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Journal articles on the topic 'Atmospheric interference'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

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1

Rickly, Pamela, and Philip S. Stevens. "Measurements of a potential interference with laser-induced fluorescence measurements of ambient OH from the ozonolysis of biogenic alkenes." Atmospheric Measurement Techniques 11, no. 1 (2018): 1–16. http://dx.doi.org/10.5194/amt-11-1-2018.

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Abstract. Reactions of the hydroxyl radical (OH) play a central role in the chemistry of the atmosphere, and measurements of its concentration can provide a rigorous test of our understanding of atmospheric oxidation. Several recent studies have shown large discrepancies between measured and modeled OH concentrations in forested areas impacted by emissions of biogenic volatile organic compounds (BVOCs), where modeled concentrations were significantly lower than measurements. A potential reason for some of these discrepancies involves interferences associated with the measurement of OH using th

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2

Wang, Wei, Zhaofeng Bai, Xiaoping Xie, Haiping Mei, and Wei Zhao. "Field experiment and analysis for free-space laser transmission characteristic in turbulent path based on MWIR and NIR." Modern Physics Letters B 34, no. 14 (2020): 2050148. http://dx.doi.org/10.1142/s0217984920501481.

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It is hard to achieve low bit error rate (BER) and high-quality signals in free-space optical (FSO) communication systems due to atmospheric link interference. For the sake of seeking solutions, we proposed an experimental scheme of free-space laser communication based on middle-wave infrared (MWIR) and near infrared (NIR) for obtaining atmospheric transmission characteristic in 1 km turbulence path. Compared with NIR waveband, MWIR-based scheme is more suitable for atmospheric FSO communication since it owns higher anti-interference ability for atmospheric attenuation, turbulence and skylight

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3

Mazur, Anna, Mariusz Kacprzak, Katarzyna Kubiak, Jan Kotlarz, and Krzysztof Skocki. "The influence of atmospheric light scattering on reflectance measurements during photogrammetric survey flights at low altitudes over forest areas." Forest Research Papers 79, no. 1 (2018): 59–68. http://dx.doi.org/10.2478/frp-2018-0007.

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Abstract In this article, we describe methods for the correction of multispectral aerial images by accounting for atmospheric interference. We also summarize the first correction results for images acquired at flight altitudes and evaluate the suitability of selected methods for the atmospheric correction of these images. Furthermore, processes and phenomena occurring in the atmosphere that potentially affect image quality and interfere with the electromagnetic radiation registered by the imaging sensors are discussed as well. The purpose of atmospheric correction is to reduce or eliminate atm

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4

Anna, Mazur, Kacprzak Mariusz, Kubiak Katarzyna, Kotlarz Jan, and Skocki Krzysztof. "The influence of atmospheric light scattering on reflectance measurements during photogrammetric survey flights at low altitudes over forest areas." Lesne Prace Badawcze / Forest Research Papers 79, no. 1 (2018): 59–68. https://doi.org/10.2478/frp-2020-0007.

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In this article, we describe methods for the correction of multispectral aerial images by accounting for atmospheric interference. We also summarize the first correction results for images acquired at flight altitudes and evaluate the suitability of selected methods for the atmospheric correction of these images. Furthermore, processes and phenomena occurring in the atmosphere that potentially affect image quality and interfere with the electromagnetic radiation registered by the imaging sensors are discussed as well. The purpose of atmospheric correction is to reduce or eliminate atmospheric

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5

Fittschen, Christa, Mohamad Al Ajami, Sebastien Batut, et al. "ROOOH: a missing piece of the puzzle for OH measurements in low-NO environments?" Atmospheric Chemistry and Physics 19, no. 1 (2019): 349–62. http://dx.doi.org/10.5194/acp-19-349-2019.

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Abstract. Field campaigns have been carried out with the FAGE (fluorescence assay by gas expansion) technique in remote biogenic environments in the last decade to quantify the in situ concentrations of OH, the main oxidant in the atmosphere. These data have revealed concentrations of OH radicals up to a factor of 10 higher than predicted by models, whereby the disagreement increases with decreasing NO concentration. This was interpreted as a major lack in our understanding of the chemistry of biogenic VOCs (volatile organic compounds), particularly isoprene, which are dominant in remote prist

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6

Constantinides, Antonios, Saam Najat, and Haris Haralambous. "Atmospheric Ducting Interference on DAB, DAB+ Radio in Eastern Mediterranean." Electronics 11, no. 24 (2022): 4183. http://dx.doi.org/10.3390/electronics11244183.

