POTENTIAL EFFECTS OF CLIMATE CHANGES ON AQUATIC SYSTEMS: LAURENTIAN GREAT LAKES AND PRECAMBRIAN SHIELD REGION
The region studied includes the Laurentian Great Lakes and a diversity of smaller glacial lakes, streams and wetlands south of permanent permafrost and towards the southern extent of Wisconsin glaciation. We emphasize lakes and quantitative implications. The region is warmer and wetter than it has b...
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| Format: | Text |
| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.465.6850 http://www.glerl.noaa.gov/pubs/fulltext/1997/19970008.pdf |
| Summary: | The region studied includes the Laurentian Great Lakes and a diversity of smaller glacial lakes, streams and wetlands south of permanent permafrost and towards the southern extent of Wisconsin glaciation. We emphasize lakes and quantitative implications. The region is warmer and wetter than it has been over most of the last 12 000 years. Since 1911 observed air temperatures have increased by about 0.118C per decade in spring and 0.068C in winter; annual precipitation has increased by about 2.1 % per decade. Ice thaw phenologies since the 1850s indicate a late winter warming of about 2.58C. In future scenarios for a doubled CO2 climate, air temperature increases in summer and winter and precipitation |
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