water cycle

• physical factorsaffecting water cycle in arctic

  • negative heat balance
  • mean temp of -15
  • severe climate
  • low annual precipitation
  • permafrost around the tundra
  • short plant growth season
• conditionsaffecting water cycle in arctic

  • limited precipitation that falls is only snow
  • low temp means limited atmospheric moisture and low absolute humidity
  • limited transpiration due to limited vegetation
  • permafrost is a barrier to infiltration and percolation
  • limited soil moisture and groundwater storage
  • thawing active layer
• winter sub zero temperatures on water cycle in arctic

  • water storage is permafrost or snow
  • limited evapotranspiration
• summer above zero temperatures on water cycle in arctic

  • liquid water on surface as meltwater
  • some evapotranspiration from plants
  • temporary ponds and lakes
• geology affecting water cycle in arctic


  precambian igneous rock is very impermeable and prevents percolation
• relief affecting water cycle in arctic


  • flat with gentle slopes
  • extensive low relief means little infiltration
  • snow/meltwater stays on surface
• how are increased global temperatures affecting the water cycle in the arctic


  • increased atmospheric moisture
  • snow and rain increased
  • soil and surface wetting increased
  • runoff/evaporation increased
  • POSITIVE feedback loop