Greenhouse gas concentrations in the atmosphere hit new record highs in 2022, with no end in sight to the rising trend, according to this new report by the World Meteorological Organisation (WMO). This Bulletin represents the latest analysis of observations from the WMO GAW Programme. It shows globally averaged surface …
A dust storm swept across eastern Australia and blanketed Sydney on Wednesday, disrupting transport, placing health authorities on alert for widespread respiratory illness and stripping thousands of tonnes of topsoil off Australia's main farmlands. Following are answers to questions about the storm. WHAT CAUSED THE DUST STORM? During winter in …
South Korea plans this year to unveil targeted cuts in its greenhouse gas emissions by 2020, South Korean President Lee Myung-bak said on Wednesday. Speaking at the U.N. General Assembly, Lee also said his country intends to invest about two percent of its GDP in "green growth" during the next …
The world leaders who met at the United Nations to discuss climate change on Tuesday are faced with an intricate challenge: building momentum for an international climate treaty at a time when global temperatures have been relatively stable for a decade and may even drop in the next few years. …
The Montreal Protocol on Substances that Deplete the Ozone Layer has since been recognized as an extraordinary environmental success in global cooperation to protect the ozone layer. The Montreal Protocol has completed more than 20 years of its progress. India being a Party to the Montreal Protocol and all its …
Warming decreases low-level cloud cover, contributes to its own increase WHEN the oceans warm, water evaporates and cloud cover increases. This is the well known science behind cloud formation. A new study begs to differ. Of the three major kinds
A Raman J E GEISTER MAINTAINED DETAILED RECORDS ON WEATHER CONDITIONS FOR FIVE YEARS A scientific documentation by Walford in 1879 indicates rain, frost, drought, and meteorological phenomena as the key factors for fam ines arising consequent to changed patterns in climate. Given that even in the UK, a powerful …
Mexico is suffering from its driest year in 68 years, killing crops and cattle in the countryside and forcing the government to slow the flow of water to the crowded capital. Below-average rainfall since last year has left about 80 of Mexico's 175 largest reservoirs less than half full, said …
This report addresses sea-level rise and the associated flooding of coastal regions and it s the first-of-its kind assessment incorporating the fate of the ice sheets of Greenland and West Antarctica into global sea level projections. Says that that sea-levels will very likely rise by more than one meter by …
T. Ramakrishnan CHENNAI: This July can well be regarded as the hottest July in 40 years, going by the meteorological data recorded in the two observatories
Lake ecosystem productivity, defined by the rate of biomass synthesis, is believed to be limited by nutrient availability. However, the comparison of several small unproductive lakes along a water colour gradient now shows that coloured terrestrial organic matter controls the key process for new biomass synthesis through its effects on …
At times in the past, mobile ocean fronts in the subtropics have exercised an influence on the magnitude of climate change by decoupling temperature from levels of carbon dioxide in the atmosphere.
Galactic cosmic rays could influence Earth's cloudiness by creating aerosol particles that prompt cloud formation. That possible effect looks to be smaller than thought, but the story won't end there.
Atmospheric aerosols (a mixture of solid or liquid particles suspended in the air medium) are short-lived, with a residence time of about a week in the lower troposphere. Unlike the principal greenhouse gases, aerosols are more concentrated in the source regions and exhibit strong spatial and temporal variations.
Sudha Nambudiri | ENS KOCHI: Even as several States, including Tamil Nadu and Andhra Pradesh, are planning cloud-seeding programme to induce artificial rains following the uncertainty over the arrival and intensity of monsoon, the Indian Institute of Tropical Meteorology (IITM), Pune, has already begun studies to ascertain the scientific basis …
Environmental conditions during the past 24 million years are thought to have been favourable for enhanced rates of atmospheric carbon dioxide drawdown by silicate chemical weathering. Proxy records indicate, however, that the Earth's atmospheric carbon dioxide concentrations did not fall below about 200
Levels of atmospheric carbon dioxide constrain vegetation types and thus also non-biological uptake during rock weathering. That's the reasoning used to explain why CO2 levels did not fall below a certain point in the Miocene.
