Atlantic

Cross-plot of planktic MCA-LIA change point versus site latitude. Earlier LIA cooling at planktic records may imply earlier cooling at the northern than southern sites. Credit: Science (2023). DOI: 10.1126/science.adf1646 Heat transferring from the surface to the deep ocean in the North Atlantic helped reduce climate swings during the last 1,000 years, according to a newly published paper led by researchers from the Woods Hole…

A major ocean current system in the Atlantic could be about to collapse as soon as 2025, concerning new peer-reviewed research suggests.This is particularly concerning in light of the current heat extremes we're witnessing across the globe, including a massive departure from previous records in the Atlantic Ocean itself."Here we calculate when the early warning signs are significantly above the natural variations," write physicist Peter Ditlevsen and statistician Susanne Ditlevsen from the University of Copenhagen."Given…

Credit: Pixabay/CC0 Public Domain Important ocean currents that redistribute heat, cold and precipitation between the tropics and the northernmost parts of the Atlantic region will shut down around the year 2060 if current greenhouse gas emissions persist. This is the conclusion based on new calculations from the University of Copenhagen that contradict the latest report from the IPCC.…

The Hurricane Analysis and Forecast System (HAFS) "moving nest" Model. Global map showcasing land mass in green and water in black, clouds in white and tropical storms outlined in a green boxes representing the moving nest model. Credit: NOAA NOAA's National Hurricane Center—a division of the National Weather Service—has a new model to help produce hurricane forecasts this season. The Hurricane Analysis and Forecast System…

The C and A denote cyclonic low-pressure and anticyclonic high-pressure circulation anomalies, respectively, induced by warmer NTA. MOD13A1 monthly mean enhanced vegetation index (EVI, shaded from brown to green) and North Tropical Atlantic SST anomaly (shaded from blue to red) in 2018. Credit: Science China Press A research group led by Associate Professor Jing Li from the School of Physics at Peking University published an…

Figure 1. The Gulf Stream thermal front leads to excessive ocean latent heat release primarily due to higher surface wind speed and sharper air-sea humidity contrast over its warm flank. The cumulative extensive latent heat loss favors the deepening of mixed layer, which gives rise to enlargement in the outcropping of corresponding isopycnals, leading to considerable transformation of lighter water masses into STMW. Credit: ©Science China Press…

Usually by this time of year, sea surface temperatures—as a global average—drop dramatically. The southern hemisphere has much more water than the northern hemisphere, and it’s now winter there. Yet this year the average remains anomalously high.Yes, the oceans have been getting hotter because of climate change. But something else is going on in the North Atlantic, McNoldy thinks. “What we're seeing in 2023 is just so far out of range of what's ever happened,” he says. “It's not simply a climate change thing. Other recent…

Ocean temperatures in Atlantic Canada set record highs again in 2022, according to the latest assessment released by the federal Department of Fisheries and Oceans.Results from the annual Atlantic Zone Monitoring Program show surface, intermediate and bottom temperatures were well above normal last year."It was widespread. It was everywhere," said Peter Galbraith, a DFO research scientist in Mont-Joli, Que. "It was really, really warm across the zone."Fisheries and Oceans uses 45 indices — a combination of multiple…

Tropical storm Cindy has formed behind tropical storm Bret, in the first case of two storms in the tropical Atlantic in June since record keeping began, forecasters said Friday.The historic event signals an early and aggressive start to the Atlantic hurricane season that began June 1 and whose peak usually runs from mid-August to mid-October. Forecasters blamed unusually high sea temperatures for the rare development.The U.S. National Oceanic and Atmospheric Administration in Miami has forecast 12 to 17 named storms for…

CLIMATEWIRE | This year’s hurricane season is already breaking records less than a month in. Atlantic temperatures are abnormally warm, and tropical storms are emerging in waters that don’t typically produce them until at least August. Tropical Storm Bret, the season’s third named storm, formed in the Central Atlantic on Monday after first emerging from a tropical wave off Africa's western coast. It’s the farthest east a tropical storm has formed in the Atlantic this early in the season, according to hurricane expert…