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Meteorological data from Tarfala Ridge, northern Sweden

Tarfala Research Station staff

This dataset contains meteorological data acquired by Tarfala Research Station’s automated weather station located at Tarfala Ridge, northern Sweden. Tarfala Ridge is an important site for permafrost research, e.g. in the context of the EU-funded PACE (Permafrost and Climate in Europe) project, followed by the European Science Foundation network PACE-21 initiative, and then continued as part of Tarfala Research Station’s base program.

The measurements contained in this dataset start in June 2000 and are continuously updated, but the occasionally extreme conditions at the site pose a challenge to continuous data acquisition.

Meteorological variables reported here are: air temperature, relative humidity, short wave radiation, and wind speed.

Note that due to failure of sensors and/or batteries, not all variables are recorded at all times. Also, the frequency of measurement acquisition (e.g. values reported every 10 minutes, or every 30 minutes) can differ for different time periods.

AtmosphereWeather observationsAutomated weather stationTarfala RidgeTarfala Research StationAir temperatureRelative humidityWind speedShort wave radiation

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Name

tarfala-ridge-meteorology

Version

2

Citation

Tarfala Research Station staff (2025) Meteorological data from Tarfala Ridge, northern Sweden. Dataset version 2. Bolin Centre Database. https://doi.org/10.17043/tarfala-ridge-meteorology-2

Data description

The dataset consists of 25 csv files, named as CC_tarfala-tarfalaridge-meteorology_YYYY-MM_YYYY-MM.csv where CC = 01, 02, ... to 25 is a counter, followed by the name of the dataset, and the time period YYYY-MM_YYYY-MM during which measurements were acquired (e.g. from September 2022 to September 2023).
Total size: 12.9 MB

The individual datafiles contain values for the following meteorological variables collected at Tarfala Ridge.
Geographical location: 67.91910 °N, 18.64160 °E
Elevation: 1550 m above sea level

Variables
In all files from 2000 to 2013
  • year Year stamp (YYYY)
  • julian_day Day stamp (DDD)
  • time Time stamp (hhmm) (in UTC+1)
  • ta_avg Average air temperature (°C) as 6h arithmetic mean of measurements conducted once per minute. Measured by a HygroClip 2S3 in a Solar Radiation Shield, at c. 2.4 m above ground.
  • rh Relative humidity of air (%). Measured by a HygroClip 2S3 in a Solar Radiation Shield, at c. 2.4 m above ground. Transient measurement at output interval.
In all files from 2014 onward
  • date_time Date and time stamp (YYYY-MM-DD hh:mm) (in UTC+1).
  • ta_avg Average air temperature (°C), 10 minute or 30 minute arithmetic mean of measurements conducted once per minute. Measured by a HygroClip 2S3 in a Solar Radiation Shield, at c. 2.4 m above ground.
  • rh Relative humidity of air (%). Measured by a HygroClip 2S3 in a Solar Radiation Shield, at c. 2.4 m above ground. Transient measurement at output interval.
  • sw_avg Incoming shortwave radiation (W/m²). Measured by a CS300, at c. 2.3 m above ground. Measured every ten seconds. Arithmetic mean of all readings within output interval.
  • ws_avg Wind speed (m/s), measured by a Vector Instruments A100R Anemometer, at c. 2.4 m above ground. Measured every ten seconds. Arithmetic mean of all readings within output interval.
Not in all files
  • Ws_max Maximum of ws_avg
Files

01_tarfala-tarfalaridge-meteorology_2000-06_2000-12.csv

  • 16 June 2000, 00:01 to 31 December 2000, 18:01
  • 796 records
  • Variables reported in 6 hour intervals.
  • These data have previously been published at the Bolin Centre Database, Tarfala Data — Permafrost, as PACE_met.csv.Obvious erroneous values (total of 125 occasions) in this datafile have been removed/replaced by NaN (e.g. sensor readings indicating air temperatures of -240 C).

02_tarfala-tarfalaridge-meteorology_2001-01_2001-08.csv

  • 1 January 2001, 00:01 to 17 August 2001, 18:01
  • 716 records
  • Variables reported in 6 hour intervals.
  • These data have previously been published at the Bolin Centre Database, Tarfala Data — Permafrost, as PACE_met.csv.Obvious erroneous values (total of 1 occasion) in this datafile have been removed/replaced by NAN (e.g. sensor readings indicating air temperatures of +6999 C).