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A serious problem affecting the local radio industry in Cyprus is radio interference from the Middle East. This problem is especially acute on the highway along the coast during the summer months because interference degrades the sound quality in vehicle receivers due to chirping noise, hissing, fading and distortion. During the last decade the issue was explored by monitoring the field strength intensity of unwanted signals with respect to atmospheric conditions that excacerbate interference. According to the research outcomes presented in this paper, severe interference occurs due to “Tropos

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7

Wang, X., T. Wang, C. Yan, et al. "High concentrations of N<sub>2</sub>O<sub>5</sub> and NO<sub>3</sub> observed in daytime with a TD-CIMS: chemical interference or a real atmospheric phenomenon?" Atmospheric Measurement Techniques Discussions 6, no. 4 (2013): 7473–504. http://dx.doi.org/10.5194/amtd-6-7473-2013.

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Abstract. Dinitrogen pentoxide (N2O5) and the nitrate radical (NO3) play important roles in atmospheric chemistry, yet accurate measurements of their concentrations remain challenging. A thermal dissociation chemical ionization mass spectrometer (TD-CIMS) was deployed to an urban site in Hong Kong to measure the sum of N2O5 and NO3 in autumn 2010. To our surprise, very high concentrations of N2O5 + NO3 were frequently observed in daytime, with mixing ratios in the range of 200–1000 pptv. To investigate this unusual phenomenon, various interference tests and measurements with different instrume

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8

Alam, Mohammed S., Leigh R. Crilley, James D. Lee, et al. "Interference from alkenes in chemiluminescent NO<sub><i>x</i></sub> measurements." Atmospheric Measurement Techniques 13, no. 11 (2020): 5977–91. http://dx.doi.org/10.5194/amt-13-5977-2020.

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Abstract. Nitrogen oxides (NOx=NO+NO2) are critical intermediates in atmospheric chemistry and air pollution. NOx levels control the cycling and hence abundance of the primary atmospheric oxidants OH and NO3 and regulate the ozone production which results from the degradation of volatile organic compounds (VOCs) in the presence of sunlight. They are also atmospheric pollutants, and NO2 is commonly included in air quality objectives and regulations. NOx levels also affect the production of the nitrate component of secondary aerosol particles and other pollutants, such as the lachrymator peroxya

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9

Cho, Changmin, Andreas Hofzumahaus, Hendrik Fuchs, et al. "Characterization of a chemical modulation reactor (CMR) for the measurement of atmospheric concentrations of hydroxyl radicals with a laser-induced fluorescence instrument." Atmospheric Measurement Techniques 14, no. 3 (2021): 1851–77. http://dx.doi.org/10.5194/amt-14-1851-2021.

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Abstract. Precise and accurate hydroxyl radical (OH) measurements are essential to investigate mechanisms for oxidation and transformation of trace gases and processes leading to the formation of secondary pollutants like ozone (O3) in the troposphere. Laser-induced fluorescence (LIF) is a widely used technique for the measurement of ambient OH radicals and was used for the majority of field campaigns and chamber experiments. Recently, most LIF instruments in use for atmospheric measurements of OH radicals introduced chemical modulation to separate the ambient OH radical concentration from pos

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10

Wang, Shuanke, Zhenhui Du, Liming Yuan, et al. "Measurement of Atmospheric Dimethyl Sulfide with a Distributed Feedback Interband Cascade Laser." Sensors 18, no. 10 (2018): 3216. http://dx.doi.org/10.3390/s18103216.

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This paper presents a mid-infrared dimethyl sulfide (CH3SCH3, DMS) sensor based on tunable laser absorption spectroscopy with a distributed feedback interband cascade laser to measure DMS in the atmosphere. Different from previous work, in which only DMS was tested and under pure nitrogen conditions, we measured DMS mixed by common air to establish the actual atmospheric measurement environment. Moreover, we used tunable laser absorption spectroscopy with spectral fitting to enable multi-species (i.e., DMS, CH4, and H2O) measurement simultaneously. Meanwhile, we used empirical mode decompositi

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11

Wang, X., T. Wang, C. Yan, et al. "Large daytime signals of N<sub>2</sub>O<sub>5</sub> and NO<sub>3</sub> inferred at 62 amu in a TD-CIMS: chemical interference or a real atmospheric phenomenon?" Atmospheric Measurement Techniques 7, no. 1 (2014): 1–12. http://dx.doi.org/10.5194/amt-7-1-2014.

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Abstract. Dinitrogen pentoxide (N2O5) and the nitrate radical (NO3) play important roles in atmospheric chemistry, yet accurate measurements of their concentrations remain challenging. A thermal dissociation chemical ionization mass spectrometer (TD-CIMS) was deployed to an urban site in Hong Kong to measure the sum of N2O5 and NO3 in autumn 2010 based on the signals of NO3− at 62 amu which has also been adopted in previous studies reported in literature. To our surprise, very large signals of N2O5 + NO3 were frequently observed at 62 amu in the daytime, with equivalent N2O5 + NO3 mixing ratio

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12

Fuchs, Hendrik, Zhaofeng Tan, Andreas Hofzumahaus, et al. "Investigation of potential interferences in the detection of atmospheric RO<sub><i>x</i></sub> radicals by laser-induced fluorescence under dark conditions." Atmospheric Measurement Techniques 9, no. 4 (2016): 1431–47. http://dx.doi.org/10.5194/amt-9-1431-2016.

