EPIC-view satellite composites for DSCOVR, Version 1

Description

In DSCOVR_EPIC_L2_composite_01, cloud property retrievals from multiple imagers on low Earth orbit (LEO) satellites (including MODIS, VIIRS, and AVHRR) and geostationary (GEO) satellites (including GOES-13 and -15, METEOSAT-7 and -10, MTSAT-2, and Himawari-8) are used to generate the composite. All cloud properties were determined using a common set of algorithms, the Satellite ClOud and Radiation Property retrieval System (SatCORPS), based on the CERES cloud detection and retrieval system. Cloud properties from these LEO/GEO imagers are optimally merged together to provide a seamless global composite product at 5-km resolution by using an aggregated rating that considers five parameters (nominal satellite resolution, pixel time relative to the EPIC observation time, viewing zenith angle, distance from day/night terminator, and sun glint factor) and selects the best observation at the time nearest to the EPIC measurements. About 72% of the LEO/GEO satellite overpass times are within one hour of the EPIC measurements, while 92% are within two hours of the EPIC measurements. The global composite data are then remapped into the EPIC FOV by convolving the high-resolution cloud properties with the EPIC point spread function (PSF) defined with a half-pixel accuracy to produce the EPIC composite. PSF-weighted averages of radiances and cloud properties are computed separately for each cloud phase. Ancillary data (i.e. surface type, snow and ice map, skin temperature, precipitable water, etc.) needed for anisotropic factor selections are also included in the composite. These composite images are produced for each observation time of the EPIC instrument (typically 300 to 600 composites per month).

Resources

Name Format Description Link
21 DOI data set landing page for DSCOVR_EPIC_L2_COMPOSITE_01 https://doi.org/10.5067/EPIC/DSCOVR/L2_COMPOSITE_01
33 DSCOVR Earth Science Instrument Overview https://asdc.larc.nasa.gov/documents/dscovr/DSCOVR_overview_2016-06-29.pdf
33 EPIC level 1 A & B Calibration factors table https://asdc.larc.nasa.gov/documents/dscovr/DSCOVR_EPIC_Calibration_Factors_V02.pdf
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 Earth Observation Portal Page for DSCOVR Mission Information https://directory.eoportal.org/web/eoportal/satellite-missions/d/dscovr
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 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: 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: 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 OPeNDAP data access for DSCOVR_EPIC_L2_COMPOSITE_01 https://opendap.larc.nasa.gov/opendap/DSCOVR/EPIC/L2_COMPOSITE_01/contents.html
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 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.5067%2FEPIC%2FDSCOVR%2FL2_COMPOSITE_01
21 Earthdata Search for DSCOVR_EPIC_L2_COMPOSITE_01 (NASA Application to search, discover, visualize, refine, and access NASA Earth Observation data) https://search.earthdata.nasa.gov/search/granules?p=C1576365803-LARC_ASDC
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: 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: 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/
33 Description of the DSCOVR/EPIC volcanic SO2 Level 2 Algorithm https://asdc.larc.nasa.gov/documents/dscovr/EPICSO2_L2_summary_final.pdf
21 ASDC Data and Information for DSCOVR https://asdc.larc.nasa.gov/project/DSCOVR
21 DSCOVR EPIC Visualization Tool https://epic.gsfc.nasa.gov/
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
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 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 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 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: 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 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 ASDC Direct Data Download for DSCOVR_EPIC_L2_COMPOSITE_01 https://asdc.larc.nasa.gov/data/DSCOVR/EPIC/L2_COMPOSITE_01/
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

  • atmospheric-radiation
  • national-geospatial-data-asset
  • atmosphere
  • ngda
  • clouds
  • earth-science

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