Changes in runoff
In the long term, average amounts of precipitation in the summer months will shrink, and evaporation will increase. The ground will become drier, there will be fewer rainy days and the longest precipitation-free period will last longer.
| Summer precipitation | Longest dry period in summer | Summer temperature | |
|---|---|---|---|
| Possible around mid-century | -25% t0 +10% | -25% t0 +10% | -25% t0 +10% |
| Possible by the end of the century | -25% t0 +10% | -25% t0 +10% | -25% t0 +10% |
A noticeable reduction in precipitation during the summer months is expected in the future. Although we are still experiencing a similar amount of rainfall on an average rainy day in summer as in the past, there are now more days without rain. The longest dry period in summer may last about a week longer on average by the middle of the century.
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A noticeable reduction in precipitation during the summer months is expected in the future. Although we are still experiencing a similar amount of rainfall on an average rainy day in summer as in the past, there are now more days without rain. The longest dry period in summer may last about a week longer on average by the middle of the century.
A noticeable reduction in precipitation during the summer months is expected in the future. Although we are still experiencing a similar amount of rainfall on an average rainy day in summer as in the past, there are now more days without rain. The longest dry period in summer may last about a week longer on average by the middle of the century.
« In extreme dryness, just one spark is enough to ignite a forest fire. The Climate
Scenarios CH2018 help
me to make more accurate assessments of the risk of forest fires as a result of climate
change. »
Dr. Marco Conedera, Head of Community Ecology Research Unit at WSL.