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Abstract. Direct detection of highly reactive, atmospheric hydroxyl radicals (OH) is widely accomplished by laser-induced fluorescence (LIF) instruments. The technique is also suitable for the indirect measurement of HO2 and RO2 peroxy radicals by chemical conversion to OH. It requires sampling of ambient air into a low-pressure cell, where OH fluorescence is detected after excitation by 308 nm laser radiation. Although the residence time of air inside the fluorescence cell is typically only on the order of milliseconds, there is potential that additional OH is internally produced, which would

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13

Fuchs, H., Z. Tan, A. Hofzumahaus, et al. "Investigation of potential interferences in the detection of atmospheric RO<sub><i>x</i></sub> radicals by laser-induced fluorescence under dark conditions." Atmospheric Measurement Techniques Discussions 8, no. 11 (2015): 12475–523. http://dx.doi.org/10.5194/amtd-8-12475-2015.

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Abstract. Direct detection of highly reactive, atmospheric hydroxyl radicals (OH) is widely accomplished by laser-induced fluorescence (LIF) instruments. The technique is also suitable for the indirect measurement of HO2 and RO2 peroxy radicals by chemical conversion to OH. It requires sampling of ambient air into a low pressure cell, where OH fluorescence is detected after excitation by 308 nm laser radiation. Although the residence time of air inside the fluorescence cell is typically only on the order of milliseconds, there is potential that additional OH is internally produced, which would

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14

Frech, Michael, Cornelius Hald, Maximilian Schaper, Bertram Lange, and Benjamin Rohrdantz. "Assessing and mitigating the radar–radar interference in the German C-band weather radar network." Atmospheric Measurement Techniques 16, no. 2 (2023): 295–309. http://dx.doi.org/10.5194/amt-16-295-2023.

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Abstract. The national German weather radar network operates in C-band between 5.6 and 5.65 GHz. In a radar network, individual transmit frequencies have to be chosen such that radar–radar-induced interferences are avoided. In a unique experiment the Hohenpeißenberg research radar and five operational systems from the radar network were used to characterize radar–radar-induced interferences as a function of the radar frequency. The results allow assessment of the possibility of adding additional C-band radars with magnetron transmitters into the existing network. Based on the experiment, at le

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15

Muralitharan, Rasendram, Upul Jayasinghe, Roshan G. Ragel, and Gyu Myoung Lee. "Machine Learning and Deep Learning-Based Atmospheric Duct Interference Detection and Mitigation in TD-LTE Networks." Future Internet 17, no. 6 (2025): 237. https://doi.org/10.3390/fi17060237.

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The variations in the atmospheric refractivity in the lower atmosphere create a natural phenomenon known as atmospheric ducts. The atmospheric ducts allow radio signals to travel long distances. This can adversely affect telecommunication systems, as cells with similar frequencies can interfere with each other due to frequency reuse, which is intended to optimize resource allocation. Thus, the downlink signals of one base station will travel a long distance via the atmospheric duct and interfere with the uplink signals of another base station. This scenario is known as atmospheric duct interfe

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16

Woodward-Massey, Robert, Eloise J. Slater, Jake Alen, et al. "Implementation of a chemical background method for atmospheric OH measurements by laser-induced fluorescence: characterisation and observations from the UK and China." Atmospheric Measurement Techniques 13, no. 6 (2020): 3119–46. http://dx.doi.org/10.5194/amt-13-3119-2020.

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Abstract. Hydroxyl (OH) and hydroperoxy (HO2) radicals are central to the understanding of atmospheric chemistry. Owing to their short lifetimes, these species are frequently used to test the accuracy of model predictions and their underlying chemical mechanisms. In forested environments, laser-induced fluorescence–fluorescence assay by gas expansion (LIF–FAGE) measurements of OH have often shown substantial disagreement with model predictions, suggesting the presence of unknown OH sources in such environments. However, it is also possible that the measurements have been affected by instrument

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17

Reed, Chris, Mathew J. Evans, Piero Di Carlo, James D. Lee, and Lucy J. Carpenter. "Interferences in photolytic NO<sub>2</sub> measurements: explanation for an apparent missing oxidant?" Atmospheric Chemistry and Physics 16, no. 7 (2016): 4707–24. http://dx.doi.org/10.5194/acp-16-4707-2016.

