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4 results for “fluorescent aerosol particles”
Number concentration and fluorescent class fraction of fluorescent and hyper-fluorescent aerosol particles measured during the Antarctic Circumnavigation Expedition
<p><strong>Dataset abstract</strong></p> <p>This dataset consists of a 5-minute time series of number concentrations of fluorescent and total aerosol particles that were measured by wideband integrated by aerosol sensor during the Antarctic Circumnavigation Expedition in the austral summer of 2016/2017. Furthermore, the dataset includes the fraction of fluorescent classes of aerosol particles, according to the ABC classification of Perring et al. (2015). The dataset provides information on fluorescent and hyper-fluorescent aerosols which were obtained by considering low and high fluorescence thresholds. For this dataset, aerosol particles that have optical diameter greater than 1 μm are considered. Since the ship’s exhaust could considerably affect the fluorescence properties of aerosol particles, in this dataset we removed the periods where it is likely that the samples were contaminated by the ship's exhaust.</p> <p><strong>Dataset contents</strong></p> <ul> <li>N_fluorescent.csv, data file, comma-separated values</li> <li>N_hyper_fluorescent.csv, data file, comma-separated values</li> <li>data_file_header.txt, metadata, text</li> <li>README.txt, metadata, text</li> </ul> <p><strong>Dataset license</strong></p> <p>This number concentration and fluorescent class fraction of fluorescent and hyper-fluorescent aerosol particles dataset from ACE is made available under the Creative Commons Attribution 4.0 International License (CC BY 4.0) whose full text can be found at https://creativecommons.org/licenses/by/4.0/</p>
Particle number size distribution of fluorescent, hyper-fluorescent, and total aerosol particles measured during the Antarctic Circumnavigation Expedition.
<p><strong>Dataset abstract</strong></p> <p>This dataset consists of a 5-minute time series of particle number concentration of fluorescent and total aerosol particles that were measured by wideband integrated by aerosol sensor during the Antarctic Circumnavigation Expedition during the austral summer of 2016/2017. For this dataset, aerosol particles within the optical diameter range of 0.5 μm to 14.5 μm were considered. In this dataset, the time periods when samples are likely contaminated by the ship’s exhaust were removed from the time series.</p> <p><strong>Dataset contents</strong></p> <ul> <li>PSD_fluorescent.csv , data file, comma-separated values</li> <li>PSD_hyper_fluorescent.csv , data file, comma-separated values</li> <li>PSD_hyper_tot.csv , data file, comma-separated values</li> <li>data_file_header.txt, metadata, text</li> <li>README.txt, metadata, text</li> </ul> <p><strong>Dataset license</strong></p> <p>This particle number size distribution of fluorescent, hyper-fluorescent, and total aerosol particles dataset from ACE is made available under the Creative Commons Attribution 4.0 International License (CC BY 4.0) whose full text can be found at https://creativecommons.org/licenses/by/4.0/</p>
Data of Fluorescent Aerosol Particles during the Pallas Cloud Experiment 2022
<p>Overview: This data set contains number concentrations and number size distributions of total aerosol particles (TAPs), fluorescent aerosol particles (FAPs) and highly fluorescent aerosol particles (HFAPs) of diameter 0.5 to 30 µm (optical equivalent diameter) obtained by a Wideband Integrated Bioaerosol Sensor 5/NEO (Droplet Measurement Technologies) during the Pallas Cloud Experiment 2022 (PaCE22) campaign in the sub Arctic region of Finish Lapland. The instrument was operated between 17.09.2022 17:00 UTC and 13.12.2022 21:00 UTC at Sammaltunturi Station (67.9733°N 24.1157°E) at 564 m above sea level in the Pallas Atmosphere-Ecosystem Supersite and was connected to a heated total suspended particles (TSP) inlet.</p> <p>Instrument description: The WIBS samples air with a sample flow rate of 0.3 L/min and uses a 635 nm diode laser to measure the size of single particles between 0.5 and 30 µm and to trigger two xenon lamps with excitation wavelengths of 280 nm and 370 nm. Fluorescence emission intensity is measured in two emission windows of 310 - 400 nm and 420 - 650 nm resulting in three main fluorescence channels: FL1 (excitation 280 nm and emission 310 – 400 nm), FL2 (excitation 280 nm and emission 420 - 650 nm) and FL3 (excitation 370 nm and emission 420 - 650 nm). A particle is considered as fluorescent, if it exceeds the three sigma fluorescence threshold (forced trigger intensity plus three standard deviations) in any channel (FAP). A particle is considered highly fluorescent if it exceeds the nine sigma fluorescence threshold (forced trigger intensity plus nine standard deviations) in any channel (HFAP). Both FAPs and HFAPs are split into 10 types of fluorescent particles each, using the Perring nomenclature (Perring et al., 2015): (H)FAP_ A (FL1 only), (H)FAP_ B (FL2 only), (H)FAP_ C (FL3 only), (H)FAP_ AB (FL1 and FL2 only), (H)FAP_ AC (FL1 and FL3 only), (H)FAP_ BC(FL2 and FL3 only) and (H)FAP_ ABC (FL1 and FL2 and FL3), (H)FAP_ FL1 (A+AB+AC+ABC), (H)FAP_ FL2(B+AB+BC+BC) and (H)FAP_ FL3 (C+AC+BC+ABC). </p> <p>The files are separated by date (in UTC) and are named the following: TUW.WIBS_N.b1.yyyyMMdd.hhmm.csv. The data file processing level is b1. Quality control checks were applied and missing data points or those with bad values were set to -9999.9.</p> <p>References: Perring et al., “Airborne observations of regional variation in fluorescent aerosol across the United States,” J Geophys Res-Atmos, vol. 120, Art. no. 3, 2015.</p>
Data from: Diurnal trends of indoor and outdoor fluorescent biological aerosol particles in a tropical urban area
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