Sensitivity studies of the recent new data on O(1D) quantum yields in O3 Hartley band photolysis in the stratosphere
Item
Title (Dublin Core)
Sensitivity studies of the recent new data on O(1D) quantum yields in O3 Hartley band photolysis in the stratosphere
Description (Dublin Core)
The production yields of excited oxygen O(<sup>1</sup><i>D</i>) atoms from the near ultraviolet O<sub>3</sub> photolysis are essential quantities for atmospheric chemistry calculations because of its importance as major sources of hydroxyl (OH) radicals and nitric oxide (NO). Recently, new O(<sup>1</sup><i>D</i>) quantum yields from O<sub>3</sub> photolysis between 230 and 305 nm in the Hartley band region were reported, which are almost independent of the photolysis wavelength (0.88-0.93) and smaller than NASA/JPL-2000 recommendations (0.95 between 240 and 300 nm). In order to assess consequences of the new data of O(<sup>1</sup><i>D</i>) quantum yields on the stratospheric chemistry, the changes in stratospheric chemical partitioning and O<sub>3</sub> concentration are examined using a one-dimensional atmospheric model. Our steady state model simulations for 40° N in March indicate that the smaller O(<sup>1</sup><i>D</i>) quantum yields result in increases of stratospheric O<sub>3</sub> (up to ~2% in the upper stratosphere), which are attributed to the changes in HO<sub>x</sub>, NO<sub>x</sub>, and ClO<sub>x</sub> abundance and their catalyzed O<sub>3</sub> loss rates.
Creator (Dublin Core)
Taniguchi, N.
Hayashida, S.
Takahashi, K.
Matsumi, Y.
Date (Dublin Core)
2018-06-28
Type (Dublin Core)
Text
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
10.5194/acp-3-1293-2003
https://acp.copernicus.org/articles/3/1293/2003/
Source (Dublin Core)
eISSN: 1680-7324
Language (Dublin Core)
eng
