Validation and application of reanalysis temperature data over the Tibetan Plateau

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

doi:10.1007/s13351-014-3027-5

Cited by 30 publications

(33 citation statements)

References 25 publications

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“…Associated with the TP warming, the snow depth is found to significantly decrease in southeastern TP (Figure f), which could amplify the warming there [ Y. Xu et al , ]. The observed warming in recent decades is also the most significant in the marginal areas of TP [ Zou et al , ]. Our simulations suggest an alternative contributor, i.e., the anthropogenic BC, to the observed warming over TP, besides the global warming.…”

Section: Resultsmentioning

confidence: 99%

Anthropogenic aerosol effects on East Asian winter monsoon: The role of black carbon‐induced Tibetan Plateau warming

et al. 2017

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This study investigates anthropogenic aerosol effects on East Asian winter monsoon (EAWM) with Community Atmospheric Model version 5. In winter, the anthropogenic aerosol optical depth is the largest over southern East Asia and adjacent oceans. The associated EAWM change, however, is the most significant in northern East Asia, which is characterized by a significant surface cooling in northern East Asia and an acceleration of the jet stream around 40°N, indicating an intensification of the EAWM northern mode. Such an intensification is attributed to anthropogenic black carbon (BC)‐induced Tibetan Plateau (TP) warming. The BC is mostly transported from northern South Asia by wintertime westerly and southwesterly and then deposited on snow, giving rise to a reduction of surface albedo and an increase of surface air temperature via the snow‐albedo feedback. The TP warming increases meridional temperature gradient and lower tropospheric baroclinicity over northern East Asia, leading to the jet stream acceleration around 40°N and the westward shift of East Asian major trough via the transient eddy‐mean flow feedback. Such upper tropospheric pattern favors more cold air outbreak, leading to a large surface cooling in northern East Asia. In southern East Asia, the effect of nonabsorbing aerosols is dominant. The solar flux at surface is significantly reduced directly by scattering of nonabsorbing aerosols and indirectly by intensification of short wave cloud forcing. Accordingly, the surface air temperature in southern East Asia is reduced. The precipitation is also significantly reduced in South China and Indo‐China Peninsula, where the aerosol indirect effect is the largest.

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Section: Resultsmentioning

confidence: 99%

Anthropogenic aerosol effects on East Asian winter monsoon: The role of black carbon‐induced Tibetan Plateau warming

et al. 2017

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“…Recent studies [e.g., Wang and Zeng , ; Bao and Zhang , ; Zou et al ., ] have found that global reanalysis products contain large errors in surface meteorological variables and are not suitable for surface processes modeling for the TP. In this study, a long‐term (1979–2014) forcing data set developed by the hydrometeorological research group at the Institute of Tibetan Plateau Research, Chinese Academy of Sciences (ITPCAS) was used to drive the Flake model.…”

Section: Study Area and Datamentioning

confidence: 99%

Quantifying evaporation and its decadal change for Lake Nam Co, central Tibetan Plateau

et al. 2016

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Most lakes in the interior Tibetan Plateau have expanded rapidly since the late 1990s. Because of a lack of observations, lake water balances and their changes are far from well understood. Evaporation is a component of the lake water balance, and this study quantifies its magnitude, decadal change, and its contribution to the water balance changes in Lake Nam Co, one of the largest lakes on the Tibetan Plateau (with an area of approximately 2000 km2 and a mean depth of approximately 40 m). The lake temperature and the evaporation are simulated by the Flake model. The simulation results are validated against observed lake temperature profile from 2013 and Moderate Resolution Imaging Spectroradiometer lake surface temperature data from 2000 to 2014. The simulated latent heat flux and sensible heat flux are validated against Bowen ratio‐derived estimates for 2013. Based on the validated simulation results, the long‐term mean annual evaporation is approximately 832 ± 69 mm, and this value is much less than the potential evaporation estimated using the Penman‐Monteith equation. The annual evaporation from 1980 to 2014 displays a complex decadal oscillation, mainly due to the changes in energy‐related terms (air temperature and radiation). The mean lake evaporation since the late 1990s is greater than previous periods; thus, this change in evaporation has suppressed the recent expansion of Nam Co.

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“…With respect to CRU, similar bias distributions are observed, but numerical values are generally about 1°C higher. The cold bias on the Tibetan plateau (with its very complex terrain and high altitude) is partially inherited from the driving data ERA‐Interim which, although providing a realistic representation of the topographic effects and consistent with the topography of the plateau, show a cold bias (0.6°C) compared to observed temperatures at 13 radiosonde stations [ Zou et al, ]. Moreover, cold bias at high altitude is a typical model deficiency of COSMO‐CLM and is due to underestimation of the model orography, and might also be due to the insufficient ability of the model to reproduce the temperature inversions recorded in winter [ Du et al, ].…”

Section: Validation Of Cosmo‐clm Over 1980–2011mentioning

confidence: 99%

Regional climate modeling over China with COSMO‐CLM: Performance assessment and climate projections

et al. 2014

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This study presents the results of high-resolution (0.125°) climate simulations over a Chinese area performed with an optimized configuration of the regional climate model COSMO-CLM, driven by ERA-Interim Reanalysis over the period 1979-2011 and by the output of the global model CMCC-CM (resolution 0.75°) over the period 1979-2100. The main aim of this work was to analyze the capabilities of COSMO-CLM to describe the climate of China in the recent past; validation revealed a good improvement in reproducing the precipitation and a reasonable improvement in 2 m temperature representation compared to results reported elsewhere. Climate projections, under the new IPCC RCP4.5 and RCP8.5 emission scenarios, show a significant warming expected in China over the 21st century, while precipitation changes are expected only on a regional scale: increases in precipitation are projected for both scenarios in the northern part of the domain, while the southern area will be affected by a reduction in winter.

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Validation and application of reanalysis temperature data over the Tibetan Plateau

Cited by 30 publications

References 25 publications

Anthropogenic aerosol effects on East Asian winter monsoon: The role of black carbon‐induced Tibetan Plateau warming

Anthropogenic aerosol effects on East Asian winter monsoon: The role of black carbon‐induced Tibetan Plateau warming

Quantifying evaporation and its decadal change for Lake Nam Co, central Tibetan Plateau

Regional climate modeling over China with COSMO‐CLM: Performance assessment and climate projections

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