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TitleA watershed-scale study of climate change impacts on groundwater recharge (Annapolis Valley, Nova Scotia, Canada)
AuthorRivard, CORCID logo; Paniconi, C; Vigneault, H; Chaumont, D
SourceHydrological Sciences Journal vol. 59, issue 8, 2014 p. 1437-1456, Open Access logo Open Access
Alt SeriesEarth Sciences Sector, Contribution Series 20120019
PublisherInforma UK Limited
Mediapaper; on-line; digital
File formatpdf
ProvinceNova Scotia
NTS21H/01; 21H/02; 21H/08
AreaAnnapolis Valley
Lat/Long WENS-65.0000 -64.0000 45.5000 44.8333
Subjectshydrogeology; environmental geology; Nature and Environment; groundwater; groundwater surveys; groundwater regimes; groundwater resources; climate effects; climate; watersheds; climate change
Illustrationslocation maps; plots; tables
ProgramGroundwater Geoscience, Aquifer Assessment & support to mapping
Released2014 07 02
AbstractThe potential impacts of future climate change on the evolution of groundwater recharge are examined at a local scale for a 546-km2 watershed in eastern Canada. Recharge is estimated using the infiltration model Hydrologic Evaluation of Landfill Performance (HELP), with inputs derived from five climate runs generated by a regional climate model in combination with the A2 greenhouse gas emissions scenario. The model runs project an increase in annual recharge over the 2041-2070 period. On a seasonal basis, however, a marked decrease in recharge during the summer and a marked increase during the winter are observed. The results suggest that increased evapotranspiration resulting from higher temperatures does not offset the large increase in winter infiltration. In terms of individual water budget components, clear differences are obtained for the different climate change scenarios. Monthly recharge values are also found to be quite variable, even for a given climate scenario. These findings are compared with results from two regional-scale studies.

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