Articles | Volume 15, issue 9
https://doi.org/10.5194/amt-15-2819-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-15-2819-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
09 May 2022
Research article |
| 09 May 2022
| 09 May 2022
Observation of bioaerosol transport using wideband integrated bioaerosol sensor and coherent Doppler lidar
Dawei Tang
CAS Key Laboratory of Geospace Environment, School of Earth and Space Science, University of Science and Technology of China (USTC), Hefei 230026, China
Tianwen Wei
CAS Key Laboratory of Geospace Environment, School of Earth and Space Science, University of Science and Technology of China (USTC), Hefei 230026, China
Jinlong Yuan
CAS Key Laboratory of Geospace Environment, School of Earth and Space Science, University of Science and Technology of China (USTC), Hefei 230026, China
CAS Key Laboratory of Geospace Environment, School of Earth and Space Science, University of Science and Technology of China (USTC), Hefei 230026, China
Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China (USTC), Hefei 230026, China
CAS Center for Excellence in Comparative Planetology, University of Science and Technology of China (USTC), Hefei 230026, China
Xiankang Dou
CAS Key Laboratory of Geospace Environment, School of Earth and Space Science, University of Science and Technology of China (USTC), Hefei 230026, China
School of Electronic Information, Wuhan University, Wuhan 430072, China
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Atmos. Meas. Tech., 19, 3253–3269, https://doi.org/10.5194/amt-19-3253-2026, https://doi.org/10.5194/amt-19-3253-2026, 2026
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In April 2024, we observed a fluorescent layer using fluorescence lidar at Nanping, South China. By combining multiple sources of information, we found that the long-range transported biomass burning aerosol (BBA) emitted by weak fire activity in the Indo-China Peninsula (ICP) was a major contributor to this layer. Our observations show that even weak fires in the ICP can affect South China, providing new insights into BBA transport in this region.
Tianle Bai, Yuanyi Lin, Mengya Wang, Tianwen Wei, Fangzhi Wei, Kuancheng Lv, and Haiyun Xia
EGUsphere, https://doi.org/10.5194/egusphere-2026-1739, https://doi.org/10.5194/egusphere-2026-1739, 2026
This preprint is open for discussion and under review for Atmospheric Measurement Techniques (AMT).
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This study investigates how fast-moving air currents close to the ground influence the vertical transport of dust over Hefei in eastern China. Using laser-based wind observations during two dust events, it shows that one event rapidly brings dust down to the surface, whereas the other keeps dust suspended at higher altitudes and delays surface pollution. These findings improve understanding of how dust is redistributed in the lower atmosphere and help improve weather and air-quality forecasts.
Lian Su, Haiyun Xia, Chunsong Lu, Jinlong Yuan, Kenan Wu, Tianwen Wei, Xiaofei Wang, Qing He, Mohamed Elshora, Xi Luo, and Xinyang Li
Atmos. Meas. Tech., 19, 2657–2668, https://doi.org/10.5194/amt-19-2657-2026, https://doi.org/10.5194/amt-19-2657-2026, 2026
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1. The formation of ice crystal clouds catalyzed by dust aerosols were observed by coherent Doppler wind lidar in the Taklimakan Desert. 2. The wind provides a dynamic basis for the formation of ice crystal clouds and plays an important role in the decomposition process. 3. The special basin topography, turbulence and downdrafts keep the base height of the ice crystal clouds at around 3 km.
Wen Yi, Jianyuan Wang, Xianghui Xue, Chengyun Yang, Iain M. Reid, Robert A. Vincent, Andrew Mackinnon, Damian J. Murphy, Njål Gulbrandsen, Masaki Tsutsumi, Baiqi Ning, Guozhu Li, Nicholas J. Mitchell, Tracy Moffat-Griffin, Toshitaka Tsuda, Alan Z. Liu, Zishun Qiao, Haiying Li, Paulo P. Batista, Jianfei Wu, Tingdi Chen, and Xiankang Dou
EGUsphere, https://doi.org/10.5194/egusphere-2026-1883, https://doi.org/10.5194/egusphere-2026-1883, 2026
This preprint is open for discussion and under review for Atmospheric Chemistry and Physics (ACP).
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This study provides observational evidence that the solar zenith angle (SZA) influences the vertical structure of diurnal tides in the MLT region. Diurnal tides are strongest at low and mid-latitudes (10–50° N/S) and weaker near the Equator and at polar latitudes. The results further suggest that background zonal winds influence tidal propagation and structure through filtering and momentum drag.
