Recent Trends of Summer Convective and Stratiform Precipitation in Mid-Eastern China

Fu, Yunfei; Chen, Fengjiao; Liu, Guosheng; Yang, Yuanjian; Yuan, Renmin; Li, Rui; Liu, Qi; Wang, Yu; Zhong, Lei; Sun, Liguang

doi:10.1038/srep33044

Cited by 20 publications

(17 citation statements)

References 44 publications

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“…Our experimental rain addition simulates larger but less frequent rain events rather than a regular, small increase in rainfall. While this matches the local inhabitants’ perceptions of climate change (Singh et al., 2015; informal accounts of residents of Kibber, Spiti) and observed trends of increasing frequency and magnitude of large storm events (Fu et al., 2016; Goulden et al., 2016), it leaves room to explore how other modes of precipitation increase may impact vegetation. One shortcoming of our study is a lack of soil moisture data; linking changes in soil moisture to changes in vegetation would provide a clearer understanding of mechanisms underlying vegetation responses to climate and grazing.…”

Section: Discussionsupporting

confidence: 73%

Grazing and climate change have site‐dependent interactive effects on vegetation in Asian montane rangelands

Kohli

Mijiddorj

Suryawanshi

et al. 2020

Journal of Applied Ecology

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Climate over Asian montane rangelands is changing faster than the global average, posing serious threats to the future of the region's livestock‐based economies and cultures. Effects of climate change on rangeland vegetation likely depend on grazing by herbivores but the potential responses of vegetation to such changes in climate and grazing regimes remain unclear. We examined vegetation responses to experimentally simulated climate change (warming, drought and increased rainfall) and grazing (clipping vegetation) between 2015 and 2018 at two mountain rangeland sites: Spiti valley, in the Indian Trans‐Himalaya and Tost, in the Gobi‐Altai Mountains in Mongolia. Clipping and climate change manipulations interactively reduced vegetation cover and biomass but did not affect species richness. Treatment effects and their interactions varied between sites. In ungrazed plots, vegetation cover and biomass declined sharply in response to warming (18%–35%) and drought (20%–50%) at the two sites, and, surprisingly also declined slightly in response to increased rainfall (20%) at Tost. While the effects of climate treatments were largely similar in the grazed and ungrazed plots in Tost, they were larger in the ungrazed plots in Spiti. The decline in vegetation cover was driven by a decline in the cover of both forbs and grasses. In combination, grazing and warming (Tost) or drought (Spiti) had sub‐additive effects, that is, the decrease in vegetation cover in response to grazing and warming/drought was less than the sum of their independent effects but greater than the effect of either manipulation alone. Of the two, warming had a greater effect than drought at the more arid site (Tost), whereas drought had a larger effect at the more mesic site (Spiti). Synthesis and applications. Our findings show that future changes in climate, including just over 1°C of warming, could undermine the sustainability of pastoral economies and the persistence of wildlife across Asian montane rangelands. Furthermore, grazing by herbivores will play an important role in mediating rangeland responses to climate change; thus, pasture management in concert with local pastoralists will be crucial in mitigating the adverse effects of climate change on rangelands, pastoral livelihoods and wildlife populations.

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Section: Discussionsupporting

confidence: 73%

Grazing and climate change have site‐dependent interactive effects on vegetation in Asian montane rangelands

Kohli

Mijiddorj

Suryawanshi

et al. 2020

Journal of Applied Ecology

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“…Beyond the summer seasonal mean (until 30 °C), hourly precipitation extremes continue to intensify at a sub-C-C rate while daily precipitation extremes decrease rapidly with rising temperatures. We have inferred that it is probably the extreme convective summer rainfall continues to intensify, but further investigation such as refs 19,20,34 are urgently needed to confirm that.…”

