Earth Observations from DSCOVR EPIC Instrument

Simple item page
dc.contributor.authorMarshak, Alexander
dc.contributor.authorHerman, Jay
dc.contributor.authorSzabo, AdaM
dc.contributor.authorBlank, Karin
dc.contributor.authorCarn, SiMon
dc.contributor.authorCede, Alexander
dc.contributor.authorGeogdzhayev, Igor
dc.contributor.authorHuang, Dong
dc.contributor.authorHuang, Liang -Kang
dc.contributor.authorKnyazikhin, Yuri
dc.contributor.authorKowalewski, Matthew
dc.contributor.authorKrotkov, Nickolay
dc.contributor.authorLyapustin, Alexei
dc.contributor.authorMcpeters, Richard
dc.contributor.authorMeyer, Kerry g.
dc.contributor.authorTorres, OMar
dc.contributor.authorYang, Yuekui
dc.date.accessioned2023-01-19T17:56:51Z
dc.date.available2023-01-19T17:56:51Z
dc.date.issued2018-09-01
dc.description.abstractThe National Oceanic and Atmospheric Administration (NOAA) Deep Space Climate Observatory (DSCOVR) spacecraft was launched on 11 February 2015 and in June 2015 achieved its orbit at the first Lagrange point (L1), 1.5 million km from Earth toward the sun. There are two National Aeronautics and Space Administration (NASA) Earth-observing instruments on board: the Earth Polychromatic Imaging Camera (EPIC) and the National Institute of Standards and Technology Advanced Radiometer (NISTAR). The purpose of this paper is to describe various capabilities of the DSCOVR EPIC instrument. EPIC views the entire sunlit Earth from sunrise to sunset at the backscattering direction (scattering angles between 168.5° and 175.5°) with 10 narrowband filters: 317, 325, 340, 388, 443, 552, 680, 688, 764, and 779 nm. We discuss a number of preprocessing steps necessary for EPIC calibration including the geolocation algorithm and the radiometric calibration for each wavelength channel in terms of EPIC counts per second for conversion to reflectance units. The principal EPIC products are total ozone (O₃) amount, scene reflectivity, erythemal irradiance, ultraviolet (UV) aerosol properties, sulfur dioxide (SO₂) for volcanic eruptions, surface spectral reflectance, vegetation properties, and cloud products including cloud height. Finally, we describe the observation of horizontally oriented ice crystals in clouds and the unexpected use of the O₂ B-band absorption for vegetation properties.en_US
dc.description.sponsorshipThe NASA GSFC DSCOVR project is funded by NASA Earth Science Division. We gratefully acknowledge the work by S. Taylor and B. Fisher for help with the SO2 retrievals and Marshall Sutton, Carl Hostetter, and the EPIC NISTAR project for help with EPIC data. We also would like to thank the EPIC Cloud Algorithm team, especially Dr. Gala Wind, for the contribution to the EPIC cloud products.en_US
dc.description.urihttps://journals.ametsoc.org/view/journals/bams/99/9/bams-d-17-0223.1.xmlen_US
dc.format.extent22 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m2yyok-ll48
dc.identifier.citationMarshak, Alexander, Jay Herman, Szabo Adam, Blank Karin, Simon Carn, Alexander Cede, Igor Geogdzhayev, Dong Huang, Liang-Kang Huang, Yuri Knyazikhin, Matthew Kowalewski, Nickolay Krotkov, Alexei Lyapustin, Richard McPeters, Kerry G. Meyer, Omar Torres, and Yuekui Yang. "Earth Observations from DSCOVR EPIC Instrument", Bulletin of the American Meteorological Society 99, 9 (2018): 1829-1850, accessed Jan 11, 2023, https://doi.org/10.1175/BAMS-D-17-0223.1en_US
dc.identifier.urihttps://doi.org/10.1175/BAMS-D-17-0223.1
dc.identifier.urihttp://hdl.handle.net/11603/26679
dc.language.isoen_USen_US
dc.publisherAMSen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Joint Center for Earth Systems Technology
dc.relation.ispartofUMBC Faculty Collection
dc.rightsThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.en_US
dc.rightsPublic Domain Mark 1.0*
dc.rights.urihttp://creativecommons.org/publicdomain/mark/1.0/*
dc.titleEarth Observations from DSCOVR EPIC Instrumenten_US
dc.typeTexten_US
dcterms.creatorhttps://orcid.org/0000-0002-9146-1632en_US

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
1520-0477-bams-d-17-0223.1.pdf
Size:
17.82 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
2.56 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

UMBC Joint Center for Earth Systems Technology (JCET)
UMBC Faculty Collection