Strengthening the three-dimensional comprehensive observation system of multi-layer interaction on the Tibetan Plateau to cope with the warming and wetting trend

Ma, Yaoming; Wang, Binbin; Chen, Xuelong; Zhong, Lei; Hu, Zeyong; Ma, Weiqiang; Han, Cunbo; Li, Maoshan

doi:10.1016/j.aosl.2022.100224

Cited by 4 publications

(6 citation statements)

References 30 publications

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“…The methods used to compute evaporation in LSMs differ from those of GLEAM, as LSMs rely on multiple land surface processes. However, over such a complex terrain with substantial glacial coverage, LSM models are limited because our understanding of the relevant physical processes and the model parameterizations is not mature (Ma et al., 2022).…”

Section: Methodsmentioning

confidence: 99%

Fate and Changes in Moisture Evaporated From the Tibetan Plateau (2000–2020)

Zhang,

Chen,

Tang

et al. 2023

Water Resources Research

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Total evaporation from the vast terrain of the Tibetan Plateau (TP) may strongly influence downwind regions. However, the ultimate fate of this moisture remains unclear. This study tracked and quantified TP‐originating moisture using an extended Eulerian model. The findings reveal that the involvement of moisture from the TP in the downwind precipitation is most pronounced near the eastern boundary of the TP and gradually diminishes eastward. Consequently, the TP moisture ratio in precipitation reaches the highest of over 30% over the central‐eastern TP. 44.9%–46.7% of TP annual evaporation is recycled over the TP, and 65.1%–66.8% of the TP evaporation is reprecipitated over terrestrial China. Moisture recycling of TP origin shows strong seasonal variation, with seasonal patterns largely determined by precipitation, evaporation and wind fields. High levels of evaporation and precipitation over the TP in summer maximize local recycling intensity and recycling ratios. Annual precipitation of TP origin increased mainly around the northeastern TP during 2000–2020. This region consumed more than half of the increased TP evaporation. Further analyses showed that changes in reprecipitation of TP origin were consistent with precipitation trends in nearby downwind areas: when intensified TP evaporation meets intensified precipitation, more TP moisture is precipitated out. The model estimated an annual precipitation recycling ratio (PRR) of 26.9%–30.8% in forward moisture tracking. However, due to the non‐closure issue of the atmospheric moisture balance equation, the annual PRR in backward tracking can be ∼6% lower.

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Section: Methodsmentioning

confidence: 99%

Fate and Changes in Moisture Evaporated From the Tibetan Plateau (2000–2020)

Zhang,

Chen,

Tang

et al. 2023

Water Resources Research

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“…Recently, the Second TP Scientific Expedition and Research established a comprehensive, three‐dimensional observation network over the TP to measure land–atmosphere interactions and ABL processes (Ma et al., 2022). This network consists of 28 ABL towers (each containing instruments to determine eddy covariance, five layers of air temperature, air humidity, wind speed, wind direction, radiation, rain gauge, five layers of soil temperature, and soil moisture, and two layers of soil heat flux), 10 microwave radiometers, 15 radiosonde systems, 10 blowing snow monitoring systems, and five wind profilers.…”

Section: Enhanced Observations and Land–atmosphere Interactionsmentioning

confidence: 99%

“…Zhao et al, 2018a). For this purpose, considerable effort has been devoted to constructing observational networks, culminating in the Tibetan Observation and Research Platform (Ma et al, 2008), and comprehensive three-dimensional observation networks for measuring land-atmosphere interactions and ABL processes (Ma et al, 2022). These data have greatly improved our understanding of climate characteristics, climate system variation, and land-atmosphere interactions over the TP.…”

Section: Enhanced Observations and Land-atmosphere Interactionsmentioning

confidence: 99%

“…Experimental and field investigations of hydrometeorology and land–atmosphere interactions over the TP, have a long history and can provide a basis for studying land surface processes and identifying the TP's effects on local, regional, and global climate change (Duan et al., 2011; Ma et al., 2006; X. Xu et al., 2002; P. Zhao et al., 2018a). For this purpose, considerable effort has been devoted to constructing observational networks, culminating in the Tibetan Observation and Research Platform (Ma et al., 2008), and comprehensive three‐dimensional observation networks for measuring land–atmosphere interactions and ABL processes (Ma et al., 2022). These data have greatly improved our understanding of climate characteristics, climate system variation, and land–atmosphere interactions over the TP.…”

