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Journal articles

Interannual variation of global net radiation flux as measured from space

Abstract : The global net radiation flux (NRF) in and out of the climate system at the top of the atmosphere (TOA) varies at interannual time scales, reflecting the complexity of the processes responsible for attaining global energy equilibrium. These processes are investigated in this study using the previously unexplored data acquired by a bolometric type sensor installed in the PICARD microsatellite. The obtained anomalies in the NRF (PICARD-NRF) are compared to the global NRF changes at the TOA measured by the Clouds and Earth's Radiant Energy System mission (CERES-NRF). The interanual PICARD-NRF is strongly correlated with the matching period CERES-NRF; the bootstrapped correlation at the 95%( +0.85 and +0.97) confidence intervals(CIs) is +0.93. Consistency in the interannual variability in the NRF derived by two completely independent measurement systems enhances confidence in the estimated magnitude of these variations. To reveal the possible drivers of the NRF interannual variability, the NRF values were compared with the multivariate El Niño Southern Oscillation index (ENSO).
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Ping Zhu, Martin Wild, Michel Van Ruymbeke, Gérard Thuillier, Mustapha Meftah, et al.. Interannual variation of global net radiation flux as measured from space. Journal of Geophysical Research: Atmospheres, American Geophysical Union, 2016, 121 (12), pp.6877-6891. ⟨10.1002/2015JD024112⟩. ⟨insu-01328544⟩



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