Shallow groundwater thermal sensitivity to climate change and land cover disturbances: Derivation of analytical expressions and implications for stream temperature modeling
Advection
; Aquifers
; Atmospheric temperature
; Groundwater
; Groundwater resources
; Heat flux
; Logging (forestry)
; Rivers
; Sensitivity analysis
; Surface measurement
; Surface properties
; Advection-diffusion equation
; Air temperature variations
; Analytical expressions
; Groundwater temperatures
; Land surface temperature
; Long-term variability
; Stream temperature models
; Surface perturbations
; Climate change
; advection-diffusion equation
; air temperature
; aquatic community
; aquatic environment
; aquifer
; climate change
; climate modeling
; disturbance
; fish
; global warming
; groundwater
; heat flux
; hydrological modeling
; land cover
; sensitivity analysis
; temperature effect
; timber harvesting
; water temperature
英文摘要:
Climate change is expected to increase stream temperatures and the projected warming may alter the spatial extent of habitat for cold-water fish and other aquatic taxa. Recent studies have proposed that stream thermal sensitivities, derived from short-term air temperature variations, can be employed to infer future stream warming due to long-term climate change. However, this approach does not consider the potential for streambed heat fluxes to increase due to gradual warming of the shallow subsurface. The temperature of shallow groundwater is particularly important for the thermal regimes of groundwater-dominated streams and rivers. Also, recent studies have investigated how land surface perturbations, such as wildfires or timber harvesting, can influence stream temperatures by changing stream surface heat fluxes, but these studies have typically not considered how these surface disturbances can also alter shallow groundwater temperatures and streambed heat fluxes.
University of New Brunswick, Department of Civil Engineering, Canadian Rivers Institute, Fredericton, NB, Canada; Fisheries and Oceans Canada, Gulf Fisheries Centre, Moncton, NB, Canada; McGill University, Department of Earth and Planetary Sciences, McGill University, Montreal, QC, Canada; University of Calgary, Department of Geoscience, Calgary, AB, Canada
Recommended Citation:
Kurylyk B,L,, MacQuarrie K,et al. Shallow groundwater thermal sensitivity to climate change and land cover disturbances: Derivation of analytical expressions and implications for stream temperature modeling[J]. Hydrology and Earth System Sciences,2015-01-01,19(5)