基于瑞利激光雷达对格尔木中间层大气密度的探测研究

Mesospheric density measured by Rayleigh lidar over Golmud

摘要: 2013年8月到2015年10月，利用MARMOT激光雷达对青海格尔木（36.25N，94.54E）上空50~90 km高度的中间层大气密度进行了探测。利用TIMED/SABER卫星在50 km高度探测的大气密度作为参考数据，提出了一种瑞利激光雷达探测大气密度的改进算法。结果表明，在中间层高度范围内，激光雷达的大气密度探测结果与TIMED/SABER卫星数据的一致性较好，二者的结果基本均低于MSIS-00模式值，尤其在冬季75~90 km高度存在较大偏差。

Abstract: The MARMOT(Middle Atmosphere Remote Mobile Observatory in Tibet) lidar had been deployed at Golmud(36.25N, 94.54E), Qinghai Province, for measuring the mesospheric density from 50 to 90 km from August 2013 to October 2015. An improved method for Rayleigh lidar retrieval of the mesospheric density was proposed, by using the TIMED/SABER satellite data at 50 km as the reference value. The results show that the lidar derived densities are consistent with the satellite data. However, both the lidar and satellite measurements of mesospheric densities are mostly lower than the MSIS-00 model, with the largest discrepancies occurred at 75-90 km in winter.