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Browsing by Author "Smith, Helen R."
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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 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, ... -
A High Speed Particle Phase Discriminator (PPD-HS) for the classification of airborne particles, as tested in a continuous flow diffusion chamber
Mahrt, Fabian; Wieder, Jorg; Dietlicher, Remo; Smith, Helen R.; Stopford, Chris; Kanji, Zamin (2019-06-14)A new instrument, the High-speed Particle Phase Discriminator (PPD-HS), developed at the University of Hertfordshire, for sizing individual cloud hydrometeors and determining their phase is described herein. PPD-HS performs ... -
Studies on mineral dust using airborne lidar, ground-based remote sensing, and in situ instrumentation
Marenco, Franco; Ryder, Claire; Estelles, Victor; Segura, Sara; Amiridis, Vassilis; Proestakis, Emmanouil; Marinou, Eleni; Tsekeri, Alexandra; Smith, Helen R.; Ulanowski, Zbigniew; O'Sullivan, Debbie; Brooke, Jennifer; Pradhan, Yaswant; Buxmann, Joelle (2018-04-13)In August 2015, the AER-D campaign made use of the FAAM research aircraft based in Cape Verde, and targeted mineral dust. First results will be shown here. The campaign had multiple objectives: (1) lidar dust mapping for ... -
The Universal Cloud and Aerosol Sounding System (UCASS): a low-cost miniature optical particle counter for use in dropsonde or balloon-borne sounding systems
Smith, Helen R.; Ulanowski, Joseph; Kaye, Paul H.; Hirst, Edwin; Stanley, Warren; Kaye, Richard; Wieser, Andreas; Stopford, Chris; Kezoudi, Maria; Girdwood, Joseph; Greenaway, Richard; MacKenzie, A Robert (2019-12-13)A low-cost miniaturized particle counter has been developed by The University of Hertfordshire (UH) for the measurement of aerosol and droplet concentrations and size distributions. The Universal Cloud and Aerosol Sounding ...