CEDAR: Improved Continuing Lidar Observation and Geophysical Study of the Mesopause Region

CEDAR：改进中层顶区域的持续激光雷达观测和地球物理研究

• 批准号: 9714676
• 负责人: Chiao-Yao She
• 金额: $ 36万
• 依托单位: Colorado State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-01-01 至 2001-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9714676&HistoricalAwards=false
• 关键词: CEDAR; Improved; Continuing; Lidar; Observation

The investigators continue their observations of temperature and sodium density in the mesopause region with a wind/temperature lidar. They are improving the lidar's accuracy and robustness with a daytime and wind capability, with enough data in three years to reveal seasonal variations of the data. In addition to exploring climatology and trends, this long data set reveals information on variability from climatological mean, tidal and gravity waves, heat flux, horizontal winds, and temperature-sodium density correlation. Continually collected, analyzed data can provide interesting results with the lidar. For instance, plotting monthly mean temperatures at each altitude over seven years, investigators observed a 3-4 year warming trend (peaking in 1993), believed to be the first evidence of Pinatubo impacting the atmosphere as high as 100 kilometers.

研究人员继续观察到室内温度区域的温度和钠密度，并以风/温度激光刺激。 他们通过白天和风能提高了激光雷达的准确性和鲁棒性，并在三年内使用足够的数据来揭示数据的季节性变化。 除了探索气候和趋势外，这一长数据集还揭示了有关气候平均值，潮汐和重力波，热通量，水平风和温度 - 钠密度相关性的可变性的信息。 不断收集的，分析的数据可以为LiDAR提供有趣的结果。 例如，调查人员观察到3 - 4年的变暖趋势（1993年达到峰值），绘制每个高度的每月平均温度，据信是Pinatubo影响大气高达100公里的第一个证据。