Spatial resolution of Normalized Difference Vegetation Index and greenness exposure misclassification in an urban cohort.

ABSTRACT:

Background

The Normalized Difference Vegetation Index (NDVI) is a measure of greenness widely used in environmental health research. High spatial resolution NDVI has become increasingly available; however, the implications of its use in exposure assessment are not well understood.

Objective

To quantify the impact of NDVI spatial resolution on greenness exposure misclassification.

Methods

Greenness exposure was assessed for 31,328 children in the Greater Boston Area in 2016 using NDVI from MODIS (250 m²), Landsat 8 (30 m²), Sentinel-2 (10 m²), and the National Agricultural Imagery Program (NAIP, 1 m²). We compared continuous and categorical greenness estimates for multiple buffer sizes under a reliability assessment framework

SUBMITTER: Jimenez RB 

PROVIDER: S-EPMC11649244 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature