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 …
marine sciences Rare corals aplenty According to researchers from James Cook University rare coral species might not be at high risks of extinction due to small population sizes.Their tendency to hybridize saves them. The previous prediction was that small population sizes led to decreased genetic diversity, which in turn decreased …
Global warming has become such an overriding emergency that some climate experts are willing to consider schemes for partly shielding the planet from the sun's rays. But no such scheme is a magic bullet.
IMD's long range forecast for the seasonal rainfall over the country as a whole and over different homogenous regions except northwest India have been accurate. However, the seasonal rainfall over northwest India and rainfall during July for the country as a whole have not been accurate. While the prediction overestimated …
This paper briefly sketches the history of the climate negotiations, ending with the most recent agreements in Bali. The paper then turns to the scientific basis of the work on mitigation. It introduces background concepts for proposals on mitigation, which identifies not only different schools of thought but a number …
Bulk percipitation displays the combined effects of all water soluble components of precipitation. Dust from the earth's surface is commonly assumed to be alkaline; it is commonly reported in the literature as a constituent of the atmosphere and of precipitation. Alkaline and alkaline earth cations in precipitation are typically attributed …
Udhagamandalam: Under the aegis of the Public Awareness Association of Udhagamandalam, Ozone Protection Day was observed at the Municipal Elementary School here on Tuesday. Addressing the gathering, the Secretary of the Association G.Janardhanan said that efforts should be taken by the people in order to ensure that the dependence on …
Sudha Nambudiri |KOCHI: There is a reason to cheer on the International Ozone Day. The scientists have recorded a perceptible reduction in the ozone depletion levels in the atmosphere. It is generally believed that the preventive measures taken by the Inter-governmental Panel on Climate Change (IPCC) by cutting down the …
Pune, September 16 The United Nations Environment Programme (UNEP) and Pune Zilla Parishad Secondary School Section will hold a special programme to celebrate the International Day for the Preservation of Ozone Layer on Wednesday. An educational tool for creating awareness about Ozone depletion and climate change among students will be …
Rainfall decreased over two-thirds of India, says study Conventional thinking has it that India with global warming will receive more rainfall. But that need not necessarily be so. Annual rainfall, especially during winter and monsoon, has decreased in over 68 per cent of the country, claims a recent study by …
NEW DELHI Ozone layer is depleting and its effect can be felt on earth. Life on earth is bearing the effect of depleting ozone layer, caused by chemicals including chloroflurocarbons (CFCs). Every year, September 16 is observed as International Day for the preservation of the Ozone layer. Union ministry of …
Relative rates of temperature change between the troposphere and surface, and the mechanisms that produce these changes, have long been a contentious issue. Graversen et al.predicated upon the ERA-40 reanalysis, report polar tropospheric amplification of surface warming and attempt to explain this finding dynamically. (Brief Communications Arising)
To keep coral reefs from being eaten away by increasingly acidic oceans, humans need to limit the amount of climate-warming greenhouse gases in the atmosphere, a panel of marine scientists said on Wednesday. "The most logical and critical action to address the impacts of ocean acidification on coral reefs is …
The global atmospheric circulation transports energy from the equatorial regions to higher latitudes through a poleward flow of high-energy and -entropy parcels and an equatorward flow of air with lower energy and entropy content. Because of its turbulent nature, this circulation can only be described in some averaged sense. Here, …
Molecular chlorine (Cl2) is an important yet poorly understood trace constituent of the lower atmosphere. Although a number of mechanisms have been proposed for the conversion of particle-bound chloride (Cl-) to gas-phase Cl2, the detailed processes involved remain uncertain. Here, we show that reaction of dinitrogen pentoxide (N2O5) with aerosol-phase …
Last year, a private company proposed "fertilizing" parts of the ocean with iron, in hopes of encouraging carbon-absorbing blooms of plankton. Meanwhile, researchers elsewhere are talking about injecting chemicals into the atmosphere, launching sun-reflecting mirrors into stationary orbit above the earth or taking other steps to reset the thermostat of …
The ratio of stable oxygen isotopes in tree-ring cellulose was first used to reconstruct temperatures during tree growth, and a seminal study showed a strong correlation between oxygen isotopes of woody tissue and mean annual temperature.
During the growing season, with photosynthesis at its peak, leaf temperatures remain constant over a wide latitudinal range. This is a finding that overturns a common assumption and has various ramifications.
