Vegetation Mediated Mercury Flux and Atmospheric Mercury in the Alpine Permafrost Region of the Central Tibetan Plateau

2020 ◽  
Vol 54 (10) ◽  
pp. 6043-6052
Author(s):  
Shiwei Sun ◽  
Ming Ma ◽  
Xiaobo He ◽  
Daniel Obrist ◽  
Qianggong Zhang ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Atmospheric Mercury ◽  
Permafrost Region ◽  
Central Tibetan Plateau ◽  
Mercury Flux

scholarly journals Facilitation stabilizes moisture-controlled alpine juniper shrublines in the central Tibetan Plateau

2015 ◽  
Vol 132 ◽  
pp. 20-30 ◽  
Author(s):  
Yafeng Wang ◽  
Eryuan Liang ◽  
Aaron M. Ellison ◽  
Xiaoming Lu ◽  
J. Julio Camarero
Keyword(s):  
Tibetan Plateau ◽  
Central Tibetan Plateau

Soil infiltration processes of different underlying surfaces in the permafrost region on the Tibetan Plateau

2018 ◽  
Vol 63 (11) ◽  
pp. 1733-1744 ◽  
Author(s):  
Guo-jie Hu ◽  
Li-ming Tian ◽  
Lin Zhao ◽  
Xiao-dong Wu ◽  
Ren Li ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Permafrost Region ◽  
The Tibetan Plateau ◽  
Soil Infiltration ◽  
Infiltration Processes

scholarly journals Luminescence dating of lacustrine sediments from CUOE Lake on the central Tibetan Plateau

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Yandong Hou ◽  
Hao Long ◽  
Lei Gao ◽  
Ji Shen
Keyword(s):  
Tibetan Plateau ◽  
Lacustrine Sediments ◽  
Water Reservoir ◽  
Hard Water ◽  
Luminescence Dating ◽  
Coarse Grained ◽  
The Tibetan Plateau ◽  
Sediment Layer ◽  
Central Tibetan Plateau ◽  
Dating Method

AbstractLuminescence dating technology has been used for chronological constraints on lacustrine sediments due to the ubiquitous materials (e.g., quartz and feldspar) as dosimeters, and a relatively long dating range, compared with the commonly used radiocarbon dating method. However, quartz dating on the Tibetan Plateau may suffer from dim and unstable luminescence signals. In the current study, we investigate a lake-related outcrop from the shore of Cuoe Lake on the central Tibetan Plateau. Both coarse-grained quartz and K-feldspar fractions were extracted, and OSL and post-IR IRSL signals were measured from these fractions, respectively. Combining the stratigraphy analysis and dating results, this study shows that: (1) quartz appears to be unsuitable for dating because of very dim natural signals and even anomalous fading (average g-value: 4.30 ± 2.51 %/decade). The suitability of the applied pIRIR protocol measured at 150°C (pIRIR150) for K-feldspar samples was confirmed by a set of luminescence tests; (2) compared with the luminescence-based chronology, the 14C age of shells from the same sediment layer yielded older age by ~7 ka, which is likely attributed to hard water reservoir effect in Cuoe Lake; (3) the lake level reached its peak and maintained high-stand during the early Holocene (~9.4–7.1 ka). This study highlights the applicability of K-feldspar luminescence dating when the counterpart quartz OSL is insensitive and encounters anomalous fading.

scholarly journals Possible Misidentification of Rain Type by TRMM PR over Tibetan Plateau

2007 ◽  
Vol 46 (5) ◽  
pp. 667-672 ◽  
Author(s):  
Yunfei Fu ◽  
Guosheng Liu
Keyword(s):  
Tibetan Plateau ◽  
Common Knowledge ◽  
Tropical Rainfall Measuring Mission ◽  
Stratiform Rain ◽  
Freezing Level ◽  
Central Tibetan Plateau ◽  
Standard Product ◽  
Trmm Pr ◽  
Trmm Precipitation ◽  
Rain Events

Abstract Rain-type statistics derived from Tropical Rainfall Measuring Mission (TRMM) precipitation radar (PR) standard product show that some 70% of raining pixels in the central Tibetan Plateau summer are stratiform—a clear contradiction to the common knowledge that rain events during summer in this region are mostly convective, as a result of the strong atmospheric convective instability resulting from surface heating. In examining the vertical distribution of the stratiform rain-rate profiles, it is suspected that the TRMM PR algorithm misidentifies weak convective rain events as stratiform rain events. The possible cause for this misidentification is believed to be that the freezing level is close to the surface over the plateau, so that the ground echo may be mistakenly identified as the melting level in the PR rain classification algorithm.

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