All articles tagged with #climate variability
Originally Published 22 days ago — by ScienceAlert
Scientists using 20 years of satellite data have discovered that Earth's seasons are often out of sync across different regions, even neighboring areas, which has significant implications for ecology, evolution, and climate models, highlighting the planet's complex and diverse seasonal patterns.
Originally Published 2 years ago — by SciTechDaily
A study by the University of Miami has found that human-induced aerosol emissions are a major driver of temperature fluctuations in the tropical Atlantic Ocean, which in turn impact rainfall in West Africa's Sahel region and the formation of Atlantic hurricanes. The researchers used a grand ensemble simulation technique to demonstrate the climate changes resulting from external forcings, revealing that historical reductions in aerosol emissions led to increased hurricane activity and Sahel rainfall. The study suggests that ongoing reductions in aerosol emissions, combined with greenhouse gas-induced warming, will likely prevent a return to a quieter period of hurricane activity in the Atlantic in the coming decades.
Originally Published 2 years ago — by The Washington Post
A new study published in the journal Science warns that the global economy could face trillions of dollars in losses due to the intensifying El Niño events, which could be more frequent and stronger due to climate change. The study found that the most intense El Niño events cost the global economy more than $4tn over the following years, and the authors project that global economic losses could amount to $84tn by the end of the 21st century, even if current pledges to reduce carbon emissions are met. The impact will most burden lower-income nations, and the forecasters at the National Oceanic and Atmospheric Administration are anticipating a strong El Niño event later in 2023.
Originally Published 2 years ago — by Nature.com
A new study suggests that Heinrich-type climate variability, characterized by massive detritus layers in the North Atlantic, may have a bipolar impact and phasing, affecting both hemispheres simultaneously. The study analyzed ice core records from Greenland and Antarctica and found evidence of synchronized warming and cooling events during Heinrich stadials. The findings challenge the traditional view of the bipolar seesaw, which suggests that climate changes in one hemisphere are offset by opposite changes in the other hemisphere.
Originally Published 2 years ago — by SciTechDaily
Sea levels along the U.S. Southeast and Gulf coasts have rapidly accelerated over the past 12 years, reaching record-breaking rates of about half an inch per year since 2010, according to a new study led by scientists at Tulane University. The acceleration is attributed to the compounding effects of man-made climate change and natural climate variability, affecting the entire Subtropical Gyre area. Although rates will likely return to more moderate values in the coming decades, the study highlights the urgency of addressing climate change to protect vulnerable coastlines.