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@INPROCEEDINGS{Zhang:1022146,
author = {Zhang, Yikui and Wangner, NIklas and Görgen, Klaus and
Kollet, Stefan},
title = {{L}inking the atmospheric water cycle and land-atmosphere
coupling from fully coupled {TSMP} simulations through a
novel atmospheric moisture analysis framework},
reportid = {FZJ-2024-01267},
year = {2023},
abstract = {The alterations in land-atmosphere coupling, caused by
greenhouse gas forcing and human water use, have a
significant impact on the atmospheric water balance.
However, detecting and attributing these effects under
multiple anthropogenic forcings is challenging, partly
because a number of confounding interactions often influence
the variables used in analyses. Moreover, the lack of
climatologies of the coupled groundwater to atmosphere
system, that consistently represent scenarios under
anthropogenic interventions, limits the detection of
individual contributing factors. As part of the DETECT
Collaborative Research Centre (https://sfb1502.de/), we
address these challenges, through fully-coupled terrestrial
system, groundwater-to-atmosphere simulations with the
Terrestrial Systems Modelling Platform
(https://www.terrsysmp.org/) regional climate system model.
The ERA5 reanalysis-driven evaluation runs are conducted
with and without an irrigation scheme over the COrdinated
Regional Downscaling EXperiment (CORDEX) EUR-11 domain at
about 12km resolution from 1979 to 2021. Simulations also
contribute in parts to the new ensemble of CORDEX regional
climate scenarios. Additionally, we are developing a
physically-based diagnostics and analysis framework to
detect and attribute the impacts of GHG forcing and
irrigation on the atmospheric water cycle and L-A coupling
strength based on our simulations. From the perspective of
the atmospheric moisture budget, so far, we established a
proportionality relationship between cloud water content and
rainwater content based on the atmospheric water balance
equation. By incorporating microphysics and statistical
relationships, we represent evapotranspiration and
precipitation using surface specific humidity and total
water vapor. This preliminary framework enables to draw a
direct connection of moisture terms from the near surface to
the troposphere, providing insights into the interactions
within the atmospheric water cycle. Moreover, we anticipate
that the proportionality relationship between cloud and
rainwater content can elucidate how thermodynamic and
dynamic factors, such as the wind field and circulation
changes, influence cloud and precipitation formation and
quantify the land-atmosphere coupling strength.},
month = {Sep},
date = {2023-09-25},
organization = {TERENO 2023, Bonn (Germany), 25 Sep
2023 - 29 Sep 2023},
subtyp = {Other},
cin = {IBG-3},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {2173 - Agro-biogeosystems: controls, feedbacks and impact
(POF4-217) / SFB 1502 D02 - Simulation anthropogen bedingter
Veränderungen in regionalen Wasser- und Energiekreisläufen
(D02) (495897999)},
pid = {G:(DE-HGF)POF4-2173 / G:(GEPRIS)495897999},
typ = {PUB:(DE-HGF)6},
url = {https://juser.fz-juelich.de/record/1022146},
}