Soil and air temperature control the composition and productivity of tundra plant communities and different species of Arctic and alpine plants respond differently to changing soil and air temperatures, which can lead to changes in community composition The Torngat National Park monitors soil and air temperature using temperature loggers deploys at several locations in the park. Air temperatures (degrees Celsius) are measured each hour using Onset ProV2 data loggers housed in a radiation shield anchored to a firm metal post 1.5 m above ground level. Soil temperature readings (degrees Celsius) have been collected using Onset Hobo Pendant or Hobo Tidbit data loggers buried at a depth of 10 cm and set to record temperatures every hour.