Arus samudra Atlantik melemah selama dua dekade, menurut penelitian

Minggu, 10 Mei 2026

Dilaporkan oleh AI

Sistem arus Samudra Atlantik utama yang mengatur iklim global telah melambat selama hampir 20 tahun. Penelitian baru memberikan bukti langsung mengenai penurunan tersebut di wilayah yang luas di Atlantik Utara.

Para ilmuwan di University of Miami Rosenstiel School of Marine, Atmospheric and Earth Science memimpin penelitian ini. Mereka menganalisis data dari empat rangkaian pemantau dasar laut yang membentang dari daerah tropis hingga garis lintang menengah. Instrumen tersebut mengukur tekanan, suhu, dan arus untuk melacak aliran laut dalam di bawah 1.000 meter.

Artikel Terkait

Gulf Stream shifts northward amid AMOC weakening concerns

A new modelling study indicates that a weakening Atlantic Meridional Overturning Circulation is causing the Gulf Stream to drift northwards, with satellite data showing a 50-kilometre shift over 30 years. Researchers suggest this gradual change could precede an abrupt move serving as an early warning for a potential AMOC collapse. Such a collapse might lead to drastic cooling in Europe, though timelines remain uncertain.

Warmer ocean drives Antarctic sea ice regime shift

Senin, 23 Maret 2026 Dilaporkan oleh AI

New studies indicate that stronger winds and warming deep ocean water have triggered a sharp decline in Antarctic sea ice since 2016. Previously expanding, the ice reached a record high in 2014 before plummeting to record lows. Researchers link this shift to wind-driven upwelling of circumpolar deep water.

Ilmu Pengetahuan

Sea levels worldwide underestimated due to research oversight

Ilmu Pengetahuan

Study finds hidden channels speed Antarctic ice melt

Ilmu Pengetahuan

Ocean temperatures limit spread of global droughts, study shows

South Atlantic Anomaly expands dramatically since 2014

New data from the European Space Agency's Swarm satellites reveal that the South Atlantic Anomaly, a weak spot in Earth's magnetic field, has grown by nearly half the size of continental Europe since 2014. A region southwest of Africa is weakening even faster in recent years. This expansion highlights unusual activity in Earth's molten outer core.

Space lasers reveal accelerating global sea level rise

Selasa, 24 Februari 2026 Dilaporkan oleh AI

Researchers at The Hong Kong Polytechnic University have analyzed 30 years of data to show that global sea levels have risen by about 90 millimeters since 1993, with melting land ice now driving most of the increase. The study, using satellite laser ranging, indicates an average rise of 3.3 millimeters per year, a rate that is speeding up. Ocean mass from ice melt accounts for over 60 percent of the rise since 2005.

Lingkungan