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Browsing by Author "Particle Instruments and diagnostics"
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Classifying atmospheric ice crystals by spatial light scattering
Kaye, Paul H.; Hirst, Edwin; Greenaway, Richard; Ulanowski, Zbigniew; Hesse, Evelyn; DeMott, P.; Saunders, C.; Connolly, P. (2008)We describe preliminary results from an optical scattering instrument designed to assess the shapes and sizes of microscopic atmospheric cloud particles, especially the smallest ice crystals, that can profoundly affect ... -
Cloud characterization using a particle-counter dropsonde
Ulanowski, Zbigniew; Kaye, Paul; Hirst, Edwin; Wieser, Andreas; Stanley, Warren (2015-04-12)Routine meteorological data is obtained in the atmosphere using disposable radiosondes, giving temperature, pressure, humidity and wind speed. Additional measurements are obtained from dropsondes, released from research ... -
Co-ordinated Airborne Studies in the Tropics (CAST)
Harris, N. R. P.; Carpenter, L. J.; Lee, J. D.; Vaughan, G.; Filus, M. T.; Jones, R. L.; OuYang, B.; Pyle, J. A.; Robinson, A. D.; Andrews, S. J.; Lewis, A. C.; Minaeian, J.; Vaughan, A.; Dorsey, J. R.; Gallagher, M. W.; Le Breton, M.; Newton, R.; Percival, C. J.; Ricketts, H. M. A.; Baugitte, S. J-B.; Nott, G. J.; Wellpott, A.; Ashfold, M. J.; Flemming, J.; Butler, R.; Palmer, P. I.; Kaye, P. H.; Stopford, C.; Chemel, C.; Boesch, H.; Humpage, N.; Vick, A.; MacKenzie, A. R.; Hyde, R.; Angelov, P.; Meneguz, E.; Manning, A. J. (2017-01-23)The main field activities of the CAST (Co-ordinated Airborne Studies in the Tropics) campaign took place in the West Pacific in January/February 2014. The field campaign was based in Guam (13.5°N, 144.8°E) using the UK ... -
Complementary techniques for the analysis of the shape of airborne particles
Clark, J.M.; Kaye, Paul H.; Hirst, E. (1993-03-26) -
Continuous bio-aerosol monitoring in a tropical environment using a UV fluorescence and light scattering instrument
Stanley, W.; Kaye, Paul H.; Foot, V.E.; Barrington, S.J.; Gallagher, M.; Gabey, A. (University of Hertfordshire, 2008)This paper describes an instrument designed to achieve the continuous monitoring of ambient bio-aerosol concentrations. The instrument is a compact, relatively low-cost, UV aerosol spectrometer that monitors and classifies ... -
Continuous bioaerosol monitoring in a tropical environment using a UV fluorescence particle spectrometer
Stanley, W.; Kaye, Paul H.; Foot, V.E.; Barrington, S.J.; Gallagher, M.; Gabey, A. (2011)An instrument designed to continuously monitor ambient bioaerosol concentrations is presented. The instrument is a compact, relatively low-cost, UV aerosol spectrometer that monitors and classifies individual airborne ... -
Design and field campaign validation of a multi-rotor unmanned aerial vehicle and optical particle counter
Girdwood, Joseph; Smith, Helen R.; Stanley, Warren; Ulanowski, Joseph; Stopford, Chris; Chemel, Charles; Doulgeris, Konstantinos-Matthaios; Brus, David; Campbell, David; Mackenzie, Robert (2020-12-07)Small unmanned aircraft (SUA) have the potential to be used as platforms for the measurement of atmospheric particulates. The use of an SUA platform for these measurements provides benefits such as high manoeuvrability, ... -
Design of spatially extended neural networks for specific applications
Adams, Roderick; te Boekhorst, Rene; Rust, A.G.; Kaye, Paul H.; Schilstra, M. (Institute of Electrical and Electronics Engineers (IEEE), 2004)The processes and mechanisms of biological neural development provide many powerful insights for the creation of artificial neural systems. Biological neural systems are, in general, much more effective in carrying out ... -
Detection of Airborne Biological Particles in Indoor Air Using a Real-Time Advanced Morphological Parameter UV-LIF Spectrometer and Gradient Boosting Ensemble Decision Tree Classifiers
Crawford, Ian; Topping, David; Gallagher, M.W.; Forde, Elizabeth; Lloyd , J R; Foot, Virginia; Stopford, Chris; Kaye, Paul H. (2020-09-29)We present results from a study evaluating the utility of supervised machine learning to classify single particle ultraviolet laser-induced fluorescence (UV-LIF) signatures to investigate airborne primary biological aerosol ... -
