Dataset
Abrasion chamber particle velocity data (mineral grain particle sizes D50 157-681 microns)
Abstract
Data relate to the velocities of mineral particles achieved within a glass test-tube abrasion chamber. Particles are agitated by airflow in to the chamber. Particle median grain size (D50) ranged from 157 to 681 microns. Particle mass varied from 10 g to 100 g. Particle velocities were measured over a 2D vertical grid aligned through the long-axis of the chamber using a Dantec(TM) 2D Laser Doppler Anemometer mounted on a 2D programmable traverse. Data were collected to determine how mineral particle velocities achieved within the chamber compared to those in natural saltation clouds.
This data is part of the project NE/X00015X/1: Microplastic entrainment, transport and fragmentation in atmospheric boundary-layer flows. The overall aim of this research is to understand the processes of microplastic entrainment and transport by wind and how these processes affect the material properties of microplastics. The knowledge gained will inform models for predicting land-atmosphere microplastic flux and distribution
Details
| Previous Info: |
No news update for this record
|
|---|---|
| Previously used record identifiers: |
No related previous identifiers.
|
| Access rules: |
Public data: access to these data is available to both registered and non-registered users.
Use of these data is covered by the following licence(s): http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record. |
| Data lineage: |
Data were produced by the project team and supplied for archiving at the Centre for Environmental Data Analysis (CEDA). |
| Data Quality: |
The particle detection sensitivity in the LDA software was preset to 900 and 1100 mV respectively for the horizontal and vertical pairs of lasers, and gain was set to 10 dB for both, to isolate the ballistic sand particle motion from that associated with the production of any dust in the chamber. To ensure sufficient particle counts were acquired for further analysis, particle velocities were measured at each node for 5 seconds (typically samples where D50 ≤ 414 µm), 20 seconds (≥ 528 µm) or 1500 particle counts in total, which ever was reached first.
|
| File Format: |
badc-csv
|
Related Documents
| GOTW - Details of Award |
Process overview
Independent Instruments
| Dantec 2D Laser Doppler Anemometer - Flow Explorer |
| Output Description | None |
- units:
- var_id: 9
- long_name: Horizontal Velocity Uv (m/s)
- units:
- var_id: 1
- long_name: ID Particle
- var_id: 11
- units:
- long_name: Intensity
- units:
- var_id: 2
- long_name: Node coordinate in X
- units:
- var_id: 3
- long_name: Node coordinate in Y
- units:
- var_id: 4
- long_name: Particle arrival time (hour)
- units:
- var_id: 7
- long_name: Particle arrival time (microseconds)
- units:
- var_id: 5
- long_name: Particle arrival time (minutes)
- units:
- var_id: 6
- long_name: Particle arrival time (seconds)
- units:
- var_id: 8
- long_name: Transit time (microseconds)
- var_id: 10
- units:
- long_name: Vertical velocity VV (m/s)