Section: Discussionmentioning

confidence: 88%

“…A survey by the residential development department in China has found that 62% of cities were flooded at least once between 2008 and 2010, based on a sample of 351 Chinese cities (http://news.ifeng.com/shendu/nfzm/detail_2013_07/18/27643337_0.shtml). During the period 1971–2013, the regional average summer mean temperature across a large part of China has increased by ~0.95 °C, smaller than the annual mean rise of 1.44 °C34, but the regionally averaged maximum summer hourly precipitation has increased by 11.2%. Using various different measures, we have shown that hourly and daily summer precipitation extremes in China increase robustly at super-C-C scalings with rising temperatures.…”

Section: Discussionmentioning

confidence: 94%

Robust increase in extreme summer rainfall intensity during the past four decades observed in China

Xiao

Zhang

et al. 2016

Sci Rep

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Global warming increases the moisture holding capacity of the atmosphere and consequently the potential risks of extreme rainfall. Here we show that maximum hourly summer rainfall intensity has increased by about 11.2% on average, using continuous hourly gauge records for 1971–2013 from 721 weather stations in China. The corresponding event accumulated precipitation has on average increased by more than 10% aided by a small positive trend in events duration. Linear regression of the 95th percentile daily precipitation intensity with daily mean surface air temperature shows a negative scaling of −9.6%/K, in contrast to a positive scaling of 10.6%/K for hourly data. This is made up of a positive scaling below the summer mean temperature and a negative scaling above. Using seasonal means instead of daily means, we find a consistent scaling rate for the region of 6.7–7%/K for both daily and hourly precipitation extremes, about 10% higher than the regional Clausius-Clapeyron scaling of 6.1%/K based on a mean temperature of 24.6 °C. With up to 18% further increase in extreme precipitation under continuing global warming towards the IPCC’s 1.5 °C target, risks of flash floods will exacerbate on top of the current incapability of urban drainage systems in a rapidly urbanizing China.

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“…2f). The trends of the different types of precipitation are caused by changes in their frequency and intensity throughout China, but their changes are not completely consistent in space and time (Fu et al 2016;Han et al 2016). The 9-year moving averages of the different precipitation anomalies show interdecadal characteristics.…”

Section: Spatial and Temporal Characteristics Of Annual Precipitationmentioning

confidence: 99%

The Variabilities of Convective Precipitation and Large-scale Precipitation in Southern China under Global Warming

zhang

Zhao²,

Huang

et al. 2021

Preprint

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In this paper, the spatial and temporal characteristics of convective precipitation (CP) and large-scale precipitation (LSP) in southern China during 1980-2020 are analyzed using monthly mean precipitation data from MERRA-2. In addition, the possible effects of relative humidity on CP and LSP are explored. The results indicate the following. (1) The LSP dominates the proportion of total precipitation (TP). Both LSP and CP are more prevalent in the south and less prevalent in the north, but there is a difference in the regions of their maximum centers. (2) Significant interannual and seasonal variations are observed in precipitation. TP and LSP tended to be higher than average after the 1990s, while for the CP, a negative trend has dominated the past years with considerable fluctuation. There are obvious increasing trends for TP and LSP, with area-averaged linear trends of 7.0 mm/year and 8.9 mm/year, respectively, while that of CP is -1.9 mm/year. The increasing trends of LSP are mainly contributed by the precipitation of summer and autumn. (3) The variations of LSP are affected by relative humidity in the troposphere, while CP is only influenced by the changes in relative humidity due to air temperature or specific humidity. The trend of relative humidity is -0.32%/decade, mainly due to rising temperature in the troposphere. (4) Changes in specific humidity caused by temperature or specific humidity alone act on large-scale precipitation through both interannual and interdecadal processes, causing large-scale precipitation to increase. And the convective precipitation is mainly affected by the interdecadal processes.

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Recent Trends of Summer Convective and Stratiform Precipitation in Mid-Eastern China

Cited by 20 publications

References 44 publications

Grazing and climate change have site‐dependent interactive effects on vegetation in Asian montane rangelands

Grazing and climate change have site‐dependent interactive effects on vegetation in Asian montane rangelands

Robust increase in extreme summer rainfall intensity during the past four decades observed in China

The Variabilities of Convective Precipitation and Large-scale Precipitation in Southern China under Global Warming

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