NASA Image of the Day - March 2, 2020 (IMAGE) University of Washington Caption This satellite image, which was NASA's Image of the Day for March 2, 2020, compares nitrogen dioxide over China in early January and mid-February 2020. The difference shows the dramatic effects of reduced traffic during the February lockdown. The new study calculates the size of this effect, accounting for other factors that would affect air quality. Credit NASA Usage Restrictions With credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.