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Abstract. Measurement of NO2 at low concentrations (tens of ppts) is non-trivial. A variety of techniques exist, with the conversion of NO2 into NO followed by chemiluminescent detection of NO being prevalent. Historically this conversion has used a catalytic approach (molybdenum); however, this has been plagued with interferences. More recently, photolytic conversion based on UV-LED irradiation of a reaction cell has been used. Although this appears to be robust there have been a range of observations in low-NOx environments which have measured higher NO2 concentrations than might be expected

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18

Wu, Yan Jun, Gang Fu, and Wen Jian Geng. "Interference Suppression of VLF Communications in Atmospheric Noise." Advanced Materials Research 989-994 (July 2014): 4005–8. http://dx.doi.org/10.4028/www.scientific.net/amr.989-994.4005.

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This paper focuses on the weak signal reception and atmospheric noise suppression in VLF Chirp spread spectrum communication system. Due to interference of atmospheric noise generated by lightning phenomena, it makes the chirp signal detection under low SNR condition becoming more difficult. Therefore, we select alpha stable distribution noise model to generate noise to simulate the real atmospheric noise. Then, we introduced a new technique of Chirp Spread Spectrum (CSS) communication based on Fractional Fourier Transform (FRFT). Finally, we study a nonlinear processing interference suppressi

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19

Ostashev, Vladimir E., Daniel J. Breton, and D. Keith Wilson. "Interference of the direct and ground-reflected waves in the atmosphere with volumetric scattering." Journal of the Acoustical Society of America 156, no. 1 (2024): 107–18. http://dx.doi.org/10.1121/10.0026452.

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The interference of the direct and ground-reflected sound waves is significantly affected by volumetric scattering in the atmosphere, such as scattering by turbulence and forest. In the present article, the existing theory describing this interference is generalized to three somewhat independent but equally important cases. First, the attenuation of the direct and ground-reflected waves caused by backscattering is addressed. Second, the existing theory is extended for statistically quasi-homogeneous turbulence in which the variances and length scales of the temperature and wind velocity fluctu

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20

Nault, B. A., C. Garland, S. E. Pusede, et al. "Measurements of CH<sub>3</sub>O<sub>2</sub>NO<sub>2</sub> in the upper troposphere." Atmospheric Measurement Techniques 8, no. 2 (2015): 987–97. http://dx.doi.org/10.5194/amt-8-987-2015.

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Abstract. Methyl peroxy nitrate (CH3O2NO2) is a non-acyl peroxy nitrate that is important for photochemistry at low temperatures characteristic of the upper troposphere. We report the first measurements of CH3O2NO2, which we achieved through a new aircraft inlet configuration, combined with thermal-dissociation laser-induced fluorescence (TD-LIF) detection of NO2, and describe the accuracy, specificity, and interferences to CH3O2NO2 measurements. CH3O2NO2 is predicted to be a ubiquitous interference to upper-tropospheric NO2 measurements. We describe an experimental strategy for obtaining NO2

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21

Chainey, M., J. Hearn, and M. C. Wilkinson. "Interference from atmospheric carbon dioxide in latex titrations." Journal of Colloid and Interface Science 117, no. 2 (1987): 477–84. http://dx.doi.org/10.1016/0021-9797(87)90408-5.

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22

Baasandorj, M., D. B. Millet, L. Hu, D. Mitroo, and B. J. Williams. "Measuring acetic and formic acid by proton transfer reaction-mass spectrometry: sensitivity, humidity dependence, and quantifying interferences." Atmospheric Measurement Techniques Discussions 7, no. 10 (2014): 10883–930. http://dx.doi.org/10.5194/amtd-7-10883-2014.

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Abstract. We present a detailed investigation of the factors governing the quantification of formic acid (FA), acetic acid (AA) and their relevant mass analogues by proton transfer reaction-mass spectrometry (PTR-MS), assess the underlying fragmentation pathways and humidity dependencies, and present a new method for separating FA and AA from their main isobaric interferences. PTR-MS sensitivities towards glycolaldehyde, ethyl acetate and peroxyacetic acid at m/z 61 are comparable to that for AA; when present, these species will interfere with ambient AA measurements by PTR-MS. Likewise, when

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23

Zheng, Junbao, Chenke Xu, Wei Zhang, and Xu Yang. "Single Image Dehazing Using Global Illumination Compensation." Sensors 22, no. 11 (2022): 4169. http://dx.doi.org/10.3390/s22114169.

