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CartographyKernel Density

Spatial Distribution of PM2.5 across India

Role
Cartographer
Affiliation
GEOG 3xx — Cartography
Date
2024
Tools
ArcGIS ProQGIS
Research question

How is monitored PM2.5 distributed across India, and where is the network sparse?

Objective

Translate discrete station readings into an interpolated heat surface and a clean, legible reference map.

Data
CPCB ground-station readingssource ↗GADM boundariessource ↗
Methodology / Workflow
  1. 1

    Cleaned and geocoded the station table; removed duplicate and offline sensors.

  2. 2

    Ran kernel density with a search radius tuned to mean station spacing.

  3. 3

    Designed a sequential colour ramp and full marginalia for print output.

Maps & results

Click any map to enlarge

Fig. 1 — Station locations over administrative base.
Fig. 2 — Kernel-density PM2.5 heat surface.
Findings