Daihao Yu, Qiuwei Xia, Saifen Yu, Yixiang Chen, Keyi Xu, Haobin Han, Jianjun Guo, Kexin Guo, Jiadong Hu, Zhen Zhang, Jing Cai, Yuanjian Yang, and Haiyun Xia
EGUsphere, https://doi.org/10.5194/egusphere-2025-6470, https://doi.org/10.5194/egusphere-2025-6470, 2026
This preprint is open for discussion and under review for Atmospheric Chemistry and Physics (ACP).
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Industrial parks are critical nodes in the global carbon cycle. This study combines high-resolution lidar observations and the WRF-GHG model to examine CO2 accumulation and dispersion in a semi-enclosed bay. Distinct diurnal patterns emerge: nighttime accumulation and daytime dispersion driven by terrain, atmospheric stability and sea breezes. WRF-GHG captures temporal trends, but it underestimates CO2 levels, indicating limitations in emission inventories and terrain-wind interactions.
Tianwen Wei, Mengya Wang, Kenan Wu, Jinlong Yuan, Haiyun Xia, and Simone Lolli
Atmos. Meas. Tech., 18, 1841–1857, https://doi.org/10.5194/amt-18-1841-2025, https://doi.org/10.5194/amt-18-1841-2025, 2025
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This study analyzes three years of wind lidar measurements to explore the dynamics of the urban planetary boundary layer in Hefei, China. Results reveal that nocturnal low-level jets are most frequent in spring and intensify in summer, significantly enhancing turbulence and shear near the surface, particularly at night. Additionally, cloud cover raises the mixing layer height by approximately 100 m at night due to the greenhouse effect but reduces it by up to 200 m in the afternoon.
Lian Su, Chunsong Lu, Jinlong Yuan, Xiaofei Wang, Qing He, and Haiyun Xia
Atmos. Chem. Phys., 24, 10947–10963, https://doi.org/10.5194/acp-24-10947-2024, https://doi.org/10.5194/acp-24-10947-2024, 2024
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The cold downhill airflow of the Tibetan Plateau leading to the low-level jet weakens the height and intensity of the inversion layer, which reduces the energy demand for the broken inversion layer. The low-level jet causes dust aerosols to accumulate near the ground. The material conditions for the development of the desert atmospheric boundary layer can be quickly transformed into thermal conditions.
Kenan Wu, Tianwen Wei, Jinlong Yuan, Haiyun Xia, Xin Huang, Gaopeng Lu, Yunpeng Zhang, Feifan Liu, Baoyou Zhu, and Weidong Ding
Atmos. Meas. Tech., 16, 5811–5825, https://doi.org/10.5194/amt-16-5811-2023, https://doi.org/10.5194/amt-16-5811-2023, 2023
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A compact all-fiber coherent Doppler wind lidar (CDWL) working at the 1.5 µm wavelength is applied to probe the dynamics and microphysics structure of thunderstorms. It was found that thunderclouds below the 0 ℃ isotherm have significant spectrum broadening and an increase in skewness, and that lightning affects the microphysics structure of the thundercloud. It is proven that the precise spectrum of CDWL is a promising indicator for studying the charge structure of thunderstorms.
Wen Yi, Jie Zeng, Xianghui Xue, Iain Reid, Wei Zhong, Jianfei Wu, Tingdi Chen, and Xiankang Dou
Atmos. Meas. Tech. Discuss., https://doi.org/10.5194/amt-2022-254, https://doi.org/10.5194/amt-2022-254, 2022
Revised manuscript not accepted
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In recent years, the concept of multistatic meteor radar systems has attracted the attention of the atmospheric radar community, focusing on the MLT region. In this study, we apply a multistatic meteor radar system consisting of a monostatic meteor radar in Mengcheng (33.36° N, 116.49° E) and a remote receiver in Changfeng (31.98° N, 117.22° E) to estimate the two-dimensional horizontal wind field, and the horizontal divergence and relative vorticity of the wind field.
Shican Qiu, Mengzhen Yuan, Willie Soon, Victor Manuel Velasco Herrera, Zhanming Zhang, and Xiankang Dou
Ann. Geophys. Discuss., https://doi.org/10.5194/angeo-2022-22, https://doi.org/10.5194/angeo-2022-22, 2022
Revised manuscript not accepted
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In this paper, the solar radiation index Y10 acts as an indicator of the solar activity, and the vertical column of ice water content (IWC) characterizes the nature of the polar mesosphere cloud (PMC). Superposed epoch analysis is used to determine the time lag days of temperature and IWC anomalies in responding to Y10 for the PMC seasons from 2007–2015. The results show that the IWC can respond quickly to temperature within time lag of one day.
