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| DOI | 10.1029/2020GL089339 |
| Oscillations in Neutral Winds Observed by GOCE | |
| Dhadly M.S.; Emmert J.T.; Jones M.; Jr.; Doornbos E.; Zawdie K.A.; Drob D.P.; Conde M.G. | |
| 发表日期 | 2020 |
| ISSN | 0094-8276 |
| 卷号 | 47期号:17 |
| 英文摘要 | This study explores intra-annual oscillations (IAOs) in upper thermospheric winds using GOCE cross-track wind measurements between 70°S and 70°N. Due to the Sun-synchronous dawn-dusk orbit of GOCE, the cross-contamination between seasonality and local time variations in winds is minimal, which makes it a unique space-based data set to extract IAOs and study their latitudinal variation. Our analysis reveals that the annual (AO), semiannual (SAO), and terannual (TAO) oscillations are robust features in thermospheric winds. The AO is strongest at middle latitudes; SAO and TAO amplitudes increase with increasing latitude. The latitudinally averaged amplitudes of the AO, SAO, and TAO for dusk/dawn are 30.0/35.0, 8.5/11.3, and 6.0/6.6 m/s, respectively. The phase of AO reverses around the equator. SAO and TAO phases vary with latitude but do not reverse like the AO. For both the SAO and TAO, the average phase at dusk and dawn differs by ∼30 days. ©2020. American Geophysical Union. All Rights Reserved. |
| 英文关键词 | Contamination; Cross contamination; Cross track; Latitudinal variation; Neutral winds; Seasonality; Space-based; Thermospheric winds; Wind measurement; Wind; annual variation; GOCE; latitudinal gradient; observational method; oscillation; seasonality; thermosphere |
| 语种 | 英语 |
| 来源期刊 | Geophysical Research Letters
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/169795 |
| 作者单位 | Space Science Division, Naval Research Laboratory, Washington, DC, United States; Royal Netherlands Meteorological Institute – KNMI, De Bilt, Netherlands; Geophysical Institute, University of Alaska Fairbanks, Fairbanks, AK, United States |
| 推荐引用方式 GB/T 7714 | Dhadly M.S.,Emmert J.T.,Jones M.,et al. Oscillations in Neutral Winds Observed by GOCE[J],2020,47(17). |
| APA | Dhadly M.S..,Emmert J.T..,Jones M..,Jr..,Doornbos E..,...&Conde M.G..(2020).Oscillations in Neutral Winds Observed by GOCE.Geophysical Research Letters,47(17). |
| MLA | Dhadly M.S.,et al."Oscillations in Neutral Winds Observed by GOCE".Geophysical Research Letters 47.17(2020). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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