Articles | Volume 26, issue 20
Hydrol. Earth Syst. Sci., 26, 5411–5429, 2022
https://doi.org/10.5194/hess-26-5411-2022
Hydrol. Earth Syst. Sci., 26, 5411–5429, 2022
https://doi.org/10.5194/hess-26-5411-2022
Research article
28 Oct 2022
Research article | 28 Oct 2022

Understanding the diurnal cycle of land–atmosphere interactions from flux site observations

Eunkyo Seo and Paul A. Dirmeyer

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Short summary
This study presents the climatology of the observed land–atmosphere interactions on a subdaily timescale during the warm season from flux site observations. Multivariate metrics are employed to examine the land, atmosphere, and combined couplings, and a mixing diagram is adopted to understand the coevolution of the moist and thermal energy budget within the atmospheric mixed layer. The diurnal cycles of both mixing diagrams and hourly land–atmosphere couplings exhibit hysteresis.