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The existing dehazing algorithms hardly consider background interference in the process of estimating the atmospheric illumination value and transmittance, resulting in an unsatisfactory dehazing effect. In order to solve the problem, this paper proposes a novel global illumination compensation-based image-dehazing algorithm (GIC). The GIC method compensates for the intensity of light scattered when light passes through atmospheric particles such as fog. Firstly, the illumination compensation was accomplished in the CIELab color space using the shading partition enhancement mechanism. Secondly

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24

Stiperski, Ivana, and Vanda Grubišić. "Trapped Lee Wave Interference in the Presence of Surface Friction." Journal of the Atmospheric Sciences 68, no. 4 (2011): 918–36. http://dx.doi.org/10.1175/2010jas3495.1.

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Abstract Trapped lee wave interference over double bell-shaped obstacles in the presence of surface friction is examined. Idealized high-resolution numerical experiments with the nonhydrostatic Coupled Ocean–Atmosphere Mesoscale Prediction System (COAMPS) are performed to examine the influence of a frictional boundary layer and nonlinearity on wave interference and the impact of interference on wave-induced boundary layer separation and the formation of rotors. The appearance of constructive and destructive interference, controlled by the ratio of the ridge separation distance to the intrinsic

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Sun, Y. W., C. Liu, K. L. Chan, et al. "Stack emission monitoring using non-dispersive infrared with optimized nonlinear absorption cross-interference correction algorithm." Atmospheric Measurement Techniques Discussions 6, no. 1 (2013): 2009–53. http://dx.doi.org/10.5194/amtd-6-2009-2013.

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Abstract. In this paper, we present an optimized analysis algorithm for non-dispersive infrared (NDIR) to monitor stack emissions. The newly developed analysis algorithm simultaneously compensates for nonlinear absorption and cross-interference between different gases. We present a mathematical derivation for the measurement error caused by variations in interference coefficients when nonlinear absorption occurs. The optimized algorithm is derived from a classical one and uses interference functions to quantify cross-interference. The interference functions vary proportionally with the nonline

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26

Crane, Patrick C., and Lynne A. Hillenbrand. "Estimating Harmful Levels of Radio-Frequency Radiation." International Astronomical Union Colloquium 112 (1991): 258–66. http://dx.doi.org/10.1017/s0252921100004085.

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Determining whether a particular radio transmitter will produce harmful levels of radio-frequency radiation at a location of interest (the “receiver,” be it a nearby home or a distant radio telescope), has two steps. The first is to determine which standard for harm applies: Section II reviews those for human exposure, for interference with electronic devices, for interference with optical and infrared astronomy, and for interference with radio astronomy.The second step is to estimate the propagation losses between the transmitter and the “receiver.” Many factors, several highly time variable,

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27

Wang, Siyu, Xiuguo Zou, and Xinfa Qiu. "Research on Atmospheric Visibility Grading based on Remote Sensing Data." International Journal of Sciences Volume 9, no. 2020-03 (2020): 44–48. https://doi.org/10.5281/zenodo.3980061.

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Theoretical research on atmospheric radiative transfer shows that aerosol optical depth (AOD) is positively correlated with atmospheric particulate matter (PM) concentration. Using satellite remote sensing data to retrieve the AOD, and monitor and analyze the atmospheric visibility and atmospheric pollution are gradually being widely applied. In this research, the data of moderate resolution imaging spectroradiometer (MODIS) is used for analysis. Firstly, geometric correction, data quality improvement, image stitching, vector cropping, and masking are performed to process the data. Then, the c

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Sun, Y. W., C. Liu, K. L. Chan, et al. "Stack emission monitoring using non-dispersive infrared spectroscopy with an optimized nonlinear absorption cross interference correction algorithm." Atmospheric Measurement Techniques 6, no. 8 (2013): 1993–2005. http://dx.doi.org/10.5194/amt-6-1993-2013.

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Abstract. In this paper, we present an optimized analysis algorithm for non-dispersive infrared (NDIR) to in situ monitor stack emissions. The proposed algorithm simultaneously compensates for nonlinear absorption and cross interference among different gases. We present a mathematical derivation for the measurement error caused by variations in interference coefficients when nonlinear absorption occurs. The proposed algorithm is derived from a classical one and uses interference functions to quantify cross interference. The interference functions vary proportionally with the nonlinear absorpti

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29

Umar, Fayaz Marazi, and Raj Rashmi. "Experimental Analysis of Optical Coherent Communication System in India Through Atmospheric Turbulence." International Journal of Trend in Scientific Research and Development 2, no. 6 (2018): 445–51. https://doi.org/10.31142/ijtsrd18291.

