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Climate Monitoring Products

Measured Precipitation across the USA

Global Precipitation Anomalies 2010

The Earth’s climate shows great variability over different time scales, from seasons to decades to thousands of years and more. These variations and potential changes can have serious affects on human health, security and safety. The only way to know these changes are occurring and attempt to know what is driving these changes, is to keep accurate, long-term records of the atmosphere and other climate indicators (e.g. global mean Earth surface temperature and precipitation).

By carefully monitoring the climate, the effects of extreme events can be lessoned and prepared fore.g. the development of severe storms can be tracked and t heir movements predicted. Close and meticulous monitoring also allows for the detection of climate change, its driving forces  as well as its impacts around the world.

Monitoring the global climate also helps with regional or national weather predictions. Local conditions do not occur in isolation to the rest of the world, and the status of the regional and global climate directly influences local weather.

WMO provides several products and services on Climate Monitoring:

Global Monitoring Products

WMO Statement on the Status of the Global Climate

Since 1993, the WMO has issued annual statements on the status of the global climate to provide credible scientific information on the climate and its variability. The statement describes climatic conditions, including extreme weather events and provides a historical perspective on the variability and trends that have occurred since the nineteenth century.

[Further information] The annual statement on the status of the global climate can be found on the World Climate Data and Monitoring Website.

[Further information] on the Status of the Global climate can be found in the Status of the Global Climate page of this website.

El Niño Southern Oscillation (ENSO) Updates

The WMO produces an El Niño/La Niña update on a quasi-regular basis (approximately once in three months) through a collaborative effort between WMO and the International Research Institute for Climate and Society (IRI). Monitoring the status of the El Niño/La Niña  phenomenon is particularly important given it’s impact on global climate conditions.

[More in depth information] The most recent WMO El Niño/La Niña Update can be found here.

[Further information] There is also an archive of past updates.

[Further information] on the El Niño/La Niña phenomenon can be found in the climate prediction and outlook pages of this website.

Global Atmospheric Constituent Bulletins

Greenhouse Gases

The WMO Global Atmosphere Watch (GAW) programme promotes systematic and reliable observations of the global atmospheric environment. The data are collected and distributed by the World Data Centre for Greenhouse Gases (WDCGG) at the Japan Meteorological Agency. The GAW issues the annual Greenhouse Gas Bulletin, which reports on the latest trends and atmospheric burdens of the most influential, long-lived greenhouse gases, carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O), as well as a summary of the contributions of the lesser gases.

[Further information] about the GAW project and the GHG bulletin can be found at the Atmospheric Research and Environment Programme (AREP) website.


The GAW also monitors the concentration of Ozone in the atmosphere which has various positive and negative aspects. The WMO publishes annual Antarctic and Arctic Ozone Bulletins on the status of the Ozone layer in these locations. The bulletins are based on data provided by WMO Members that operate atmospheric monitoring stations in the Arctic and satellites to observe ozone and related parameters globally.

[Further information] about GAW Research on Stratospheric Ozone can be found here.

[Further information] More examples of global climate monitoring products can be found here.

Regional Monitoring Products

Climate Watches

Growing economic losses, coupled with an increase in deaths caused by extreme climate and weather events, have drawn the attention of governments, the scientific community and the public at large. The climate watch system provides advisories and statements to inform and alert users, particularly those involved in natural hazards preparedness, mitigation and response, about evolving or foreseen climate anomalies and extremes at the regional and national levels, thus allowing them to make informed decisions.

[Further information] on the Climate Watch system can be found on the World Data and Monitoring Programme website.

[Further information] about what is involved in a Climate Watch System can be found in the Climate Watch System brochure.

Climate Monitoring Products from WMO Regional Climate Centres

Regional monitoring is amongst the mandatory functions of WMO Regional Climate Centres. These are Centres of Excellence that assist WMO Members in a given region to deliver better climate services and products including climate data services, monitoring products and long-range forecasts, and to strengthen their capacity to meet national climate information needs.

[More in depth information] The WMO Regional Climate Centres for Asia havea website where more information about their work and products can be found.

[More in depth information] The WMO Regional Climate Centre Network for Europe is just being established. You can find more  information about that network here.

[Further information] about the WMO Regional Climate Centres can be found here on the Climate Applications and Services Website.

National Monitoring Products

National climate monitoring is usually a key responsibility of the National Meteorological and Hydrological Service (NMHS).  Most HMHSs continuously monitor the national climate to help with forecasting and predictions.

[Further information] WMO keeps a list of all the websites of member country NMHSs. The list can be found on the members page of the WMO website.

[Further information] More information on national monitoring products can be found on the WMOs Climate Data and Monitoring website.



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