Snow depth and ground frost depth at a boreal fen (Oulanka National Park, NE Finland) 1980-2023

Snow and ground frost depths were measured at a boreal fen close to Oulanka research station, northeastern Finland (66°22'N, 29°19'E) in years 1980 to 2023, as part of ongoing long-term surveys conducted by the research station staff. Data were collected manually by reading snow depths on...

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Bibliographic Details
Main Authors: Riku, Paavola, Lämsä, Juho
Format: Dataset
Language:English
Published: PANGAEA 2024
Subjects:
Boreal
DATE/TIME
Event label
fen
Finland
ground frost depth
INTERACT
International Network for Terrestrial Research and Monitoring in the Arctic
LATITUDE
LONGITUDE
Monitoring station
MONS
OULANKA_ONP_R21
OULANKA_ONP_R22
OULANKA_ONP_R23
OULANKA_ONP_R24
OULANKA_ONP_R25
OULANKA_ONP_R26
OULANKA_ONP_R27
POLARIN
POLAR RESEARCH INFRASTRUCTURE NETWORK
Season
snow depth
Station label
Visual inspection of survey sticks containing water and ink
Visual quantification by permanent survey sticks
permafrost
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.965781
https://doi.org/10.1594/PANGAEA.965781
Description
Summary:Snow and ground frost depths were measured at a boreal fen close to Oulanka research station, northeastern Finland (66°22'N, 29°19'E) in years 1980 to 2023, as part of ongoing long-term surveys conducted by the research station staff. Data were collected manually by reading snow depths on survey sticks placed at the fen on fixed locations once per week. Ground frost depths were manually recorded by visually inspecting hollow tubes placed inside the snow depth survey sticks containing water and ink. The level of frozen coloured water was thus observed. The site is outside permafrost zone, so only the top layer of the soil freezes during winter. The data consists of separate weekly values of six (1980-2002) or seven (2007-) survey sticks, and of average values for the snow depth and ground frost depth. The data has two missing seasons; 1981-1982 and 2002-2003, and for 1989-1991 only ground frost depth was recorded. 2004 to 2007 the data consists of only one measurement stick. In 2007 one extra survey stick was added to the survey and the data is complete from thereafter. Despite some missing values in earlier years, the dataset contains 43 years of ongoing snow depth and ground frost depth recordings on a natural boreal fen.

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