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Sökning: WFRF:(Vaganov E)

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1.
  • Juday, G.P, et al. (författare)
  • Chapter 14: Forests, Land Management and Agriculture
  • 2005
  • Ingår i: The Arctic Climate Impact Assessment - The Scientific Report. - Cambridge : Cambridge University Press. - 0521865093 ; , s. 781-862
  • Bokkapitel (övrigt vetenskapligt/konstnärligt)
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3.
  • Tchebakova, N. M., et al. (författare)
  • Energy and Mass Exchange and the Productivity of Main Siberian Ecosystems (from Eddy Covariance Measurements). 2. Carbon Exchange and Productivity
  • 2015
  • Ingår i: Biology Bulletin of the Russian Academy of Science. - 1062-3590. ; 42:6, s. 579-588
  • Tidskriftsartikel (refereegranskat)abstract
    • Direct measurements of CO2 fluxes by the eddy covariance method have demonstrated that the examined middle-taiga pine forest, raised bog, true steppe, and southern tundra along the Yenisei meridian (similar to 90 degrees E) are carbon sinks of different capacities according to annual output. The tundra acts as a carbon sink starting from June; forest and bog, from May; and steppe, from the end of April. In transitional seasons and winter, the ecosystems are a weak source of carbon; this commences from September in the tundra, from October in the forest and bog, and from November in the steppe. The photosynthetic productivity of forest and steppe ecosystems, amounting to 480-530 g C/(m(2) year), exceeds by 2-2.5 times that of bogs and tundras, 200-220 g C/(m(2) year). The relationships between the heat balance structure and CO2 exchange are shown. Possible feedback of carbon exchange between the ecosystems and atmosphere as a result of climate warming in the region are assessed.
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4.
  • Buntgen, U., et al. (författare)
  • Recognising bias in Common Era temperature reconstructions
  • 2022
  • Ingår i: Dendrochronologia. - : Elsevier BV. - 1125-7865 .- 1612-0051. ; 74
  • Tidskriftsartikel (refereegranskat)abstract
    • A steep decline in the quality and quantity of available climate proxy records before medieval times challenges any comparison of reconstructed temperature and hydroclimate trends and extremes between the first and second half of the Common Era. Understanding of the physical causes, ecological responses and societal consequences of past climatic changes, however, demands highly-resolved, spatially-explicit, seasonally-defined and absolutely-dated archives over the entire period in question. Continuous efforts to improve existing proxy records and reconstruction methods and to develop new ones, as well as clear communication of all uncertainties (within and beyond academia) must be central tasks for the paleoclimate community.
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