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Ravi M. Varma, Ph.D. - Publications

Affiliations: 
2003 University of Nevada, Reno, Reno, NV, United States 
Area:
Atmospheric Science Physics, Environmental Sciences
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30 high-probability publications. We are testing a new system for linking publications to authors. You can help! If you notice any inaccuracies, please sign in and mark papers as correct or incorrect matches. If you identify any major omissions or other inaccuracies in the publication list, please let us know.

Year Citation  Score
2022 Wang M, Varma R, Venables DS, Zhou W, Chen J. A Demonstration of Broadband Cavity-Enhanced Absorption Spectroscopy at Deep-Ultraviolet Wavelengths: Application to Sensitive Real-Time Detection of the Aromatic Pollutants Benzene, Toluene, and Xylene. Analytical Chemistry. 94: 4286-4293. PMID 35245018 DOI: 10.1021/acs.analchem.1c04940  0.403
2021 John S, Wang M, Chen J, Pakkatil A, Du Y, Zhang J, Ramachandran A, Saseendran A, Thomas AP, Viswanathan D, Mazzoleni C, Varma R. A broadband cavity-enhanced spectrometer for atmospheric aerosol light extinction measurements Aerosol Science and Technology. 55: 1264-1276. DOI: 10.1080/02786826.2021.1944604  0.373
2021 Arun R, Anoop P, John S, Chen J, Deepa V, Varma R. Atmospheric Aerosol Scattering Coefficients in a Broad Visible Spectral Region Aerosol Science and Engineering. 5: 373-382. DOI: 10.1007/s41810-021-00101-w  0.301
2020 Saseendran A, Mathai S, Joshi S, Pakkattil A, Capek T, Kinney G, Mazzoleni C, Varma R. Dual-cavity spectrometer for monitoring broadband light extinction by atmospheric aerosols Aerosol Science and Technology. 54: 1183-1196. DOI: 10.1080/02786826.2020.1763249  0.622
2020 Chen J, Wang D, Ramachandran A, Chandran S, Li M, Varma R. An open-path dual-beam laser spectrometer for path-integrated urban NO2 sensing Sensors and Actuators a-Physical. 315: 112208. DOI: 10.1016/J.Sna.2020.112208  0.465
2020 Pakkattil A, Muhsin M, John S, Saseendran A, Thomas AP, Deepa, Varma R. Trace pollutant fluctuations observed in Calicut city, India, during the annular solar eclipse on 26 December 2019 Atmospheric Pollution Research. DOI: 10.1016/J.Apr.2020.07.026  0.315
2019 Suhail K, Arun R, Joshi S, Shebin J, Aiswarya S, Anoop P, Deepa V, Varma R. Observation of nocturnal NO 3 during vehicular activities in the medium sized city of Calicut in coastal India Atmospheric Measurement Techniques Discussions. 1-15. DOI: 10.5194/Amt-2019-6  0.42
2018 Suhail K, George M, Chandran S, Varma R, Venables DS, Wang M, Chen J. Open path incoherent broadband cavity-enhanced measurements of NO radical and aerosol extinction in the North China Plain. Spectrochimica Acta. Part a, Molecular and Biomolecular Spectroscopy. 208: 24-31. PMID 30286400 DOI: 10.1016/J.Saa.2018.09.023  0.48
2018 Prakash N, Ramachandran A, Varma R, Chen J, Mazzoleni C, Du K. Near-infrared incoherent broadband cavity enhanced absorption spectroscopy (NIR-IBBCEAS) for detection and quantification of natural gas components. The Analyst. PMID 29951647 DOI: 10.1039/C8An00819A  0.612
2017 Chandran S, Puthukkudy A, Varma R. Dual-wavelength dual-cavity spectrometer for NO 2 detection in the presence of aerosol interference Applied Physics B. 123: 213. DOI: 10.1007/S00340-017-6789-5  0.496
2016 Issac SI, Suhail K, Arun R, Varma R. Scattering cross-sections of common calibration gases measured by IBBCEAS technique Results in Physics. 6: 84-85. DOI: 10.1016/J.Rinp.2016.01.014  0.434
2015 Chandran S, Varma R. Near infrared cavity enhanced absorption spectra of atmospherically relevant ether-1, 4-Dioxane. Spectrochimica Acta. Part a, Molecular and Biomolecular Spectroscopy. 153: 704-708. PMID 26474242 DOI: 10.1016/J.Saa.2015.09.030  0.391
2013 Varma RM, Ball SM, Brauers T, Dorn HP, Heitmann U, Jones RL, Platt U, Pöhler D, Ruth AA, Shillings AJL, Thieser J, Wahner A, Venables DS. Light extinction by secondary organic aerosol: An intercomparison of three broadband cavity spectrometers Atmospheric Measurement Techniques. 6: 3115-3130. DOI: 10.5194/Amt-6-3115-2013  0.495
2013 Dorn HP, Apodaca RL, Ball SM, Brauers T, Brown SS, Crowley JN, Dubé WP, Fuchs H, Häseler R, Heitmann U, Jones RL, Kiendler-Scharr A, Labazan I, Langridge JM, Meinen J, ... ... Varma R, et al. Intercomparison of NO3 radical detection instruments in the atmosphere simulation chamber SAPHIR Atmospheric Measurement Techniques. 6: 1111-1140. DOI: 10.5194/Amt-6-1111-2013  0.428
