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Foreword to the special issue: decadal scale drought in arid regions

Zhuguo Ma - historical and future drought changes (Zhao and Dai 2017) . These results provide a solid background for assessing the vulnerability of and risk to water resources over arid and semi-arid

Characteristics of consecutive dry days variations in China

Consecutive dry days (CDDs) can serve as an effective measure of extreme precipitation and seasonal droughts. Using daily rain gauge data from 718 stations in China for the years 1961–2012, this paper documents the spatial and temporal characteristics of CDDs in the cold season (November to March) and the warm season (April to October). The results show that the long-term linear...

Regional water budgets and hydroclimatic trend variations in Xinjiang from 1951 to 2000

Xinjiang is located in arid northwestern China where water cycle has accelerated due to increased precipitation and temperature. However, the regional water budget characteristics vary due to the complex topography and spatial heterogeneities of hydroclimatology. This study uses atmospheric forcing constrained by observation from 90 meteorological stations in Xinjiang as input...

Modulation of monthly precipitation patterns over East China by the Pacific Decadal Oscillation

Previous studies suggest that the Pacific Decadal Oscillation (PDO) modulates annual and summer precipitation patterns over East China. In this study, the effect of the PDO on monthly precipitation anomalies over this region is investigated. The new results show that the effect is month-dependent. The well-known North–South dipole patterns of annual precipitation are dominated by...

Variability of modeled runoff over China and its links to climate change

Runoff is a key component of the water cycle over land, with direct impact on regional ecosystems and water resources. This study investigates historical runoff variability and change over China in 1951–2008 using the Community Land Model and in situ observations of atmospheric forcing fields. Model simulations are first evaluated against in situ observations of streamflow for...

Soil moisture-based study of the variability of dry-wet climate and climate zones in China

An ensemble soil moisture dataset was produced from 11 of 25 global climate model (GCM) simulations for two climate scenarios spanning 1900 to 2099; this dataset was based on an evaluation of the spatial correlation of means and trends in reference to soil moisture simulations conducted using the community land model driven by observed atmospheric forcing. Using the ensemble soil...

Land use/land cover changes and regional climate over the Loess Plateau during 2001–2009. Part II: interrelationship from observations

Afforestation efforts in China resulted in significant changes in vegetation coverage over the Loess Plateau during 2001–2009. While regional climate conditions dominate the distribution of major vegetation types, human activities, primarily afforestation/reforestation and the resultant land use/land cover (LULC) changes (LULCC) and their impacts, are the focus of this study. A...

Land use/land cover changes and regional climate over the Loess Plateau during 2001–2009. Part I: observational evidence

Adverse environmental impacts from deforestation are a growing area of concern in climate change discussions. The Chinese government has implemented a series of policies, such as the Grain for Green Project, in an attempt to mitigate the impacts. This study takes a regional perspective to report land use/land cover changes over the Loess Plateau region from 2001 to 2009. MODIS...

Modeling spatial and temporal variations in soil moisture in China

On the basis of station observations, an atmospheric field (ObsFC) was constructed for the Community Land Model version 3.5 (CLM3.5). The model (CLM3.5 driven with ObsFC, hereafter referred as to CLM3.5/ObsFC) was used to simulate soil moisture (SM) from 1951 to 2008 in China. The resulting SM was compared with in situ observations, remote-sensing data and estimations made by...

Satellite-Based Analysis of Evapotranspiration and Water Balance in the Grassland Ecosystems of Dryland East Asia

Yang Fu Tianbao Zhao Jinming Feng Zhuguo Ma Mingguo Ma Shaomin Liu Guangsheng Zhou Jun Asanuma Shiping Chen Mingyuan Du Gombo Davaa Tomomichi Kato Qiang Liu Suhong Liu Shenggong Li Changliang Shao