agreement between NOAA's Climate Program Office and The Earth Institute at Columbia University. In this video, staff from the IRI, the International Federation of Red Cross/Red Crescent (IFRC), and th ...

Famine. USAID defines famine for an area as "even with any humanitarian assistance at least one in five households in the area have an extreme lack of food and other basic needs where starvation, deat ...

were far outside the range of variability that we'd expect based on historical observations. In its graphs of Arctic and Antarctic sea ice extent, NSIDC always includes a band of gray shading that sho ...

territory for an extended period, indicating that the ENSO feedback between the ocean and the atmosphere is present. The weekly Niño-3.4 index as of September 1st was about -0.3°C. This suggests that, ...

at ocean conditions during an evolving El Niño, which can then be used to help "start up" (or in scientist-speak, initialize) forecast models. However, if a historical comparison of El Niño events is ...

since those choices directly influence how fast we put heat-trapping gases into the atmosphere. In addition to uncertainty about what those choices will be, there are also details we don't yet know ab ...

circulation (see figure). When an El Niño causes excess heating in the tropical Pacific upper atmosphere, the air flow toward the poles becomes more vigorous. The change in the strength of the Hadley ...

climate conditions, see our previous post. To see what future October temperatures could be like in the U. S. if the world continues to follow a pathway with large emissions of greenhouse gases, check ...

that took place this summer to create highly detailed maps of the urban heat island effect in Washington, DC, and Baltimore, MD. According to the story…. on one of the hottest days of summer, people i ...

forecasters' confidence in the persistence of El Niño conditions is the current state of the atmosphere. As you may recall, the El Niño/Southern Oscillation (ENSO) is a coupled phenomenon that require ...