Previous studies have shown that dust aerosols may accelerate the melting of snow and glaciers over Tibetan Plateau. To investigate vertical structure aerosols, we conducted a ground-based observation by using multi-wavelength polarization lidar which is designed for continuous network measurements. In this study, used from September to October 2020 at Ruoqiang site (39.0°N, 88.2°E; 894 m ASL), located junction Taklimakan Desert–Tibetan Our results showed can be lifted up 5 km ground,...

Ferrocene was utilized to functionalize reduced graphene oxide and exfoliate graphite flakes by a ligand-exchange reaction.

Accurate identification of aerosols and cloud from remote sensing observations is importance for quantitatively evaluating their radiative forcing related impacts. Even though polarization lidar has exhibited a unique advantage classifying atmospheric clouds over the past several decades, measurements are often achieved at one wavelength (UV or VIS) using laser sensing. To better identify types clouds, we developed ground-based dual-polarization system that can simultaneously detect...

The vertical structure of dust properties in desert sources is crucial for evaluating their long-range transportation and radiative forcing. To investigate profiles optical the Taklimakan Desert, we conducted ground-based polarization Raman lidar measurements Tazhong (83.39°E, 38.58°N, 1103 m above sea level), located at center Desert summer 2019. system developed by Lanzhou University continuous network observation capable measuring 532 355 nm detecting signals 387, 407, 607 nm. results...

Abstract Previous studies have shown that Saharan dust can be transported thousands of miles, affecting regional climates, environments, and ecosystems. However, research on the long‐range transport in Asia remains limited. We systematically investigated transportation over East from 2007 to 2020 using WRF‐Chem model simulations, space‐borne CALIPSO lidar observations, NCEP/NCAR reanalysis data, as well HYSPLIT trajectory analysis. The results show one quarter (24.3 ± 6.2%) events during...

Abstract. On 16 April 2022, China successfully launched the world's first spaceborne high-spectral-resolution lidar (HSRL), which is called Aerosol and Carbon Detection Lidar (ACDL), on board Atmospheric Environment Monitoring Satellite known as Daqi-1 (DQ-1). The ACDL expected to precisely detect three-dimensional distribution of aerosol cloud globally with high spatial–temporal resolutions. To assess performance newly satellite lidar, ACDL-retrieved observations were compared ground-based...

Polarization lidar has been widely used in recent decades to observe the vertical structures of aerosols and clouds atmosphere. We developed a dual-polarization system that can detect polarization measurements simultaneously at 355 nm 532 nm. Dust events haze episodes over northern China 2014 were observed by lidar. The results showed dust-dominated aerosol depolarization ratios larger than those nm, but air pollutants smaller, indicating this tool could provide more accurate classification...

Polarization measurements have been widely used to detect aerosol properties by remote sensing in recent decades. To better understand the polarization characteristics of aerosols lidar, numerically exact T-matrix method was simulate depolarization ratio (DR) dust and smoke at typical laser wavelengths this study. The results show that DRs obviously different spectral dependences. Moreover, two has an obvious linear relationship with microphysical aerosols, including aspect ratio, effective...

Epidemiological evidence on the health effects of pesticide exposure among greenhouse workers is limited, and mechanisms are lacking. Building upon our team's previous population study, we selected two pesticides, CPF EB, with high detection rates, based theoretical foundation that liver serves as a detoxifying organ, constructed toxicity model using HepG2 cells to investigate impact individual or combined hepatic metabolism profile, attempting identify targeted biomarkers. Our results...

Aerosol microphysical properties, such as volume concentration (VC) and effective radius (ER), are of great importance to evaluate their radiative forcing impacts on climate change. However, range-resolved aerosol VC ER still cannot be obtained by remote sensing currently except for the column-integrated one from sun-photometer observation. In this study, a retrieval method is firstly proposed based partial least squares regression (PLSR) deep neural networks (DNN), combining polarization...

Understanding the vertical structures of cloud condensation nuclei (CCN) and ice-nucleating particle (INP) number concentrations in desert source regions is crucial for examining dust-cloud interactions other related impacts. To explore profiles CCN INP their possible atmospheric–dynamic influence factors at center Taklimakan Desert, intensive observations were conducted by employing a ground-based polarization Raman lidar, sounding balloons, sun photometer Tazhong (83.39° E, 38.58° N, 1103...

Abstract Ce/SiO 2 composited cross‐linked chitosan (C‐CTS‐S), SiO (CTS‐S) and Ce (C‐CTS) flocculation materials are successfully synthesized. The structure along with the decolorization performance mechanism of treating tartrazine dye wastewater studied. results show that prepared new composites rather than mixture raw agents. Some silica species embed in matrix or stay on surface (CTS) during compositing process, form hydrogen bonds –NH –OH CTS. Besides, participate coordination C‐CTS‐S has...

Abstract Taklimakan dust is known to be transported over long distances the Tibetan Plateau, significantly impacting its climates and ecosystems. However, information on how aerosols affect airborne microorganisms still lacking. In summer of 2019, we simultaneously collected air samples from Plateau (Ali) Desert (Minfeng Tazhong) analyzed them using high‐throughput DNA sequencing techniques. We found that diversity bacteria decreased by 42.2% during events. contributed 85.4% ± 2.1% Plateau....

Abstract Dust devils play an important role in dust transport by carrying it from the surface into atmosphere, especially summer. However, information on how changed past decades and what caused these changes remains lacking. Based thermodynamic criteria ERA5 reanalysis data set, this study investigated long‐term variation of favorable conditions for devil occurrence East Asia over 63 years defined as potential dusty plume (PDDP) hours. Annual mean frequency PDDP was approximately 217.2 hr...

Saharan dust accounts for about 50-60% of the total global and can affect regional climate, environment ecosystems through direct indirect effects. However, long-range transport to East Asia further specific effects on its weather climate are still poorly understood. Using satellite observations combined with model simulations, multiple reanalysis data HYSPLIT trajectory analysis, we systematically study impact radiative forcing, clouds precipitation in Asia. A quarter (24.3 ± 6.2%)...

Tajikistan is located in an arid and semi-arid region, with a dry climate sparse precipitation the sandstorms frequently occur summer. The Shaartuz lidar site (68.0°E, 36.9°N, 274 masl) basin southern Tajikistan. It observed that dust storms this area are usually lifted to height of 5-6 km above ground, which equivalent Pamirs covered ice snow. With effects complex terrain, there possibility being transported under mid-latitude westerly belt. In work, two systems Taxian...

Abstract Land is an essential basis for the sustained existence and development of human beings, arable land resources are fundamental guarantee food replenishment, contemporary scholars also put forward high requirements study remote sensing image feature type classification extraction, algorithms very necessary. Therefore, based on data, this paper combines supervised with unsupervised classification, selects advantages algorithm improves it, refers to system select standard, support...

Abstract. On April 16, 2022, China has successfully launched the world's first space-borne high spectral resolution lidar (HSRL), which is called Aerosol Carbon Detection Lidar (ACDL) onboard DQ-1 satellite. The ACDL expected to precisely detect three-dimensional distribution of aerosol and cloud globally with spatial-temporal resolutions. To assess performance newly satellite lidar, retrieved observations were compared ground-based measurements atmospheric over northwest from May July 2022...

Polarization measurements have been widely used to detect aerosol properties by remote sensing in recent decades. To better understand the polarization characteristics of aerosols lidar, numerically exact T-matrix method was simulate depolarization ratio (DR) dust and smoke at typical laser wavelengths this study. The results show that DRs obviously different spectral dependences. Moreover, two has an obvious linear relationship with microphysical aerosols, including aspect ratio, effective...