Long-term trend of mesospheric temperatures over Kiruna (68°N, 21°E) during 2003–2014
| Autor: | Yong Ha Kim, Jeong-Han Kim, Young Sun Lee, Gawon Kim |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Atmospheric Science
010504 meteorology & atmospheric sciences Fourier transform spectrometers Airglow Rotational temperature Sudden stratospheric warming Seasonality medicine.disease Atmospheric sciences 01 natural sciences Microwave Limb Sounder Geophysics Long term trend Space and Planetary Science 0103 physical sciences medicine Environmental science Satellite 010303 astronomy & astrophysics 0105 earth and related environmental sciences |
| Zdroj: | Journal of Atmospheric and Solar-Terrestrial Physics. 161:83-87 |
| ISSN: | 1364-6826 |
| DOI: | 10.1016/j.jastp.2017.06.018 |
| Popis: | We have analyzed mesospheric temperatures from OH airglow measurements with a Fourier Transform Spectrometer (FTS) in the period of 2003–2014 at Kiruna (68°N, 21°E). We have derived the seasonal variation, solar response and long-term variation of mesospheric temperatures over Kiruna. In addition, FTS temperatures show signals of sudden stratospheric warming (SSW). After removing the estimated solar response of 5.0 ± 1.5 K/100SFU, we find the long-term trend of −2.6 ± 1.5 K/decade, indicating a weak cooling trend at the high latitude. We discuss our results by comparing with those of Microwave Limb Sounder (MLS) instrument on board Aura satellite. |
| Databáze: | OpenAIRE |
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