thermosphere

1. Thermosphere: Heating, density increase, expansion at high latitude.: 热层：加热过程，密度增长，在高纬的扩张。

2. This is the biggest contraction of the thermosphere in at least 43 years.: 这是至少在43年中最大的热大气层收缩。

3. When solar activity is high, solar extreme ultraviolet rays warm and expand the thermosphere.: 当太阳活动剧烈时，太阳极端的紫外线会加热并使热大气层扩张。

4. Still, the collapse of the thermosphere was bigger than the sun's activity alone can explain.: 尽管如此，该热层塌陷是比太阳的活动可以解释的理由还要剧烈。

5. After the thermosphere is the thermopause, which is the outer most boundary of the thermosphere.: 热成层之后是热成层顶，它是热成层的最外边界。

6. The thermosphere, which blocks harmful ultraviolet rays, expands and contracts regularly due to the sun's activities.: 由于太阳的活动，阻挡有害紫外线的热大气层会定期扩张和收缩。

7. The thermosphere interacts strongly with the sun and hence is greatly influenced by the sun's solar activity, which occurs in cycles.: 强烈的热层与太阳交互作用，因此受较大的周期发生的太阳活动影响。

8. Above the stratosphere, blue layers mark the upper atmosphere (including the mesosphere, thermosphere, ionosphere, and exosphere) as it gradually fades into the blackness of outer space.: 在大气层上，蓝色的部分表示上层大气(包括中间层、热层、电离层、外逸层)，它们渐渐消逝到外空间的黑暗中。

9. When the atomic oxygen density in the mesosphere and lower thermosphere region is derived by means of photochemical model calculations from OH nightglow emissions, a retrieval uncertainty, I.: 借助OH夜气辉辐射的光化学模式，由OH夜气辉辐射反演中间层-低热层区域的原子氧数密度时，输入参数的不确定性将导致反演得到的原子氧数密度具有不确定性。

10. In the course of acoustic-gravity wave (AGW) propagation, a coupling relation between the ozone density oscillations (ODO) and temperature fluctuations (TF) in the lower thermosphere is presented.: 本文求出了声重波传播过程中，低热层臭氧含量振荡和温度场起伏间的耦合关系。

11. In the course of acoustic-gravity wave (AGW) propagation, a coupling relation between the ozone density oscillations (ODO) and temperature fluctuations (TF) in the lower thermosphere is presented.: 本文求出了声重波传播过程中，低热层臭氧含量振荡和温度场起伏间的耦合关系。

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