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Free Space Optical FSO communication is the transmission of optical signals through the atmosphere. This technology promises high wireless data rates, highly secured transmission, license free operation and immunity to electro magnetic interference. However, FSO reliability is decreased considerably by atmospheric conditions. In this paper, we characterize the Ghanaian atmospheric channel for FSO communication based on visibility statistic. We use Kruse's model to estimate atmospheric attenuation in India. The probability of outage on an FSO link is computed to determine the availability o

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Reed, C., M. J. Evans, P. Di Carlo, J. D. Lee, and L. J. Carpenter. "Interferences in photolytic NO<sub>2</sub> measurements: explanation for an apparent missing oxidant?" Atmospheric Chemistry and Physics Discussions 15, no. 20 (2015): 28699–747. http://dx.doi.org/10.5194/acpd-15-28699-2015.

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Abstract. Measurement of NO2 at low concentrations is non-trivial. A variety of techniques exist, with the conversion of NO2 into NO followed by chemiluminescent detection of NO being prevalent. Historically this conversion has used a catalytic approach (Molybdenum); however this has been plagued with interferences. More recently, photolytic conversion based on UV-LED irradiation of a reaction cell has been used. Although this appears to be robust there have been a range of observations in low NOx environments which have measured higher NO2 concentrations than might be expected from steady sta

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31

Box, F. "Utilization of Atmospheric Transmission Losses for Interference-Resistant Communications." IEEE Transactions on Communications 34, no. 10 (1986): 1009–15. http://dx.doi.org/10.1109/tcom.1986.1096448.

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Zhang, Chunmin, Baochang Zhao, Bin Xiangli, and Yingcai Li. "Interference image spectroscopy for upper atmospheric wind field measurement." Optik 117, no. 6 (2006): 265–70. http://dx.doi.org/10.1016/j.ijleo.2005.08.022.

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Ren, Xinrong, Hartwig Harder, Monica Martinez, et al. "Interference Testing for Atmospheric HOxMeasurements by Laser-induced Fluorescence." Journal of Atmospheric Chemistry 47, no. 2 (2004): 169–90. http://dx.doi.org/10.1023/b:joch.0000021037.46866.81.

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Jha, K. K., A. K. Verma, and R. K. Tewari. "Atmospheric Effects and Interference in Point to Point Communication." IETE Journal of Research 35, no. 6 (1989): 317–22. http://dx.doi.org/10.1080/03772063.1989.11436836.

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Sun, Youwen, Cheng Liu, Pinhua Xie, et al. "Industrial SO<sub>2</sub> emission monitoring through a portable multichannel gas analyzer with an optimized retrieval algorithm." Atmospheric Measurement Techniques 9, no. 3 (2016): 1167–80. http://dx.doi.org/10.5194/amt-9-1167-2016.

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Abstract. SO2 variability over a large concentration range and interferences from other gases have been major limitations in industrial SO2 emission monitoring. This study demonstrates accurate industrial SO2 emission monitoring through a portable multichannel gas analyzer with an optimized retrieval algorithm. The proposed analyzer features a large dynamic measurement range and correction of interferences from other coexisting infrared absorbers such as NO, CO, CO2, NO2, CH4, HC, N2O, and H2O. The multichannel gas analyzer measures 11 different wavelength channels simultaneously to correct se

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Keehan, Natalie I., Bellamy Brownwood, Andrey Marsavin, Douglas A. Day, and Juliane L. Fry. "A thermal-dissociation–cavity ring-down spectrometer (TD-CRDS) for the detection of organic nitrates in gas and particle phases." Atmospheric Measurement Techniques 13, no. 11 (2020): 6255–69. http://dx.doi.org/10.5194/amt-13-6255-2020.

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Abstract. A thermal-dissociation–cavity ring-down spectrometer (TD-CRDS) was developed to measure NO2, peroxy nitrates (PNs), alkyl nitrates (ANs), and HNO3 in the gas and particle phase, built using a commercial Los Gatos Research NO2 analyzer. The detection limit of the TD-CRDS is 0.66 ppb for ANs, PNs, and HNO3 and 0.48 ppb for NO2. For all four classes of NOy, the time resolution for separate gas and particle measurements is 8 min, and for total gas + particle measurements it is 3 min. The accuracy of the TD-CRDS was tested by comparison of NO2 measurements with a chemiluminescent NOx moni

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Raupach, Sebastian M. F. "Observation of Interference Patterns in Reconstructed Digital Holograms of Atmospheric Ice Crystals." Journal of Atmospheric and Oceanic Technology 26, no. 12 (2009): 2691–93. http://dx.doi.org/10.1175/2009jtecha1315.1.

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Abstract The observation of interference patterns in reconstructed digital holograms of natural ice crystals is reported. It is suggested that an investigation of the interference fringes’ origin will yield a new application of holography in atmospheric sciences by revealing information on otherwise hardly accessible properties of the crystals.

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Sussmann, R., and T. Borsdorff. "Interference errors in infrared remote sounding of the atmosphere." Atmospheric Chemistry and Physics Discussions 6, no. 6 (2006): 13027–73. http://dx.doi.org/10.5194/acpd-6-13027-2006.

