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What are the current problems in modeling climate change?

The main problems in modeling climate change is the limited amout of observation data and limited computer capacity. The observation data is essential for climate modeling since it is used as an initial state for the models and to evaluate the models capacity to reproduce past climate. Especially over the big seas the observation data is scarce. The computer capacity limits the resolution and time period of the model runs.

 

Since when is there concern for climate change and to what extent?

Early attempts to understand climate phenomena resulted in conceptual models. Greek astronomer-geographers such as Eratosthenes (3rd century BCE) deduced the Earth’s spherical shape and connected climate to the inclination of the sun. Ptolemy (2nd century CE) divided the Earth into different climatic zones. In the 19th century Tyndall and Chamberlin found the carbon cycle to play an important role in understanding of climate.

Are extreme events like heat waves, droughts or floods expected to change as the Earth's climate change?

Yes; the type, frequency and intensity of extreme events are expected to change as Earth’s climate changes, and these changes could occur even with relatively small mean climate changes. Changes in some types of extreme events have already been observed, for example, increases in the frequency and intensity of heat waves and heavy precipitation events (see IPCC AR4 WG1 FAQ 3.3).

 

 

Why is climate change of concern of society?

Scenes of flooding, drought and storms in Europe have recently shown us how much climate change and extreme weather conditions can affect our lives. Understanding and predicting what the next season might bring, or predicting how climate will change over the next century is of vital importance - both for our economy and for society. Some facts about climate change:
 
  • Our planet is exposed to global warming because of increased greenhouse gas concentration

Climate communication

How to communicate on climate? Hazard, impact and risk management

Welcome!

IS-ENES JRA5 deals with the common practice to deliver climate information to many different users of both impact and decision-maker communities in the climate modeling community. The objective is to provide services to users and help data providers in this mission. The e-Impact portal will serve as a support for this purpose. There is a growing interest to use climate information, but delivery of climate variables as model outputs to users for impact studies is in general not well understood and underestimated.
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