{ "id": 31225, "url": "https://svs.gsfc.nasa.gov/31225/", "page_type": "Hyperwall Visual", "title": "Pandemic Before And After: Northeast US 2015-2019 Versus 2020", "description": "Pandemic Before And After: Northeast US 2015-2019 Versus 2020 || NO2_USCities_00000_print.jpg (1024x576) [175.6 KB] || NO2_USCities_00000_searchweb.png (320x180) [84.7 KB] || NO2_USCities_00000_thm.png (80x40) [5.7 KB] || NO2_USCities_1080p29.97.mp4 (1920x1080) [28.4 MB] || NO2_USCities_1080p29.97.webm (1920x1080) [7.1 MB] || 3840x2160_16x9_30p (3840x2160) [0 Item(s)] || NO2_USCities_2160p29.97.mp4 (3840x2160) [72.5 MB] || ", "release_date": "2023-05-01T00:00:00-04:00", "update_date": "2025-02-03T00:53:21.529827-05:00", "main_image": { "id": 855004, "url": "https://svs.gsfc.nasa.gov/vis/a030000/a031200/a031225/NO2_USCities_00000_print.jpg", "filename": "NO2_USCities_00000_print.jpg", "media_type": "Image", "alt_text": "Pandemic Before And After: Northeast US 2015-2019 Versus 2020", "width": 1024, "height": 576, "pixels": 589824 }, "main_video": null, "main_credits": { "Visualizations by": [ { "name": "Mark Malanoski", "employer": "Global Science and Technology, Inc." } ] }, "progress": "Complete", "media_groups": [ { "id": 312533, "url": "https://svs.gsfc.nasa.gov/31225/#media_group_312533", "widget": "Video player", "title": "", "caption": "", "description": "Pandemic Before And After: Northeast US 2015-2019 Versus 2020", "items": [ { "id": 206514, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 855004, "url": "https://svs.gsfc.nasa.gov/vis/a030000/a031200/a031225/NO2_USCities_00000_print.jpg", "filename": "NO2_USCities_00000_print.jpg", "media_type": "Image", "alt_text": "Pandemic Before And After: Northeast US 2015-2019 Versus 2020", "width": 1024, "height": 576, "pixels": 589824 } }, { "id": 206515, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 855005, "url": "https://svs.gsfc.nasa.gov/vis/a030000/a031200/a031225/NO2_USCities_00000_searchweb.png", "filename": "NO2_USCities_00000_searchweb.png", "media_type": "Image", "alt_text": "Pandemic Before And After: Northeast US 2015-2019 Versus 2020", "width": 320, "height": 180, "pixels": 57600 } }, { "id": 206516, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 855006, "url": "https://svs.gsfc.nasa.gov/vis/a030000/a031200/a031225/NO2_USCities_00000_thm.png", "filename": "NO2_USCities_00000_thm.png", "media_type": "Image", "alt_text": "Pandemic Before And After: Northeast US 2015-2019 Versus 2020", "width": 80, "height": 40, "pixels": 3200 } }, { "id": 206518, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 855008, "url": "https://svs.gsfc.nasa.gov/vis/a030000/a031200/a031225/NO2_USCities_1080p29.97.mp4", "filename": "NO2_USCities_1080p29.97.mp4", "media_type": "Movie", "alt_text": "Pandemic Before And After: Northeast US 2015-2019 Versus 2020", "width": 1920, "height": 1080, "pixels": 2073600 } }, { "id": 206519, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 855034, "url": "https://svs.gsfc.nasa.gov/vis/a030000/a031200/a031225/NO2_USCities_1080p29.97.webm", "filename": "NO2_USCities_1080p29.97.webm", "media_type": "Movie", "alt_text": "Pandemic Before And After: Northeast US 2015-2019 Versus 2020", "width": 1920, "height": 1080, "pixels": 2073600 } }, { "id": 206513, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 855003, "url": "https://svs.gsfc.nasa.gov/vis/a030000/a031200/a031225/frames/3840x2160_16x9_30p/", "filename": "3840x2160_16x9_30p", "media_type": "Frames", "alt_text": "Pandemic Before And After: Northeast US 2015-2019 Versus 2020", "width": 3840, "height": 2160, "pixels": 8294400 } }, { "id": 206517, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 