A dataset of lake-catchment characteristics for the Tibetan Plateau

Liu, Junzhi; Fang, Pengcheng; Que, Yefeng; Zhu, Liang‐Jun; Duan, Zheng; Tang, Guoan; Liu, Pengfei; Ji, Mukan; Liu, Yongqin

doi:10.5194/essd-14-3791-2022

Cited by 20 publications

(18 citation statements)

References 43 publications

(49 reference statements)

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“…To count the lake area greater than 3 km 2 , we used a dataset of lake‐catchment characteristics for the QTP (Liu, 2022). From this dataset, we identified 682 lakes larger than 3 km 2 situated at altitudes exceeding 3,000 m and with permafrost distribution in their catchments (Liu et al., 2022; Zou et al., 2017). The total area of these larger lakes amounts to 47,667 km 2 , and then we ranked them based on an alpine vegetation distribution map (Wang et al., 2016).…”

Section: Methodsmentioning

confidence: 99%

Methane Emissions From the Qinghai‐Tibet Plateau Ponds and Lakes: Roles of Ice Thaw and Vegetation Zone

Li,

Wang,

Sun

et al. 2024

Global Biogeochemical Cycles

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Comprehensive seasonal observation is essential for accurately quantifying methane (CH4) emissions from ponds and lakes in permafrost regions. Although CH4 emissions during ice thaw are important and highly variable in high‐latitude freshwater ponds and lakes (north of ∼50°N), their contribution is seldom included in estimates of aquatic‐atmospheric CH4 exchange across different alpine ecosystems. Here, we characterized annual CH4 emissions, including emissions during ice thaw, from ponds and lakes across four alpine vegetation zones in the Qinghai‐Tibet Plateau (QTP) permafrost region. We observed significant spatial variability in annual CH4 emission rates (8.44−421.05 mmol m−2 yr−1), CH4 emission rates during ice thaw (0.26−144.39 mmol m−2 yr−1), and the contribution of CH4 emissions during ice thaw to annual emissions (3−33%) across different vegetation zones. Dissolved oxygen concentration under ice, along with substrate availability and water salinity, played critical roles in influencing CH4 flux during ice thaw. We estimated annual CH4 emissions from ponds and lakes in the QTP permafrost region as 0.04 (0.03−0.05) Tg CH4 yr−1 (median (first quartile−third quartile)), with approximately 20% occurring during ice thaw. Notably, the average areal CH4 emission rate from ponds and lakes in the QTP permafrost region amounts to only 8% of that from high‐latitude waterbodies, primarily due to the dominance of large saline lakes with lower CH4 emission rates in the alpine permafrost region. Our findings emphasize the significance of incorporating comprehensive seasonal observation of CH4 emissions across different vegetation zones in better predicting CH4 emissions from alpine ponds and lakes.

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Section: Methodsmentioning

confidence: 99%

Methane Emissions From the Qinghai‐Tibet Plateau Ponds and Lakes: Roles of Ice Thaw and Vegetation Zone

Li,

Wang,

Sun

et al. 2024

Global Biogeochemical Cycles

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“…Since most lakes are located between 4,000 and 5,000 m above sea level, they are rarely affected by human activities. Therefore, they have been selected as typical examples in studies of global changes (Zhang et al., 2019; Y. Zhang et al., 2020; Liu et al., 2021; Liu et al., 2022).…”

Section: Methodsmentioning

confidence: 99%

“…Because of its high altitude and large area, the Qinghai‐Tibet Plateau (QTP), also known as the “Third Pole of the Earth” and the “Water Tower of Asia,” has a profound influence on regional and global climate patterns (Boos & Kuang, 2010; X. Li, Long, et al., 2022; Yang et al., 2017). Lakes are distributed widely on the QTP with a total area of over 5 × 10 4 km 2 , accounting for half of China's total lake area (Liu et al., 2022). These lakes are strong indicators of climate change, particularly those present on the QTP.…”

Section: Introductionmentioning

confidence: 99%

Lake Heatwaves and Cold‐Spells Across Qinghai‐Tibet Plateau Under Climate Change

Zhang,

Yao

2023

JGR Atmospheres

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Lake heatwaves (LHWs) and cold‐spells (LCSs), similar to marine heatwaves and cold‐spells, can have long‐term impacts on lake ecosystems and are vulnerable to climate change. Here we first comparatively assess LHW and LCS changes across the Qinghai‐Tibet Plateau (QTP) using satellite surface water temperature observations in 160 lakes over 1978–2017. Our findings reveal notable differences in the mean and trends of LHW and LCS metrics. Specifically, total days and frequency of LHW have been increasing at a rate of 8.82 ± 1.25 days per decade and 0.78 ± 0.10 counts per decade, respectively. Conversely, total days and frequency of LCS have decreased at –6.52 ± 1.46 days per decade and –0.51 ± 0.01 counts per decade, respectively. However, average duration and mean intensity show no significant difference. Additionally, the average duration of ice cover across the QTP has been decreasing (–2.60 ± 0.38 days per decade) due to the delayed freezing date (1.13 ± 0.18 days per decade) and earlier thawing date (–1.28 ± 0.27 days per decade) during 1978–2017. Furthermore, the annual mean lake surface water temperatures across the QTP exhibit a warming trend (0.00∼0.47 °C per decade) from 1978 to 2017, with faster warming occurring in winter (0.00∼0.98 °C per decade) compared to summer (–0.17∼0.47 °C per decade). Accelerated lake warming will increase the frequency and mean intensity of LHWs while decreasing the number of LCSs. These results help to understand how QTP lakes respond to extreme temperatures under climate change.

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“…The measurement data used are available at ZENODO (https://doi.org/10.5281/zenodo.7338912) (Liu, 2022).…”

Section: Conflict Of Interestmentioning

confidence: 99%

Relative Humidity Dependence of Growth Factor and Real Refractive Index for Sea Salt/Malonic Acid Internally Mixed Aerosols

et al. 2023

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Sea salt aerosols (SSAs) are one of the most abundant aerosol-type in the atmosphere and play an important role in climate change with the global direct radiative effect ranging from −0.31 to −1.1 W•m −2 (Ayash et al., 2008). Sea salts are commonly found to mix with complex organic components, including fatty acids, biogenic secondary organic aerosols, alkanes, and sugars, which come from continental or oceanic organic gaseous precursors and aerosols (

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A dataset of lake-catchment characteristics for the Tibetan Plateau

Cited by 20 publications

References 43 publications

Methane Emissions From the Qinghai‐Tibet Plateau Ponds and Lakes: Roles of Ice Thaw and Vegetation Zone

Methane Emissions From the Qinghai‐Tibet Plateau Ponds and Lakes: Roles of Ice Thaw and Vegetation Zone

Lake Heatwaves and Cold‐Spells Across Qinghai‐Tibet Plateau Under Climate Change

Relative Humidity Dependence of Growth Factor and Real Refractive Index for Sea Salt/Malonic Acid Internally Mixed Aerosols

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