The WMO and UN's IPCC say extreme weather events will become more frequent

Weather and climate have been marked by record extremes in many regions across the world since January 2007, says the World Meteorological Organization (WMO)/ Intergovernmental Group on Climate Change (IPCC).

In January and April 2007 it is likely that global land surface temperatures ranked warmest since records began in 1880, 1.89°C warmer than average for January and 1.37°C warmer than average for April.

Several regions have experienced extremely heavy precipitation, leading to severe floods. In England and Wales, May to July in 2007 was the wettest (406mm) since records began in 1766. At least nine people died as a result of the floods and damage is estimated to cost in excess of £3bn in insured losses and could even reach £5bn.

The IPCC report notes an increasing trend in extreme events observed during the last 50 years. It also says it is "very likely" that hot extremes, heat waves and heavy precipitation events will continue to become more frequent.

“In England and Wales, May to July in 2007 was the wettest since records began in 1766

In January, Winter Storm Kyrill affected much of northern Europe with torrential rains. Insured losses amounted to around ?5bn - a6bn, making it the 12th costliest natural catastrophe since 1970, according to Moody's.

In addition, heavy rains during June ravaged areas across southern China. Other extreme events include Cyclone Gonu in June, the first documented cyclone in the Arabian Sea, and July heatwaves in southeastern Europe which reached 45°C in Bulgaria, setting a new record.

According to the WMO and IPCC, the warming of the climate system is unequivocal.