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Full catalog/no2-monthly-diff
no2-monthly-diff·dataset

Change in Nitrogen Dioxide Air Pollution

NO₂ (Diff)
atmosphere NASA VEDA COG
In plain English

What it measures. Shows how nitrogen dioxide (NO₂) pollution levels changed, with redder areas marking increases and bluer areas decreases. Blank spots usually mean clouds or snow blocked the view.

How it's made. Built from satellite measurements of nitrogen dioxide in the atmosphere, comparing one period against another.

How & where you'd use it. Reveals where air pollution rose or fell, such as during lockdowns or shifts in activity.

What's measured

no2monthlydiff

Coverage & cadence

  • Time span2015-01-01 → 2022-12-31
  • Spatial extent-180, -90, 180, 90
  • FormatsCOG

What you can do with it

  • Map air pollutants — NO₂, aerosols, ozone
  • Track greenhouse gases and Earth's energy budget
  • Feed weather and air-quality analysis
Official description

This layer shows changes in nitrogen dioxide (NO₂) levels. Redder colors indicate increases in NO₂. Bluer colors indicate lower levels of NO₂. Missing pixels indicate areas of no data most likely associated with cloud cover or snow.

Get the data

veda_access.py
# NASA VEDA — open STAC API, anonymous (cloud-optimized GeoTIFFs)
from pystac_client import Client

cat = Client.open("https://openveda.cloud/api/stac")
col = cat.get_collection("no2-monthly-diff")
items = list(col.get_items())          # browse the analysis-ready COGs
# open an asset with rioxarray:
# import rioxarray; da = rioxarray.open_rasterio(items[0].assets["cog_default"].href)
NASA VEDA is an open STAC catalog — browse and stream the cloud-optimized GeoTIFFs anonymously (no login).