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How did Hurricane Harvey Become so Powerful, so Quickly?

By Sarah Fecht This post originally appeared on the Earth Institute’s State of the Planet. On Thursday, Harvey was a tropical storm. By the next day it was a Category 2 hurricane, and it strengthened to a Category 4 before hitting southeastern Texas on Friday night. That makes it the strongest tropical cyclone to strike the mainland United States […]

August Climate Briefing: No Niño or Niña on Horizon

Read our ENSO Essentials & Impacts pages for more about El Niño. Tony Barnston provides an overview of the briefing   What’s New Since last month’s briefing, sea-surface temperatures (SSTs) have cooled in the area of the central equatorial Pacific Ocean that define El Niño and La Niña events, called the Nino3.4 region (see first image below). The weekly SST anomalies in […]

Defining and Predicting Heat Waves in Bangladesh

New research shows that in Bangladesh, heat wave predictability exists from a few days to several weeks in advance, which could save thousands of lives. In the United States, extreme heat events have killed more people in the last 30 years than has any other weather-related phenomenon. In Europe, at least 136,835 people died due […]

Tackling Sleeping Sickness in Maasai Communities

Powerful new tool helps rural Tanzanians reduce their exposure to tsetse flies and the deadly disease they carry. Pietro Ceccato remembers his first trip three years ago to a Maasai village located a two hour’s drive south of Arusha, Tanzania. He was there with a team of public health researchers to learn more about the […]

New Model Helps in Fight Against Deadly Parasitic Disease

IRI scientists and colleagues from South Africa are using satellites to detect seasonal water bodies that harbor schistosomiasis, the deadliest of the tropical neglected diseases Cole Porter romanticized the phrase in his 1936 song, but the probable origin of having someone — or something — under one’s skin is much less pleasant to consider. An […]

July Climate Briefing: El Niño Odds Continue Downward Trend

Read our ENSO Essentials & Impacts pages for more about El Niño. What’s New Since last month’s briefing, weekly sea-surface temperature anomalies have been similar to the previous month’s temperatures, ranging from +0.5ºC to +0.7ºC in the area of the central equatorial Pacific Ocean that define El Niño and La Niña events, called the Nino3.4 region (see first image below). While […]

IRI Revela Su Nueva Generación de Pronósticos Climáticos

Read this story in English Esta primavera el IRI implementó una nueva metodología para nuestros pronósticos estacionales de temperatura y precipitación alrededor del mundo. Le pregutamos a Simon Mason, Andrew Robertson y a Tony Barnston, tres de nuestros científicos que lideran el desarrollo y calibración de los pronósticos del IRI, algunas preguntas fundamentales sobre el […]

June Climate Briefing: El Niño Odds Continue Downward Trend

Read our ENSO Essentials & Impacts pages for more about El Niño. Tony Barnston provides an overview of the briefing What’s New Since last month’s briefing, weekly sea-surface temperature anomalies have been similar to the previous month’s temperatures, ranging from +0.4ºC to +0.6ºC in the area of the central equatorial Pacific Ocean that define El Niño and La Niña events, called the […]

Malaria risk increases in Ethiopian highlands as temperatures climb

The highlands of Ethiopia are home to the majority of the country’s population, the cooler climate serving as a natural buffer against malaria transmission. New data now show that increasing temperatures over the past 35 years are eroding this buffer, allowing conditions more favorable for malaria to begin climbing into highland areas. That is the […]

IRI Unveils Its New Generation of Climate Forecasts

Leer en castellano This spring, IRI implemented a new methodology for our seasonal temperature and precipitation forecasts around the world. We asked Simon Mason, Andrew Robertson and Tony Barnston, three of our senior climate scientists who lead the development and tailoring of IRI’s forecasts, to answer some fundamental questions about the new forecast. If you […]

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