An Overview of Climate Change Induced Hydrological Variations in Canada for Irrigation Strategies
Autor: | Farhat Abbas, Bishnu Acharya, Wayne Peters, Nicholas Krouglicof, Aitazaz A. Farooque, Qing Li, Ahmad Zeeshan Bhatti |
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Jazyk: | angličtina |
Rok vydání: | 2021 |
Předmět: |
Irrigation
precipitation patterns Geography Planning and Development Climate change TJ807-830 hydrology Management Monitoring Policy and Law global warming aquifers TD194-195 Renewable energy sources Hydrology (agriculture) Streamflow GE1-350 Precipitation geography geography.geographical_feature_category Environmental effects of industries and plants Renewable Energy Sustainability and the Environment Global warming Glacier Arctic ice pack Environmental sciences sea level rise Environmental science Physical geography glacier melt |
Zdroj: | Sustainability, Vol 13, Iss 4833, p 4833 (2021) |
ISSN: | 2071-1050 |
Popis: | Climate change is impacting different parts of Canada in a diverse manner. Impacts on temperature, precipitation, and stream flows have been reviewed and discussed region and province-wise. The average warming in Canada was 1.6 °C during the 20th century, which is 0.6 °C above the global average. Spatially, southern and western parts got warmer than others, and temporally winters got warmer than summers. Explicit implications include loss of Arctic ice @ 12.8% per decade, retreat of British Columbian glaciers @ 40–70 giga-tons/year, and sea level rise of 32 cm/20th century on the east coast, etc. The average precipitation increased since 1950s from under 500 to around 600 mm/year, with up to a 10% reduction in Prairies and up to a 35% increase in northern and southern parts. Precipitation patterns exhibited short-intense trends, due to which urban drainage and other hydraulic structures may require re-designing. Streamflow patterns exhibited stability overall with a temporal re-distribution and intense peaks. However, surface water withdrawals were well under sustainable limits. For agriculture, the rainfed and semi-arid regions may require supplemental irrigation during summers. Availability of water is mostly not a limitation, but the raised energy demands thereof are. Supplemental irrigation by water and energy-efficient systems, adaptation, and regulation can ensure sustainability under the changing climate. |
Databáze: | OpenAIRE |
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