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 …
The latest CSE analysis finds that Delhi is witnessing an unprecedented ozone build-up. Ozone levels have exceeded the standards proposed by MoEF almost everyday in April. It recommends notification of the proposed air quality standards without any further delay to implement control strategies for ozone-forming gases. In April, ozone levels …
Permafrost thaw and microbial decomposition is considered one of the most likely positive climate feedbacks from terrestrial ecosystems to the atmosphere in a warmer world, but the rate of carbon release from permafrost soil remains highly uncertain. Here, net ecosystem carbon exchange is measured in a tundra landscape undergoing permafrost …
Surinder Sud / New Delhi May 21, 2009, 0:29 IST The monsoon has set in over the entire Andaman Sea and part of south Bay of Bengal, the first entry point to Indian territorial waters, right on schedule today. It is likely to advance towards the Indian mainland and hit …
If rising levels of greenhouse gases aren't pushing up global temperatures, as contrarians argue, what else could be? The leading alternative has been a fickle sun, and the sun's most likely--or most heavily promoted--agent of change has been cosmic rays. Now scientists have published the first comprehensive modeling of how …
Global climate change is occurring at an accelerating pace, and the global greenhouse gas (GHG) emissions that are forcing climate change continue to increase. Given the present pace of international actions, it seems unlikely that atmospheric composition can be stabilized at a level that will avoid "dangerous anthropogenic interference" with …
This report addresses some of the major questions facing climate change researchers, and how those puzzles are being addressed by NSF-funded activities. Complex computer models are being developed and refined to predict Earth
Mumbai Doppler radar in city but may not be ready before July 24 when highest tide is expected Four years after the worst ever deluge that submerged Mumbai, the city
This paper analyses the terrestrial carbon balance of China during the 1980s and 1990s using biomass and soil carbon inventories extrapolated by satellite greenness measurements, ecosystem models and atmospheric inversions. These three methods produce similar estimates of a net sink of 0.19
In China, as in other nations that produce carbon dioxide from fossil fuels on a large scale, the terrestrial biosphere mops up a proportion of the emissions. Estimates of the amounts involved are now available.
Deforestation in Brazil's huge Amazonas state could fall to zero by 2020 if a global climate summit in Copenhagen in December adopts measures to put an economic value on preserving forests, its governor said on Thursday. Eduardo Braga's state government has pioneered the preservation of the Amazon by granting financial …
India's monsoon rains, vital for the farm-dependent economy and the success of major crops, may exceed the norm this year if the El Nino system that brings drier weather fails to appear, as expected, forecasters say. That would be good news for a country hit by the global recession, ensuring …
Fresh data confirming accelerated warming over western Himalayas just ahead of the onset of the Indian monsoon year after year could have important implications for the monsoon as well as the Himalayan glaciers, experts say. The temperature of air over western Himalayas had been showing an increasing trend during the …
Long-term data on hourly wind speed from 70 meteorological centres of India Meteorological Department have been collected. The daily gust wind data have been processed for annual maximum wind speed (in kmph) for each site. Using the Gumbel probability paper approach the extreme value quantiles have been derived. A design …
A decrease in atmospheric methane levels might have triggered the progressive rise of atmospheric oxygen about 2.4 billion years ago, but the cause of this methane decrease remains uncertain. Kurt Konhauser and colleagues report a decline in the oceanic nickel-to-iron ratio about 2.7 billion years ago, which they attribute to …
Tricobalt tetraoxide (Co3O4) is a potential catalyst for low-temperature oxidation of carbon monoxide (required in automotive emission control) but although it is active even at subzero temperatures, it is highly sensitive to moisture. By forming Co3O4 into nanorods, Xiaowei Xie and colleagues make it more active and also stable in …
Fundamental to the onset of the Indian Summer Monsoon is the land-sea thermal gradient from the Indian Ocean to the Himalayas-Tibetan Plateau (HTP). The timing of the onset is strongly controlled by the meridional tropospheric temperature gradient due to the rapid pre-monsoon heating of the HTP compared to the relatively …
