A5100726413- Atmospheric and Environmental Gas Dynamics
- Atmospheric Ozone and Climate
- Atmospheric chemistry and aerosols
- Spectroscopy and Laser Applications
- Air Quality Monitoring and Forecasting
- Remote Sensing and Land Use
- Air Quality and Health Impacts
- Calibration and Measurement Techniques
- Pacific and Southeast Asian Studies
- Advanced Graph Neural Networks
- Internet of Things and Social Network Interactions
- Radio Wave Propagation Studies
- Hydrology and Sediment Transport Processes
- Environmental and Agricultural Sciences
- GNSS positioning and interference
- Ophthalmology and Visual Impairment Studies
- Graph Theory and Algorithms
- Urban Transport and Accessibility
- Radio Astronomy Observations and Technology
- Impact of Light on Environment and Health
- Plant Diversity and Evolution
- Soil Moisture and Remote Sensing
- Geochemistry and Geologic Mapping
- Space Satellite Systems and Control
- Climate change and permafrost
Anhui Institute of Optics and Fine Mechanics
2012-2024
Chinese Academy of Sciences
2015-2024
Institute of Software
2024
State Key Laboratory of Computer Science
2024
Huazhong University of Science and Technology
2024
Wuhan University of Technology
2023
University of Science and Technology of China
2011-2022
Hefei Institutes of Physical Science
2021-2022
Shandong University
2007-2021
National Astronomical Observatories
2020
Abstract. Formaldehyde (HCHO) in the ambient air not only causes cancer but is also an ideal indicator of volatile organic compounds (VOCs), which are major precursors ozone (O3) and secondary aerosol (SOA) near surface. It meaningful to differentiate between direct emission formation HCHO for pollution control sensitivity studies O3 production. However, understanding sources still poor China, due scarcity field measurements (both spatially temporally). In this study, tropospheric vertical...
Significance Genetic studies show the founders of all living non-African populations expanded from Africa ca. 65 to 45 ka. This “late dispersal” model has been challenged by discovery isolated AMHs at caves in southern China suggested as early 120 We assessed age AMH fossils five this region using ancient DNA analysis and a multimethod geological dating strategy. found they were much younger than previously suggested, with some remains Holocene owing complex depositional history these...
Abstract. The major air pollutant emissions have decreased, and the overall quality has substantially improved across China in recent years as a consequence of active clean policies for mitigating severe pollution problems. As key precursors formaldehyde (HCHO) ozone (O3), volatile organic compounds (VOCs) are still increasing due to lack mitigation measures VOCs. In this study, we investigated drivers HCHO variability from 2015 2019 over Hefei, eastern China, by using ground-based...
Abstract. A ground-based high-resolution Fourier transform spectrometer (FTS) station has been established in Hefei, China to remotely measure CO2, CO and other greenhouse gases based on near-infrared solar absorption spectra. Total column measurements of atmospheric CO2 were successfully obtained from July 2014 April 2016. The spectra collected with an InSb detector the first year compared those by InGaAs 2015, demonstrating that have better signal-to-noise ratios rms spectral fitting...
Abstract. Observations of carbon monoxide (CO) from the Measurements Of Pollution In The Troposphere (MOPITT) instrument aboard Terra spacecraft were expected to have an accuracy 10 % prior launch in 1999. Here we evaluate MOPITT Version 7 joint (V7J) thermal-infrared and near-infrared (TIR–NIR) retrieval precision suggest ways further improve observations. We take five steps involving filtering or bias corrections reduce scatter data relative other soundings ground-based measurements. (1)...
Long-term observations of the volume mixing ratio (VMR) profiles and total columns key atmospheric constituents are significant for understanding climate change impact carbon budget in China. This study provides an overview first ground-based high-resolution Fourier-transform spectrometry (FTS) observation station China, which is located Hefei, Eastern The FTS can observe VMR more than 30 constituents. Time series some observed at Hefei since 2014 have been released to public. major...
Abstract. The seasonal evolution of O3 and its photochemical production regime in a polluted region eastern China between 2014 2017 has been investigated using observations. We used tropospheric ozone (O3), carbon monoxide (CO), formaldehyde (HCHO, marker VOCs (volatile organic compounds)) partial columns derived from high-resolution Fourier transform spectrometry (FTS); nitrogen dioxide (NO2, NOx (nitrogen oxides)) column deduced the Ozone Monitoring Instrument (OMI); surface meteorological...
