瑞利测风激光雷达夜间准零风层观测结果分析

胡冬冬; 舒志峰; 孙东松; 张飞飞; 窦贤康

红外与激光工程, 2015, 44 (2): 0482, 网络出版: 2016-01-26

瑞利测风激光雷达夜间准零风层观测结果分析

Quasi-zero wind layer measured by rayleigh wind lidar at night

论文大纲

胡冬冬 ^*舒志峰孙东松张飞飞窦贤康

作者单位

中国科学技术大学地球和空间科学学院，安徽合肥 230026

大气光学测风激光雷达平流层准零风层 atmospheric optics wind lidar stratosphere quasi-zero wind layer

摘要

：一台用于观测对流层和平流层风场的车载瑞利测风激光雷达于安徽合肥建成，该雷达使用双边缘技术，设计探测高度10~40 km，距离分辨率分别为100 m(20 km高度以下)和500 m(20 km高度以上)。在2011年夏季该雷达于新疆乌鲁木齐地区(42.1°N，87.1°E)进行了风场观测实验并成功观测到了平流层准零风层大气结构，给出了几组夜间典型的风场数据，根据观测结果得出：准零风层底部高度稳定在17~18 km高度而不随时间变化，而准零风层厚度则随时间有一个先增大后减小的趋势，并在北京时间凌晨0点~3点期间达到最大值。在观测中出现的准零风层厚度最大值超过15 km，最小值则仅有约2~3 km。分析认为：准零风层厚度的变化与夜间平流层接收到的紫外线辐射强度变化有关，同一时刻不同纬度上的平流层接收的紫外线辐射强度变化程度不同，导致平流层温度梯度继而大气环流的速度发生变化，从而引起准零风层厚度变化。

Abstract

In order to measure wind field of troposphere and stratosphere, a mobile Rayleigh Doppler wind lidar based on Double-edge technology was developed in Hefei, China. The detection range of the lidar is designed to cover altitudes from 10 km to 40 km with height resolution of 100 m(below 20 km) and 500 m(above 20 km). In the summer of 2011, wind field measurements were carried out in Urumqi (42.1°N, 87.1°E), the stratospheric quasi-zero wind layer, where wind velocity is almost 0 m/s, was successfully observed. Some typical results of the wind field at night were given. The quasi-zero wind layer′s bottom was found stabled at about 17-18 km height. However, the thickness of the quasi-zero wind layer would increase with time until about 0-3 a.m. Beijing time, gaining its maximum, and then decrease. The maximum thickness could be more than 15 km and minimum thickness just 2-3 km according to the author′s measurements. This phenomenon could be a result of change of the ultraviolet radiation′s intensity emitted to the stratosphere at night. The decrease and increase of the ultraviolet radiation′s intensity were different at different latitude at the same time, and that would lead to a change of temperature gradient in the stratosphere, which was pointed from lower latitudes to higher latitudes. Then the temperature gradient passes the affection to the stratosphere circulation, which was part of the quasi-zero wind layer, and eventually leads to this regular increase-decrease change.

参考文献

[1] Freeman F H, Milton H R, Michael H R, et al. Wind measurement accuracy of the NOAA pulsed infrared Doppler lidar[J]. Applied Optics, 1984, 23(15): 2503-2506.

[2] Souprayen C, Garnier A, Hertzog A, et al. Rayleigh-Mie Doppler wind lidar for atmospheric measurements. I. Instrumental setup, validation, and first climatological results[J]. Applied Optics, 1999, 38(12): 2410-2421.

[3] Shu Zhifeng, Dou Xiankang, Xia Haiyun, et al. Low Stratospheric wind measurement using mobile rayleigh doppler wind LIDAR[J]. Journal of the Optical Society of Korea, 2012, 16(2): 141-144.

[4] Shu Zhifeng, Xu Wenjing, Tang Lei, et al. Development of wind lidar based on Rayleigh scattering[J]. Infrared and Laser Engineering, 2011, 40(11): 2153-2157.

[5] Wang Guocheng, Dou Xiankang, Xia Haiyun, et al. Performance of a Rayleigh Doppler lidar for middle atmosphere wind measurement[J]. Infrared and Laser Engineering, 2012, 41(9): 2351-2357.

[6] Baker W E, Emmitt G D, Robertson F, et al. LIDAR-measured winds from space: a key component for weather and climate prediction[J]. Bull Amer Meteor Soc, 1995, 76(6): 869-888.

[7] Xia Haiyun, Dou Xiankang, Sun Dongsong, et al. Mid-altitude wind measurements with mobile Rayleigh Doppler lidar incorporating system-level optical frequency control method[J]. Optics Express, 2012, 20(14): 15286-15300.

[8] Shu Zhifeng, Tang Lei, Wang Guocheng, et al. Application of triple Fabry-Perot etalon for Rayleigh wind lidar[J] Infrared and Laser Engineering, 2011, 40(8): 1474-1480. (in Chinese)

[9] Hu Dongdong, Sun Dongsong, Shu Zhifeng, et al. Calibration of Rayleigh Doppler wind lidar receiver[J]. Infrared and Laser Engineering, 2012, 41(2): 369-374. (in Chinese)

[10] Lv Daren, Sun Baolai, Li Liqun. Zero wind layer and the first dwell experiment of high-altitude balloon in China[J]. Target Environment Feat, 2002, 1: 45-51.

[11] Xiao Cunying, Hu Xiong, Gong Jiancun, et al. Analysis of the characteristics of the stratospheric quasi-zero wind layer over China[J]. Chin J Space Sci, 2008, 28(3): 230-235. (in Chinese)

[12] Tao Mengchu, He Jinhai, Liu Yi. Analysis of the characteristics of the stratospheric quasi-zero wind layer and the effect of the quasi-biennial oscillation on it[J]. Climate and Environmental Research, 2012, 17(1): 92-102. (in Chinese)

胡冬冬, 舒志峰, 孙东松, 张飞飞, 窦贤康. 瑞利测风激光雷达夜间准零风层观测结果分析[J]. 红外与激光工程, 2015, 44(2): 0482. Hu Dongdong, Shu Zhifeng, Sun Dongsong, Zhang Feifei, Dou Xiankang. Quasi-zero wind layer measured by rayleigh wind lidar at night[J]. Infrared and Laser Engineering, 2015, 44(2): 0482.

瑞利测风激光雷达夜间准零风层观测结果分析

关于本站 Cookie 的使用提示

全站搜索

瑞利测风激光雷达夜间准零风层观测结果分析

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索