Yetao Cen, Chengyun Yang, Tao Li, James M. Russell III, and Xiankang Dou
Atmos. Chem. Phys., 22, 7861–7874, https://doi.org/10.5194/acp-22-7861-2022, https://doi.org/10.5194/acp-22-7861-2022, 2022
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The MLT DW1 amplitude is suppressed during El Niño winters in both satellite observation and SD-WACCM simulations. The suppressed Hough mode (1, 1) in the tropopause region propagates vertically to the MLT region, leading to decreased DW1 amplitude. The latitudinal zonal wind shear anomalies during El Niño winters would narrow the waveguide and prevent the vertical propagation of DW1. The gravity wave drag excited by ENSO-induced anomalous convection could also modulate the MLT DW1 amplitude.
Lian Zong, Yuanjian Yang, Haiyun Xia, Meng Gao, Zhaobin Sun, Zuofang Zheng, Xianxiang Li, Guicai Ning, Yubin Li, and Simone Lolli
Atmos. Chem. Phys., 22, 6523–6538, https://doi.org/10.5194/acp-22-6523-2022, https://doi.org/10.5194/acp-22-6523-2022, 2022
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Heatwaves (HWs) paired with higher ozone (O3) concentration at surface level pose a serious threat to human health. Taking Beijing as an example, three unfavorable synoptic weather patterns were identified to dominate the compound HW and O3 pollution events. Under the synergistic stress of HWs and O3 pollution, public mortality risk increased, and synoptic patterns and urbanization enhanced the compound risk of events in Beijing by 33.09 % and 18.95 %, respectively.
Shican Qiu, Mengxi Shi, Willie Soon, Mingjiao Jia, Xianghui Xue, Tao Li, Peng Ju, and Xiankang Dou
Atmos. Chem. Phys. Discuss., https://doi.org/10.5194/acp-2021-1085, https://doi.org/10.5194/acp-2021-1085, 2022
Revised manuscript not accepted
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The solitary wave theory is applied for the first time to study the sporadic sodium layers (NaS). We perform soliton fitting processes on the observed data from the Andes Lidar Observatory, and find out that 24/27 NaS events exhibit similar features to a soliton. Time series of the net anomaly reveal the same variation process to the solution of a five-order KdV equation. Our results suggest the NaS phenomenon would be an appropriate tracer for nonlinear wave studies in the atmosphere.
Liang Tang, Sheng-Yang Gu, and Xian-Kang Dou
Atmos. Chem. Phys., 21, 17495–17512, https://doi.org/10.5194/acp-21-17495-2021, https://doi.org/10.5194/acp-21-17495-2021, 2021
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Our study explores the variation in the occurrence date, peak amplitude and wave period for eastward waves and the role of instability, background wind structure and the critical layer in eastward wave propagation and amplification.
Pu Jiang, Jinlong Yuan, Kenan Wu, Lu Wang, and Haiyun Xia
Atmos. Meas. Tech. Discuss., https://doi.org/10.5194/amt-2021-288, https://doi.org/10.5194/amt-2021-288, 2021
Revised manuscript not accepted
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To analyse the atmospheric turbulence in high resolution, we proposed a new method by combining the advantages of two remote sensing instruments. A contrastive experiment was conducted horizontally to verify the method. Based on the result, we obtained and analyzed the continuous Cn2 and other turbulence profiles with high temporal and spatial resolution simultaneously. It is significant for studying the complex and fast-changing atmospheric environment.
Shican Qiu, Ning Wang, Willie Soon, Gaopeng Lu, Mingjiao Jia, Xingjin Wang, Xianghui Xue, Tao Li, and Xiankang Dou
Atmos. Chem. Phys., 21, 11927–11940, https://doi.org/10.5194/acp-21-11927-2021, https://doi.org/10.5194/acp-21-11927-2021, 2021
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Our results suggest that lightning strokes would probably influence the ionosphere and thus give rise to the occurrence of a sporadic sodium layer (NaS), with the overturning of the electric field playing an important role. Model simulation results show that the calculated first-order rate coefficient could explain the efficient recombination of Na+→Na in this NaS case study. A conjunction between the lower and upper atmospheres could be established by these inter-connected phenomena.
Wei Zhong, Xianghui Xue, Wen Yi, Iain M. Reid, Tingdi Chen, and Xiankang Dou
Atmos. Meas. Tech., 14, 3973–3988, https://doi.org/10.5194/amt-14-3973-2021, https://doi.org/10.5194/amt-14-3973-2021, 2021
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Short summary
During 11–20 March 2020, three aerosol transport events were investigated by a lidar system and an online bioaerosol detection system in Hefei, China.
Observation results reveal that the events not only contributed to high particulate matter pollution but also to the transport of external bioaerosols, resulting in changes in the fraction of fluorescent biological aerosol particles.
This detection method improved the time resolution and provided more parameters for aerosol detection.
During 11–20 March 2020, three aerosol transport events were investigated by a lidar system and...
