Land surface is coupled with the atmosphere, and thereby influences weather and climate, through modulating land-atmosphere exchanges of water, energy, and momentum and large-scale atmospheric circulation. While climate changehas been widely demonstrated to strongly alter land surface characteristics, such as soil moisture, vegetation, and snow, the feedback of land surface to the atmosphere remain underexplored. In this presentation, I would like to share my recent studies investigating how soil moisture-atmosphere feedbacks impact extreme weather and climate, surface water availability, and terrestrial ecosystem carbon uptake using in situ observations, satellite remote sensing retrievals, reanalysis products, and multi-model land-atmosphere coupling experiments.