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Abstract. More and more profiles of atmospheric state parameters are being retrieved from remote soundings in the infrared spectral domain. Classical error analysis, which was originally applied to microwave sounding systems, distinguishes between "smoothing errors," "forward model errors," "forward model parameter errors," and "retrieval noise errors". We show that for infrared soundings "interference errors", which have not been treated up to now, can be significant. Interference errors originate from "interfering species" that introduce signatures into the spectral measurement which overlap

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Turnipseed, Andrew A., Peter C. Andersen, Craig J. Williford, Christine A. Ennis, and John W. Birks. "Use of a heated graphite scrubber as a means of reducing interferences in UV-absorbance measurements of atmospheric ozone." Atmospheric Measurement Techniques 10, no. 6 (2017): 2253–69. http://dx.doi.org/10.5194/amt-10-2253-2017.

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Abstract. A new solid-phase scrubber for use in conventional ozone (O3) photometers was investigated as a means of reducing interferences from other UV-absorbing species and water vapor. It was found that when heated to 100–130 °C, a tubular graphite scrubber efficiently removed up to 500 ppb ozone and ozone monitors using the heated graphite scrubber were found to be less susceptible to interferences from water vapor, mercury vapor, and aromatic volatile organic compounds (VOCs) compared to conventional metal oxide scrubbers. Ambient measurements from a graphite scrubber-equipped photometer a

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Poguntke, Tim, and Christoph Ritter. "Influence of electromagnetic interference on the evaluation of lidar-derived aerosol properties from Ny-Ålesund, Svalbard." Atmospheric Measurement Techniques 16, no. 17 (2023): 4009–14. http://dx.doi.org/10.5194/amt-16-4009-2023.

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Abstract. Possible interference sources for our aerosol lidar setup with transient recorders have been assessed. This was done by two methods: a spectrum analysis of the lidar signals in order to detect radio-frequency interference and measurements of the electromagnetic interference caused by the laser power supply. We found disturbances in the analog channels of the transient recorders, presumably caused by aging effects of our older recorders. An easy method on how the signal-to-noise ratio can be improved retrospectively is presented. We also show that the usage of two-way radio at our loc

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Evsikov, K. S. "The legal regime of quantum communication lines in free space." Courier of Kutafin Moscow State Law University (MSAL)), no. 10 (December 6, 2024): 117–25. https://doi.org/10.17803/2311-5998.2024.122.10.117-125.

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The article discusses the features of regulating communication in free space as a key technology for quantum communication. An analysis of domestic and foreign experience in regulating this technology has been conducted, which has made it possible to highlight the advantages and disadvantages of its legal regime compared to other types of communication. It has been proved that communication via free space has advantages over wired communication since it does not require using other people’s land or establishing an easement as there is no need for a wire to create an atmospheric communication c

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Lew, Michelle M., Sebastien Dusanter, and Philip S. Stevens. "Measurement of interferences associated with the detection of the hydroperoxy radical in the atmosphere using laser-induced fluorescence." Atmospheric Measurement Techniques 11, no. 1 (2018): 95–109. http://dx.doi.org/10.5194/amt-11-95-2018.

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Abstract. One technique used to measure concentrations of the hydroperoxy radical (HO2) in the atmosphere involves chemically converting it to OH by addition of NO and subsequent detection of OH. However, some organic peroxy radicals (RO2) can also be rapidly converted to HO2 (and subsequently OH) in the presence of NO, interfering with measurements of ambient HO2 radical concentrations. This interference must be characterized for each instrument to determine to what extent various RO2 radicals interfere with measurements of HO2 and to assess the impact of this interference on past measurement

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Goss, Michael, Steven B. Feldstein, and Sukyoung Lee. "Stationary Wave Interference and Its Relation to Tropical Convection and Arctic Warming." Journal of Climate 29, no. 4 (2016): 1369–89. http://dx.doi.org/10.1175/jcli-d-15-0267.1.

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Abstract The interference between transient eddies and climatological stationary eddies in the Northern Hemisphere is investigated. The amplitude and sign of the interference is represented by the stationary wave index (SWI), which is calculated by projecting the daily 300-hPa streamfunction anomaly field onto the 300-hPa climatological stationary wave. ERA-Interim data for the years 1979 to 2013 are used. The amplitude of the interference peaks during boreal winter. The evolution of outgoing longwave radiation, Arctic temperature, 300-hPa streamfunction, 10-hPa zonal wind, Arctic sea ice conc

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Gregoris, Elena, Gaia Gallo, Beatrice Rosso, Rossano Piazza, Fabiana Corami, and Andrea Gambaro. "Microplastics analysis: can we carry out a polymeric characterisation of atmospheric aerosol using direct inlet Py-GC/MS?" Journal of Analytical and Applied Pyrolysis 170 (February 3, 2023): 105903. https://doi.org/10.1016/j.jaap.2023.105903.

