Daytime and Nighttime Lidar Measurement of the Mesopause Temperature

白天和夜间激光雷达测量中层顶温度

• 批准号: 12640434
• 负责人: NAGASAWA Chikao
• 金额: $ 2.43万
• 依托单位: Tokyo Metropolitan University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12640434/
• 关键词: mesopause; temperature; metallic atom; sodium; dye laser; atomic filter; resonance scattering lidar; 気温; ナトリウム層

We have developed a new lidar system for measuring mesospheric Na temperature profiles that uses a pulsed dye oscillator and amplifier system injection-seeded by a stabilized cw ring dye laser. The laser system can generate easily the high pulse energy keeping up the narrow bandwidth. Using this system, we have performed the simultaneous observations of the Na density and the Na temperature in the midlatitude. We also developed Sodium-vapor dispersive Faraday filter for daytime observation. Nighttime and daytime Na layers in the mesopause have been observed continuously with the resonance scattering lidar system in the midlatitude. In the continuous observations more than 148 hours, the 6-hour, 8-hour, 12-hour and longer-hour oscillations of the Na layers were recognized. Eight events of the sporadic Na layers in daytime were observed. Characteristics of the sporadic Na layers during daytime are compared with the nighttime sporadic Na layer.

我们开发了一种新的激光雷达系统，用于测量中间层 Na 温度分布，该系统使用脉冲染料振荡器和放大器系统，通过稳定的连续波环染料激光器注入种子。激光系统可以轻松产生高脉冲能量，保持窄带宽。利用该系统，我们对中纬度地区的Na密度和Na温度进行了同步观测。我们还开发了用于白天观察的钠蒸气色散法拉第滤光片。利用中纬度地区的共振散射激光雷达系统连续观测到中层顶的夜间和白天钠层。在超过148小时的连续观测中，识别出Na层的6小时、8小时、12小时和更长小时的振荡。白天观察到八个零星钠层事件。将白天零星Na层的特征与夜间零星Na层的特征进行了比较。

项目成果

C. NAGASAWA: "Lidar Technique for Na Temperature Measurements in the Mesopause Region"Advances in Laser Remote Sensing. 417-420 (2001)

C. NAGASAWA：“中层顶区域 Na 温度测量的激光雷达技术”激光遥感的进展。

C.NAGASAWA: "Lidar Observations of Na Density, Ca Ion Density, Temperature, and Wind in the Mesopause Region"Lidar Remote Sensing for Industry and Environment Monitoring, Proceedings of SPIE. 4153. 480-487 (2000)

C.NAGASAWA：“中层顶地区 Na 密度、Ca 离子密度、温度和风的激光雷达观测”工业和环境监测激光雷达遥感，SPIE 论文集。

C.NAGASAWA: "Continuous Observations of Mesospheric Na Layers by a Lidar"Lidar Remote Sensing in Atmospheric and Earth Sciences. 433-436 (2002)

C.NAGASAWA：“激光雷达对中层 Na 层的连续观测”大气和地球科学中的激光雷达遥感。

C.Nagasawa,M.Abo and Y.shibata: "Lidar observations of Na density, Ca ion density, temperature, and wind in the mesopause region"Proceedings of SPIE. Vol.4153. 480-487 (2001)

C.Nagasawa、M.Abo 和 Y.shibata：“中层顶区域 Na 密度、Ca 离子密度、温度和风的激光雷达观测”SPIE 论文集。

C. NAGASAWA: "Lidar Observations of Na Density, Ca Ion Density, Temperature, and Wind in the Mesopause Region"Lidar Remote Sensing for Industry and Environment Monitoring, Proceedings of SPIE. Vol. 4153. 480-487 (2000)

C. NAGASAWA：“中层顶地区 Na 密度、Ca 离子密度、温度和风的激光雷达观测”工业和环境监测激光雷达遥感，SPIE 论文集。