Showing 1 - 20 results of 38 for search '"troposphere"', query time: 0.06s Refine Results
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    Tropospheric Ducting: A Comprehensive Review and Machine Learning-Based Classification Advancements by Mohammed Banafaa, Ali Hussein Muqaibel

    Published 2025-01-01
    “…Tropospheric ducts, characterized by anomalous positive vertical refractive index gradients, significantly influence radio wave propagation by enhancing signal strength and extending communication ranges. …”
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    Effect of Future Climate Change on Stratosphere-to-Troposphere-Exchange Driven Ozone in the Northern Hemisphere by Shovan Kumar Sahu, Lei Chen, Song Liu, Jia Xing, Rohit Mathur

    Published 2023-09-01
    “…Abstract Future estimates of atmospheric pollutant concentrations serve as critical information for policy makers to formulate current policy indicators to achieve future targets. Tropospheric burden of O3 is modulated not only by anthropogenic and natural precursor emissions, but also by the downward transport of O3 associated with stratosphere to troposphere exchange (STE). …”
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    Changes in Tropospheric Nitrogen Dioxide Vertical Column Densities over Japan and Korea during the COVID-19 Using Pandora and MAX-DOAS by Yongjoo Choi, Yugo Kanaya, Hisahiro Takashima, Kihong Park, Haebum Lee, Jihyo Chong, Jae Hwan Kim, Jin-Soo Park

    Published 2023-03-01
    “…Abstract We investigated the impact of human activity during COVID-19 on the tropospheric nitrogen dioxide vertical column density (NO2 TropVCD) at three urban sites (Gwangju and Busan in Korea and Yokosuka in Japan) and one remote site (Cape Hedo in Japan) from Multi-Axis Differential Optical Absorption Spectroscopy (MAX-DOAS) and Pandora. …”
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    Vertical distribution of ice nucleating particles over the boreal forest of Hyytiälä, Finland by Z. Brasseur, J. Schneider, J. Lampilahti, V. Vakkari, V. Vakkari, V. A. Sinclair, C. J. Williamson, C. J. Williamson, C. Xavier, C. Xavier, D. Moisseev, D. Moisseev, M. Hartmann, P. Poutanen, M. Lampimäki, M. Kulmala, T. Petäjä, K. Lehtipalo, K. Lehtipalo, E. S. Thomson, K. Höhler, O. Möhler, J. Duplissy

    Published 2024-10-01
    “…However, we show one case where higher INP concentrations are observed in the free troposphere and where a homogeneous particle population exists from the surface to the free troposphere. …”
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    Catastrophic and violent tornadoes: a detailed review of physical-mathematical models by Sergey A. Arsen’yev, Lev V. Eppelbaum

    Published 2024-11-01
    “…First, gravity forces and hurricane winds in the upper troposphere form a long nonlinear wave in the lower troposphere. …”
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    Study on the Formation of Secondary Organic Aerosol by Ozonolysis of Citral in the Atmosphere by Chenxi Zhang, Xuesong Cao, Xiaomin Sun, Hengjun Peng

    Published 2021-03-01
    “…Although CIs have been previously implicated in tropospheric oxidation, the majority are simple compounds for their class, such as CH2OO• or CH3CHOO•. …”
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    Quantification of Malondialdehyde in Atmospheric Aerosols: Application of the Thiobarbituric Acid Method by David H. Gonzalez, Suzanne E. Paulson

    Published 2022-05-01
    “…A handful of studies suggest that MDA forms in the gas and aerosol phase in the troposphere, potentially contributing to inhalation toxicity, yet it has never been quantified in ambient air. …”
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    Investigation of Black Carbon Wet Deposition to the United States from National Atmospheric Deposition Network Samples by Piyaporn Sricharoenvech, Ross Edwards, Müge Yaşar, David Gay, James J. Schauer

    Published 2023-11-01
    “…These aerosols are relatively short-lived in the troposphere and are returned to the surface by wet and dry deposition processes. …”
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    Retrievals of water vapour and temperature exploiting the far-infrared: application to aircraft observations in preparation for the FORUM mission by S. Panditharatne, S. Panditharatne, S. Panditharatne, H. Brindley, H. Brindley, C. Cox, R. Siddans, R. Siddans, J. Murray, J. Murray, L. Warwick, S. Fox

    Published 2025-02-01
    “…Secondly, radiances observed from an aircraft flight in the upper troposphere are modified to match the FORUM spectral characteristics. …”
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    Advances in the Research on Brown Carbon Aerosols: Its Concentrations, Radiative Forcing, and Effects on Climate by Shuai Li, Hua Zhang, Zhili Wang, Yonghang Chen

    Published 2023-05-01
    “…Recent research suggests that: (1) Climate effects of aerosols can be represented more accurately when including BrC absorption in climate models; the regions with the highest global mean surface BrC concentrations estimated by models are mostly Southeast Asia and South America (biomass burning), East Asia and northeast India (biofuel burning), and Europe and North America (secondary sources); estimates of BrC radiative forcing are quite erratic, with a range of around 0.03–0.57 W m−2. (2) BrC heating lead to tropical expansion and a reduction in deep convective mass fluxes in the upper troposphere; cloud fraction and cloud type have a substantial impact on the heating rate estimates of BrC. …”
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    Seasonal Variations and Long-term Trend of Mineral Dust Aerosols over the Taiwan Region by Yanda Zhang, Yi-Jhen Cai, Fangqun Yu, Gan Luo, Charles C. K. Chou

    Published 2020-11-01
    “…In the different seasons, ND,d>500nm varies by about one order of magnitude from summer to spring (0.06–1.23 cm−3 in the boundary layer, 0.03–0.55 cm−3 in the middle and lower troposphere, and 0.006–0.03 cm−3 in the upper level). …”
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    Unexpected Impact of COVID-19 Lockdown on the Air Quality in the Metro Atlanta, USA Using Ground-based and Satellite Observations by Guanyu Huang, Reyla Ponder, Amber Bond, Hailey Brim, Akua Temeng, Aaron R. Naeger, Lei Zhu

    Published 2021-09-01
    “…Ground NO2 concentrations have decreased slightly 10.8% and 8.2% over the near-road (NR) and urban ambient (UA) stations, respectively. Tropospheric NO2 columns have reduced 13%–49% over the Atlanta area from space-borne observations of TROPOspheric Monitoring Instrument (TROPOMI). …”
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