Climate models may underestimate future warming on tropical mountains

In few places are the effects of climate change more pronounced than on tropical peaks like Mount Kilimanjaro and Mount Kenya, where centuries-old glaciers have all but melted completely away. Now, new research suggests that future warming on these peaks could be even greater than climate models currently predict.

Researchers led by a Brown University geologist reconstructed temperatures over the past 25,000 years on Mount Kenya, Africa’s second-highest peak after Kilimanjaro. The work shows that as the world began rapidly warming from the last ice age around 18,000 years ago, mean annual temperatures high on the mountain increased much more quickly than in surrounding areas closer to sea level. At an elevation of 10,000 feet, mean annual temperature rose 5.5 degrees Celsius from the ice age to the pre-industrial period, the study found, compared to warming of only about 2 degrees at sea level during the same period.

NASA Studies Cosmic Radiation to Protect High-Altitude Travelers

NASA scientists studying high-altitude radiation recently published new results on the effects of cosmic radiation in our atmosphere. Their research will help improve real-time radiation monitoring for aviation industry crew and passengers working in potentially higher radiation environments. 

Imagine you’re sitting on an airplane. Cruising through the stratosphere at 36,000 feet, you’re well above the clouds and birds, and indeed, much of the atmosphere. But, despite its looks, this region is far from empty.

NASA Sees Development of Tropical Cyclone 3S along Western Australia's Coast

A NASA satellite provided a look at heavy rainfall occurring in a tropical low pressure system as it was consolidating and strengthening into what became Tropical Storm 3S in Southwest Indian Ocean.

On January 26 the Joint Typhoon Warning Center (JTWC) warned that System 90P, a low pressure area moving westward over northwestern Australia would strengthen into a tropical cyclone and by January 27 it had become Tropical Cyclone 3S.

The warm waters of the Southern Indian Ocean and low vertical wind shear are providing a good environment for tropical cyclone development.

100% renewable energy sources require overcapacity

Germany decided to go nuclear-free by 2022. A CO2-emission-free electricity supply system based on intermittent sources, such as wind and solar - or photovoltaic (PV) - power could replace nuclear power. However, these sources depend on the weather conditions.

In a new study published in EPJ Plus, Fritz Wagner from the Max Planck Institute for Plasma Physics in Germany analysed weather conditions using 2010, 2012, 2013 and 2015 data derived from the electricity supply system itself, instead of relying on meteorological data. 

Globe-trotting pollutants raise some cancer risks four times higher than predicted

A new way of looking at how pollutants ride through the atmosphere has quadrupled the estimate of global lung cancer risk from a pollutant caused by combustion, to a level that is now double the allowable limit recommended by the World Health Organization.

The findings, published this week in the Proceedings of the National Academy of Sciences Early Edition online, showed that tiny floating particles can grow semi-solid around pollutants, allowing them to last longer and travel much farther than what previous global climate models predicted.

Earth's orbital variations and sea ice synch glacial periods

Earth is currently in what climatologists call an interglacial period, a warm pulse between long, cold ice ages when glaciers dominate our planet’s higher latitudes. For the past million years, these glacial-interglacial cycles have repeated roughly on a 100,000-year cycle. Now a team of Brown University researchers has a new explanation for that timing and why the cycle was different before a million years ago.

Toxic Mercury in Aquatic Life Could Spike with Greater Land Runoff

A highly toxic form of mercury could jump by 300 to 600 percent in zooplankton – tiny animals at the base of the marine food chain – if land runoff increases by 15 to 30 percent, according to a new study.

And such an increase is possible due to climate change, according to the pioneering study by Rutgers and other scientists published today in Science Advances.

“With climate change, we expect increased precipitation in many areas in the Northern Hemisphere, leading to more runoff,” said Jeffra K. Schaefer, study coauthor and assistant research professor in Rutgers’ Department of Environmental Sciences. “That means a greater discharge of mercury and organic carbon to coastal ecosystems, which leads to higher levels of mercury in the small animals living there. These coastal regions are major feeding grounds for fish, and thus the organisms living there serve as an important source of mercury that accumulates to high levels in the fish people like to eat.” 

NYC Toddlers Exposed to Potentially Harmful Flame-Retardants

Researchers at the Columbia Center for Children’s Environmental Health (CCCEH) within the Mailman School of Public Health report evidence of potentially harmful flame-retardants on the hands and in the homes of 100 percent of a sample of New York City mothers and toddlers. The study also found that, on average, toddlers in New York City had higher levels of common flame-retardants on their hands compared to their mothers.

IKEA Canada to purchase second wind farm in Alberta

Burlington, ON – IKEA Canada has signed agreements to acquire an 88MW wind farm located near Drumheller, Alberta approximately 130km east of Calgary. Consisting of 55 turbines, the Wintering Hills wind farm will generate 275 million kWh (kilowatt hours) of energy, the equivalent to the electricity consumption of 54 IKEA stores or nearly 26,000 Canadian households.

Nordic countries are bringing about an energy transition worth copying

What can we learn from the Nordic low-carbon energy transition given the new US leadership vacuum on climate change? A new study by Professor Benjamin Sovacool at the University of Sussex offers some important lessons.

The Trump administration's "First energy plan" criticises the "burdensome" regulations on the energy industry and aims to eliminate "harmful and unnecessary policies such as the Climate Action Plan" which was introduced by President Barack Obama. It has also deleted all mentions of climate change and global warming from the White House website.