Advancing understanding of land–atmosphere interactions by breaking discipline and scale barriers

Abstract

Vegetation and atmosphere processes are coupled through a myriad of interactions linking plant transpiration, carbon dioxide assimilation, turbulent transport of moisture, heat and atmospheric constituents, aerosol formation, moist convection, and precipitation. Advances in our understanding are hampered by discipline barriers and challenges in understanding the role of small spatiotemporal scales. In this perspective, we propose to study the atmosphere-ecosystem interaction as a continuum by integrating leaf to regional scales (multiscale) and integrating biochemical and physical processes (multiprocesses). The challenges ahead are (1) How do clouds and canopies affect the transferring and in-canopy penetration of radiation, thereby impacting photosynthesis and biogenic chemical transformations? (2) How is the This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

The Benefits and Challenges of Downscaling a Global Reanalysis with Doubly-Periodic Large-Eddy Simulations

“…As we will demonstrate, such high resolution LESs are needed to capture high frequency interactions between solar radiation and clouds, which is a key process required to advance our understanding of land-atmosphere interactions (e.g. Gentine et al, 2019;Vilà-Guerau de Arellano et al, 2023).…”

“…This includes -in the context of this paper -the complex interaction between turbulence, moist convection, radiative transfer, and the land-surface (e.g. Huang & Margulis, 2011;Rieck et al, 2014;Pedruzo-Bagazgoitia et al, 2017;Veerman et al, 2020;Vilà-Guerau de Arellano et al, 2023).…”

Observational relationships between ammonia, carbon dioxide and water vapor under a wide range of meteorological and turbulent conditions: RITA-2021 campaign

“…Our aim is to relate NH 3 and CO 2 fluxes in order to advance our understanding of NH 3 stomatal exchange. These surface exchanges need to be related to the sensible and latent heat fluxes and to the diurnal boundary layer dynamics (Vilà- Guerau de Arellano et al, 2023). Utilizing recent developments in NH 3 measurement techniques, we combine high-quality miniDOAS F NH 3 observations with measurements of both CO 2 and water vapor fluxes as well as with other meteorological variables.…”

The Benefits and Challenges of Downscaling a Global Reanalysis With Doubly‐Periodic Large‐Eddy Simulations

“…As such, LES can potentially be a useful tool to downscale a global reanalysis, and provide details about small scale processes which are unresolved by its host model (e.g., Gustafson et al., 2020; Neggers et al., 2012). This includes—in the context of this paper—the complex interaction between turbulence, moist convection, radiative transfer, and the land‐surface (e.g., Huang & Margulis, 2011; Pedruzo‐Bagazgoitia et al., 2017; Rieck et al., 2014; Veerman et al., 2020; Vilà‐Guerau de Arellano et al., 2023).…”

“…This makes the simulations computationally cheaper, or allows the use of a finer computational mesh and hence resolve turbulence on smaller scales. As we will demonstrate, such high resolution LESs are needed to capture high frequency interactions between solar radiation and clouds, which is a key process required to advance our understanding of land-atmosphere interactions (e.g., Gentine et al, 2019;Vilà-Guerau de Arellano et al, 2023).…”