The following files contain images extracted from recorded videos of particle tracking velocimetry in wind tunnel experiments examining the interaction between sand and airflow. These experiments are part of the NERC funded project 'Microplastic Entrainment, Transport and Fragmentation, in Atmospheric Boundary-layer Flows'.

The directory contains files with .tif images corresponding to the experiments with sand particles, under air velocities of 6 and 10 metres per second. The videos were recorded with a Dimax HD high speed camera and lasted 4.1 seconds. Frames were captured with a 200 micro seconds exposure rate of 1550 per second, through a Nikon Micro Nikkor 200 mm F4 objective lens in 12 bit grayscale with a pixel resolution of 1920 by 1080. The rectangular viewing area of each image spanned a physical distance of 62 mm in width, parallel to the mean wind flow, and 35 mm in height. The experiments were run from Jun 24 to July 5th, 2024, in the Trent Environmental Wind Tunnel (TEWT) Facilities, at Trent University, Ontario, Canada.

This dataset was generated as part of NERC grant: NE/X00015X/1:Microplastic entrainment, transport and fragmentation in atmospheric boundary-layer flows

The folder names correspond to the following structure: Test number _ test repetition (R1, R2, R3) _ experimental tunnel air velocity _ particle release distance from the camera (Upwind_Fibre_Position_ …).

The image names within each folder correspond to the following structure: Test number _ particle release distance from the camera (L0cm, L25cm, L60cm, L110cm, L200cm) _ test repetition (R1, R2, R3) _ consecutive image number (0001, …, 6155).