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Research Headlines

FREETOWN HEAT ISLAND CAMPAIGN In January 2023, Yvonne Aki-Sawyerr, mayor of Freetown, Sierra Leone, shared information about heat health issues facing Freetown residents and the work being done to address these challenges. Courtesy of Eric Hubbard

Lessons from heat mapping in two tropical cities

For the last seven years, NOAA has supported more than 70 U.S. communities in projects to help citizens map the hottest neighborhoods of their community. Earlier this year, NOAA branched into the wider world to support heat island mapping campaigns overseas. 

Moored buoy collecting atmospheric and oceanic data in the tropical pacific to improve our understanding of climate and weather. Credit: NOAA PMEL

Global ocean observing for Earth Day

To better care for our Earth and mitigate the effects of climate change, we must first look to the ocean. This Earth Day, we invite you to learn more about NOAA’s contributions to the global ocean observing system.

Greenhouse gases continued to increase rapidly in 2022

Levels of carbon dioxide (CO2), methane and nitrous oxide, the three greenhouse gases emitted by human activity that are the most significant contributors to climate change, continued their historically high rates of growth in the atmosphere during 2022, according to NOAA scientists. 

Sargassum mat seen in the Atlantic Ocean during a GO-SHIP research cruise in March 2023.

NOAA’s Sargassum FAQ

A commonly found floating algae known as “Sargassum” has inundated the coastlines of the tropical Atlantic and Caribbean since 2011. These alga float at the sea surface, where they can aggregate to form large mats in the open ocean.  A 2020 study led by researchers at AOML shows how Sargassum entered and flourished in the tropical Atlantic and Caribbean. A tool based on that research, known as the Sargassum Inundation Report (SIR) has been developed to help managers deal with these periodic inundations.

First NOAA GO-SHIP Cruise In 5 Years Departs To Study Unique Atlantic Basin

On March 6, a team of scientists on the NOAA Ship Ronald H. Brown departed from Suape, Brazil for a 55-day cruise to the northerly waters of Reykjavik, Iceland. With 150 planned stops along this cruise track known as A16N, measurements of heat, freshwater, carbon, oxygen, and nutrients will be taken from the ocean’s surface to the seafloor, sometimes reaching depths greater than 5,000 meters (3.1 miles)! 

Severe storm research campaign kicks off second year of data gathering

This winter has brought multiple rounds of devastating severe weather to the southeastern U.S., with more than 200 reported tornadoes and 14 fatalities. To better understand the deadly storms in this region, scientists will conduct research as they travel through seven states in the second year of one of the largest and most comprehensive severe storm field projects to date.

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