03_tarfala-tarfalaridge-meteorology_2002-04_2002-07.csv

  • 20 April 2002, 00:01 to 22 July 2002, 18:01
  • 372 records
  • Variables reported in 6 hour intervals.
  • These data have previously been published at the Bolin Centre Database, Tarfala Data — Permafrost, as PACE_met.csv.

04_tarfala-tarfalaridge-meteorology_2003-04_2003-12.csv

  • 1 April 2003, 00:01 to 31 December 2003, 18:01
  • 1092 records
  • Variables reported in 6 hour intervals.
  • These data have previously been published at the Bolin Centre Database, Tarfala Data — Permafrost, as PACE_met.csv. Obvious erroneous values (total of 40 occasions) in this datafile have been removed/replaced by NAN (e.g. sensor readings indicating far too high air temperatures).

05_tarfala-tarfalaridge-meteorology_2004-01_2004-12.csv

  • 1 January 2004, 00:01 to 31 December 2004, 18:01
  • 1464 records
  • Variables reported in 6 hour intervals.
  • These data have previously been published at the Bolin Centre Database, Tarfala Data — Permafrost, as PACE_met.csv.

06_tarfala-tarfalaridge-meteorology_2005-01_2005-12.csv

  • 1 January 2005, 00:01 to 31 December 2005, 18:01
  • 1460 records
  • Variables reported in 6 hour intervals.
  • These data have previously been published at the Bolin Centre Database, Tarfala Data — Permafrost, as PACE_met.csv.

07_tarfala-tarfalaridge-meteorology_2006-01_2006-12.csv

  • 1 January 2006, 00:01 to 31 December 2006, 18:01
  • 1460 records
  • Variables reported in 6 hour intervals.
  • These data have previously been published at the Bolin Centre Database, Tarfala Data — Permafrost, as PACE_met.csv.

08_tarfala-tarfalaridge-meteorology_2007-01_2007-12.csv

  • 1 January 2007, 00:01 to 31 December 2007, 18:01
  • 1460 records
  • Variables reported in 6 hour intervals.
  • These data have previously been published at the Bolin Centre Database, Tarfala Data — Permafrost, as PACE_met.csv.

09_tarfala-tarfalaridge-meteorology_2008-01_2008-12.csv

  • 1 January 2008, 00:01 to 31 December 2008, 18:01
  • 1464 records
  • Variables reported in 6 hour intervals.
  • These data have previously been published at the Bolin Centre Database, Tarfala Data — Permafrost, as PACE_met.csv.

10_tarfala-tarfalaridge-meteorology_2009-01_2009-12.csv

  • 1 January 2009, 00:01 to 31 December 2009, 18:01
  • 1460 records
  • Variables reported in 6 hour intervals.
  • These data have previously been published at the Bolin Centre Database, Tarfala Data — Permafrost, as PACE_met.csv.

11_tarfala-tarfalaridge-meteorology_2010-01_2010-12.csv

  • 1 January 2010, 00:01 to 31 December 2010, 18:01
  • 1460 records
  • Variables reported in 6 hour intervals.
  • These data have previously been published at the Bolin Centre Database, Tarfala Data — Permafrost, as PACE_met.csv.

12_tarfala-tarfalaridge-meteorology_2011-01_2011-09.csv

  • 1 January 2011, 00:01 to 13 September 2011, 18:01
  • 1024 records
  • Variables reported in 6 hour intervals.
  • These data have previously been published at the Bolin Centre Database, Tarfala Data — Permafrost, as PACE_met.csv.

13_tarfala-tarfalaridge-meteorology_2012-05_2012-09.csv

  • 12 May 2012, 00:01 to 10 September 2012, 18:01
  • 444 records
  • Variables reported in 6 hour intervals.
  • These data have previously been published at the Bolin Centre Database, Tarfala Data — Permafrost, as PACE_met.csv.Obvious erroneous values (total of 6 occasions) in this datafile have been removed/replaced by NAN (e.g. sensor readings indicating air temperatures of +6999 C).

