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 study claims the maximum temperature over the northwestern Himalayas is increasing at a much faster rate than the minimum temperature. Another study claims it is just the opposite for most of the northern hemisphere, where the minimum temperature is rising faster than the maximum temperature. Change in temperature affects …
The concept of an interannually varying Indian summer monsoon season is introduced here, considering that the duration of the primary driving of the Indian monsoon - the large-scale meridional gradient of the deep tropospheric heat source - may vary from one year to another. Onset (withdrawal) is defined as the …
Paul J Crutzen received the 1995 Chemistry Nobel prize for showing that nitrogen oxides react catalytically with ozone, thus accelerating the rate of reduction of the atmospheric ozone content. His findings have triggered off much research on biogeochemical cycles like the carbon and nitrogen cycle. But he tells Archita Bhatta …
Cannibalising offspring A study reveals that male fish are more likely to eat their offspring when they have been cuckolded during spawning. Moreover, the more males that are present during spawning, the more likely it is that a male will try to eat the eggs when they are laid. "The …
"Climate Change 2007 - The Physical Science Basis" is the most comprehensive and up-to-date scientific assessment of past, present and future climate change. The report provides: the most complete and quantitative assessment of how human activities are affecting the radiative energy balance in the atmosphere; a more extensive assessment of …
The conference of parties to the un climate convention in Nairobi went along predictable lines. In the 12 years of the convention, political rhetoric may not have changed much
weather forecasters will now need to track atmospheric dust to predict hurricanes. Dust may dampen hurricane fury, say scientists at the University of Wisconsin-Madison, studying a link between Atlantic hurricanes and thick clouds of dust that periodically rise from the Sahara Desert and blow off Africa's western coast. A strong …
India witnesses hotter summers, shorter winters. Shape of things to come? Carbon dioxide accumulating in the atmosphere is held as one of the primary reasons for glaciers melting but it could also be wreaking havoc with the climate. The projected rate of warming is much higher than the observed changes …
rapid atmospheric warming is causing a widening of the tropical region, according to a team of researchers led by the University of Washington in the us . The scientists analysed satellite data from 1979 to 2005 on temperature over subtropical areas (between 23.5
the European Space Agency (esa) has come out with a world fire atlas based on satellite data on forest fires collected over a decade. The maps are available to users online in near-real time (within six hours of a fire). The data was taken from instruments called Along Track Scanning …
The us has perpetually been in denial about global warming, especially after the Earth Summit in Rio De Janerio held in 1992, but a recent report released by the us Climate Change Science Program (ccsp) may shake it out of its complacency. The report adds ammunition for lobbies within the …
india has set up a new Earth Commission and renamed its Union ministry of ocean development the Union ministry of earth sciences. The move is important since it is seen as the the first step of the Indian government to integrate all researches on land, ocean and atmoaspheric systems. "The …
Scientists from 10 countries are conducting an experiment to demystify the life cycle of tropical clouds. Under the experiment, 1,000 weather balloons have been released over the past two months in Australia's northern city of Darwin to study cirrus, the wispy white clouds found at high altitudes. "Cirrus are ubiquitous …
scientists at the us National Center for Atmospheric Research (ncar) have begun an experiment to evaluate cloud seeding, a precipitation enhancement technique mired in controversy. The five-year, us $8.8 million project will be carried out in Wyoming, which has been experiencing drought for years in a row, according to ncar …
Why has the Asian Brown Cloud now become the Atmospheric Brown Cloud? Brown clouds have been seen all over the world, including the us , Europe, India and China. Earlier, our focus was on South Asia; so we called these clouds the Asian Brown Cloud. Several Indian scientists and politicians …
Being an integral effect of sub-seasonal rain spells over the season, the seasonal mean south Asian monsoon (SAM) rainfall could be affected by change in the length of the rainy season (LRS). An objective definition of the duration of the SAM season has, however, been lacking. Here we show that …
the capacities of the land and oceans to act as repositories for anthropogenic carbon dioxide (co2) may be limited if we maintain or accelerate our current course of fossil fuel emissions, according to a us study. Using a new generation computer carbon-climate model, the study conducted at Berkeley University shows …
The southwest monsoon current in the form of a crossequatorial low level jetstream (LLJ) with its core at an altitude of about 1.5 km and core wind speeds of 80
