Decadal variability of precipitation in china
To better detect the decadal variation of summer precipitation over china after the late 1990s, several subregions over china were selected based on the rotated empirical orthogonal function (reof) analysis of the standardized summer precipitation over china during 1961–2012. Decadal variability of the summer precipitation in china is the near-80-yr oscillation other modes of 12-yr and 30–40-yr oscillations also play an important role in affecting regional inter-decadal variability. The bay of bengal, the south china sea, and the indian ocean are dominant moisture source areas affecting the decadal‐scale variation of precipitation in north china 1 introduction climate in north china manifests a strong monsoonal characteristic, with a significant portion of annual total rainfall in summer. The purpose of the present study is to document the variability of china precipitation in boreal spring and summer, and its links to the variations of global ssts at different oceanic regions and at different time section 5 investigates the trends and decadal variability of the observed precipitation, and their possible links to the decadal.
The decadal climate shift of the summer precipitation in south china was accompanied with decadal changes of the eurasian snow cover in boreal spring and sea surface temperature (sst) in western north paci c in boreal summer in the late 1980s. Based on observed data and data simulated by climate models, temporal variation and spatial distribution of precipitation in china from 1961 to 2050 were investigated the slope of annual precipitation and mann-kendall statistical test were applied to quantify the trend magnitude and detect the significant trend, respectively besides, decadal and interannual variations of different rain belts. (2) in recent 54 years, the spatial pattern of the inter-decadal variability of summer precipitation in china is mainly structured with two meridional modes: the dipole pattern and the positive-negative-positive (“+ − + ” pattern. Several decades that take into account both forced climate change and natural decadal-scale climate variability are in their infancy  many formidable challenges exist.
The pacific decadal oscillation (pdo) is a robust, recurring pattern of ocean-atmosphere climate variability centered over the mid-latitude pacific basin the pdo is detected as warm or cool surface waters in the pacific ocean , north of 20°n. Advances in atmospheric sciences, vol 33, june 2016, 706–714 inﬂuence of internal decadal variability on the summer rainfall in eastern china as simulated by ccsm4. Special issue decadal variability and predictability of climate print special issue flyer this study estimates the effects of the ocean-related decadal climate variability (dcv) on growing degree day, precipitation, and drought in the crop-growing seasons of major crops in the united states the empirical results illustrate that dcv. An in-depth analysis of decadal variability of hd over eastern china and related meteorological factors are crucial to reveal the physical mechanisms between hd and the pdo and would have benefits for the hd prediction a review of decadal/interdecadal climate variation studies in china adv atmos sci 21, 425–436 (2004. Decadal variations in summer drought events during 1956–2005 are examined over eastern china to identify their leading variability modes and their linkages to the pacific decadal oscillation (pdo), atlantic multi-decadal oscillation (amo), and global warming.
The average potential decadal predictabilities (ratio of slow-to-total decadal variance) are 062 and 037 for the temperature and rainfall over china, respectively, indicating that the (multi-)decadal variations of temperature are dominated by slow-decadal variability, while precipitation is dominated by unpredictable decadal noise. Read inter‐decadal variability of tibetan spring vegetation and its associations with eastern china spring rainfall, international journal of climatology on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. The effects of anthropogenic sources and precipitation on the decadal variation in n dep the changes in n fertiliser use, energy consumption, precipitation, and n dep from the 1990s to the 2000s in china were quite different ( fig 5 . Nanjing university, nanjing 210093, china decadal change in east asian monsoon climate system: natural variability versus anthropogenic forcing international workshop on interdecadal variability of the global monsoons 10-12 september, 2012, nanjing, china. Abstract the combined impact of the pacific decadal oscillation (pdo) and atlantic multidecadal oscillation (amo) on the summer rainfall in eastern china was investigated using ccsm4.
Nanjing university, nanjing 210093, china decadal change in east asian monsoon climate system: natural variability vs anthropogenic forcing international conference on science and technology for sustainability 2011 building from regional to global sustainability -visions from asia. Observed, reconstructed, and simulated decadal variability of summer precipitation over eastern china: jingyun zheng 1, maowei wu 1,2, quansheng ge 1, zhixin hao 1, and xuezhen zhang 1: 1 key laboratory of land surface pattern and simulation, institute of geographic sciences and natural resources research, chinese academy of sciences, beijing 100101. Decadal variability in land- and sea-surface temperatures (ssts), and rainfall on land radiative forcing associated with the 11- and 22-year sunspot cycles and lunar tidal forcing at the 186-year period have been cited to explain some of these patterns, and. Decadal variability of summer rainfall over mainland china: observation vs a 1000-year simulation of hadcm3 yonghui lei1,2, brian hoskins 2,3 and julia slingo2,4 1state key laboratory of remote sensing science, institute of remote sensing.
Decadal variability of precipitation in china
Relationships between pacific decadal oscillation (pdo) and atmospheric circulation in east asia and climate variabilities in china are investigated by using statistical method the regression coefficients upon the pdo index time series during period 1951～1998 are computed for a number of related oceanic and atmospheric variables and the observed surface air temperature and precipitation at. Published: tue, 21 nov 2017 introduction china is located in the east asian monsoon region, the variations of the amount and distribution of precipitation over china are strongly modulated by the east asian monsoon. Researchers revealed an inter-decadal change of the leading mode of summer rainfall in east china the inter-annual variability of summer precipitation in east asia is dominated by the east asian summer monsoon, which is closely associated with the western pacific subtropical high.
Within each year, most of the precipitation is delivered in summer, and there are also significant inter-annual and inter-decadal variability in the precipitation the limited precipitation is extremely critical to the irrigated agriculture and oasis eco-environment in gansu. Abstract daily precipitation data from 153 meteorological stations over northwest china during summer from 1963 to 2012 were selected to analyze the spatiotemporal distribution of extreme summer precipitation frequency. Cerning the decadal variability of rainfall over china in the 2000s, primarily due to the limited observations during this relatively short period in the twenty-first century however, recent studies have still provided evidences for changes in the rainfall in the 2000s for instance, zhu et al (2011. Influence of internal decadal variability on the summer rainfall in eastern china as simulated by ccsm4 yali zhu 1, 2 ( ),tao wang 1, 2 ,jiehua ma 2 1 nansen-zhu international research centre, chinese academy of sciences, beijing 100029 2 climate change research centre, chinese academy of sciences, beijing 100029.
The present article is the second part of a study on the inter-decadal variability of the summer precipitation in east china, which mainly addresses the possible cause of this change.