Buenos Aires, Argentina ? The year 2004, punctuated by four powerful hurricanes in the Caribbean and deadly typhoons lashing Asia, was the fourth-hottest on record, extending a trend since 1990 that has registered the 10 warmest years, a U.N. weather agency said Wednesday.

The release of the report by the World Meteorological Organization came as environmental ministers from some 80 countries gathered in Buenos Aires for a United Nations conference on climate change, looking at ways to cut down on greenhouse gases that some say contribute heavily to Earth’s warming.

Scientists say a sustained increase in temperature change is likely to continue disrupting the global climate, increasing the intensity of storms, potentially drying up farmlands and raising ocean levels, among other things.

Michel Jarraud, the World Meteorological Organization secretary-general, said the warming and increased storm activity could not be attributed to any particular cause, but was part of a global warming trend that was likely to continue.

Scientists have reported that temperatures across the globe rose an average of 1 degree over the past century with the rate of change since 1976 at roughly three times that over the past 100 years.

The World Meteorological Organization said it expected Earth’s average surface temperature to rise 0.8 degrees above the normal 57 degrees Fahrenheit in 2004, adding this year to a recent pattern that included the four warmest years on record, with the hottest being 1998.

During the summer, heat waves in southern Europe pushed temperatures to near-record highs in southern Spain, Portugal and Romania, where thermostats peaked at 104 degrees.

The extreme weather of 2004 extended to storms.

The Caribbean had four hurricanes that reached Category 4 or 5 status, those capable of causing extreme and catastrophic damage. It was only the fourth time in recent history that so many were recorded.

Jarraud said the high temperatures like those seen in parts of Europe this year were expected to inch up in the coming years.