Detection of Hazardous Airborne Fibres
Particle Instruments and diagnostics; Kaye, Paul H.; Hirst, Edwin (2003-08-12) -
Detection of Hazardous Airborne Fibres
Particle Instruments and diagnostics; Kaye, Paul H.; Hirst, Edwin (2003-06-18) -
Discrimination of micrometre-sized ice and super-cooled droplets in mixed-phase cloud
Hirst, E.; Kaye, Paul H.; Greenaway, R.; Field, P.R.; Johnson, D.W. (2001)Preliminary experimental results are presented from an aircraft-mounted probe designed to provide in situ data on cloud particle shape, size, and number concentration. In particular, the probe has been designed to facilitate ... -
A dual-wavelength single particle aerosol fluorescence monitor
Kaye, Paul H.; Stanley, W.; Foot, V.E.; Baxter, K.; Barrington, S.J. (2005)Laser diodes and light-emitting diodes capable of continuous sub-300 nm radiation emission will ultimately represent optimal excitation sources for compact and fieldable bio-aerosol monitors. However, until such devices ... -
Dust layer profiling using an aerosol dropsonde
Ulanowski, Z.; Kaye, Paul H.; Hirst, Edwin; Wieser, Andreas; Stanley, Warren (2015-04-12)Routine meteorological data is obtained in the atmosphere using disposable radiosondes, giving temperature, pressure, humidity and wind speed. Additional measurements are obtained from dropsondes, released from research ... -
The effect of airborne dust on astronomical polarization measurements
Bailey, Jeremy; Ulanowski, Z.; Lucas, P.W.; Hough, J. H.; Hirst, E.; Tamura, M. (2008-05-11)In the past, it has generally been assumed that polarization observations made with ground-based telescopes are unaffected by the passage of light through the Earth's atmosphere. Here, we report observations with a new ... -
The effective density of small ice particles obtained from in situ aircraft observations of mid-latitude cirrus
Cotton, Richard; Field, P.R.; Ulanowski, Joseph; Kaye, Paul H.; Hirst, Edwin; Greenaway, Richard; Crawford, I.A.; Crosier, J.; Dorsey, James (2013-10)The effective ice-particle density, parametrized through a mass–dimension relation, is widely used in ice microphysical schemes for weather and climate models. In this study, we use aircraft-based observations in mid-latitude ... -
Evaluation of machine learning algorithms for classification of primary biological aerosol using a new UV-LIF spectrometer
Ruske, Simon; Topping, D. O.; Foot, V.E.; Kaye, Paul; Stanley, Warren; Crawford, I.P.; Morse, Andrew; Gallagher, Martin W. (2017-03-03)Characterisation of bioaerosols has important implications within environment and public health sectors. Recent developments in ultraviolet light-induced fluorescence (UV-LIF) detectors such as the Wideband Integrated ... -
Evaluation of Machine Learning Algorithms for Classification of Primary Biological Aerosol using a new UV-LIF spectrometer
Ruske, Simon; Topping, D. O.; Foot, V.E.; Kaye, Paul; Stanley, Warren; Crawford, I.P.; Morse, Andrew; Gallagher, Martin W. (2016-07-13)Characterisation of bio-aerosols has important implications within Environment and Public Health sectors. Recent developments in Ultra-Violet Light Induced Fluorescence (UV-LIF) detectors such as the Wideband Integrated ... -
Experimental and theoretical light scattering profiles from spherical and non-spherical particles
Hirst, E.; Kaye, Paul H. (1996)A laser light scattering instrument has been designed to allow an investigation of the wide angle spatial intensity distribution, or scattering profile, of light scattered by individual airborne particles constrained within ... -
Exploring the surface roughness of small ice crystals by measuring high resolution angular scattering patterns.
Schnaiter, M.; Kaye, Paul H.; Hirst, Edwin; Ulanowski, Zbigniew; Wagner, Robert (2011)Surface roughness of atmospheric ice particles is an important yet poorly investigated microphysical property in the context of the climate impact of cirrus and mixed-phase clouds. Measurements of single particle two-dimensional ...