DSCOVR EPIC L2 Ozone (O3), Sulfur Dioxide (SO2) Aerosol Index (AI) with Epic L1B V03 Input, Version 2

Description

Robust cloud products are critical for DSCOVR to make a significant contribution to climate studies. Building on our team’s track-record in cloud detection, cloud property retrieval, oxygen band exploitation, and DSCOVR-related studies, we propose to develop a suite of algorithms for generating the operational EPIC cloud mask, cloud height and cloud optical thickness products. Multichannel observations will be used for cloud masking; the cloud height will be developed with information from the oxygen A- and B- band pairs (780 nm vs. 779.5 nm and 680 nm vs. 687.75 nm); for the cloud optical thickness retrieval, we propose an approach that combines the EPIC 680 nm observations and numerical weather model outputs. Preliminary results from radiative transfer modeling and from proxy data applications show that the proposed algorithms are viable. Product validation will be conducted by comparing EPIC observations/retrievals with counterparts from coexisting Low Earth Orbit (LEO) and Geosynchronous Earth Orbit (GEO) satellites. The proposed work will include a rigorous uncertainty analysis based on theoretical and computational radiative transfer modeling that complements standard validation activities with physics-based diagnostics. We also plan to evaluate and improve the calibration of the EPIC O2 A- and B-band absorption channels through tracking the instrument performance over known targets, such as cloud free ocean and ice sheet surfaces. The deliverables for the proposed work include an Algorithm Theoretical Basis Document (ATBD) for peer-review, products generated with the proposed algorithms and supporting research articles. The data products, which will be archived at the Atmospheric Science Data Center (ASDC) at the NASA Langley Research Center, will provide essential inputs needed for the community to apply EPIC observations to climate research and to better interpret NISTAR observations. The proposed work directly responds to the solicitation to “develop and implement the necessary algorithms and processes to enable various data products from EPIC sunrise to sunset observations once on orbit”, and also for improving “the calibration of EPIC based on in-flight data”.

Resources

Name Format Description Link
21 DSCOVR EPIC Visualization Tool https://epic.gsfc.nasa.gov/
21 DOI data set landing page for DSCOVR_EPIC_L2_O3SO2AI_02 https://doi.org/10.5067/EPIC/DSCOVR/L2_O3SO2AI.002
21 How to cite ASDC data https://asdc.larc.nasa.gov/citing-data
33 EPIC Data Format Control Book Specification, Version 3, September 19, 2018 https://asdc.larc.nasa.gov/documents/dscovr/DSCOVR_EPIC_Data_Format_Control_Book_V03.pdf
33 DSCOVR - SPEC - 007 EPIC Level 0 to Level 1A Processing Algorithm Description Document https://asdc.larc.nasa.gov/documents/dscovr/DSCOVR_EPIC_L0_L1A_Processing_V03.pdf
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 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
33 DSCOVR Earth Science Instrument Overview https://asdc.larc.nasa.gov/documents/dscovr/DSCOVR_overview_2016-06-29.pdf
33 EPIC Data Format Control Book Specification July 1, 2016 https://asdc.larc.nasa.gov/documents/dscovr/EPIC_Data_Format_Control_Book_2016-07-01.pdf
33 EPIC Cloud Product Description https://asdc.larc.nasa.gov/documents/dscovr/EPICCloudProductDescription_Nov2017_1.pdf
21 ASDC Data and Information for DSCOVR https://asdc.larc.nasa.gov/project/DSCOVR
33 EPIC level 1 A & B Calibration factors table https://asdc.larc.nasa.gov/documents/dscovr/DSCOVR_EPIC_Calibration_Factors_V03.pdf
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: Zaatari Refugee Camp, Jordan: Image of the Day https://earthobservatory.nasa.gov/images/81818/zaatari-refugee-camp-jordan
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: 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 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: 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: 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 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 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_O3SO2AI_02 https://asdc.larc.nasa.gov/data/DSCOVR/EPIC/L2_O3SO2AI_02/
21 OPeNDAP data access for DSCOVR_EPIC_L2_O3SO2AI_02 https://opendap.larc.nasa.gov/opendap/DSCOVR/EPIC/L2_O3SO2AI_02/contents.html
21 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.5067%2FEPIC%2FDSCOVR%2FL2_O3SO2AI.002
33 EPIC Geolocation Quality Summary Algorithm Revision 06 Product Version 03 https://asdc.larc.nasa.gov/documents/dscovr/DSCOVR_EPIC_Geolocation_Quality_V03.pdf
33 EPIC Geolocation and Color Imagery Algorithm Revision 6 October 10, 2019 https://asdc.larc.nasa.gov/documents/dscovr/DSCOVR_EPIC_Geolocation_V03.pdf
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 Earth Observation Portal Page for DSCOVR Mission Information https://directory.eoportal.org/web/eoportal/satellite-missions/d/dscovr
21 NOAA overview of DSCOVR: Deep Space Climate Observatory https://www.nesdis.noaa.gov/content/dscovr-deep-space-climate-observatory
21 NASA Captures "EPIC" Earth Image Article from July 20, 2015 https://www.nasa.gov/image-feature/nasa-captures-epic-earth-image
21 A New Blue Marble By Scott Kelly, NASA Astronaut https://medium.com/@ObamaWhiteHouse/a-new-blue-marble-39c2fe1b5b3c?
21 NASA Goddard Twitter Page https://twitter.com/NASAGoddard/status/676462280469553154
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
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 Earthdata Search for DSCOVR_EPIC_L2_O3SO2AI_02 (NASA Application to search, discover, visualize, refine, and access NASA Earth Observation data) https://search.earthdata.nasa.gov/search/granules?p=C1715718433-LARC_ASDC
33 Description of the DSCOVR/EPIC volcanic SO2 Level 2 Algorithm https://asdc.larc.nasa.gov/documents/dscovr/EPICSO2_L2_summary_final.pdf
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: 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

Tags

  • atmosphere
  • atmospheric-chemistry
  • air-quality
  • earth-science

Topics

Categories