Long-term (2010–2021) lidar observations of stratospheric aerosols at Wuhan, China DOI Creative Commons
Yun He, Dongzhe Jing, Zhenping Yin

et al.

Published: May 30, 2024

Abstract. Stratospheric aerosols are long-lived and play a critical role in the global radiation budget. Over past decade, contributions to stratospheric from different sources have changed due weaker volcanic activity more frequent wildfire events. However, long-term observations of monitoring major emission events remain insufficient, particularly at middle low latitudes. In this study, we analyze vertical distribution, optical properties, radiative forcing using ground-based polarization lidar Wuhan (30.5° N, 114.4° E) 2010 2021. The aerosol depth (sAOD) generally stabilized around 0.0023 without significant annual variation. Several cases wildfire-induced smoke were observed. Volcanic Nabro (2011) Raikoke (2019) eruptions (both boreal summer) increased sAOD 4.8 times background level during stratospheric-quiescent period (January 2013 August 2017). Tracers Canadian summer 2017 was observed twice: 19–21 km on 14–17 September 20–23 28–31 October, with plume-isolated AOD 0.002–0.010 particle linear depolarization ratio δp 0.14–0.18, indicating dominance non-aged particles. During these summertime events, injected captured by large-scale Asian monsoon anticyclone (AMA), confining transport pathway mid-latitude Asia. On 8–9 November 2020, plumes originating California October 2020 appeared 16–17 km, 0.007 mean 0.13. Regarding seasonal variation, cold half-year (0.0026) is 24 % larger than warm (0.0021) stronger meridional tropics -0.05 W·m-2 -0.28 when largely injected. These findings contribute our understanding patterns over Asia serve as important database for validation model outputs.

Language: Английский

Simultaneous profiling of dust aerosol mass concentration and optical properties with polarized high-spectral-resolution lidar DOI Creative Commons
Da Xiao, Nanchao Wang, Sijie Chen

et al.

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 872, P. 162091 - 162091

Published: Feb. 8, 2023

Dust particles originating from arid desert regions can be transported over long distances, presenting severe risks to climate, environment, social economics, and human health at the source downwind regions. However, there has been a dearth of continuous diurnal observations vertically resolved mass concentration optical properties dust aerosols, which hinders our understanding aerosol mixing, stratification, aerosol-cloud interactions, their impacts on environment. To fill gap insufficient observations, best knowledge, this work presents first high-spectral-resolution lidar (HSRL) observation providing days profiles concentration, along with particle linear depolarization ratio (PLDR), backscattering coefficient, extinction coefficient (LR), simultaneously. We present results two strong events observed by HSRL Beijing in 2021. The maximum concentrations reached (1.52 ± 3.5) x103 μg/m3 (19.48 0.36) for events, respectively. retrieved depth (AOD) agree well surface PM10 sun photometer correlation coefficients 0.90 0.95, intensive PLDR LR aerosols are 0.31 0.02 39 7 sr 532 nm, respectively, generally close those obtained areas. Moreover, inspired HSRL, universal analytical relationship is discovered evaluate proportion backscattering, extinction, AOD, using PLDR. reveals that directly quantify contribution, expected further expand application polarization technology detection. These valuable findings contribution environment help supplement databases.

Language: Английский

Citations

23
How much do atmospheric depressions and Mongolian cyclones contribute to spring dust activities in East Asia? DOI Creative Commons
Feifei Mu, Stephanie Fiedler

npj Climate and Atmospheric Science, Journal Year: 2025, Volume and Issue: 8(1)

Published: Feb. 15, 2025

Language: Английский

Citations

1
An analysis of air pollution associated with the 2023 sand and dust storms over China: Aerosol properties and PM10 variability DOI Creative Commons
Mikalai Filonchyk, Michael P. Peterson, Lifeng Zhang

et al.

Geoscience Frontiers, Journal Year: 2023, Volume and Issue: 15(2), P. 101762 - 101762

