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Sökning: WFRF:(Zhao Fang) > (2020-2022) > (2022) > Chen Deliang 1961

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1.
  • Fang, K., et al. (författare)
  • Wind speed reconstruction from a tree-ring difference index in northeastern Inner Mongolia
  • 2022
  • Ingår i: Dendrochronologia. - : Elsevier BV. - 1125-7865. ; 72
  • Tidskriftsartikel (refereegranskat)abstract
    • The lack of instrumental wind speed data beyond the industrial era limits our ability to evaluate the contributions of natural versus anthropogenic processes on long-term changes in wind speed. It is thus desirable to find proxies for historical changes in wind speed. Persistent and strong winds can cause compression wood composed of wider and denser rings in conifer trees at leeward sides. This work hypothesizes that the asymmetric wind impact on tree radial growth provides information about wind speed changes. To test the hypothesis, we developed a Tree-Ring Difference Index (TRDI) representing the differences between tree ring widths at the windward and leeward sides. Thirty-four trees subjected to strong and persistent winds in a Picea mongolica forest in northeastern Inner Mongolia were analyzed. The TRDI based on 124 cores correlates significantly with the maximum wind speeds recorded from May to August, indicating that this proxy can be used for wind speed reconstruction. Our reconstruction reveals long-term changes in wind speed including an upward trend from 1940 to 1954, followed by continually decreasing wind speeds from 1955 to 1990 and increasing values from 1991 to 2010. The reconstructed wind speeds include strong multi-decadal variability and significant correlations with the Pacific Decadal Oscillation (PDO). © 2022 Elsevier GmbH
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2.
  • Zhou, F. F., et al. (författare)
  • Teleconnections between large-scale oceanic-atmospheric patterns an interannual surface wind speed variability across China: Regional and seasonal patterns
  • 2022
  • Ingår i: Science of the Total Environment. - : Elsevier BV. - 0048-9697. ; 838
  • Tidskriftsartikel (refereegranskat)abstract
    • Great attention has been paid to the long-term decline in terrestrial near-surface wind speed (SWS) in China. However, how the SWS varies with regions and seasons and what modulates these changes remain unclear. Based on quality-controlled and homogenized terrestrial SWS data from 596 stations, the covarying SWS patterns during the Asian Summer Monsoon (ASM) and the Asian Winter Monsoon (AWM) seasons are defined for China using empirical orthogonal function (EOF) analysis for 1961-2016. The dominant SWS features represented by EOF1 patterns in both seasons show a clear decline over most regions of China. The interannual variability of the EOF1 patterns is closely related to the Northeast Asia Low Pressure (NFAIP) and the Arctic Oscillation (AO), respectively. The EOF2 and EOF3 patterns during ASM (AWM) season describe a dipole mode of SWS between Fast Tibetan Plateau and Fast China Plain (between Fast Tibetan Plateau and Northeast China), and between Southeast and Northeast China (between Northeast China and the coastal areas of Southeast China), respectively. These dipole structures of SWS changes arc closely linked with the oceanic-atmospheric oscillations on interannual scale.
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  • Resultat 1-2 av 2
Typ av publikation
tidskriftsartikel (2)
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refereegranskat (2)
Författare/redaktör
Zhao, Z. (2)
Zhang, F. (1)
Liu, J. (1)
Azorin-Molina, César (1)
Fang, K. (1)
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Zhang, Peng (1)
Zheng, Z (1)
Bai, M (1)
Azorin-Molina, C. (1)
Jia, X. (1)
Guijarro, J. A. (1)
Zhou, F. F. (1)
Fang, Keyan (1)
Zhang, Gangfeng (1)
Dong, Z. (1)
Camarero, J. J. (1)
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Göteborgs universitet (2)
Språk
Engelska (2)
Forskningsämne (UKÄ/SCB)
Naturvetenskap (2)
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