Table 11.

Data dictionary for the climate logger data (dataset vii-a-2) from an ITEX warming experiment in Endalen, Svalbard.

Variable name	Description	Variable type	Variable range or levels	Units	How measured
DateTime	Date and time of sampling	date_time	2004-09-03 16:00:29 - 2018-07-10 16:02:01	yyyy-mm-dd	recorded
Site	Site as the habitat; DH = Dryas heath, CH = Cassiope heath and SB = snowbed	categorical	CH - SB		defined
Treatment	Warming treatment; CTL = ambient conditions, OTC = warmed by Open top chamber (OTC)	categorical	CTL - OTC		defined
PlotID	Unique ID as the combination of Site and number; SB-1	categorical	CH-1 - SB-9		defined
LoggerType	Logger type; iButton and Tiny Tag	categorical	iButton - TinyTag		defined
LoggerLocation	Location of logger; surface and soil	categorical	soil - surface		defined
Variable	Climate variable; surface and soil temperature	categorical	Temperature - Temperature		defined
Value	Temperature value	numeric	−27.35 - 54.062	Degree celsius	recorded

The dataset contains climate logger observations sampled across three habitats between 2004 and 2018. Variable names, description variable type, range or levels, units and short description is given for all variables.