Several regions of the world are currently coping with severe weather-related events: flash floods and widespread flooding in large parts of Asia and parts of Central Europe while other regions are also affected: by heatwave and drought in Russian Federation, mudslides in China and severe droughts in sub-Saharan Africa. While a longer time range is required to establish whether an individual event is attributable to climate change, the sequence of current events matches IPCC projections of more frequent and more intense extreme weather events due to global warming. The Monsoon activity in Pakistan and other countries in South-East Asia is aggravated by the la Niña phenomenon, now well established in the Pacific Ocean.
The Pakistan Meteorological Department (PMD) has been issuing warnings since the onset of the pre-Monsoon season in mid-June and issues continuous weather and flood advisories and warnings to assist in emergency relief (
http://www.pakmet.com.pk) Heavy and persistent rainfall has been recorded since July causing severe flash floods and widespread flooding. The event affected first the north-western part of Pakistan and later extended to large parts of the country, with Khyber-Pakhtonkwa, Punjab and Sindh among the most affected provinces. The province of Khyber-Pakhtonkwa received nearly 180 % excess of total July rainfall compared to the monthly long-term average.
According to Roshydromet, the Russian Federal Service for Hydrometeorology and Environmental Monitoring, July 2010 is the warmest month ever in Moscow since the beginning of modern meteorological records, 130 years ago. Temperature has exceeded the long-term average by 7.8° C (compared to the previous record in July 1938 with 5.3° C above average). Record high temperatures varying between 35° C and 38.2° C were registered for more than 7 consecutive days end July, with the heatwave continuing into August. The daily temperature of 38.2° C on 29 July was the highest ever in Moscow (compared to a long-term average of approximately 23° C). The minimum temperature of nearly 25°C (recorded during the night before sunrise) also scored a significant increase compared to the historical average of about 14° C. Those temperatures are characteristic for a heatwave of a rare intensity and duration.
The World Meteorological Organization coordinates the global collection of climate data for long-term scientific research. The Organization, with its partners, is working towards a Global Framework for Climate Services, decided upon in 2009 by World Climate Conference-3, to provide information and services for adapting to climate change.
http://www.desdemonadespair.net/2010/08/wmo-unprecedented-sequence-of-extreme.html