Vertical air mass exchange driven by the local circulation on the northern slope of Mount Everest

Zhou, Libo; Han, Zhiwei; Ma, Shuai; Li, Peng; Zhu, Jieshun; Huo, Cuiping

doi:10.1007/s00376-010-9231-z

Cited by 8 publications

(7 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The weakened/strengthened DR is closely related to the strong/weak convections over the plateau region during the SASM active/break periods (see Figure 3). The strong/weak convections can result in more/less cloudiness, which further affects the solar radiation by blocking/enhancing effects [17,27,32]. Over the other stations, the NR differences are quite small; the difference in the daily averaged value was about 10 Wm −2 , with a range from 102.8 to 112.2 Wm −2 .…”

Section: The Impacts Of Sasm Evolution On the Radiation Heat Transfersmentioning

confidence: 93%

“…The SASM evolution could have great impacts on the weather and climate in Asia through general circulation changes [1,17,21,23,27,32]. The onset of SASM usually occurs at the end of May or early June in South Asia [33].…”

Section: Sasm Evolution and Synoptic Situationsmentioning

confidence: 99%

“…During the SASM break period, the SH largely strengthens over all stations, and with the strengths varying from 0.8% (at Ali) to 45.3% (at Nyainrong). Therefore, the sensible heat transfers over the plateau region can be affected by the SASM evolution, with the weakened/strengthened amplitudes over most stations during the SASM active/break periods, which are closely related to the weakened/strengthened radiation conditions [9,10,17,23,27,32]. However, these SASM impacts on the sensible heat transfer exhibit large inhomogeneity over the plateau regions.…”

Section: The Impacts Of Sasm Evolution On the Turbulent Heat Transfersmentioning

confidence: 99%

See 2 more Smart Citations

The Observed Impact of the South Asian Summer Monsoon on Land-Atmosphere Heat Transfers and Its Inhomogeneity over the Tibetan Plateau

Zhou

Wang

2022

Remote Sensing

Self Cite

View full text Add to dashboard Cite

To promote Tibetan meteorological research, the third Tibetan Plateau (TP) Experiment for atmospheric sciences (TIPEX III) has been carried out over the plateau region since 2014, with near-surface heat fluxes measured at different sites. Using the observational data of near-surface heat fluxes measured at 8 plateau stations in TIPEX III, as well as the ECMWF ERA Interim reanalysis data, the land-atmosphere heat transfers over different regions of TP and their responses to the South Asian summer monsoon (SASM) during active/break periods were investigated. Inhomogeneity was found in the land-atmosphere heat transfers over the plateau, with large differences among plateau stations. During the observation period, the daily averaged total heat transfer (the sum of sensible and latent heat flux) varied from 70.2 to 101.2 Wm−2 among the 8 plateau stations, with the sensible heat flux from 18.8 to 60.1 Wm−2 and the latent heat flux from 10.1 to 74.7 Wm−2. These heat transfers were strongly affected by the SASM evolution, but with strong inhomogeneities over the plateau stations. Overall, the more southern station locations exhibited more SASM impacts. The land-atmosphere heat transfers (the total, sensible and latent heat fluxes) were greatly weakened/strengthened during the SASM active/break period at Namco (southeast plateau), Baingoin (central plateau), Lhari (central plateau), and Nagqu (central plateau), which were closely related to the weakened/strengthened radiation conditions. However, the SASM impacts were quite small or even negligible for the other plateau stations, which complicated our conclusions, and further investigations are still needed.

show abstract

Section: The Impacts Of Sasm Evolution On the Radiation Heat Transfersmentioning

confidence: 93%

Section: Sasm Evolution and Synoptic Situationsmentioning

confidence: 99%

Section: The Impacts Of Sasm Evolution On the Turbulent Heat Transfersmentioning

confidence: 99%

See 1 more Smart Citation

The Observed Impact of the South Asian Summer Monsoon on Land-Atmosphere Heat Transfers and Its Inhomogeneity over the Tibetan Plateau

Zhou

Wang

2022

Remote Sensing

Self Cite

View full text Add to dashboard Cite

show abstract

“…The great inhomogeneity of the geographic features causes difficulties in understanding the local atmospheres and heat transfers in the Himalayas and in proving the boundary-layer parameterizations of numerical simulations and predictions. Shen and Gao (1975), Zou et al (2008) and Zhou et al (2011) revealed a distinct local atmospheric system with strong surface heating and down-valley air flow on the northern slope of Mt. Everest in the Middle Himalayas.…”

Section: Introductionmentioning

confidence: 98%

The local atmosphere and the turbulent heat transfer in the Eastern Himalayas

Han

et al. 2012

Adv. Atmos. Sci.

