Archived Webinar

An Inside Look at How NASA Measures Air Pollution - Part 1: Measuring Nitrogen Dioxide from Space

"Most of the NO2 pollution is at ground level, where ecosystems and people live and breathe."

Why does NASA measure NO2? NO2 is a criteria pollutant regulated by the U.S. EPA (and in many other countries) and can be harmful to humans. NO2 produces ozone, another pollutant, and produces acid rain, which is detrimental to ecosystems. Sources of NO2 are lightning, fires, soils, combustion of fossil fuels (e.g., cars, power plants, manufacturing). Most of the NO2 pollution is at ground level, where ecosystems and people live and breathe.

By the end of this session, you will be able to:

  • Understand what satellites measure
  • Describe the capabilities and limitations of satellite NO2 observations
  • Find and download satellite imagery for NO2

Learning Objectives - 

  • What is NO2?
  • NASA Remote Sensing Basics
  • Interpreting NO2 Imagery: Dos and Don'ts
  • Downloading Data and Creating Imagery

Learners who have not completed the Fundamentals of Remote Sensing may not be prepared for the pace of the training.

This Learning Series was conducted by NASA's Applied Remote Sensing Training Program (ARSET). ARSET is a part of NASA's Applied Science's Capacity Building Program. To learn more about ARSET, click HERE.

In case of any questions regarding this Learning Series, please feel free to reach out to Ana I. Prados, Ph.D., Research Associate Professor, Joint Center for Earth Systems Technology (JCET), University of Maryland Baltimore County at

Target Audience

Members of the public, journalists, meteorologists, and others new to remote sensing.

Questions Submitted


- Jul 20, 2022

jose luis

- Jul 17, 2022
muy bueno


- Mar 27, 2022


- Sep 28, 2021
Good innovation in the measures to controlling pollution.

Joy Mildred Adhiambo

- Sep 14, 2021
Great Discussion

Jes�s Manuel

- Aug 11, 2021
Great Conversation

Mohammad Nadir

- Jun 29, 2021


- Jun 29, 2021


- Jun 20, 2021
Wonderful discovery to measure Nitrogen Dioxide from the Space.


- Jun 20, 2021
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