Development of RASS system for atmospheric temperature sounding

大气温度探测RASS系统的研制

• 批准号: 09554022
• 负责人: NAKAMURA Takuji
• 金额: $ 4.67万
• 依托单位: KYOTO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09554022/
• 关键词: RASS radar; Radar remote sensing; troposphere and stratosphere; tropopause; MST radar; atmospheric humidity; meso-scale meteorology; atmospheric stability; 湿潤大気; 大気温度; リモートセンシング; 気象擾乱; 電波音波併用レーダー; 温度プロファイル; 大気観測用レーダー; 気象レーダー

The goal of this project is to develop a RASS sounding system for atmospheric temperature measurement for the troposphere and the lower stratosphere to be attached to the MU radar using high power acoustic wave source, which can be operated continuously, routinely with a good precision.A system with a RASS control PC for ray tracing and control of acoustic wave sources, which is directly connected to the radar data processing system has been developed. Sophisticared ray tracing and observation control softwares have been developed.Using radio wave transmission of acoustic wave source from the observation room, a very stable system for acoustic wave source with a control of various wave sources has been realized. Through such system, acoustic array with full synchronization controlled from the radar observation room has been completed. This system enabled to observed up to tropopause in summer and mid-troposphere in winter.From the RASS observation with the developed system and radiosondes, atmospheric stability, radar echo intensity any energy dissipation rate have been closely studied and the correlations and interrelationship have been studied.Profiling technique of atmospheric humidity has also been developed by analyzing radar echo intensity and atmospheric stability from RASS measurement.Thus, the achivements of this project are more than the initial expectation, which have been published in domestic and international conferences and in journals.

本项目的目标是研制一种用于测量对流层和平流层低层大气温度的RASS探测系统，该系统可安装在MU雷达上，使用高功率声波源，可连续、常规地工作，具有良好的精度。它直接连接到雷达数据处理系统。开发了先进的射线追踪和观测控制软件，利用观测室的声波源的无线电波传输，实现了对各种波源进行控制的非常稳定的声波源系统。通过该系统，实现了从雷达观测室控制的全同步声基阵。该系统在夏季可观测到对流层顶，在冬季可观测到对流层中层。利用该系统和探空仪对大气稳定度、雷达回波强度和能量耗散率进行了详细的研究，并研究了它们之间的相关性和相互关系。通过分析雷达回波强度和大气稳定度，发展了大气湿度廓线技术。因此，本课题的研究成果已在国内外学术会议和期刊上发表，超过了最初的预期。

项目成果

Furumoto,J.: "Characteristics of Energy Dissipation Rate and Effect of Humidity on Turbulence Echo Power Revealed by MU Radar-RASS Measurements,"J.Atmos.Terr.Phys.. (2000)

Furumoto,J.：“MU 雷达-RASS 测量揭示的能量耗散率特征和湿度对湍流回波功率的影响”，J.Atmos.Terr.Phys.. (2000)

Tsuda,H.: "Azimuth angle variations of specular reflection echoes in the lower atmosphere observed with the MU radar"J.Atmos.Terr.Phys.. 59. 777-784 (1997)

Tsuda,H.：“用 MU 雷达观测到的低层大气中镜面反射回波的方位角变化”J.Atmos.Terr.Phys.. 59. 777-784 (1997)

Hermawan, E., T. Tsuda, and T. Adachi: "MU radar observations of tropopause variability by using clear air echo characteristics"Earth, Planets Space. 50. 361-370 (1998)

Hermawan, E.、T. Tsuda 和 T. Adachi：“MU 雷达利用晴空回波特征观测对流层顶变化”地球、行星空间。

Furumoto, J. and T. Tsuda: "Characteristics of Energy Rate and Effect of Humidity on Turbulence Echo Power Revealed by MU Radar-RASS Measurements"J. Atmos. Terr. Phys.. (in print). (2000)

Furumoto, J. 和 T. Tsuda：“MU 雷达-RASS 测量揭示的能量率特征和湿度对湍流回波功率的影响”J。

Hermawan,E: "MU radar observations of tropopause variability by using clear air echo characteristics" Earth,Planets and Space. 50. 361-370 (1998)

Hermawan，E：“MU 雷达利用晴空回波特征观测对流层顶变化”《地球、行星和空间》。