA) was performed in summer 1997 in Jülich, Germany. During this experiment (JCOM97) a large set of data was collected with a time resolution of ∼ 1 min, showing a high linear correlation (R = 0.998) in J NO 2 . Linear regression indicates a good absolute agreement with the CA being 6% higher than SR if the quantum yield recommended by NASA/JPL (1997) and recently published data of the NO 2 absorption spectrum (σ NO 2 ) is used for the evaluation of the SR‐data. The influence of using previously published σ NO 2 data is discussed. Overall the comparison suggests that J NO 2 can be measured by either CA or SR with an accuracy of better than 10%.

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here

Accelerating Research