Publication Abstracts

Raheja et al. 2022

Raheja, G., K. Sabi, H. Sonla, E.K. Gbedjangni, C.M. McFarlane, C.G. Hodoli, and D.M. Westervelt, 2022: A network of field-calibrated low-cost sensor measurements of PM2.5 in Lomé, Togo, over one to two years. ACS Earth Space Chem., 6, no. 4, 1011-1021, doi:10.1021/acsearthspacechem.1c00391.

Air pollution is a leading cause of global premature mortality and is especially prevalent in many low- and middle-income countries (LMICs). In sub-Saharan Africa, preliminary monitoring networks, satellite retrievals of air-quality-relevant species, and air quality models show ambient fine particulate matter (PM2.5) concentrations that far exceed the World Health Organization guidelines, yet many areas remain largely unmonitored and understudied. Deploying a network of five low-cost PurpleAir PM2.5 monitors over 2 years (2019-2021), we present the first multiyear ambient air pollution monitoring data results from Lomé, Togo, a major West African coastal city with a population of about 1.4 million people. The full-study time period network-wide mean measured daily PM2.5 concentration is 23.5 µg m-3. The strong regional influence of the dry and dusty Harmattan wind increases the local average PM2.5 concentration by up to 58% during December through February, but the diurnal and weekly trends in PM2.5 are largely controlled by local influences. At all sites, more than 87% of measured days exceeded the new WHO Daily PM2.5 guidelines; these first measurements highlight the need for air quality improvement in a rapidly growing urban metropolis.

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BibTeX Citation

@article{ra07010d,
  author={Raheja, G. and Sabi, K. and Sonla, H. and Gbedjangni, E. K. and McFarlane, C. M. and Hodoli, C. G. and Westervelt, D. M.},
  title={A network of field-calibrated low-cost sensor measurements of PM2.5 in Lomé, Togo, over one to two years},
  year={2022},
  journal={ACS Earth Space Chem.},
  volume={6},
  number={4},
  pages={1011--1021},
  doi={10.1021/acsearthspacechem.1c00391},
}

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RIS Citation

TY  - JOUR
ID  - ra07010d
AU  - Raheja, G.
AU  - Sabi, K.
AU  - Sonla, H.
AU  - Gbedjangni, E. K.
AU  - McFarlane, C. M.
AU  - Hodoli, C. G.
AU  - Westervelt, D. M.
PY  - 2022
TI  - A network of field-calibrated low-cost sensor measurements of PM2.5 in Lomé, Togo, over one to two years
JA  - ACS Earth Space Chem.
VL  - 6
IS  - 4
SP  - 1011
EP  - 1021
DO  - 10.1021/acsearthspacechem.1c00391
ER  -

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