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WMO Statement on the Status of the Global Climate


WMO, working with UNEP (United Nations Environment Programme), is responsible for the periodic assessments of climate change issued by the Intergovernmental Panel on Climate Change (IPCC). In June 1993, the 45th session of the Executive Council of WMO decided that greater efforts were needed to promote the WMO role as a provider of credible scientific information on climate and its variability and requested that arrangements be made for the regular wide distribution of WMO statements on the status of the global climate. In response to this decision, statements have been provided annually through the WCDMP.

2013

2013

sm2012

2012

2011

2011

CA_2.1

2010

CA_2.2

2009

CA_2.3

2008

CA_2.4

2007

See the complete series of online available WMO climate statements

Special assessments  

At its fifteenth session, held in Antalya, Turkey, in February 2010, the WMO Commission for Climatology decided that climate monitoring activities would henceforth include, inter alia, information gathering and analyses on extreme weather and climate events that might be considered especially relevant in terms of major societal impacts. In this respect, the Commission agreed on a new approach to facilitate, whenever possible, an appropriate scientific description of causes and effects specifically associated with these key events, as a complement to the more general Statements on the Status of the Global Climate, which WMO regularly publishes on a yearly basis in collaboration with its members.

The Global Climate 2001-2010: a decade of climate extremes

The report analysed global and regional temperatures and precipitation, as well as extreme events The 100-page report and an executive summary, incorporating findings from a unique survey of 139 National Meteorological and Hydrological Services and socio-economic data and analysis from several UN agencies and partners.

Contributions from WMO Members

Sum

Assessment of the observed extreme conditions during late boreal winter 2011/2012

During late January and early February 2012 extreme winter conditions were recorded in Europe and Asia. After a mild December and early January the situation changed abruptly in the second half of January. Extreme low temperatures were recorded in east and central Asia, in Central, Western and Southern Europe. These conditions were found to be associated with large­scale atmospheric disturbances connected to the Arctic Oscillation. The cold wave finally started weakening in the first half of February.

borwinter

A case study of the boreal winter 2009/2010

During the period from December 2009 to February 2010 extreme conditions were recorded in many places. Strong negative temperature anomalies and heavy and prolonged snow conditions occurred over Europe, the Russian Federation and parts of North America, particularly the United States, and Asia. Other large areas in the northern hemisphere recorded above normal temperatures for the season. This was the case particularly in the Arctic region and Canada, where temperatures reached +6°C above the long-term average in some locations. This Assessment provides an insight into what happened.

CA_2.6


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