Articles | Volume 11, issue 1
Research article
11 Jan 2018
Research article |  | 11 Jan 2018

Synoptic ozone, cloud reflectivity, and erythemal irradiance from sunrise to sunset for the whole earth as viewed by the DSCOVR spacecraft from the earth–sun Lagrange 1 orbit

Jay Herman, Liang Huang, Richard McPeters, Jerry Ziemke, Alexander Cede, and Karin Blank

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Cited articles

Atmospheric Science Data Center (ASDC): DSCOVR Data and Information, DSCOVR EPIC L2 AER, TO3, and SO2 Product Release, NASA Official: John M. Kusterer, Site Curator: NASA Langley ASDC User Services, available at:, 2017. 
Bodrogi, P. and Khanh, T. Q.: Illumination, Color and Imaging: Evaluation and Optimization of Visual Displays, Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, Germany, 2012. 
Brion, J., Chakir, A., Daumont, D., Malicet, J., and Parisse, C.: High-resolution laboratory absorption cross section of O3. Temperature effect, Chem. Phys. Lett., 213, 610–612, 1993. 
Brion, J., Chakir, A., Charbonnier, J., Daumont, D., Parisse, C., and Malicet, J.: Absorption spectra measurements for the ozone molecule in the 350–830 nm region, J. Atmos. Chem., 30, 291–299, 1998. 
Broadbent, A. D.: A critical review of the development of the CIE1931 RGB color-matching functions, Color Res. Appl. 29, 267–272,, 2004. 
Short summary
We launched the DSCOVR spacecraft to an orbit located near the earth–sun gravitational plus centrifugal force balance point known as Lagrange 1. One of the earth-viewing instruments, EPIC, measures earth-reflected radiances in 10 wavelength channels ranging from 317.5 nm to 779.5 nm. We use the UV channels to retrieve O3 and scene reflectivity, and to derive the first measurement of erythemal flux (sunburn) from sunrise to sunset at the earth's surface.