Precipitation changes in the Qilian Mountains associated with the shifts of regional atmospheric water vapour during 1960–2014

Wang, Xuejia; Pang, Guojin; Yang, Meixue; G, Wan

doi:10.1002/joc.5673

Cited by 32 publications

(11 citation statements)

References 64 publications

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“…The variation of precipitation efficiency is related to the dominant midlatitude westerly regime, seasonal monsoon settlement in the lower atmosphere, and the blocking effect of topography. Precipitation during the summertime in upper HRB is mainly related to the ascent of monsoonal moisture from southeast China by prevailing East Asian Monsoon (Chen et al, ; Li et al, ; Wang et al, ; Wang, Pang, et al, ). This effect is also revealed by the spatial pattern of tagged precipitation, as more tagged precipitation falls at the high mountain peaks around northwestern part of the upper HRB in comparison to the southeastern part and valley area (Figure a), resulting in higher tagged precipitation recycling in the northwest part of upper HRB (Figure b).…”

Section: Resultsmentioning

confidence: 99%

Impact of Lateral Terrestrial Water Flow on Land‐Atmosphere Interactions in the Heihe River Basin in China: Fully Coupled Modeling and Precipitation Recycling Analysis

et al. 2019

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Lateral terrestrial water flow is usually not considered in regional climate modeling. This study focuses on the impact of increased hydrological model complexity for the description of the land-atmosphere interactions in a complex terrain region. For this purpose, we apply the Weather Research and Forecasting (WRF) model with its hydrological modeling extension package WRF-Hydro for the case of the Heihe River Basin in convection permitting atmospheric resolution (3 km). The Heihe River Basin (143,200 km 2 ) is an arid-semiarid inland river basin in Northwestern China. By comparing model simulations results with and without coupling for the period 2008-2010, the effect of lateral terrestrial water flow on land-atmosphere interactions is evaluated with a joint atmospheric-terrestrial water budget analysis, a regional precipitation recycling analysis and a fully three-dimensional atmospheric moisture tracing method (evaporation tagging). The coupled modeling system WRF-Hydro simulates near-surface temperature and precipitation variability similar to the WRF model and demonstrates, in addition, its ability to reproduce daily streamflow. In the fully coupled mode, as a consequence of lateral terrestrial water flow description, the redistribution of infiltration excess in the mountainous area produces higher soil moisture content in the root zone, increases the terrestrial water storage and evapotranspiration, and decreases the total runoff. The resulting wetting and cooling in the near surface affects the regional climate by changing the regional water vapor transports and water vapor content, while, in turn, inducing precipitation differences. Overall, the fully coupled modeling increases the recycling rate, indicating that lateral terrestrial water flow influences regional climate in our study area.With the increase of computational resources in high-resolution Earth System Models, the role of land surface spatial variability on modeling results is more and more emphasized (Clark et al., 2015;Gao et al., 2008).

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Section: Resultsmentioning

confidence: 99%

Impact of Lateral Terrestrial Water Flow on Land‐Atmosphere Interactions in the Heihe River Basin in China: Fully Coupled Modeling and Precipitation Recycling Analysis

et al. 2019

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“…A rise in tropospheric water vapour may result in increases in both the frequency and intensity of heavy precipitation (Mishra and Liu, 2014). It is reported that F I G U R E 1 Difference in the integrated precipitable water (IPW) (kgÁm -2 ) from 1980-1998to 1999-2018(IPW 1999-2018-IPW 1980-1998 ) from Modern Era Retrospective-Analysis for Research and Application (MERRA 2) model reanalysis tropospheric warming can increase the availability of atmospheric water vapour.…”

Section: Resultsmentioning

confidence: 99%

“…Wang et al . () linked the changes in precipitation patterns with shifts in regional atmospheric water vapour. Increased atmospheric water vapour over various parts of the globe shows large variability.…”

