在卫星测量中增强了中度的热层变暖
Qiang Fu1, Celeste M Johanson, John M Wallace
1Department of Atmospheric Sciences, University of Washington, Seattle, WA 98195, USA. qfu@atmos.washington.edu
Science (New York, N.Y.)
|May 27, 2006
概括
卫星数据显示,从1979年到2005年,中度地区的热层变暖和平流层冷却有所增强. 这种模式表明热带循环扩大,喷流向极移动.
科学领域:
- 大气科学 大气科学
- 气候科学 气候科学
- 遥感 遥感 遥感 遥感
背景情况:
- 了解热层和平流层的长期温度趋势对于气候变化研究至关重要.
- 卫星观测提供了大气变化的全球视角.
研究的目的:
- 分析1979年至2005年间热层和平流层温度趋势的空间分布.
- 识别表明大气循环变化的模式.
主要方法:
- 利用来自卫星传输微波探测单元 (MSU) 的辐射数据.
- 应用先进的检索算法来处理MSU数据.
- 分析了27年 (1979-2005) 的温度趋势.
主要成果:
- 在两个半球的15至45度度带中观察到增强的热层变暖和平流层冷却.
- 确定了一个与日益扩大的热带循环相一致的空间模式.
- 检测到热带气体喷流和相关的亚热带干旱区的极端转移.
结论:
- 观察到的温度趋势的空间模式是27年卫星记录的一个强有力的特征.
- 这些发现提供了大气循环模式显著变化的证据.
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