MPC Member Publications

This database contains a listing of population studies publications written by MPC Members. Anyone can add a publication by an MPC student, faculty, or staff member to this database; new citations will be reviewed and approved by MPC administrators.

Full Citation

Title: Developing a geostatistical simulation method to inform the quantity and placement of new monitors for a follow-up air sampling campaign

Citation Type: Journal Article

Publication Year: 2019

ISSN: 1559064X

DOI: 10.1038/s41370-018-0073-6

PMID: 30237550

Abstract: Sampling campaign design is a crucial aspect of air pollution exposure studies. Selection of both monitor numbers and locations is important for maximizing measured information, while minimizing bias and costs. We developed a two-stage geostatistical-based method using pilot NO 2 samples from Lanzhou, China with the goal of improving sample design decision-making, including monitor numbers and spatial pattern. In the first step, we evaluate how additional monitors change prediction precision through minimized kriging variance. This was assessed in a Monte Carlo fashion by adding up to 50 new monitors to our existing sites with assigned concentrations based on conditionally simulated NO 2 surfaces. After identifying a number of additional sample sites, a second step evaluates their potential placement using a similar Monte Carlo scheme. Evaluations are based on prediction precision and accuracy. Costs are also considered in the analysis. It was determined that adding 28-locations to the existing Lanzhou NO 2 sampling campaign captured 73.5% of the total kriged variance improvement and resulted in predictions that were on average within 10.9 μg/m 3 of measured values, while using 56% of the potential budget. Additional monitor sites improved kriging variance in a nonlinear fashion. This method development allows for informed sampling design by quantifying prediction improvement (accuracy and precision) against the costs of monitor deployment.

Url: https://www.nature.com/articles/s41370-018-0073-6

User Submitted?: No

Authors: Berman, Jesse David; Jin, L.; Bell, M. L.; Curriero, F. C.

Periodical (Full): Journal of Exposure Science and Environmental Epidemiology

Issue: 2

Volume: 29

Pages: 248-257

Countries:

IPUMS NHGIS NAPP IHIS ATUS Terrapop