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- Jeffrey M. Forbes
- Department of Aerospace Engineering Sciences University of Colorado Boulder Colorado USA
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- Sean L. Bruinsma
- Department of Terrestrial and Planetary Geodesy Centre Nationale D'Etudes Spatiales Toulouse France
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- Xiaoli Zhang
- Department of Aerospace Engineering Sciences University of Colorado Boulder Colorado USA
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- Jens Oberheide
- Physics Department University of Wuppertal Wuppertal Germany
書誌事項
- 公開日
- 2009-08-07
- 権利情報
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- http://onlinelibrary.wiley.com/termsAndConditions#vor
- DOI
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- 10.1029/2009gl038748
- 公開者
- American Geophysical Union (AGU)
この論文をさがす
説明
<jats:p>Using densities measured by accelerometers on the CHAMP and GRACE satellites, and taking advantage of the local time precession characteristics of these near‐polar orbiting satellites, exosphere temperatures are derived as a function of local time, longitude and latitude. Significant longitude variability (e.g., ±25K maximum to minimum over the equator) in geomagnetically‐quiet exosphere temperatures is shown to exist, and is attributed to a spectrum of diurnal and semidiurnal thermal tides that are excited in the troposphere and strongly influenced by the global land‐sea distribution. Since exosphere temperatures are independent of height, this discovery constitutes evidence that exosphere variability is linked to surface variability. Recent evidence suggests that analogous effects exist at Mars.</jats:p>
収録刊行物
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- Geophysical Research Letters
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Geophysical Research Letters 36 (15), L15812-, 2009-08-07
American Geophysical Union (AGU)