Section: Introductionmentioning

confidence: 99%

Variability of integrated precipitable water over India in a warming climate

Mishra

2019

Meteorological Applications

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Changes in precipitation patterns as a result of increased atmospheric water vapour in a warming environment over the Indian region have been reported in the past few decades. However, these studies have not focused much on exploring the changes in atmospheric water vapour in a changing climate. The present study focuses on examining the variability of integrated precipitable water (IPW) over the Indian region derived from the Modern Era Retrospective‐Analysis for Research and Application (MERRA 2) model in a warming environment. The results suggest that the IPW has increased significantly in recent decades. Changes in the IPW are consistent with changes in regional warming over India. The results also point out an increase of about 4.98% ± 1.26% in the IPW for a 1°C increase in regional warming. The variability of IPW has been examined in a warming climate. An increase in regional temperature shows coherent variation with IPW. A decadal increase of about 1.69% has been reported in the IPW.

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“…For example, the lateral flow was found to have a more pronounced enhancement of summer precipitation in West Africa than in Europe (Arnault et al, 2021), since West Africa is considered as a hot spot of soil moisture‐atmosphere coupling (e.g., Koster et al, 2004). Being characterized by a semiarid‐arid environment and high mountain terrain, our study area is not placed within the hot spots of land‐atmosphere coupling (Koster et al, 2004), meanwhile, studies have shown that local precipitation is mainly modulated by remote atmospheric water transport (e.g., Wang, et al, 2018; Zhang et al, 2021). For this reason, representing lateral flow in the WRF model does not considerably change or degrade the model performance of simulated meteorological variables and energy fluxes at a diurnal scale over the study area.…”

Section: Discussionmentioning

confidence: 99%

Diurnal cycle of surface energy fluxes in high mountain terrain: High‐resolution fully coupled atmosphere‐hydrology modelling and impact of lateral flow

Zhang

Arnault

Laux

et al. 2021

Hydrological Processes

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Water and energy fluxes are inextricably interlinked within the interface of the land surface and the atmosphere. In the regional earth system models, the lower boundary parameterization of land surface neglects lateral hydrological processes, which may inadequately depict the surface water and energy fluxes variations, thus affecting the simulated atmospheric system through land‐atmosphere feedbacks. Therefore, the main objective of this study is to evaluate the hydrologically enhanced regional climate modelling in order to represent the diurnal cycle of surface energy fluxes in high spatial and temporal resolution. In this study, the Weather Research and Forecasting model (WRF) and coupled WRF Hydrological modelling system (WRF‐Hydro) are applied in a high alpine catchment in Northeastern Tibetan Plateau, the headwater area of the Heihe River. By evaluating and intercomparing model results by both models, the role of lateral flow processes on the surface energy fluxes dynamics is investigated. The model evaluations suggest that both WRF and coupled WRF‐Hydro reasonably represent the diurnal variations of the near‐surface meteorological fields, surface energy fluxes and hourly partitioning of available energy. By incorporating additional lateral flow processes, the coupled WRF‐Hydro simulates higher surface soil moisture over the mountainous area, resulting in increased latent heat flux and decreased sensible heat flux of around 20–50 W/m2 in their diurnal peak values during summertime, although the net radiation and ground heat fluxes remain almost unchanged. The simulation results show that the diurnal cycle of surface energy fluxes follows the local terrain and vegetation features. This highlights the importance of consideration of lateral flow processes over areas with heterogeneous terrain and land surfaces.

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Precipitation changes in the Qilian Mountains associated with the shifts of regional atmospheric water vapour during 1960–2014

Cited by 32 publications

References 64 publications

Impact of Lateral Terrestrial Water Flow on Land‐Atmosphere Interactions in the Heihe River Basin in China: Fully Coupled Modeling and Precipitation Recycling Analysis

Impact of Lateral Terrestrial Water Flow on Land‐Atmosphere Interactions in the Heihe River Basin in China: Fully Coupled Modeling and Precipitation Recycling Analysis

Variability of integrated precipitable water over India in a warming climate

Diurnal cycle of surface energy fluxes in high mountain terrain: High‐resolution fully coupled atmosphere‐hydrology modelling and impact of lateral flow

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