 |
| Titel |
Stratospheric and mesospheric HO2 observations from the Aura Microwave Limb Sounder |
| VerfasserIn |
L. Millán, S. Wang, N. Livesey, D. Kinnison, H. Sagawa, Y. Kasai |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1680-7316
|
| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 15, no. 5 ; Nr. 15, no. 5 (2015-03-13), S.2889-2902 |
| Datensatznummer |
250119521
|
| Publikation (Nr.) |
 copernicus.org/acp-15-2889-2015.pdf |
|
|
|
|
|
| Zusammenfassung |
| This study introduces stratospheric and mesospheric hydroperoxyl radical
(HO2) estimates from the Aura Microwave Limb Sounder (MLS) using an
offline retrieval (i.e. run separately from the standard MLS algorithm). This
new data set provides two daily zonal averages, one during daytime from 10 to
0.0032 hPa (using day-minus-night differences between 10 and 1 hPa to
ameliorate systematic biases) and one during nighttime from 1 to 0.0032 hPa.
The vertical resolution of this new data set varies from about 4 km at
10 hPa to around 14 km at 0.0032 hPa. A description of the methodology
and an error analysis are presented. Comparisons against the Whole Atmosphere
Community Climate Model (WACCM), the Superconducting Submillimeter-Wave
Limb-Emission Sounder (SMILES) and the Far Infrared Spectrometer (FIRS-2)
measurements, as well as photochemical simulations, demonstrate the
robustness of the retrieval and indicate that the retrieval is sensitive
enough to detect mesospheric HO2 layers during both day and night. This
new data set is the first long-term HO2 stratospheric and mesospheric
satellite record and it provides needed constraints to help resolve the O3
deficit problem and the "HOx dilemma". |
| |
|
| Teil von |
|
|
|
|
|
|
|
|