Identifying optimal co-location calibration periods for low-cost sensors.

ABSTRACT: Low-cost sensors are often co-located with reference instruments to assess their performance and establish calibration equations, but limited discussion has focused on whether the duration of this calibration period can be optimized. We placed a multipollutant monitor that contained sensors that measure particulate matter smaller than 2.5 μm (PM_2.5), carbon monoxide (CO), nitrogen dioxide (NO₂), ozone (O₃), and nitric oxide (NO) at a reference field site for one year. We developed calibration equations using randomly selected co-location subsets spanning 1 to 180 consecutive days out of the 1-year period and compared the potential root mean square errors (RMSE) and Pearson correlation coefficients (r). The co-located calibration period required to obtain co

SUBMITTER: Zamora ML 

PROVIDER: S-EPMC10270383 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature