M G Ogurtsov

Datos Biográficos

ID5602313
NOMBREM G Ogurtsov
NOMBRESM G
APELLIDOOgurtsov
FIRMAOGURTSOV M G
AFILIACIONESPhysico-Technical Institute
ORCID0000-0002-4517-9257
VERIFICADOSí
TOTAL DE OBRAS5
TOTAL DE CITAS6
TOTAL COMO AUTOR5
TOTAL COMO EDITOR0
PRIMER AÑO DE PUBLICACIÓN2001
AÑO MÁS RECIENTE DE PUBLICACIÓN2021
ÍNDICE H2

  • Solar-type periodicities in the climate variability of Northern Fennoscandia during the last three centuries

    Open AccessM G Ogurtsov, Samuli Helama et al.ARTICLEThe Holocene2021Referencias: 2

    Fifteen proxy records of summer temperature in Fennoscandia, Northern Europe and in Yamal and Taymir Peninsulas (Western Siberia) were analyzed for the AD 1700–2000 period. Century-long (70–100 year) and quasi bi-decadal periodicities were found from proxy records representing different parts of Fennoscandia. Decadal variation was revealed in a smaller number of records. Statistically significant correlations were revealed between the timescale-d…

  • The height-increment record of summer temperature extended over the last millennium in Fennoscandia

    Open AccessMarkus Lindholm, Risto Jalkanen et al.ARTICLEThe Holocene2010Citada por: 3Referencias: 1

    New data have allowed us to extend a previous height-increment chronology of Scots pine ( Pinus sylvestris L.) at the northern Fennoscandian timberline 817 years backwards in time, from 1561 to 745. Our final transfer model accounts for 31% of the dependent instrumental (mean June—August) temperature variance between 1908 and 2007. According to the 1263 yr long summer temperature proxy, the most severe summers were experienced in 1601, 1790 and 7…

  • A summer temperature proxy from height increment of Scots pine since 1561 at the northern timberline in Fennoscandia

    Open AccessMarkus Lindholm, M G Ogurtsov et al.ARTICLEThe Holocene2009Citada por: 2Referencias: 1

    Height increments of 60 Scots pine trees were used to reconstruct mean June—August temperature variability at interannual to decadal scales from 1561 to 2004. Three standardization methods (67%, 33% flexible splines, and a fixed 22 years spline) were compared in building chronologies in order to optimize the frequency response in relation to major climatic forcing factors. The height-growth chronology built using the 33% spline standardization pr…

  • Centennial-to-millennial fluctuations in July temperatures in North Finland as recorded by timberline tree rings of Scots pine

    Open AccessM G Ogurtsov, Maxim Ogurtsov et al.ARTICLEQuaternary Research2005

    A tree-ring proxy of summer temperature anomalies for northern Finland for the past 7500 yr was analyzed using Fourier spectrum and wavelet approaches. Multicentennial (250–450 yr) variability is present in the proxy record during most of the time range. This variability is suggested to reflect low-frequency variability in the North Atlantic Oscillation. Century-scale (90–130 yr) variation is another important feature of the tree-ring proxy data …

  • Solar Activity and Regional Climate

    Open AccessM G Ogurtsov, G E Kocharov et al.ARTICLERadiocarbon2001Citada por: 1Referencias: 19

    We performed a statistical analysis of the data on summer temperature anomalies in northern Fennoscandia (8–1995 AD) and found that a 70–130-yr cycle is present in this series during most of the time period. A comparison of the reconstructed northern Fennoscandia temperature with different indicators of solar activity (Wolf numbers, the length of solar Schwabe cycle, extended bi-decadal radiocarbon series, and data on sunspots observed by naked e…