14_tarfala-tarfalaridge-meteorology_2013-07_2013-08.csv

  • 12 July 2013, 00:01 to 26 August 2013, 18:01
  • 184 records
  • Variables reported in 6 hour intervals.
  • These data have previously been published at the Bolin Centre Database, Tarfala Data — Permafrost, as PACE_met.csv.Obvious erroneous values (total of 13 occasions) in this datafile have been removed/replaced by NAN (e.g. sensor readings indicating air temperatures of +6999 C).

15_tarfala-tarfalaridge-meteorology_2014-09_2014-12.csv

  • 15 September 2014, 16:00 to 31 December 2014, 23:50
  • 15456 records
  • Variables reported in 10 minute intervals.
  • These data have previously been published at the SITES data portal.

16_tarfala-tarfalaridge-meteorology_2015-01_2015-12.csv

  • 1 January 2015, 00:00 to 31 December 2015, 23:50
  • 52560 records
  • Variables reported in 10 minute intervals.
  • These data have previously been published at the SITES data portal.

17_tarfala-tarfalaridge-meteorology_2016-01_2016-12.csv

  • 1 January 2016, 00:00 to 31 December 2016, 23:50
  • 52704 records
  • Variables reported in 10 minute intervals.
  • These data have previously been published at the SITES data portal.

18_tarfala-tarfalaridge-meteorology_2017-01_2017-12.csv

  • 1 January 2017, 00:00 to 31 December 2017, 23:50
  • 52560 records
  • Variables reported in 10 minute intervals.
  • These data have previously been published at the SITES data portal.

19_tarfala-tarfalaridge-meteorology_2018-01_2018-12.csv

  • 1 January 2018, 00:00 to 31 December 2018, 23:50
  • 52560 records
  • Variables reported in 10 minute intervals.
  • These data have previously been published at the SITES data portal.

20_tarfala-tarfalaridge-meteorology_2019-01_2019-12.csv

  • 1 January 2019, 00:00 to 31 December 2019, 23:30
  • 17520 records
  • Variables reported in 30 minute intervals.
  • These data have previously been published at the SITES data portal.

21_tarfala-tarfalaridge-meteorology_2020-01_2020-09.csv

  • 1 January 2020, 00:00 to 03 September 2020, 13:30
  • 11836 records
  • Variables reported in 30 minute intervals.
  • These data have previously been published at the SITES data portal.

22_tarfala-tarfalaridge-meteorology_2020-09_2021-09.csv

  • 03 September 2020, 14:00 to 14 September 2021, 10:30
  • 18042 records
  • Variables reported in 30 minute intervals.

23_tarfala-tarfalaridge-meteorology_2021-09_2022-09.csv

  • 14 September 2021, 11:30 to 15 September 2022, 10:00
  • 17566 records
  • Variables reported in 30 minute intervals.

24_tarfala-tarfalaridge-meteorology_2022-09_2023-09.csv

  • 15 September 2022, 10:30 to 13 September 2023, 14:00
  • 17423 records
  • Variables reported in 30 minute intervals.

25_tarfala-tarfalaridge-meteorology_2023-09_2024-09.csv

  • 13 September 2023, 14:30 to 11 September 2024, 17:00
  • 17478 records
  • Variables reported in 30 minute intervals.

Comments

Version history

Version 2

Data for 2000 – ⁠2024

Version 1

Initial release. Data for 2014⁠ – ⁠2024

Project

Base program of Tarfala Research Station

Publisher

Bolin Centre Database

License

Open Data Commons Attribution License (ODC-By) v1.0

First name

Nina

Last name or organisation

Kirchner

Email address

nina.kirchner@su.se

Address

Tarfala Research Station and Department of Physical Geography; Stockholm University

Postal code

SE-106 91

City

Stockholm

Country

Sweden

GCMD science keyword

Earth science > Atmosphere

GCMD location

Continent > Europe > Northern Europe > Scandinavia > Sweden

Begin date

2000-06-16

End date

2024-09-11

DOI

10.17043/tarfala-ridge-meteorology-2

Time

2025-11-16T15:38:12.22+00:00

Versions

  • 2 2025-11-16T15:38:12.22+00:00
  • 1 2025-10-27T15:24:07.712+00:00
  • 1 2025-10-27T15:18:02.047+00:00