Interdecadal variations in the early (May–June) summer monsoon rainfall over South China (SCMR) are found to be related ENSO (El Niño/Southern Oscillation) and PDO (Pacific Decadal Oscillation). An interdecadal variation SCMR can identified, with more dry (wet) years during periods of high (low) index. Such also association PDO. When phase, i.e. phase/El Niño events, or low phase/La Niña tends below above normal respectively often. But when out‐of‐phase, has no wet preference. relationships...

Abstract In this study, we investigate the different impacts of El Niño and Modoki on China rainfall in their decaying phases. During spring, year events, there are positive anomalies south Yangtze River, whereas no obvious signals found same season for Modoki. subsequent summer season, wet signal River associated with continues, while suppressed now appears northern Yangtze–Huaihe region. contrast, is above normal region from Huaihe to Yellow below southern during events. The distinct...

Abstract In January 2008, central and southern China experienced persistent low temperatures, freezing rain, snow. The large-scale conditions associated with the occurrence development of these snowstorms are examined in order to identify key synoptic controls leading this event. Three main factors identified: 1) blocking high over Siberia, which remained quasi-stationary around 65°E for 3 weeks, led advection dry cold Siberian air down China; 2) a strong southwesterly flow western Pacific...

Abstract This study attempts to assess the possible linkage between Ural–Siberian blocking and East Asian winter monsoon (EAWM). During boreal winter, dominance of thermally enhances cold advection downstream. The frequent occurrence potentially promotes a EAWM vice versa. seasonal activity can be regarded as combined effect Arctic Oscillation (AO) El Niño–Southern (ENSO). Weakened (strengthened) meridional flow in positive (negative) phase AO is unfavorable (favorable) for formation highs....

Abstract East Asian floods and droughts in summer show a typical dipole pattern with north-south oscillation centered near 30°N, called the southern drought–northern flood (SDNF) pattern, which has caused significant economic losses casualties past three decades. However, effective explanations predictions are still challenging, making suitable disaster prevention more difficult. Here, we find that key predictor of this is Quasi-Biennial Oscillation (QBO, tropical winds above 10 km). The QBO...

In July to August 2022, Pakistan suffered historic flooding while record-breaking heatwaves swept southern China, causing severe socioeconomic impacts. Similar extreme events have frequently coincided between two regions during the past 44 years, but underlying mechanisms remain unclear. Using observations and a suite of model experiments, here, we show that upper-tropospheric divergent wind induced by convective heating over excites barotropic anomalous anticyclone eastern which further...

Abstract This paper investigates the relationship between onset date of South China Sea summer monsoon (SCSSM) and El Niño/Southern Oscillation (ENSO). The (MOD) is defined on basis switch 850‐hPa zonal winds over (SCS) from easterly to westerly for two consecutive pentads. ENSO signal represented by ocean heat content (OHC), which proportional depth 20 °C isotherm. It found that, in years associated with a warm (cold) event or year after, tends have late (an early) intensity SCSSM also be...

Abstract Interannual variations of the East Asian trough (EAT) axis at 500 hPa are studied with European Centre for Medium-Range Weather Forecasts 40-yr reanalysis data. The associated circulation pattern and pathway winter monsoon (EAWM) EAT tilt specially investigated a index, which is closely related to midlatitude baroclinic process mainly represents intensity eddy-driven jet over Asia–North Pacific sector. When smaller than normal, EAWM prefers take southern less cold air moves central...

Abstract This study investigates the intraseasonal variability of tropical cyclones (TCs) by systematically examining two major components oscillation (ISO), 30–60-day Madden–Julian (MJO) and 10–20-day quasi-biweekly (QBWO). Results suggest that these ISO modes exhibit different origins, spatial scales, propagation characteristics, which result in distinctive TC modulation western North Pacific Ocean (WNP). The northeastward-propagating MJO predominantly controls basinwide frequency....

From the point of better biocompatibility and sustainability, biobased shape memory polymers (SMPs) are highly desired. We used 1,3-propanediol, sebacic acid, itaconic which have been industrially produced via fermentation or extraction with large quantities as main raw materials for synthesis poly(propylene sebacate). Diethylene glycol was to tailor flexibility polyester. The resulted polyesters were found be promising SMPs excellent recovery fixity (near 100% independent thermomechanical...

Abstract By exploring the spatiotemporal features of Indian Ocean Dipole (IOD) both on sea surface and in subsurface ocean, present article reveals that dipole mode, with larger amplitude than one, is likely to prolong signal for a long time. Using wind geopotential height data from NCEP/NCAR, this further investigates IOD impacts Asian summer monsoon activities following year. A normal (late) South China Sea onset associated previous positive (negative) IOD. In after an year, tends induce...

Abstract Blocking variability over the Ural Mountain region in boreal winter and its relationship with East Asian climate is investigated. The shift around mid 1970s has been shown to exert a significant influence on blocking pattern. In contrast years before 1976/1977, signal after 1976/1977 found propagate less into stratosphere more eastward troposphere Asia, which therefore exerts climate. This enhanced blocking–East amplifies impact of Asia and, background decreasing blocking,...

Abstract This study investigates how tropical cyclone (TC) tracks and landfalls are modulated by the two major components of intraseasonal oscillation (ISO), 30–60-day Madden–Julian (MJO) 10–20-day quasi-biweekly (QBWO). In convective phases MJO (phases 7 + 8 1 2), western North Pacific Ocean (WNP) is mainly clustered with westward- northwestward-moving TCs. The strong easterlies (southeasterlies) in southern flank subtropical high lead to an increase TC activity Philippines Vietnam (China...

Abstract This study examines the interannual variability of three groups tropical cyclones (TCs)—super typhoons (STYs), (TYs), and storms depressions (TSTDs)—and their relationship with El Niño–Southern Oscillation (ENSO). Both wavelet analysis correlation studies upper-ocean heat content reveal significant differences for types TCs. In particular, an increase (decrease) in frequency STYs is usually associated mature phase Niño (La Niña) events, while converse true TSTDs. contrast, TYs...

This study investigates changes in the destructiveness of landfalling tropical cyclones (TCs) over China during 1975–2014. Using four different TC datasets, it is found that TCs making landfall east (TC EC ) have tended to be more destructive recent decades, with a significant increase power dissipation index (PDI) after landfall. Both time series analysis and diagnostic reveal such an PDI associated concomitant enhancement frequency as well intensity China. In contrast, south SC are less...

Abstract The complex interaction between the Indian Ocean dipole (IOD) and El Niño–Southern Oscillation (ENSO) is further investigated in this study, with a focus on impacts of IOD ENSO subsequent year [ENSO(+1)]. concurrent [ENSO(0)] can be summarized as follows: ENSO(0) trigger enhance IOD, while accelerate its demise. Regarding IOD(0) ENSO(+1), it revealed that lead to anomalous SST cooling patterns over equatorial Pacific after winter following indicating formation La Niña–like pattern...

Abstract Understanding how droughts are characterized, propagated, and projected, particularly multivariate droughts, is necessary to explain the variability changes in drought characteristics. This study aims understand multimodel global monitoring, propagation, projection by utilizing a standardized index (MSDI) during historical (1959–2014) future (2045–2100) periods under two socioeconomic pathways SSPs (370 585), derived from bias‐corrected Coupled Model Intercomparison Project Phase 6...