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Please use this identifier to cite or link to this item:
http://hdl.handle.net/2014/40381
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| Title: | Observation of night OH in the mesosphere |
| Authors: | Pickett, H. M.
Read, W. G.
Lee, K. K.
Yung, Y. L. |
| Keywords: | photochemical properties
airglow
hydroxyl
chemical kinetics
middle atmosphere
Microwave Limb Sounder (MLS) |
| Issue Date: | 6-Oct-2006 |
| Publisher: | American Geophysical Union |
| Citation: | Geophysical Research Letters, Vol. 33, L19808, doi:10.1029/2006GL026910, 2006 |
| Abstract: | Satellite measurements from the Aura MLS instrument show a layer of OH near 82 km in the night. This layer confirms earlier measurements by ground-based LIDAR. The MLS and LIDAR observations measure OH in the lowest vibrational state and are distinct, but related chemically, from vibrationally-excited emission from the OH Meinel bands in the near infrared. The Caltech 1-D model has been extended to include vibrational dependence of OH reactions and shows good agreement with MLS OH data and with observations of the Meinel bands. The model shows a chemical lifetime of HOx that increases from less than a day at 80 km to over a month at 87 km. Above this altitude transport processes become an important part of HOx chemistry. The model predicts that ground state OH represents 99% of the total OH up to 84 km. |
| URI: | http://hdl.handle.net/2014/40381 |
| Appears in Collections: | JPL TRS 1992+
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