855007, "url": "https://svs.gsfc.nasa.gov/vis/a030000/a031200/a031225/NO2_USCities_2160p29.97.mp4", "filename": "NO2_USCities_2160p29.97.mp4", "media_type": "Movie", "alt_text": "Pandemic Before And After: Northeast US 2015-2019 Versus 2020", "width": 3840, "height": 2160, "pixels": 8294400 } } ], "extra_data": {} }, { "id": 312532, "url": "https://svs.gsfc.nasa.gov/31225/#media_group_312532", "widget": "Basic text with HTML", "title": "", "caption": "", "description": "Over the past several weeks, the Northeast U.S. has seen significant reductions in air pollution over many of its major metropolitan areas, such as New York City and Baltimore. Similar reductions in air pollution have been observed across the globe. These recent improvements in air quality have come at a high cost, as communities grapple with the widespread stay-at-home advisories that began about a month ago as a result of the spread of COVID-19. The slider above shows satellite data of NO2 from the Aura Ozone Monitoring Instrument (OMI) over the Northeast United States in March. The image on the left shows the mean of the period from 2015 through 2019, while the image on the right shows the mean for 2020. Though variations in weather from year to year cause variations in the monthly means for individual years (see animation below), March 2020 shows the lowest values as compared to any of the monthly values for March during the OMI data record, which spans 2005 to present. In fact, the data indicate that the NO2 levels in March 2020 are about 30% lower on average across the region of the I-95 corridor from Washington, DC to Boston than when compared to the mean of 2015 to 2019. Caution: Further analysis is required to rigorously quantify the amount of the change in NO2 levels associated with changes in pollutant emissions versus natural variations in weather. The images are free and publicly-available and may be downloaded. NEW! For scientists: Global OMI NO2 Monitor.", "items": [], "extra_data": {} }, { "id": 312534, "url": "https://svs.gsfc.nasa.gov/31225/#media_group_312534", "widget": "Basic text", "title": "For More Information", "caption": "", "description": "See [https://airquality.gsfc.nasa.gov/slider/pandemic-and-after-northeast-us-2015-2019-versus-2020](https://airquality.gsfc.nasa.gov/slider/pandemic-and-after-northeast-us-2015-2019-versus-2020)", "items": [], "extra_data": {} } ], "studio": "hw", "funding_sources": [ "SMD" ], "credits": [ { "role": "Animator", "people": [ { "name": "Mark Malanoski", "employer": "Global Science and Technology, Inc." } ] }, { "role": "Research scientist", "people": [ { "name": "Bryan Duncan", "employer": "NASA/GSFC" } ] } ], "missions": [ "Aura" ], "series": [], "tapes": [], "papers": [], "datasets": [ { "name": "", "common_name": "", "platform": "Aura", "sensor": "OMI", "type": "Other", "organizations": [], "description": "", "credit": "", "url": "", "date_range": "3/30/2020" } ], "nasa_science_categories": [ "Earth" ], "keywords": [ "Atmosphere", "Atmospheric Chemistry/Nitrogen Compounds", "Aura", "Earth Science", "Hyperwall", "Nitrogen Dioxide" ], "recommended_pages": [], "related": [ { "id": 5325, "url": "https://svs.gsfc.nasa.gov/5325/", "page_type": "Visualization", "title": "Tropspheric NO2 Column over Eastern United States, 2015-2023", "description": "Tropspheric NO2 column over Eastern United States, 2015-2023 || NO2_NE_2015-2023_1080p30.00001_print.jpg (1024x576) [158.6 KB] || NO2_NE_2015-2023_1080p30.00001_searchweb.png (320x180) [79.5 KB] || NO2_NE_2015-2023_1080p30.00001_thm.png (80x40) [5.9 KB] || NO2_NE_2015-2023_1080p30.mp4 (1920x1080) [13.1 MB] || This animation is an update to svs.gsfc.nasa.gov/4810, extending the