DSCOVR EPIC Level 2 Total Ozone, Version 3

Description

DSCOVR_EPIC_L2_TO3_v03 is Level2 Total Ozone derived from the Deep Space Climate Observatory (DSCOVR) Earth Polychromatic Imaging Camera (EPIC) using Level 1b version 3 inputs and version 3 ozone retrieval algorithm. The measurements from four EPIC UV channels are used to derive the global distributions of total ozone over the entire sunlit portion of the Earth. A new soft calibration technique developed based on scene matching with OMPS gives calibrated EPIC radiances. The calibrated EPIC radiances are used to derive science-quality total ozone products from EPIC that are consistent with those from other UV instruments. The retrieval algorithm uses wavelength triplets and assumes that the scene reflectivity changes linearly with wavelength. Version 3 algorithm includes several key modifications aimed to improve total ozone retrievals: a) switch to Version 3 Level 1b product with improved geolocation registration, flat field and dark counts corrections; b) replace OMI based cloud height climatology with the simultaneous EPIC A-Band cloud height; c) update absolute calibrations using polar orbiting SNPP OMPS; d) add corrections for ozone profile shape and temperature; e) update algorithm and error flags to filter data; f) add column weighting functions for each observation to facilitate error analysis. EPIC ozone retrievals accurately capture short term synoptic changes in total column ozone. With EPIC measurements from DSCOVR's vantage point synoptic ozone maps can be derived every 1-2 hours. Scene Reflectivity (clouds, aerosols, and surface) is derived as part of the ozone retrieval. The scene reflectivity in conjunction with ozone has been used to derive the amount of UV solar radiation reaching the ground, and surface UV Erythemal is also reported in these files.

