Climate change
This page contains an assessment of climate change using the Pyrkilo method. the data used in this assessment is climate change related articles published in Helsingin Sanomat during Summer 2006, a series of invited "vieraskynä" -articles as its core.
The assessment is in draft phase and comments and contribution of everyone interested is very welcome
According to Encyclopaedia Britannica, climate is:
"Conditions of the atmosphere at a particular location over a long period of time; it is the long-term summation of the atmospheric elements (and their variations) that, over short time periods, constitute weather. These elements are solar radiation, temperature, humidity, precipitation (type, frequency, and amount), atmospheric pressure, and wind (speed and direction)." (Encyclopaedia Britannica Online, http://search.eb.com/eb/article-9106248, 13.7.2006)
Focus
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Scope
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Main indicators
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Causal chains
Prof. Matti Saarnisto (Geology)
Climate change
⇐ differences in global heat transfer
- ⇐ changes in ocean streams
- ⇐ movement of tectonic plates (1-40Ma)
⇐ weather changes
- ⇐ shifting of airflows
- ⇐ creation of mountain chains
- ⇐ movement of tectonic plates (1-40Ma)
- ⇐ creation of mountain chains
⇐ Reduction of CO2 in atmosphere through disintegration
- ⇐ creation of mountain chains
- ⇐ movement of tectonic plates (1-40Ma)
⇐ differences in global heat transfer
- ⇐ changes in ocean streams
- ⇐ melting rate of glaciers
- ⇐ sun energy impact on earth
- ⇐ changes in earth's orbit (10-1000ka)
- ⇐ sun energy impact on earth
- ⇐ melting rate of glaciers
⇐ differences in global heat transfer
- ⇐ changes in ocean streams
- ⇐ melting rate of glaciers
- ⇐ sun energy impact on earth
- ⇐ earth's inclination (10-1000ka)
- ⇐ sun energy impact on earth
- ⇐ melting rate of glaciers
VP Mikko Alestalo, (Meteorology)
⇒ melting of glaciers
Climate change
⇐ sun radiation variation (1-10ka)
- ⇐ ashes from volcanic eruptions (1-10ka)
⇐ increase of greenhouse gases
- ⇐ human activities (10-100a)
⇐ changes in ocean streams
- ⇐ melting of glaciers (10-100a)
Doc. Esko Kuusisto (Hydrology)
Climate change
⇐ water circulation
- ⇐ use of land
⇐ CO2 emissions to atmosphere
- ⇐ burning of fossil fuels
- ⇐ creation of pleasant microclimates for humans
Value judgements
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