Abstract. We simulated instrumental line shape (ILS) degradations with respect to typical types of misalignment, and compared their influence on each NDACC (Network for Detection Atmospheric Composition Change) gas. The sensitivities the total column, root mean square (rms) fitting residual, random uncertainty, systematic degrees freedom signal (DOFs), profile different levels ILS degradation all current standard gases, i.e. O3, HNO3, HCl, HF, ClONO2, CH4, CO, N2O, C2H6, HCN, were...
Abstract. We analyzed seasonality and interannual variability of tropospheric hydrogen cyanide (HCN) columns in densely populated eastern China for the first time. The results were derived from solar absorption spectra recorded with a ground-based high-spectral-resolution Fourier transform infrared (FTIR) spectrometer Hefei (31∘54′ N, 117∘10′ E) between 2015 2018. HCN over Hefei, China, showed significant seasonal variations three monthly mean peaks throughout year. magnitude column peaked...
Remote sensing of atmospheric hydrogen fluoride (HF) is challenging because it has weak absorption signatures in the atmosphere and surrounded by strong lines from interfering gases. In this study, we first present a multi-year time series HF total columns over Hefei, China using high-resolution ground-based Fourier transform infrared (FTIR) spectrometry. Both near-infrared (NIR) mid-infrared (MIR) solar spectra suites, which are recorded following requirements Total Carbon Column Observing...
High-resolution solar absorption spectra, observed by ground-based Fourier Transform Infrared spectroscopy (FTIR), are used to retrieve vertical profiles and partial or total column concentrations of many trace gases. In this study, we present the tropospheric CO 2 columns retrieved mid-infrared spectra over Hefei, China. To reduce influence stratospheric cross-dependencies on , an a posteriori optimization method based simple matrix multiplication is correct columns. The corrected time...
Understanding the distribution of atmospheric water vapor (H2O) is crucial for global warming studies and climate change mitigation. In this study, we retrieved ground layer, tropospheric total columns H2O using ground-based high-resolution Fourier transform infrared spectrometry (FTIR). The are obtained from near-infrared (NIR) mid-infrared (MIR) spectra, layer MIR spectrum. NIR have a good consistency (R = 0.989). Additionally, similar seasonal variation to but higher amplitude. close in...
As an important irritant trace gas in the atmosphere, ammonia (NH3) significantly impacts human health and environment. Bottom-up emission inventories are widely used to estimate emissions their geographical distributions over China. However, high uncertainties still associated with due inaccurate factors used. The Differential Evolution (DE) algorithm is a population-based stochastic optimization solve complicated problems. We quantify NH3 lifetime from Infrared Atmospheric Sounding...
Abstract Glioma, particularly glioblastomas (GBM), is incurable brain tumor. The most targeted receptor tyrosine kinase (RTKs) drugs did not bring benefit to GBM patients. mechanism of glioma growth continues be explored find more effective treatment. Here, we reported that Ser/Thr protein YANK2 (yet another 2) upregulated in tissues and promotes the proliferation vitro vivo. Further, confirmed oncogene Fyn directly activated through phosphorylation its Y110, Fyn-mediated at Y110 site by...
Abstract. Synthetic halogenated organic chlorofluorocarbons (CFCs) play an important role in stratospheric ozone depletion and contribute significantly to the greenhouse effect. In this work, mid-infrared solar spectra measured by ground-based high-resolution Fourier transform infrared spectroscopy (FTIR) were used retrieve atmospheric CFC-11 (CCl3F) CFC-12 (CCl2F2) at Hefei, China. The columns observed from January 2017 December 2020 September 2015 show a similar annual decreasing trend...
Smoke is emitted from biomass burning every year. It affects regional air quality and long-term climate an important factor for fire detection of remote Sensing. An improved smoke plume method based on Kmeans clustering multi-spectral threshold analysis described in this paper. The has been developed with moderate-resolution imaging spectroradiometer (MODIS) spectral bands the characteristics different cover types. image categorized into two major types initially by basis landmark spectrum...
We utilize the tropospheric NO 2 columns derived from observations of Ozone Monitoring Instrument (OMI) onboard AURA to analyze spatial distributions and temporal trends in Wanjiang City Belt (WCB) China 2005 2016. The aim this study is assess effect industrial transfer policy on air quality WCB. Firstly, we used surface situ concentrations compare with OMI-retrieved order verify accuracy satellite data over WCB area. Although it difficult two datasets directly, comparison results prove...
It is a challenge to retrieve atmospheric sulphur hexafluoride (SF6) with high resolution solar spectra because it has only one single retrieval micro window and interfered many factors in the retrieval. Optical misalignment of key that affect accuracy SF6 In this study, we first present long term time series total column over Hefei, China, between January 2017 December 2020, retrieved by mid-infrared (MIR) recorded ground-based high-resolution Fourier transform infrared spectroscopy (FTIR)....