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 …
Calcutta, March 24: Climate change has erased the source of a three-decades-old Indo-Bangladesh dispute. Both countries have over the years claimed that New Moore Island, known as Purbasha in India and South Talpatti Island in Bangladesh, is their territory. Now, global warming and a consequent rise in the sea level …
Kolkata: The New Moore island in the Bay of Bengal is being swallowed by the rising sea, making it one of the earliest instances of a patch of territory ceasing to exist because of global warming. New Moore Island, also known as Purbasha island, is at the confluence of Ichhamati …
Once a flashpoint in Indo-Bangla ties, the New Moore island or Purbasha in the Bay of Bengal, which Dhaka called the South Talpatti, has ceased to exist, consumed by hungry tides and the rising sea. This was announced on Monday by the School of Oceanographic Studies, Jadavpur University after it …
Microbes aside, upward of nine in 10 species crowd into the 30% of Earth's surface that's dry. It wasn't always that way, say a pair of researchers at the University of California (UC), Davis, who have been studying land and ocean features to understand how evolution proceeds in these two …
Remobilization to the atmosphere of only a small fraction of the methane held in East Siberian Arctic Shelf (ESAS) sediments could trigger abrupt climate warming, yet it is believed that sub-sea permafrost acts as a lid to keep this shallow methane reservoir in place. Here, we show that more than …
Reconstructing sea-level changes during the last deglaciation provides a way of understanding the ice dynamics that can perturb large continental ice sheets. The resolution of the few sea-level records covering the critical time interval between 14,000 and 9,000 calendar years before the present is still insufficient to draw conclusions about …
Can we trust the Ocean-Atmosphere coupled models to predict future climate accurately?: a paper presented by Prof. J Srinivasan IISc, Bangalore at National climate research conference, IIT Delhi, March 5-6, 2010.
This document contains the presentation by D. V. Borole, NIO Goa, on dynamics of trace gases at low level planetary boundary layer observed at Cabo de Rama, west coast of India, presented at National climate research conference, IIT Delhi, March 5-6, 2010. Atmospheric gases are considered to modulate the global …
Developing countries could in future earn money from reducing carbon emissions by protecting oceans and marine ecosystems, a top UN official said on Thursday. Sea grasses, mangroves and salt marshes naturally store huge amounts of carbon but this is released as greenhouse gases, such as carbon dioxide, when wetlands are …
The chemical composition of the ocean is determined by rivers, submarine hot springs, and ocean sediments that add or remove elements to seawater. Throughout the oceans, the more abundant elements have near constant ratios to salinity (a measure of total dissolved salts). Thus, records of their past concentrations in sea-water …
Proxies for past seawater chemistry, such as Mg/Ca and Sr/Caratios, provide a record of the dynamic exchanges of elementsbetween the solid Earth, the atmosphere, and the hydrosphereand the evolving influence of life. We estimated past oceanicMg/Ca and Sr/Ca ratios from suites of 1.6- to 170-million-year-oldcalcium carbonate veins that had precipitated …
Divya Gandhi Bangalore: Plankton prairies, that generate much of the oxygen we breathe, the Great Pacific Garbage Patch, where currents have deposited the world
Water masses can become undersaturated with oxygen when natural processes alone or in combination with anthropogenic processes produce enough organic carbon that is aerobically decomposed faster than the rate of oxygen reaeration. The dominant natural processes usually involved are photosynthetic carbon production and microbial respiration. The re-supply rate is indirectly …
The Southern Ocean is potentially a substantial sink of anthropogenic carbon dioxide; however, the regulation of this carbon sink by the wind-driven Ekman flow, mesoscale eddies and their interaction is under debate. Here, a high-resolution ocean circulation and carbon cycle model is used to study intra-annual variability in anthropogenic carbon …
The knowledge of traditional medicines from marine resources shows that very little information has been preserved or recorded so far. We do not know how much information still exists.
Understanding changes in ocean circulation during the last deglaciationis crucial to unraveling the dynamics of glacial-interglacialand millennial climate shifts. We used neodymium isotope measurementson postdepositional iron-manganese oxide coatings precipitatedon planktonic foraminifera to reconstruct changes in the bottomwater source of the deep western North Atlantic at the BermudaRise. Comparison of our …