Published: Nov. 22, 2023

Every spring, a large part of China is confronted with sand and dust storms (SDS) – mainly originating in the Gobi (including Chinese Mongolian Gobi) Taklamakan deserts. In March-April 2023, most northern, northwestern northeastern was struck by three sandstorms that affected an area more than 500 million people. this study, aerosol optical, microphysical radiative properties were studied during these SDS events using integrated approach combines satellite, terrestrial re-analysis data. The results showed dusty conditions observed areas north Yangtze River (Chang Jiang) daily average PM10 concentrations exceeding 1000 µg/m3 many cities. VIIRS optical depth (AOD) at 550 nm exceeded value 1 throughout nearly entire northern country. AERONET data obtained from AOE_Baotou site significant increase total AOD corresponding decrease AE SDS. single scattering albedo (SSA), asymmetry parameter (ASY), real refractive index (RRI) imaginary (IRI) values indicate abundance coarse-mode particles. Aerosol forcing (ARF) top atmosphere earth's surface always negative period ranged −48.5 to + 2.7 Wm−2 −180.8 −66.6 Wm−2, resulting high positive ARF ATM (from 63.8 132.3 Wm−2). Each affects heating cooling on surface. atmospheric rates 1.8 3.7 K day−1. formation resulted passage cold fronts associated low pressure systems basins, creating for rise into move further downwind.

Language: Английский

Citations

20
Evaluating the multi-variable influence on O3, NO2, and HCHO using BRTs and RF model DOI

Junaid Khayyam,

Pinhua Xie,

Jin Xu

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 925, P. 171488 - 171488

Published: March 9, 2024

Language: Английский

Citations

5
Characteristics of Dust Weather in the Tarim Basin from 1989 to 2021 and Its Impact on the Atmospheric Environment DOI Creative Commons

Yongchao Zhou,

Xin Gao,

Jiaqiang Lei

et al.

Remote Sensing, Journal Year: 2023, Volume and Issue: 15(7), P. 1804 - 1804

Published: March 28, 2023

Dust emission is a common catastrophic weather phenomenon in Northern China. This not only causes environmental problems, such as air pollution, but also has an important impact on the global dust cycle and climate change. On basis of observation data 44 surface meteorological stations Tarim Basin from 1989 to 2021, combined with aerosol optical depth (DAOD), mass concentration (DUSMASS) wind speed data, this paper analyses spatial temporal characteristics over past 33 years. Results show that frequency declined mainly consisted floating dust, followed by blowing storm. had significant seasonal change, more spring summer less autumn winter. The was distributed along south edge desert hinterland Tazhong. distribution intensity (DI) index basically consistent days. Moreover, DAOD obviously affected positive correlation number days DI, suggesting vertical particles certain extent. Wind one most factors affecting release dust. strong decreases northeast southwest, which corresponds DUSMASS.

Language: Английский

Citations

11
1064 nm rotational Raman polarization lidar for profiling aerosol and cloud characteristics DOI Creative Commons
Longlong Wang, Zhenping Yin, Tong Lü

et al.

Optics Express, Journal Year: 2024, Volume and Issue: 32(9), P. 14963 - 14963

Published: March 19, 2024

The vertical profiles of aerosol or mixed-phase cloud optical properties (e.g. extinction coefficient) at 1064 nm are difficult to obtain from lidar observations. Based on the techniques rotational Raman signal 1058 described by Haarig et al. [Atmos. Meas. Tech.9, 4269 (2016)10.5194/amt-9-4269-2016], we have developed a novel polarization Wuhan University. In this design, optimized central wavelength channel 1056 with bandwidth 6 increase signal-to-noise ratio and minimize temperature dependence extracted spectrum. And then separated elastic channels (1064 Parallel, P Cross, S) into near range (low far detection (high extend dynamic observation. Silicon single photon avalanche diodes (SPAD) working counting mode were applied improve quantum efficiency reduce electronic noise, which resulted in 2.5%. With power 3 W diode pumped pulsed Nd:YAG laser aperture 250 mm Cassegrain telescope, detectable can cover atmosphere 0.3 km top troposphere (about 12-15 km). To best our knowledge, design system is observations backscatter coefficients, depolarization performed as demonstrations capabilities.

Language: Английский

Citations

4
Evaluation of dust emission and land surface schemes in predicting a mega Asian dust storm over South Korea using WRF-Chem DOI Creative Commons
Ji Won Yoon, Seung‐Yeon Lee,

Ebony Lee

et al.

