This file outlines the structure of the Kevo Subarctic Research Station temperature/humidity network and data files. Between 31 Aug and 8 September 2007, 60 sites were installed with temperature/RH loggers in a network surrounding the research station. Loggers were set to record every 30 minutes. Some recorded temperature and RH, and some just temperature (RH is sometimes missing). The logger sites are listed in alphabetical order and the list of station names is given in the excel spreadsheet, loggerlocationsFinland.xls. The first tab gives the station coordinates. Every year since 2007 the sites have been downloaded (usually, but not always in March). Individual loggers are switched over in the field, details of which are given in the additional tabs (listed by month). Sometimes because of logger swtich over times there is temporary missing data as the logger is switched over - given symbol . in the actual data files. For the data itself, there are two separate files, one for air temperature (airtemphr0718.txt) and one for RH (humhr0718.txt). Each row is an observation time. The first five values in each row are: case year month date time (all times Finnish Standard Time: UTC+2 hrs). There is no daylight saving. Subsequent columns are the data for the 65 stations in the same alphabetical order, e.g. allalake, allasum, jescairn, jese1 etc In late March 2012 five new sites were added to the network, sire, sirhp, sirw, vuoe and vuow, making 65 sites in total. Thus data is missing for the first 5 years for these stations. The rest of this file gives details of bad data, or other relevant information which pertains to individual loggers in individual years. In most cases bad data has been removed. Downloads on 26 Mar - 8 Apr 2008 Allasum logger failed (bad data) - no data for 2007-2008 Lasse1 logger ran slow - data ok up to 7 Nov 2007 only Koa2 logger ran slow - data ok up to 18 Feb 2008 only Tsan1 logger stopped early - data ok up to 31 Mar 2008 only (1 missing day) Wind1 low battery - stopped recording at low temperatures (below -25degC) - missing data various dates in late Feb and early March 2018 Downloads on 28 Jan - 5 Feb 2009 Jess1 logger stopped early - data ok up to 14 Jan 2009 only Downloads on 30 May - 5 Jun 2009 Jese5 logger stopped early - data ok up to 5 Feb 2009 only Puks3 logger stopped early - data ok up to 7 Feb 2009 only Puks4 logger stopped early - data ok up to 6 Feb 2009 only Puks5 logger stopped early - data ok up to 7 Feb 2009 only Lasse2 logger stopped early - data ok up to 10 May 2009 only Loggers in May/Jun 2009 were programmed for 1 hr interval only - so up to March 2010 (next download) there is no half-hourly data. Downloads on 13 - 25 Mar 2010 Kpa1 logger failed - no data Jetty logger failed - no data Jesn logger failed - no data Tsae1 logger stopped early - data ok up to 4 Jan 2010 only Jumb1 logger stopped early - data ok up to 1 Feb 2010 only Jumb2 logger stopped early - data ok up to 6 Jan 2010 only Puks4 logger fell out of screen and in snow - 1 Oct 2009 onwards (data deleted) Downloads on 22 - 28 Jan 2011 Jese3 logger stopped early - data ok up to 19 Dec 2010 only Jumb1 logger stopped early - data ok up to 26 Nov 2010 only Downloads on 11 - 17 Sep 2011 Tsacol logger found hanging out of shield on 12 Sep - treat data with caution (not deleted) - some possible warm temps Wind1 logger low battery - data stopped logging at low temperatures - data missing from 29 Jan to 28 Feb- also some missing data on 29 Mar. Downloads 23 - 30 Mar 2012 Kevv1 logger stopped recording 5-6 Feb 2012 due to extreme low temperatures (suspected well below -40degC) - some data missing new sensors installed 26 March at sire, sirhp and sirw new sensors installed 30 March at vuoe and vuow Downloads 10 - 21 Mar 2013 All sensors good - no problems! 8 - 9 Oct 2013 Loggers at following sites were found to have faulty O rings which would lead to premature battery decay. The following sites were replaced: martw, tsiw1, tsiw2, pukw1, pukw2, marte, tsie2, puke2, jese1, jese2, jese3, jescairn, wind2, sire (14 loggers) Wind2 logger battery failed - data ok up to 5 Jul 2013 only Marte logger battery failed - data ok up to 9 Jul 2013 only Martw logger battery failed - data ok up to 3 Aug 2013 only Jese1 logger battery failed - data ok up to 6 Aug 2013 only Jese2 logger battery failed - data ok up to 28 Aug 2013 only Pukw2 logger battery failed - data ok up to 7 Sep 2013 only Pukw1 logger battery failed - data ok up to 12 Sep 2013 only Data is then available again from October 2013 Downloads 16 - 27 Mar 2014 Tsan0 logger went 5 hrs slow - data has been adjusted and appears ok but treat with caution Downloads 8 - 19 Mar 2015 Jese2 records extreme high temperatures (sometimes>32degC) from 7 - 31 July 2014 - out of character with other stations. Reason is unknown. Data is deleted. Downloads 6 - 18 Mar 2016 Jese6 logger stopped early - data ok up to 17 December 2015 Lasse3 logger fell out of screen - was found in the snow - time of fall judged to be 18 Aug 2015 from data - subsequent data deleted Downloads 10 - 22 Mar 2017 All sensors good - no problems! Downloads 9 - 18 Feb 2018 Tsacol tree fell over and logger/screen found buried in snow - time of fall judged to be 16 Sep 2017 from data - subsequent data deleted Downloads 22 Feb - 9 March 2019 Tsan1 logger bad battery - logger ran 8 days slow and failed to record extreme low temperatures. There is therefore missing data in Feb/March 2018 and Jan/Feb 2019. Data has been adjusted. Downloads 20 Feb - 6 March 2020 Puke2 logger bad battery: Sporadic data lost from October 2019 to February 2020 when temperatures were low. Tsan2 logger temporarily stopped - data lost in January 2020, data has been adjusted. Downloads 8 - 11 Sep 2020 52 sites downloaded remotely (Ilkka) - no problems! Downloads 18 Feb 2021 13 sites downloaded remotely (Ilkka) - no problems! Downloads 5 - 15 July 2021 52 sites downloaded remotely (Tommi) Tsae1 logger bad battery. Logger stopped working during cold periods in December 2020 and February 2021: data missing Downloads 18 -20 Sep 2021 14 sites downloaded manually (original Feb sites plus Jese1) - no problems! Downloads 10 - 21 Mar 2022 Jese4 - bad battery: sporadic missing data gaps: Jan-Mar 2022 Puks5 - bad battery: sporadic missing data gaps: Nov 2021 - Mar 2022 Sire - logger stopped early: Data ok up to 27 November 2021 only Tsaw - bad battery: sporadic missing data gaps: Nov 2021 - Mar 2022 Tsie2 - logger stopped in December 2021 for 36 hours. Data adjusted - missing period in Dec 2021. Jese3 logger fell over and became buried in snow: time of fall estimated at 31 Dec 2021 (end of 2021). Data for Jan-Mar 2022 deleted.