Sensitivity of equatorial mesopause temperatures to the 27-day solar cycle
| dc.contributor.author | Von Savigny, C. | |
| dc.contributor.author | Eichmann, K.-U. | |
| dc.contributor.author | Robert, C.E. | |
| dc.contributor.author | Burrows, J.P. | |
| dc.contributor.author | Weber, M. | |
| dc.date | 2012 | |
| dc.date.accessioned | 2016-03-29T10:07:35Z | |
| dc.date.available | 2016-03-29T10:07:35Z | |
| dc.identifier.uri | https://orfeo.belnet.be/handle/internal/2965 | |
| dc.description | Night-time observations of OH(3–1) rotational temperatures with SCIAMACHY (SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY) on Envisat are used to study the sensitivity of equatorial mesopause temperatures to the 27-day solar forcing. Fourier and cross-correlation analysis are first used to demonstrate the presence of a solar-driven 27-day cycle in OH rotational temperatures. The temperature sensitivity to solar forcing is quantitatively evaluated based on a superposed epoch analysis that also demonstrates that the solar signal in the OH temperature time series is significant at the 99.9 % confidence level. The most remarkable result is that the temperature sensitivity to solar forcing in terms of the 27-day solar cycle (βF10.7= 2.46 (±0.93) K/(100 sfu)) agrees within uncertainties with the majority of published sensitivity values in terms of the 11-year solar cycle. This implies that the same underlying physical mechanism drives the mesopause temperature response to solar variability at both the 27-day and the 11-year time scale. | |
| dc.language | eng | |
| dc.title | Sensitivity of equatorial mesopause temperatures to the 27-day solar cycle | |
| dc.type | Article | |
| dc.subject.frascati | Physical sciences | |
| dc.audience | Scientific | |
| dc.source.title | Geophysical Research Letters | |
| dc.source.volume | 39 | |
| dc.source.issue | 21 | |
| dc.source.page | L21804 | |
| Orfeo.peerreviewed | Yes | |
| dc.identifier.doi | 10.1029/2012GL053563 | |
| dc.identifier.scopus | 2-s2.0-84868613787 |