Geoscientific model development, Journal Year: 2025, Volume and Issue: 18(7), P. 2303 - 2328

Published: April 14, 2025

Abstract. This study evaluates the performance of Weather Research and Forecasting Model coupled with Chemistry (WRF-Chem) in forecasting a mega Asian dust storm (ADS) event that occurred over South Korea on 28–29 March 2021. We specifically evaluated combination five emission schemes four land surface schemes, which are crucial for predicting ADSs. Using both situ remote sensing data, we assessed meteorological air quality variables, including 2 m temperature, relative humidity, 10 wind speed, particulate matter diameter 10µm or less (PM10), aerosol optical depth (AOD) Korea. Our results indicate prediction variables is more influenced by scheme than – generally showing good when combined Noah model multiple parameterization options (Noah-MP). In contrast, PM10 AOD, strongly affected directly related to generation amount through interaction properties. Among total 20 available combinations, University Cologne 2004 Community Land version 4.0 (UoC04-CLM4) showed best performance, closely followed 2001 CLM4 (UoC01-CLM4). UoC04-CLM4 outperformed other combinations reducing root mean square errors up 29.6 %. However, UoC01-CLM4 simulated values closest MODIS AOD but tended overestimate some regions during transport processes. significantly underestimated throughout entire simulation process

Language: Английский

Citations

0
Evaluation of Urban PM2.5 Concentrations over 73 Major Cities and Their Association with satellite Aerosol Optical Depth: A Global Analysis of Ambient Air Pollution DOI
Dimitris Stratoulias, Byeong-Hui Jang, Narissara Nuthammachot

et al.

Atmospheric Pollution Research, Journal Year: 2025, Volume and Issue: unknown, P. 102556 - 102556

Published: April 1, 2025

Language: Английский

Citations

0
Trans-Boundary Dust Transport of Dust Storms in Northern China: A Study Utilizing Ground-Based Lidar Network and CALIPSO Satellite DOI Creative Commons
Zhisheng Zhang,

Zhiqiang Kuang,

Caixia Yu

et al.

Remote Sensing, Journal Year: 2024, Volume and Issue: 16(7), P. 1196 - 1196

Published: March 29, 2024

During 14–16 March 2021, a large-scale dust storm event occurred in the northern region of China, and it was considered most intense past decade. This study employs observation data for PM2.5 PM10 from air quality monitoring station, HYSPLIT model, ground-based polarized Lidar networks, AGRI payload Fengyun satellites CALIPSO satellite to jointly explore scrutinize three-dimensional spatial temporal characteristics aerosol transport. Firstly, by integrating meteorological PM10, is assessed across six stations within network during storm. Secondly, employing backward trajectory tracking elucidates sources at sites. Thirdly, deploying newly devised portable infrared 1064 nm pulsed 532 Lidar, established vertical probing transboundary transport observed region. Finally, incorporating cloud imagery data, this revealed classification height distribution layers pertinent sites network. The findings affirm that eastward movement southward compression intensifying Mongolian cyclone led severe weather western southern Mongolia, as well Inner further transporting into northern, northwestern, northeastern parts China. wielded substantial impact on broad expanse manifesting localized storms Beijing, Gansu, surrounding areas. In essence, emanated deserts Mongolia northwest encompassing both Gobi amalgamation spaceborne observations conclusively establishes source ranged 3 5 km. Influenced high-pressure systems, protracted over extensive distances prompted gradual reduction its owing sedimentation. comprehensive analysis research information collectively affirms precision efficacy conducted

Language: Английский

Citations

3
Climatology of Dust Aerosols over the Jianghan Plain Revealed with Space-Borne Instruments and MERRA-2 Reanalysis Data during 2006–2021 DOI Creative Commons
Chuan Liu, Zhenping Yin, Yun He

et al.

Remote Sensing, Journal Year: 2022, Volume and Issue: 14(17), P. 4414 - 4414

Published: Sept. 5, 2022

In recent years, climate change and the intervention of anthropogenic activities have altered seasonal features Asian dust storms. This may also cause variations (including occurrence frequency optical/microphysical properties) in aerosols transported to downstream regions. The Jianghan Plain is dramatically influenced by multiple sources due its geographical location central China. this study, we focused on climatology over based 15-year (2006–2021) continuous space-borne observations Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) as well Modern-Era Retrospective Analysis for Research Applications version 2 (MERRA-2) reanalysis data. A typical event that intrudes was studied detail. According statistical results, frequently intrude into spring winter, frequencies (under cloud free condition hereafter) exceeding 0.70 higher altitudes 4–6 km. declined approximately 0.40 autumn nearly zero summer, while plumes were generally located at lower 1–3 observed simultaneously linked Taklimakan Desert Gobi mainly originated from winter autumn. particles distributed below 4-km altitude, largest extinction coefficients mass concentrations spring. all seasons, particle depolarization ratios are 0.1–0.2 suggesting a possible mix local aerosols. mean column showed an evident declining trend 210 µg m−2 2006 100 2021 Plain, attributed reduced activity source regions dust.

Language: Английский

Citations

14