The World Meteorological Organization’s State of the Climate in Asia 2024 report warns that the region is warming nearly twice as fast as the global average, driving more extreme weather and posing serious threats to lives, ecosystems, and economies. In 2024, Asia experienced its warmest or second warmest year on …
The observed sea surface temperature in the Southern Ocean shows a substantial warming trend for the second half of the 20th century. Associated with the warming, there has been an enhanced atmospheric hydrological cycle in the Southern Ocean that results in an increase of the Antarctic sea ice for the …
Melvyn Thomas | TNNSurat: An impending danger is lurking in more than half-a-dozen coastal villages of Valsad. These villages are being invaded. More than half of the residents of these sleepy fishing villages have already fled away in search of safe shelters. It is not the issue of drinking water …
Using over 1.6 million profiles of salinity, potential temperature, and neutral density from historical archives and the international Argo Program, this study develops the three-dimensional field of multidecadal linear change for ocean-state properties. The period of analysis extends from 1950 to 2008, taking care to minimize the aliasing associated with …
HUMAN activities are affecting the ocean, altering its composition and damaging it bit by bit. Several researchers have documented this, but as isolated cases. Scott Doney, marine scientist at Woods Hole Oceanographic Institution in USA, recently reviewed researches in the past six years and evaluated the total impact of rising …
In the oceans, ubiquitous microscopic phototrophs (phytoplankton) account for approximately half the production of organic matter on Earth. Analyses of satellite-derived phytoplankton concentration (available since 1979) have suggested decadal-scale fluctuations linked to climate forcing, but the length of this record is insufficient to resolve longer-term trends. Here we combine available …
This guide seeks to inform conservation practice in the tropical Western Pacific, including the island states of Melanesia, Micronesia and Polynesia, as well as Indonesia, the Philippines and East Timor.
Chennai: Encouraged by the zeal witnessed at the recent world classical Tamil conference, the state government has decided to fund an undersea expedition to excavate remains of a 2,000-year-old town, Poompuhar or Kaveripoompattinam, submerged under the sea off the Nagapattinam coast in Tamil Nadu. Goa-based National Institute of Oceanography
At current rate seawater will turn acidic by century end. Human activities affect ocean dynamics. HUMAN activities are affecting the ocean, altering its composition and damaging it bit by bit. Several researchers have documented this, but as isolated cases. Scott Doney, marine scientist at Woods Hole Oceanographic Institution in USA, …
Each year, ocean sediments produce a quantity of methane equivalent to about half of the methane emitted to the atmosphere from all natural sources (1). Very little of the methane produced below the sea floor, however, reaches the ocean or the atmosphere; most is consumed by anaerobic microorganisms as it …
Recent observational surveys have shown significant oceanic bottom-water warming. However, the mechanisms causing such warming remain poorly understood, and their time scales are uncertain. Here, we report computer simulations that reveal a fast teleconnection between changes in the surface air-sea heat flux off the Ad
Global climate and the atmospheric partial pressure of carbon dioxide (pCO2atm ) are correlated over recent glacial cycles, with lower pCO2atm during ice ages, but the causes of the pCO2atm changes are unknown. The modern Southern Ocean releases deeply sequestered CO2 to the atmosphere. Growing evidence suggests that the Southern …
Global climate and the atmospheric partial pressure of carbon dioxide (pCO2atm ) are correlated over recent glacial cycles, with lower pCO2atm during ice ages, but the causes of the pCO2atm changes are unknown. The modern Southern Ocean releases deeply sequestered CO2 to the atmosphere. Growing evidence suggests that the Southern …
THE oceans are as vast and unexplored as the universe. They churn up something new everyday. The most recent discovery is a multicellular organism that can live in the darkest depths without oxygen. During the last 10 years, marine scientist Roberto Danovaro and colleagues at the Marche Polytechnic University in …
William J Broad The deep seabed was once considered a biological desert. Life, the logic went, was synonymous with light and photosynthesis. The sun powered the planet
London: In a new research into impact of melting ice on sea level, scientists have found that thinning ice in Antarctica is contributing nearly 10% of sea level rise and Pine Island Glacier is the major source. Using Autosub, an autonomous underwater vehicle, researchers led by the British Antarctic Survey …
Washington: In a novel way to fight global warming, scientists are trying how they could remove excess carbon dioxide from the atmosphere and store the gas deep under the sea bed where it can cause no trouble. Researchers at the University of Iceland are studying the possibility of sequestration of …