Resources

Name Format Description Link
21 A New Blue Marble By Scott Kelly, NASA Astronaut https://medium.com/@ObamaWhiteHouse/a-new-blue-marble-39c2fe1b5b3c?
21 Earth Observation Portal Page for DSCOVR Mission Information https://directory.eoportal.org/web/eoportal/satellite-missions/d/dscovr
21 DOI data set landing page for DSCOVR_EPIC_L2_TO3_03 https://doi.org/10.5067/EPIC/DSCOVR/L2_TO3_03
21 DSCOVR EPIC Visualization Tool https://epic.gsfc.nasa.gov/
21 NASA Captures "EPIC" Earth Image Article from July 20, 2015 https://www.nasa.gov/image-feature/nasa-captures-epic-earth-image
21 ASDC Data and Information for DSCOVR https://asdc.larc.nasa.gov/project/DSCOVR
21 NASA Goddard Twitter Page https://twitter.com/NASAGoddard/status/676462280469553154
21 NASA Leadership Blog, DSCOVR’s First Light on the Future by Buzz Aldrin https://blogs.nasa.gov/leadership/2015/07/20/dscovrs-first-light-on-the-future/
21 New York Times Blog "From a Million Miles Away, a New NASA ‘Blue Marble’ View of Earth" By Andrew C. Revkin https://dotearth.blogs.nytimes.com/2015/07/21/from-a-million-miles-away-a-new-nasa-blue-marble-view-of-earth
21 The Atlantic Article "Al Gore Dreamed Up a Satellite—and It Just Took Its First Picture of Earth: The U.S. Deep Space Climate Observatory just sent back its first view of our home world, and it’s a beauty." By Robinson Meyer, July 20, 2015 https://www.theatlantic.com/technology/archive/2015/07/our-new-and-daily-view-of-the-blue-marble/399011/
21 NASA Earth Observatory Article: Plumes From Africa's Volcanic Duo: Image of the Day - Located near the equator in central Africa, the Nyamuragira and Nyiragongo volcanoes are often obscured from satellite view by clouds https://earthobservatory.nasa.gov/images/85273/plumes-from-africas-volcanic-duo
21 NASA Earth Observatory Article: The Legacy of Nimbus: Image of the Day - No Longer Just for Astronauts https://earthobservatory.nasa.gov/images/84542/the-legacy-of-nimbus
21 NASA Earth Observatory Article: Space Debris: Image of the Day - Low and High Earth Orbital Debris Images https://earthobservatory.nasa.gov/images/40173/space-debris
21 NASA Earth Observatory Article: Keeping on the Sunny Side of Earth https://earthobservatory.nasa.gov/images/87167/keeping-on-the-sunny-side-of-earth
21 NASA Earth Observatory Article: The Dark Side and the Bright Side: Image of the Day - A NASA camera aboard the Deep Space Climate Observatory (DSCOVR) has captured a unique view of the Moon as it passed between the spacecraft and Earth https://earthobservatory.nasa.gov/images/86353/the-dark-side-and-the-bright-side
21 NASA Earth Observatory Article: An EPIC New View of Earth: Image of the Day - From one million miles away, the DSCOVR satellite returned its first view of the entire sunlit side of Earth https://earthobservatory.nasa.gov/images/86257/an-epic-new-view-of-earth
21 NASA Earth Observatory Article: Up, Up, and Away for DSCOVR - The journey has been a long one for the Deep Space Climate Observatory (DSCOVR) https://earthobservatory.nasa.gov/images/85288/up-up-and-away-for-dscovr
21 NOAA's Weather and Climate Toolkit https://www.ncdc.noaa.gov/wct/
21 NOAA - National Climatic Data Center (NCDC) https://www.noaa.gov/
21 ASDC Direct Data Download for DSCOVR_EPIC_L2_TO3_03 https://asdc.larc.nasa.gov/data/DSCOVR/EPIC/L2_TO3_03/
21 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.5067%2FEPIC%2FDSCOVR%2FL2_TO3_03
21 Earthdata Search for DSCOVR_EPIC_L2_TO3_03 (NASA Application to search, discover, visualize, refine, and access NASA Earth Observation data) https://search.earthdata.nasa.gov/search/granules?p=C1990753071-LARC_ASDC
21 How to cite ASDC data https://asdc.larc.nasa.gov/citing-data
21 Discover Article "The U.S. Deep Space Climate Observatory just sent back its first view of our home world, and it’s a beauty." By Robinson Meyer, July 20, 2015 https://www.discovermagazine.com/environment/a-spectacular-view-of-earth-unlike-any-seen-since-1972
21 NASA Earth Observatory Article: 2016 Tournament Earth Champion: The Dark Side of the Moon - The images were acquired by the Earth Polychromatic Imaging Camera (EPIC) on the DSCOVR satellite https://earthobservatory.nasa.gov/blogs/earthmatters/2016/04/05/2016-tournament-earth-champion-the-dark-side-of-the-moon/
21 OPeNDAP data access for DSCOVR_EPIC_L2_TO3_03 https://opendap.larc.nasa.gov/opendap/DSCOVR/EPIC/L2_TO3_03/contents.html
21 NASA Earth Observatory Article: Zaatari Refugee Camp, Jordan: Image of the Day https://earthobservatory.nasa.gov/images/81818/zaatari-refugee-camp-jordan
21 NASA Earth Observatory Article: April : 2016 : Earth Matters : Blog - The images were acquired by the Earth Polychromatic Imaging Camera (EPIC) on the DSCOVR satellite https://earthobservatory.nasa.gov/blogs/earthmatters/2016/04/
21 NASA Earth Observatory Article: Seeing Through the Smoky Pall: Observations from a Grim Indonesian Fire Season - The Earth Polychromatic Imaging Camera aboard the DSCOVR satellite acquired this view of smoke drifting over the region. https://earthobservatory.nasa.gov/features/IndonesianFires/page4.php
21 NASA Earth Observatory Article: An EPIC Eclipse: Natural Hazards - The Deep Space Climate Observatory (DSCOVR) was built to provide a distinct perspective on our planet. https://earthobservatory.nasa.gov/images/87675/an-epic-eclipse
21 EPIC O3 Product Overview https://epic.gsfc.nasa.gov/science/products/o3
21 NASA Studies High Clouds, Saharan Dust from EPIC View https://www.nasa.gov/press-release/nasa-studies-high-clouds-saharan-dust-from-epic-view

Tags

  • atmospheric-radiation
  • atmosphere
  • atmospheric-chemistry
  • earth-science

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