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POST-PRINT VERSION Microplastics are emerging pollutants of great concern since they are widely distributed in the environment. While the occurrence of microplastics was studied in marine and freshwaters, sediments, soil, and different classes of organisms, the atmosphere was somewhat understudied, although it can be the most significant transport pathway from mid to high latitudes. This work is one of the first studies testing the possible application of pyrolysis gas chromatography-mass spectrometry (Py-GC/MS) for detecting polymers in atmospheric aerosol. It explore

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Henderson, Stephanie A., Daniel J. Vimont, and Matthew Newman. "The Critical Role of Non-Normality in Partitioning Tropical and Extratropical Contributions to PNA Growth." Journal of Climate 33, no. 14 (2020): 6273–95. http://dx.doi.org/10.1175/jcli-d-19-0555.1.

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AbstractThe Pacific–North American (PNA) teleconnection pattern has been linked both to tropical phenomena, including the Madden–Julian oscillation (MJO) and El Niño–Southern Oscillation (ENSO), and to internal extratropical processes, including interactions with the zonally varying basic state and synoptic eddies. Many questions remain, however, concerning how these various relationships act, both separately and together, to yield observed PNA variability. Using linear inverse modeling (LIM), this study finds that the development and amplification of PNA anomalies largely results from the int

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Sun, Y. W., C. Liu, P. H. Xie, et al. "Industrial SO<sub>2</sub> emissions monitoring using a portable multi-channel gas analyzer with an optimized retrieval algorithm." Atmospheric Measurement Techniques Discussions 8, no. 12 (2015): 13331–75. http://dx.doi.org/10.5194/amtd-8-13331-2015.

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Abstract. In this paper, we demonstrate achieving accurate industrial SO2 emissions monitoring using a portable multi-channel gas analyzer with an optimized retrieval algorithm. The introduced analyzer features with large dynamic measurement range and correction of interferences from other co-existing infrared absorbers, e.g., NO, CO, CO2, NO2, CH4, HC, N2O and H2O. Both effects have been the major limitations of industrial SO2 emissions monitoring. The multi-channel gas analyzer measures 11 different wavelength channels simultaneously in order to achieve correction of several major problems o

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Nott, G. J., T. J. Duck, J. G. Doyle, et al. "A Remotely Operated Lidar for Aerosol, Temperature, and Water Vapor Profiling in the High Arctic." Journal of Atmospheric and Oceanic Technology 29, no. 2 (2012): 221–34. http://dx.doi.org/10.1175/jtech-d-11-00046.1.

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Abstract A Rayleigh–Mie–Raman lidar has been installed and is operating in the Polar Environment Atmospheric Research Laboratory at Eureka in the High Arctic (79°59′N, 85°56′W) as part of the Canadian Network for the Detection of Atmospheric Change. The lidar operates in both the visible and ultraviolet and measures aerosol backscatter and extinction coefficients, depolarization ratio, tropospheric temperature, and water vapor mixing ratio. Variable field of view, aperture, and filtering allow fine-tuning of the instrument for different atmospheric conditions. Because of the remote location, o

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Peres, O. L. G., and A. Yu Smirnov. "Atmospheric neutrinos: LMA oscillations, Ue3 induced interference and CP-violation." Nuclear Physics B 680, no. 1-3 (2004): 479–509. http://dx.doi.org/10.1016/j.nuclphysb.2003.12.017.

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Xu, Miaomiao, Xiongzhu Bu, Zilu He, and Wei Han. "Atmospheric turbulence interference compensation for missile-borne infrared attitude measurement." Infrared Physics & Technology 97 (March 2019): 69–73. http://dx.doi.org/10.1016/j.infrared.2018.12.022.

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Ling, Liuyi, Weilong Li, and Qi Zhang. "A pptv Level Incoherent Broadband Cavity-Enhanced Absorption Spectrometer for the Measurement of Atmospheric NO3." Atmosphere 14, no. 3 (2023): 543. http://dx.doi.org/10.3390/atmos14030543.

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NO3 radicals are one of the very important trace gases in the atmosphere. Accurate measurements of NO3 can provide data support for atmospheric chemistry research. Due to the extremely low content of NO3 radicals in the atmosphere, it is a challenge to accurately detect it. In this paper, an incoherent broadband cavity-enhanced absorption spectrometer (IBBCEAS) with high sensitivity is developed for measuring atmospheric NO3. The IBBCEAS absorption spectra of NO3 in the range of 648–674 nm are measured. The concentration of NO3 is retrieved by fitting the absorption cross-section of NO3 to the

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