Section: Enhanced Observations and Land–atmosphere Interactionsmentioning

confidence: 99%

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Global Climate Impacts of Land‐Surface and Atmospheric Processes Over the Tibetan Plateau

Huang

Zhou

et al. 2023

Reviews of Geophysics

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The Tibetan Plateau (TP) impacts local and remote atmospheric circulations, wherein it mechanically and thermally affects air masses or airflows. Moreover, the TP provides a key channel for substance transport between the troposphere and the stratosphere. This study reviews recent advances in research regarding land–atmosphere coupling processes over the TP. The TP experiences climate warming and wetting. Climate warming has caused glacier retreat, permafrost degradation, and a general increase in vegetation density, while climate wetting has led to a significant increase in the number of major lakes, primarily through increased precipitation. Local and regional climates are affected by interactions between the land and the atmosphere. Namely, the TP drives surface pollutants to the upper troposphere in an Asian summer monsoon (ASM) anticyclone circulation, before spreading to the lower stratosphere. Further, the thermal forcing of the TP plays an essential role in the ASM. TP forcing can modulate hemispheric‐scale atmospheric circulations across all seasons. The TP interacts with remote oceans through a forced atmospheric response and is substantially affected by the evolution of the Earth’s climate via promoting Atlantic meridional overturning circulation and eliminating Pacific meridional overturning circulation. The extensive influence of the TP is facilitated by its coupling with the ASM in the summer; whereas its winter influence on climate mainly occurs through Rossby waves. The observed increasing trends of temperature and precipitation over the TP are projected to continue throughout the 21st century.

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“…As a result of its specific geographical location and unique underlying surface condition, the TP has become the early warning and sensitive zone of global climate change (Cai et al, 2017; Pepin & Lundquist, 2008). With the global climate warming, the TP is experiencing rapid warming and wetting, which poses significant impacts on local and surrounding environment (Ma et al, 2022; Yang et al, 2014; Yao et al, 2019; Zhu et al, 2021). Therefore, it is worth carrying out studies on precipitation variation in the TP owing to its importance to the water cycle (Fu et al, 2020; Gong et al, 2022; Li et al, 2020; Liu & Yao, 2022; Ma et al, 2020a), especially the southern TP whose wetting is not significant since the late 1990s.…”

Section: Introductionmentioning

confidence: 99%

Interannual variation of midsummer precipitation in the middle reaches of Yarlung Zangbo River and its possible mechanisms

Yang,

Chi,

Zhou

et al. 2023

Intl Journal of Climatology

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Hydroclimatic process in Yarlung Zangbo River (YZR) plays a critical role in the water cycle of the whole Tibetan Plateau (TP), but there is a lack of understanding about it due to restrictive conditions. In this study, we further investigate the interannual variation characteristics and possible factors of midsummer (July–August) precipitation in the middle reaches of YZR (MYZR) based on the monthly precipitation data from four stations (Lhasa, Xigaze, Tsedang and Gyangze) in the Inner TP and ERA5 reanalysis dataset for the years 1961–2017. The results suggest that precipitation shows no obvious linear trend during the research period but is dominated by interannual oscillation with evident cycles of 3 years. Meanwhile, the interannual variation of precipitation is related to local changes of water vapour budget. The anomalous anticyclones over the Indian Peninsula‐Southeast Asia continuously transport water vapour from the western Pacific, South China Sea and Bay of Bengal (BOB) to the TP. Simultaneously, both the monsoon low and South Asia high in southern TP provide dynamic conditions for the convergence and uplift of water vapour.

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Strengthening the three-dimensional comprehensive observation system of multi-layer interaction on the Tibetan Plateau to cope with the warming and wetting trend

Cited by 4 publications

References 30 publications

Fate and Changes in Moisture Evaporated From the Tibetan Plateau (2000–2020)

Fate and Changes in Moisture Evaporated From the Tibetan Plateau (2000–2020)

Global Climate Impacts of Land‐Surface and Atmospheric Processes Over the Tibetan Plateau

Interannual variation of midsummer precipitation in the middle reaches of Yarlung Zangbo River and its possible mechanisms

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