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Bulletin nº

Water impacts our daily lives directly or indirectly through its use for domestic and drinking purposes, agriculture, industry, hydropower, navigation, recreation, ecosystem management and much more.

Bulletin nº

Scientific evidence of climate change is unequivocal. Human-induced climate change is already affecting every region of the Earth, with many experiencing more frequent weather and climate extremes. This conclusion was reached by the Intergovernmental Panel on Climate Change (IPCC), Working Group I (WGI) in its Sixth Assessment report (AR6, IPCC, 2021) by drawing upon a variety of datasets and reanalysis derived from climate observations (Figure 1).

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Bulletin nº

Climate change is increasing the frequency, intensity, spatial extent, duration and timing of adverse weather and climate events in all areas of the world. Interconnected and globally-networked energy, water, health, trade and finance sectors, along with technological interdependencies and the daily lives of people living in poverty are expanding vulnerabilities to unfamiliar and unprecedented levels. Interactions and impacts propagate across communities, the economy and then beyond administrative or national borders....

Bulletin nº

The impacts of severe hydrometeorological events are not gender neutral. Gender, along with class, race, age and other intersecting social identities, contributes to shaping the roles, power and resources available to women, men and non-binary in any culture, including the resources necessary for resilience. Women, for example, are often directly responsible for the care of children, sick or older family members and are thus less likely to be able or...

Bulletin nº

Artificial intelligence (AI), in particular machine learning (ML), is playing an increasingly important role in disaster risk reduction (DRR) – from the forecasting of extreme events and the development of hazard maps to the detection of events in real time, the provision of situational awareness and decision support, and beyond. This raises several questions: What opportunities does AI present? What are the challenges? How can we address the challenges and...

Bulletin nº

Dear Colleagues,

It is my pleasure to present this issue of the WMO Bulletin as a complement to the theme of World Meteorological Day “Early Warning and Early Action Hydrometeorological and Climate Information for Disaster Risk Reduction”.

The Bulletin focusses on “Early warning and anticipatory action” with articles on harnessing technology and services, risk to resilience, the Global Multi-hazard Alert System, the WMO-UNDRR Centre of Excellence and on gender equality...

Bulletin nº

Hazards can be natural or technological (or man-made), and multi-hazard conditions are common. When hazards cascade, they can lead to a large-scale disaster. For example, a severe rainstorm can cause flooding, which may contaminate water sources, which in turn may precipitate a cholera outbreak. Disaster risk can be viewed as a function of multiple factors, including hazard, exposure, vulnerability and capacity building. To mitigate risks and avoid hazards cascading into...

Bulletin nº

This summary is based on the Intergovernmental Panel on Climate Change (IPCC) Working Group 1 contribution to the 6th Assessment Report (AR6): “Climate Change 2021: The Physical Science Basis.” Around 1/3 of the report is dedicated to regional climate information, with an assessment of observed and projected changes in climatic impact-drivers which are physical climate system conditions (e.g., means, events, extremes) that affect an element of society or ecosystems. This...

Bulletin nº
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 Météo-France RSMC La Reunion.pngFigure 1. Track and intensity of Tropical Cyclone Idai, 4–16 March 2019: Idai tracked back and forth from Mozambique to Malawi to Mozambique then out to sea then back to Mozambique then Zimbabwe.  (Source: Météo-France /RSMC La Reunion)
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Bulletin nº

National Meteorological and Hydrological Services (NMHS) have a critical role to play as humanity faces growing risks from weather and climate extremes (IPCC 2021). Climate and weather information and early warning systems enable timely and effective decision-making to protect lives and livelihoods, supporting global efforts to reduce poverty and promote shared prosperity (WMO et al 2015).