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Climate Change classes 1
UQ 3 May 07 Cars and ozone
UQ 2 Mar 07 Urban air
Climate change 2007 IPCC special
UQ 1 Nov Dec 06 Particles in air
Special: Oct. 2006 Communication
Nr 10 Sept. 2006 Africa's emissions
Nr 9 July 06 Air traffic
Special: June 06 Climate summit
Nr 8 April 2006 Ozone & N2 cycle
Nr 7 March 2006 Climate modeling
Nr 6 Feb. 2006 acid rain
Nr 5 Jan. 2006 oceanic sulfur
Special: Nov 05 Ozzy Ozone
Nr 4 Oct. 2005 light/satellites
Special: Sept 05 Cyclones
C: Formation & Properties
C: Conditions
R: Models for the future
L: Links
Nr 3 Sept. 2005 methane/energy
Special: July 05 Greenhouse Earth
Nr 2 June 2005 forest/aerosols
No 1 May 2005 vegetation/CO2

Tropical cyclones

Climate change cannot be accused of causing hurricanes but it could boost them.

Special edition on the occasion of hurricane 'Katrina'


Hurrikan Katrina

Hurricane Katrina was raging on August, 29th in the southern states of the US and caused the flooding of New Orleans as well as the destruction of other towns. (Photo: NASA)

ACCENT online special

Sept 2005

Symbol Geographie



Tropical cyclones originate from the interaction of complex factors in the weather system. They depend on the sea surface temperature and on the multi-decadal oscillation of currents in the oceans as well as in the air. We can never ascribe a single storm to human interaction but the most recent research shows that the average destruction potential of tropical cyclones can be amplified by global warming. Cyclones, therefore, are becoming an increasing menace for the densly populated coastal regions of the subtropical and tropical latitudes.



Development, properties and impacts

We study how a storm is formed from a low pressure system and where such storms occur. The damage caused depends not only on the storm force but also on the behaviour of the people. [more ...]


Conditions for stormy times

The Earth's rotation, high water temperatures and low wind shear let cyclones grow. The multi-decadal oscillation of global weather patterns also has an influence on the occurence of storms and makes it difficult to estimate the human influence. [more ...]

Warning for tomorrow

We cannot assign the unusually strong hurricane seasons 2004 and 2005 to climate change. However, it is likely that the destructive forces of storms increase significantly in a warmer world. We have a look at the most recent estimations of climate research. [more ...]


Low pressure systems, storms and their impacts are not only interesting meteorology topics, but they are for many peoople of life determining importance. For this reason, there are many websites including explanations, observations and forecasts of such systems. [more ...] 


information for teachers 

Information for teachers

This special edition can be used in classes in the context of "weather / general atmospheric circulation". The ideal starting point is the topic: pressure systems and cyclones.
It is offered as a short release without the categories 'activities' and'further information' for integration into classes.

Please click here in order to access the "material corner".




last updated 21.06.2006 | © ACCENT - Atmospheric Composition Change 2013