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GOES-R Series X-Ray Sensor (XRS): 2. On-Orbit Measurements and Calibrations
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DOI：10.1029/2026JA035181.png)
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Abstract
En 中文
An X-Ray Sensor (XRS) has been onboard each of the National Oceanic and Atmospheric Administration (NOAA) Geostationary Operational Environmental Satellites (GOES) since 1975. XRS measures full-disk soft X-ray irradiance in two wavelength bands, 0.05-0.4 nm and 0.1-0.8 nm. The measurements are used to define solar flare magnitudes, to provide first alerts of major space weather events, and to support a variety of solar and space weather research. The XRS sensors on the GOES-R series (GOES-16 through GOES-19) have a new instrument design with Si photodiodes instead of ionization cells, multiple channels to provide an increased dynamic range, the use of quadrant photodiodes for real-time flare location measurements, and improved pre-flight radiometric calibrations. The in-flight solar XRS measurements and data products from GOES-16 through GOES-19 are presented here, and the design and pre-flight calibration results are presented in Woods et al. (2024), https://doi.org/10.1029/2024ja032925. In addition to improved 1-s and 1-min irradiance data products, a variety of new XRS data products are provided including a flare summary, flare location, and a multi-decade composite flare report.
Keywords:
solar flares
space weather
solar irradiance
GOES
EXIS
XRS
Journal
J
IF:
2.9
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268
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0
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