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Indian Ocean headed for a near-permanent state of marine heatwave

April 30, 2024

  • Marine heatwaves are events where ocean temperatures rise to extreme levels and hold steady for at least five days.
  • These heat waves, that occur over the ocean, are likely to extend to 220-250 days a year by 2050, warns a new study.
  • With increasing marine heat waves, cyclones can intensify, putting fisheries and people living along the coastline, at risk.

In the peak of summer, with heat waves sweeping several parts of India, seven-phase general elections are underway in the world’s biggest democracy. The weather department and the government agencies have been regularly issuing alerts and warnings, to ensure the safety of citizens who step out to cast their votes, amid fear of heat strokes and heat-related illnesses as temperatures rise and heat waves turn deadlier.

But heat waves are rising not just on land. Globally, marine heat waves are registering a growing trend. A recent study titled Future Projections for the Tropical Indian Ocean has found that the Indian Ocean is warming rapidly and moving towards a state of near-permanent marine heat waves, with 220-250 days of heat waves projected in a year until 2050.

The findings of this new research, led by Roxy Mathew Koll, scientist with Climate Research Lab, Indian Institute of Tropical Meteorology (IITM), Pune, are published in a recent book, The Indian Ocean and its Role in the Global Climate System, released on April 26.

“In the present-day climate scenario, where we are experiencing 1.2-degree Celsius warming, marine heat waves have already emerged in the Indian Ocean and are rising; at present, they range up to 20 days a year,” said Koll, talking to Mongabay India about the implications of prolonged marine heatwaves in the Indian Ocean…

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U.S. Navy Considers Setting Up Ship Base in Australia

February 10, 2015

U.S. Navy Considers Setting Up Ship Base in Australia

(Bloomberg) — The U.S. is in talks with Australia about “basing” Navy vessels in its main South Pacific ally, Chief of Naval Operations Admiral Jonathan Greenert said, a move that would risk inflaming tensions with China.

“We’re doing a study together with the Australia Defence Force to see what might be feasible for naval cooperation in and around Australia, which might include basing ships,” Admiral Greenert said during a speech Tuesday at a university in Canberra. It was unclear if Greenert was referring to permanent basing or rotational placement of ships.

U.S. is in the midst of a “pivot-to-Asia” that will see 60 percent of its naval forces deployed in the region by 2020, a response to its growing strategic importance. It’s a policy China claims is an attempt to contain its own military expansion into the South China Sea and Indian Ocean.

“Increasingly the Indian Ocean is becoming a geostrategic hot spot,” said Rosita Dellios, an associate professor of international relations at Bond University on Australia’s Gold Coast. “Africa, India, the Gulf states all share the Indian Ocean and Australia is an important player.”

China sent submarines into the India Ocean last year, with one visiting a Sri Lankan port near India’s coast in a show of power that unsettled Indian leaders. China is also promoting a “Maritime Silk Road” that would see it developing ports and infrastructure in Indian Ocean countries including Sri Lanka, Bangladesh, the Maldives and Pakistan.

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