Year: 2025
Type: article
Abstract: The Triple Ionosphere Photometer (TRIPM) is a scientific payload aboard the Fengyun-3E (FY-3E) satellite, which operates in a dawn−dusk orbit. It is primarily designed for nadir observations of airglow emissions at OI 135.6 nm and N2 Lyman-Birge-Hopfield (LBH) bands. Due to the satellite’s dawn−dusk orbital characteristics, most of TRIPM’s field of view remains in a semi-illuminated condition. Therefore, compared with airglow data of the same bands acquired under purely daytime or nighttime conditions, applying TRIPM data poses greater challenges. This study presents the first attempt to use TRIPM data for retrieving solar extreme ultraviolet (EUV) flux. Our results demonstrate that by utilizing TRIPM data in regions where photoelectron excitation dominates as the primary radiation source, the solar EUV flux (denoted as QEUV) can be retrieved. Comparisons with data from the SOHO/SEM instrument reveal excellent consistency, with a seasonal correlation coefficient (R) of at least 0.95. This work thus offers a new avenue for solar EUV flux acquisition and expands the application range of TRIPM data.
Source: Earth and Planetary Physics
DOI: 10.26464/epp2026006
Authors: Jiang Fang, Mao Tian, Wang JinSong, Hu XiuQing, Song Qian, Fu LiPing, Jia Nan, Wang TianFang
Institution: China Meteorological Administration
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,324
Awards: G3651787551, G4802847309, G6020228717
OpenAlex ID: W7083712906
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