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hydrography

Storms, warm seas drove sudden drop in Antarctic ice: study

Storms, warm seas drove sudden drop in Antarctic ice: study

Unusually strong winds and warm ocean water likely drove a rapid plunge in Antarctic sea ice in recent years, scientists said on Wednesday, shedding new light on a puzzling event. While the Arctic sea ice area has been steadily declining, the story has been very different in Antarctica, where coverage

Little known battlefield near Broadus is where the Great Sioux War began

This story was originally published in 2024. You could drive right on past the site of the Battle of Powder River and not even know it. It was 148 years ago, on March 17, 1876, that members Northern Cheyenne tribe, along with a handful of Oglala Lakota, clashed with United

Study reveals where great white sharks secretly spend winters

Study reveals where great white sharks secretly spend winters

By Michael Lee Simpson A new study has revealed great white sharks secretly spend their winters in the Gulf of Mexico. Scientists tracked 92 sharks from Atlantic Canada to Florida between 2012 and 2023 and discovered more than half migrate to the Gulf during the winter months. Experts say the

Arctic sea ice among lowest on record: AFP review of US data

Arctic sea ice among lowest on record: AFP review of US data

Arctic sea ice is headed for one of its smallest winter peaks on record, an AFP review of US data showed Wednesday, as climate change shrinks the region's frozen cover and heightens geopolitical tensions. Formed when ocean water freezes, Arctic sea ice melts naturally in summer and reforms

Earth's ice is melting: where and how fast?

Earth's ice is melting: where and how fast?

Melting glaciers and ice sheets are raising sea levels while the Arctic is poised to log one of its worst winters on record. Here are some key points about the planet's ice as human-induced global warming accelerates: - Where is the Earth's ice? - Nearly all of

Antarctic sea ice improves after four years of extreme lows: US scientists

Antarctic sea ice improves after four years of extreme lows: US scientists

Antarctic sea ice coverage has likely rebounded this year, coming closer to its annual summer average after four years of extreme lows, US scientists said Monday. The area covered by Antarctic sea ice likely reached its annual minimum level at 2.58 million square kilometres (996,000 square miles) on

El Nino may return in 2026 and make planet even hotter

El Nino may return in 2026 and make planet even hotter

The warming El Nino weather phenomenon could form later this year, potentially pushing global temperatures to record heights. There is a 50- to 60-percent chance of El Nino developing during the July-September period and beyond, according to the US National Oceanic and Atmospheric Administration (NOAA). The World Meteorological