Long-term characteristics of ice phenology in Karelian lakes

The statistical relationships between lake ice phenology (freeze and break-up dates, ice duration), air temperature and North Atlantic Oscillation (NAO) index are analysed for eight lakes in Karelia from 1950 to 2009. Linear trends over this time period are estimated. It is shown that in the last 20...

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Bibliographic Details
Published in:Estonian Journal of Earth Sciences
Main Authors: Tatiana Efremova, Nikolay Palshin, Roman Zdorovennov
Format: Article in Journal/Newspaper
Language:English
Published: Estonian Academy Publishers 2013
Subjects:
long-term data
lakes
ice phenology
climate change
Geology
QE1-996.5
karelia*
karelian
North Atlantic
North Atlantic oscillation
Online Access:https://doi.org/10.3176/earth.2013.04
https://doaj.org/article/ae96404cf0c84a9e9c0ee56759e405c1
Description
Summary:The statistical relationships between lake ice phenology (freeze and break-up dates, ice duration), air temperature and North Atlantic Oscillation (NAO) index are analysed for eight lakes in Karelia from 1950 to 2009. Linear trends over this time period are estimated. It is shown that in the last 20 years trends in the timing of ice phenomena are more evident than in the entire 60-year period. The statistical relationship between lake ice phenology and variability of regional air temperature is used in the empirical model to assess ice-related events on previously unstudied lakes in NW Russia.

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