Self Cite

View full text Add to dashboard Cite

To understand the local atmosphere and heat transfer and to facilitate the boundary-layer parameterization of numerical simulation and prediction, an observational campaign was conducted in the Eastern Himalayas in June 2010. The local atmospheric properties and near-surface turbulent heat transfers were analyzed. The local atmosphere in this region is warmer, more humid and less windy, with weaker solar radiation and surface radiate heating than in the Middle Himalayas. The near-surface turbulent heat transfer in the Eastern Himalayas is weaker than that in the Middle Himalayas. The total heat transfer is mainly contributed by the latent heat transfer with a Bowen ratio of 0.36, which is essentially different from that in the Middle Himalayas and the other Tibetan regions.

show abstract

“…The strong solar radiation on the elevated surface makes the plateau a heating source for the atmosphere, specifically the middle troposphere. Surface heating not only generates multiscale atmospheric motions on the plateau but also controls the synoptic and climate systems in Asia and impacts atmospheric circulations around the world (Ye and Gao 1979;Yanai, Li, and Song 1992;Zhou et al 2008Zhou et al , 2009Zhou et al , 2011Zhou et al , 2012Zhou et al , 2013aZhou et al , 2013bMa et al 2013). Yanai, Li, and Song (1992); He et al (1987); Wu and Zhang (1998); and Wu et al (2012) revealed the impacts of Tibetan surface heating on the onset of the South Asian summer monsoon.…”

Section: Introductionmentioning

confidence: 99%

Observed heterogeneity in the local atmosphere and land–air heat exchange across complex terrain in the Tibetan mountains

Han

Zhou

et al. 2018

Arctic, Antarctic, and Alpine Research

Self Cite

View full text Add to dashboard Cite

Surface heating is important in terms of the thermal effect of the Tibetan Plateau on atmospheric systems in Asia. The complex mountain terrain across the Tibetan Plateau introduces small-scale heterogeneity in the local atmosphere and land-air heat exchange that biases our understanding of the Tibetan thermal effect and misleads boundary-layer parameterization for numerical studies and predictions. It is therefore essentially important to evaluate heterogeneity in the Tibetan mountains. An observational experiment was conducted in a small region with a complex landscape in the eastern Himalayas from June 9 to July 9, 2013. This study analyzes the observations of three major land covers and discusses the observed heterogeneity of the local atmosphere and land-air heat exchange. A heterogeneity rate is defined to approximately quantify the heterogeneity observed in the atmospheric properties and land-air heat exchange. Obvious heterogeneity is found in the local atmosphere across the complex terrain of the Eastern Himalayas, which could introduce uncertainties up to 33.3 percent in our knowledge related to the local weather and climate. A large heterogeneity is revealed in the land-air heat exchange, which would bias our understanding of total surface heating in this region up to 16 percent and of heating properties up to 62 percent. Therefore, attention should be given to the uncertainties introduced by small-scale heterogeneity in any weather and climate studies across a complex terrain, such as the eastern Himalayas. In addition, the heterogeneity rate provided could be a useful measure to generally identify the uncertainties in our understanding of the local atmosphere and land-air heat exchange across a complex terrain.

show abstract

Vertical air mass exchange driven by the local circulation on the northern slope of Mount Everest

Cited by 8 publications

References 14 publications

The Observed Impact of the South Asian Summer Monsoon on Land-Atmosphere Heat Transfers and Its Inhomogeneity over the Tibetan Plateau

The Observed Impact of the South Asian Summer Monsoon on Land-Atmosphere Heat Transfers and Its Inhomogeneity over the Tibetan Plateau

The local atmosphere and the turbulent heat transfer in the Eastern Himalayas

Observed heterogeneity in the local atmosphere and land–air heat exchange across complex terrain in the Tibetan mountains

Contact Info

Product

Resources

About