2013 Du K, Shi P, Rood MJ, Wang K, Wang Y, Varma RM. Digital Optical Method to quantify the visual opacity of fugitive plumes Atmospheric Environment. 77: 983-989. DOI: 10.1016/J.Atmosenv.2013.06.017  0.38
2012 O'Leary DM, Ruth AA, Dixneuf S, Orphal J, Varma R. The near infrared cavity-enhanced absorption spectrum of methyl cyanide Journal of Quantitative Spectroscopy and Radiative Transfer. 113: 1138-1147. DOI: 10.1016/J.Jqsrt.2012.02.022  0.555
2011 Du K, Rood MJ, Welton EJ, Varma RM, Hashmonay RA, Kim BJ, Kemme MR. Optical remote sensing to quantify fugitive particulate mass emissions from stationary short-term and mobile continuous sources: part I. Method and examples. Environmental Science & Technology. 45: 658-65. PMID 21142142 DOI: 10.1021/Es101904Q  0.428
2011 Chandran PMS, Krishnakumar CP, Yuen W, Rood MJ, Varma R. An open-path laser transmissometer for atmospheric extinction measurements Aip Conference Proceedings. 1391: 288-290. DOI: 10.1063/1.3646865  0.308
2010 Fuchs H, Ball SM, Bohn B, Brauers T, Cohen RC, Dorn HP, Dubé WP, Fry JL, Häseler R, Heitmann U, Jones RL, Kleffmann J, Mentel TF, Müsgen P, Rohrer F, ... ... Varma RM, et al. Intercomparison of measurements of NO2 concentrations in the atmosphere simulation chamber SAPHIR during the NO3Comp campaign Atmospheric Measurement Techniques. 3: 21-37. DOI: 10.5194/Amt-3-21-2010  0.45
2009 Ro KS, Johnson MH, Varma RM, Hashmonay RA, Hunt P. Measurement of greenhouse gas emissions from agricultural sites using open-path optical remote sensing method. Journal of Environmental Science and Health. Part a, Toxic/Hazardous Substances & Environmental Engineering. 44: 1011-8. PMID 19827493 DOI: 10.1080/10934520902996963  0.393
2009 Varma RM, Venables DS, Ruth AA, Heitmann U, Schlosser E, Dixneuf S. Long optical cavities for open-path monitoring of atmospheric trace gases and aerosol extinction. Applied Optics. 48: B159-71. PMID 19183574 DOI: 10.1364/Ao.48.00B159  0.508
2009 Dixneuf S, Ruth AA, Vaughan S, Varma RM, Orphal J. The time dependence of molecular iodine emission from Laminaria digitata Atmospheric Chemistry and Physics. 9: 823-829. DOI: 10.5194/Acp-9-823-2009  0.504
2008 Varma RM, Hashmonay RA, Du K, Rood MJ, Kim BJ, Kemme MR. A novel method to quantify fugitive dust emissions using optical remote sensing Advanced Environmental Monitoring. 143-154. DOI: 10.1007/978-1-4020-6364-0_11  0.347
2005 Moosmüller H, Varma R, Arnott WP, Kuhns HD, Etyemezian V, Gillies JA. Scattering cross-section emission factors for visibility and radiative transfer applications: military vehicles traveling on unpaved roads. Journal of the Air & Waste Management Association (1995). 55: 1743-50. PMID 16350371 DOI: 10.1080/10473289.2005.10464763  0.577
2005 Thoma ED, Shores RC, Thompson EL, Harris DB, Thorneloe SA, Varma RM, Hashmonay RA, Modrak MT, Natschke DF, Gamble HA. Open-path tunable diode laser absorption spectroscopy for acquisition of fugitive emission flux data. Journal of the Air & Waste Management Association (1995). 55: 658-68. PMID 15991674 DOI: 10.1080/10473289.2005.10464654  0.437
2005 Moosmüller H, Varma R, Arnott WP. Cavity ring-down and cavity-enhanced detection techniques for the measurement of aerosol extinction Aerosol Science and Technology. 39: 30-39. DOI: 10.1080/027868290903880  0.616
2005 Sheridan PJ, Patrick Arnott W, Ogren JA, Andrews E, Atkinson DB, Covert DS, Moosmüller H, Petzold A, Schmid B, Strawa AW, Varma R, Virkkula A. The reno aerosol optics study: An evaluation of aerosol absorption measurement methods Aerosol Science and Technology. 39: 1-16. DOI: 10.1080/027868290901891  0.648
2004 Varma RM, Moosmüller H, Arnott WP, Kuhns HD, Etyemezian V, Gillies JA. Emission factors of scattering cross section for visibility impairment from fugitive dust sources Regional and Global Perspectives On Haze. 134: 125-137.  0.36
2004 Varma RM, Hashmonay RA, Bolch MA, Gamble HA, Kim BJ. Remote sensing measurements of light extinction by fugitive particulate matters used as obscurants for a wide spectral range Proceedings of the Air and Waste Management Association's Annual Meeting and Exhibition. 2579-2590.  0.384
2003 Varma R, Moosmüller H, Arnott WP. Toward an ideal integrating nephelometer. Optics Letters. 28: 1007-9. PMID 12836761 DOI: 10.1364/Ol.28.001007  0.549
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