This title appears in the Scientific Report :
2023
Interactions between the atmosphere and the land surface at night under semi-arid conditions
Interactions between the atmosphere and the land surface at night under semi-arid conditions
Most studies on water flow dynamics within the soil-plant-atmosphere system focus on the daytime, but not on the processes at night. Evapotranspiration (ET), which is the second largest water flow in the global terrestrial water cycle after precipitation, occurs mainly during the day. There is, howe...
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Personal Name(s): | Groh, Jannis (Corresponding author) |
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Pütz, Thomas / Graf, Alexander / Vanderborght, Jan / Price, jeremy / Marti, Belén / Martínez-Villagrasa, Daniel / Cuxart, Joan | |
Contributing Institute: |
Agrosphäre; IBG-3 |
Imprint: |
2023
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Conference: | 1ST LIAISE CONFERENCE AND DETERMINING EVAPOTRANSPIRATION CROSSCUT WORKSHOP, Lleida (Spain), 2023-03-27 - 2023-03-29 |
Document Type: |
Poster |
Research Program: |
Agro-biogeosystems: controls, feedbacks and impact |
Publikationsportal JuSER |
Most studies on water flow dynamics within the soil-plant-atmosphere system focus on the daytime, but not on the processes at night. Evapotranspiration (ET), which is the second largest water flow in the global terrestrial water cycle after precipitation, occurs mainly during the day. There is, however, evidence that a considerable amount of water loss through ET also occurs at night. Nocturnal water losses are counteracted by the formation of non-rainfall water inputs (NRW) from dew formation, fog, and water vapour adsorption. To better capture the interplay of different nocturnal water fluxes, observations and models need to account not only for evaporation and transpiration processes, but also on formation of NRW inputs. This is particularly important for arid and semi-arid areas, where every drop of water counts, as the ecosystems there can only draw on limited water resources. We used a high precision weighable lysimeter, a leaf wetness sensor and meteorological observation to quantify nocturnal water fluxes and identify which mechanisms govern nocturnal water fluxes under water limited conditions during the intensive measurement campaign of LIAISE in July 2021. |