Atmosphere

Greenhouse Gas bulletin: the state of greenhouse gases in the atmosphere based on global observations through 2022

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 …

Project Varsha may be brought out of cold storage

The Maharashtra government is considering implementing a cloud seeding programme to boost rainfall this season. Though the monsoon is showing signs of revival, the state agricultural department is gearing up for the worst. Project Varsha, as the programme is called, was first mooted in 2005 and had since been lying …

Atmospheric carbon dioxide concentration across the Mid-Pleistocene transition

The dominant period of Pleistocene glacial cycles changed during the mid-Pleistocene from 40,000 years to 100,000 years, for as yet unknown reasons. Here we present a 2.1-million-year record of sea surface partial pressure of CO2 (PCO2), based on boron isotopes in planktic foraminifer shells, which suggests that the atmospheric partial …

Monsoon likely to be delayed

New Delhi: Temperatures are expected to soar over the next few days in Delhi and other parts of the country with the movement of monsoon clouds towards north and northwest India taking a pause. Delhi could again see 40-plus temperatures over the next couple of days though occasional thundershowers could …

Forecast for mets: grim

Meteorology isn't what it used to be predicting monsoons may become costlier now. An increase in the frequency of extreme weather events like intense rainfall has magnified the errors in observations and calculations required for predicting the weather. Chances for an error occurring depend on these parameters: the location of …

LIFE STRATOSPHERIC

Looking for life high in the atmosphere, the Indian Space Research Organisation found colonies

Earth's protective shield is stealing our air

The magnetosphere, long seen as our benign protector from the sun, may actually be focusing energy into the poles and aiding atmospheric loss.

Delhi is reeling under high levels of deadly ozone: CSE analysis

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 …

The effect of permafrost thaw on old carbon release and net carbon exchange from tundra

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 …

Monsoon hits Andamans right on schedule

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 …

Study challenges cosmic rayclimate link

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 …

Beyond mitigation: potential options for counter-balancing the climatic and environmental consequences of the rising.....

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 …

Solving the puzzle: researching the impacts of climate change around the world

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

Advanced weather radar: here, yet not here

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

The carbon balance of terrestrial ecosystems in China

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

China at the carbon crossroads

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.

Carbon Deal Seen Key To Amazon Preservation

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 …

Hot Summer, Absent El Nino Set To Aid India Monsoon

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 …

Warmer troposphere may threaten Himalayan glaciers

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 …

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