Interactions Between the Amazonian Rainforest and Cumuli Clouds: A Large-Eddy Simulation, High-Resolution ECMWF, and Observational Intercomparison Study

摘要: The explicit coupling at meter and second scales of vegetation's responses to the atmospheric‐boundary layer dynamics drives a dynamic heterogeneity that influences canopy‐top fluxes cloud formation. Focusing on representative day during Amazonian dry season, we investigate diurnal cycle energy, moisture carbon dioxide canopy top, transition from clear cloudy conditions. To this end, compare results large‐eddy simulation technique, high‐resolution global weather model, complete observational data set collected GoAmazon14/15 campaign. overall model‐observation comparisons radiation fluxes, turbulence, are very satisfactory, with all modeled variables lying within standard deviation monthly aggregated observations. Our analysis indicates timing change in daylight exchange, sink source, remains uncertain is probably related stomata closure caused by increase vapor pressure deficit afternoon. We demonstrate quantitatively heat transport subcloud into misrepresented yielding low values specific humidity thermal instability above base. Finally, numerical simulations adequate settings for benchmarking more comprehensive studies plant responses, microphysics,