ARC-SAHEL TCHAD

ARC-SAHEL TCHAD ONG Humanitaire

02/06/2026

Climate adaptation means helping communities adjust to a changing climate by protecting lives, livelihoods, and nature while building new opportunities for growth.

Browse UN Environment Programme’s new Report for the latest progress: https://unep.org/resources/adaptation-gap-report-2025

Les phénomènes météorologiques extrêmes sont les preuves du changement climatique
02/06/2026

Les phénomènes météorologiques extrêmes sont les preuves du changement climatique

Prepare for an El Niño.

WMO’s latest updates confirm that El Niño conditions are developing and are set to influence global temperature and rainfall patterns, increasing the risk of extreme weather over the coming months. Although some uncertainty remains about El Niño peak strength and timing, most forecast models suggest it will be at least moderate—and possibly strong.

𝐖𝐡𝐚𝐭 𝐜𝐚𝐧 𝐰𝐞 𝐞𝐱𝐩𝐞𝐜𝐭?

Each El Niño event is unique, but it is typically associated with increased rainfall in parts of southern South America, the southern United States, parts of the Horn of Africa and central Asia, and drier conditions over Central America, northern South America, the Caribbean, Australia, Indonesia, and parts of southern Asia. During the Boreal summer, El Niño’s warm water can fuel hurricanes in the central/eastern Pacific Ocean, while it hinders hurricane formation in the Atlantic Basin.

Its effects vary depending on the intensity, duration, time of year, and how it interacts with other climate variability. Not all regions of the world are affected, and even within a region, impacts can be different.

The WMO community will continue monitoring conditions in the coming months.

Advance seasonal forecasts and are vital to save lives and cushion the impact on our economies and our communities.

Everything you need to know about the emerging El Niño—link in the comments 👇

Les prévisions météorologiques sont des stratégies d'anticipation aux risques climatiques et un facteur de resilience
18/08/2025

Les prévisions météorologiques sont des stratégies d'anticipation aux risques climatiques et un facteur de resilience

🌦️ We all take weather forecasts for granted. But how does this information get to your mobile phone?

In a nutshell, it's thanks to the World Meteorological Organization's incredible global observing network!

✅ Weather balloons are launched simultaneously at more than 1,000 locations around the globe, including Antarctica

✅ Surface observations – temperature, humidity, pressure, rainfall and wind – from automatic weather stations and human observers, are also simultaneously recorded and transmitted.

✅ Drifting buoys and ships provide measurements at the surface of the ocean, and aircraft, during take-off and landing, provide measurements of wind and temperature.

✅ A global fleet of satellites provide continuous, real-time observation of a range of meteorological and climate variables.

This fascinating article in the WMO Bulletin by Anthony Rea shows how WMO systems have global and national benefits.

https://bit.ly/3J8L81p

21/07/2025
21/07/2025

The Second Lead Author Meeting for IPCC’s Special Report on Climate Change and Cities kicks off today in Mombasa, Kenya.

Nearly 100 authors from over 50 countries will meet from 21 to 25 July, to work on the first draft of the report. Scheduled for release in March 2027, this will be the first report and the only IPCC special report published in the current cycle.

🔗 http://bit.ly/3IBY5Rj

21/07/2025

La préparations aux risques des catastrophes est un facteur de mitigation et de resilience aux risques climatiques

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19/01/2025

💥💥💥💥

The next round of national plans are an opportunity for countries to act for a greener future.

We echo United Nations Secretary-General Antonio Guterres in calling on leaders to follow through on their commitments to step up and meet the challenge of this crisis.

https://www.un.org/en/climatechange/all-about-ndcs

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