visualization of OMI nitrogen dioxide data through 2023. || ", "release_date": "2024-06-19T00:00:00-04:00", "update_date": "2025-01-19T23:10:32.761221-05:00", "main_image": { "id": 1095005, "url": "https://svs.gsfc.nasa.gov/vis/a000000/a005300/a005325/NO2_NE_2015-2023_1080p30.00001_print.jpg", "filename": "NO2_NE_2015-2023_1080p30.00001_print.jpg", "media_type": "Image", "alt_text": "Tropspheric NO2 column over Eastern United States, 2015-2023", "width": 1024, "height": 576, "pixels": 589824 } }, { "id": 4810, "url": "https://svs.gsfc.nasa.gov/4810/", "page_type": "Visualization", "title": "Reductions in Pollution Associated with Decreased Fossil Fuel Use Resulting from COVID-19 Mitigation", "description": "Over the past several weeks, the United States has seen significant reductions in air pollution over its major metropolitan areas. Similar reductions in air pollution have been observed in other regions of the world. || Tropospheric NO2 Column, Animated GIF || cropped_NO2_2019_2020.gif (848x862) [54.4 MB] || cropped_NO2_2019_2020_print.jpg (1024x1040) [318.2 KB] || cropped_NO2_2019_2020_searchweb.png (320x180) [102.2 KB] || ", "release_date": "2020-04-24T00:00:00-04:00", "update_date": "2025-01-19T22:42:34.297178-05:00", "main_image": { "id": 385773, "url": "https://svs.gsfc.nasa.gov/vis/a000000/a004800/a004810/2020_NO2_print_print.jpg", "filename": "2020_NO2_print_print.jpg", "media_type": "Image", "alt_text": "Tropospheric NO2 Column, March 2020, Northeast USA, No Labels", "width": 1024, "height": 576, "pixels": 589824 } }, { "id": 11574, "url": "https://svs.gsfc.nasa.gov/11574/", "page_type": "Produced Video", "title": "Nitrogen Dioxide Reduction Across the Northeast Corridor", "description": "Anyone living in the U.S. for the past decade may have noticed a change in the air. The change is apparent in NASA satellite images that demonstrate the country's reduction of air pollution, or more specifically, nitrogen dioxide.Nitrogen dioxide can impact the respiratory system, and it also contributes to the formation of other pollutants including ground-level ozone and particulates. The gas is produced primarily during the combustion of gasoline in vehicle engines and coal in power plants. Air pollution has decreased even though population and the number of cars on the roads have increased. The shift is the result of regulations, technology improvements and economic changes, scientists say.This visualization shows tropospheric column concentrations of nitrogen dioxide as detected by the Ozone Monitoring Instrument on NASA's Aura satellite, averaged yearly from 2005-2011. Blue and green denote lower concentrations and orange and red areas denote higher concentrations, ranging from 1e+15 to 5e+15 molecules per square centimeter, respectively. Pollution builds up along the U.S. East Coast as it passes from one city to the next, particularly in the Northeast Corridor. These cities include Richmond, Washington, D.C., Baltimore, Philadelphia, New York City, Boston and all the smaller cities in between. Some of the largest absolute changes in nitrogen dioxide have occurred in this corridor. || ", "release_date": "2014-06-26T06:00:00-04:00", "update_date": "2023-05-03T13:50:47.984004-04:00", "main_image": { "id": 454027, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011500/a011574/NE_corridor_no_roads_states-1920-6000002_print.jpg", "filename": "NE_corridor_no_roads_states-1920-6000002_print.jpg", "media_type": "Image", "alt_text": "This visualization shows nitrogen dioxide data only. ", "width": 1024, "height": 576, "pixels": 589824 } } ], "sources": [], "products": [], "newer_versions": [], "older_versions": [], "alternate_versions": [] }