Weather-related disasters have quadrupled over the last two decades, from an average of 120 a year in the early 1980s to as many as 500 today, according to a claim made by international agency Oxfam. The increase in these extreme climatic events is in line with climate models developed by the international scientific community.

The number of people affected by all disasters has risen from an average of 174 million a year between 1985 and 1994 to 254 million a year between 1995 and 2004. Earlier this year the Asian floods alone affected 248 million people.

Though the colossal crises such as the African famines of the early 1980s, the Bangladesh cyclone of 1991 and the Asian tsunami cause an enormous loss of life, the new worrying trend is the increase in small to medium-sized disasters. The death toll caused by these disasters has risen from an average of 6,000 in 1980 to 14,000 in 2005.

One short disaster after another, even if relatively small, can push poor people and communities into a downward spiral from which is difficult to recover. To make matters worse, rich countries tend to prioritise their aid spending into the more high-profile emergencies and to those countries that are seen as in line with their foreign policy priorities.

Some countries are particularly prone to weather-related disasters. In August 2007 Vietnam?s central provinces were hit by Typhoon Pabuk which caused extensive flooding and in October the same area was hit by landslides and floods in another typhoon.

Vietnam is also likely to be hardest hit of all by rising sea levels according to World Bank research. Meanwhile drought there is also becoming more common. New Oxfam research in Ninh Thuan province shows how, during droughts, women suffer most, having to walk long distances to fetch water in extreme temperatures.

For poor people who are dependent upon the land, according to the report, even a slight change in the climate can have a long term impact on their livelihoods.

To deal with the symptoms of weather related disasters, Oxfam is calling on rich country governments and the UN to make humanitarian aid faster, fairer and more flexible and to improve ways to prepare for and reduce the risk of disasters.

The overseas agency is worried how rising green house gas emissions are causing climate change which is triggering an increase in weather-related disasters and must be tackled; and therefore they’re calling on governments meeting at the UN Conference on Climate Change in Bali next month to agree a mandate to negotiate a global deal that will provide assistance to developing countries to cope with the impacts of climate change and to reduce green house gas emissions, with rich countries moving first and fastest since they are most responsible for climate change.