昼间调整对卫星导出的低热层温度的影响
1Remote Sensing Systems, 438 First Street, Suite 200, Santa Rosa, CA 94501, USA.
概括
卫星测量显示热带变暖,而不是冷却,当对日间漂移进行校正时. 这种新的调整使得较低的热带层温度与表面和上层热带层的趋势保持一致.
科学领域:
- 气候科学是气候科学.
- 大气物理大气物理学
- 卫星遥感 卫星遥感 卫星遥感
背景情况:
- 卫星测量了下层热带层的十年温度趋势,从历史上看,热带地区相对于地表的降温.
- 卫星测量时间的日间偏移可以引入人工趋势,需要精确的日间校正.
研究的目的:
- 导出和应用一个改进的日间校正卫星导出的热带地区较低的热带层温度.
- 为了使卫星温度趋势与地表和其他大气层温度数据相协调.
主要方法:
- 根据卫星微波测量,为热带地区推导出新的日间校正系数.
- 应用新的校正来计算下层热带层十年级温度变化.
- 校正的卫星温度趋势与地表和中/上热层温度数据的比较.
主要成果:
- 热带地区的衍生日间校正与以前使用的校正符号相反.
- 应用新的校正揭示了热带下层热带层的显著变暖.
- 经过校正的卫星温度趋势与表面温度升温和卫星衍生的中/上热层温度趋势一致.
结论:
- 以前对热带下热带层温度趋势的基于卫星的评估可能因未经纠正的日间效应而受到偏差.
- 修订后的日间调整提供了更准确的热带变暖表现,与其他气候指标保持一致.
- 准确的日间校正对于可靠地解释来自卫星的气候趋势至关重要.
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