Daytime Earth radiation budget determined from NISTAR and EPIC composites Version 1

Description

Deep Space Climate Observatory (DSCOVR) DSCOVR National Institute of Standards and Technology Advanced Radiometer (NISTAR) was specifically designed to measure the global daytime radiation budget for an entire hemisphere using active cavity radiometers for three channels: total (0.2 - 100 um), SW (0.2 - 4.0 um), and near-infrared (0.7 - 4.0 um). To derive the Earth Radiation Budget (ERB) from NISTAR measurements, the Short Wave (SW) radiances need to be unfiltered first before they can be subtracted from the total to yield the Long Wave (LW) (4 - 100 um) radiances. Additionally, the Earth's surface and atmosphere are anisotropic reflectors and emitters resulting in a relatively complex variation of radiance leaving the Earth as a function of the viewing and illumination. To convert radiance to flux requires the use of angular distribution models (ADMs) to account for the emittance and reflectance anisotropies. The anisotropies are characterized for all Earth Polychromatic Imaging Camera (EPIC) pixels by using the Clouds and the Earth’s Radiant Energy System (CERES) empirical angular distribution models (ADMs), which are functions of scene types which are defined using many variables including surface type, cloud amount, cloud phase, and optical depth, and water vapor. EPIC composite product is used to provide accurate scene type information. The EPIC composites are generated from cloud property retrievals from LEO/GEO imagers mapped into the EPIC pixels. 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 EPIC composite. The anisotropies at the EPIC-pixel are then used to calculate the global mean SW and LW anisotropic factors, which are then used to convert the NISTAR SW and LW radiances to fluxes. This product contains the time series of daytime Earth radiation budget derived from the NISTAR measurements.

Resources

Name Format Description Link
21 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.5067%2FNISTAR%2FDSCOVR%2FL2_FLX_01
21 How to cite ASDC data https://asdc.larc.nasa.gov/citing-data
21 NOAA's Weather and Climate Toolkit https://www.ncdc.noaa.gov/wct/
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: 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 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 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 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 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 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: 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: 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: 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 NOAA - National Climatic Data Center (NCDC) https://www.noaa.gov/
33 NISTAR Data Quality Report, May 17, 2019 https://asdc.larc.nasa.gov/documents/dscovr/DSCOVR_NISTAR_Data_Quality_Report_V3.pdf
33 NISTAR Data Format Control Book Specification April 1, 2019 https://asdc.larc.nasa.gov/documents/dscovr/DSCOVR_NISTAR_Data_Format_Control_Book_V3.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 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 Studies High Clouds, Saharan Dust from EPIC View https://www.nasa.gov/press-release/nasa-studies-high-clouds-saharan-dust-from-epic-view
33 Notice for Users of NISTAR L1B Data Products https://asdc.larc.nasa.gov/documents/dscovr/DSCOVR_NISTAR_L1B_Data_Quality_Advisory_V02.pdf
33 NISTAR Processing Description and Processing Algorithm Overview https://asdc.larc.nasa.gov/documents/dscovr/DSCOVR_NISTAR_Processing_V02.pdf
21 DOI data set landing page for DSCOVR_NISTAR_L2_FLX_01 https://doi.org/10.5067/NISTAR/DSCOVR/L2_FLX_01
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: 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: 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 ASDC Direct Data Download for DSCOVR_NISTAR_L2_FLX_01 https://asdc.larc.nasa.gov/data/DSCOVR/NIST/L2/FLX_01/
21 OPeNDAP data access for DSCOVR_NISTAR_L2_FLX_01 https://opendap.larc.nasa.gov/opendap/DSCOVR/NIST/L2/FLX_01/contents.html
33 DSCOVR Earth Science Instrument Overview https://asdc.larc.nasa.gov/documents/dscovr/DSCOVR_overview_2016-06-29.pdf
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
33 National Institute of Standards and Technology Advanced Radiometer (NISTAR) User’s Guide - September 9, 2015 For the Flight Operations Team https://asdc.larc.nasa.gov/documents/dscovr/DSCOVR_NISTAR_Users_Guide_V02.pdf
21 Earthdata Search for DSCOVR_NISTAR_L2_FLX_01 (NASA Application to search, discover, visualize, refine, and access NASA Earth Observation data) https://search.earthdata.nasa.gov/search/granules?p=C1573253314-LARC_ASDC

Tags

  • atmospheric-radiation
  • atmosphere
  • earth-science

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