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 …

CO2 levels grew at record pace in 2016: United Nations

The amount of carbon dioxide in the earth's atmosphere grew at record rate in 2016 to a level not seen for millions of years, the United Nations said on Monday. It said this has the potential to fuel a 20-metre rise in sea levels and add 3 degrees Celsius to …

Greenhouse Gas Bulletin: the State of Greenhouse Gases in the Atmosphere Based on Global Observations through 2016

Concentrations of carbon dioxide in the atmosphere surged at a record-breaking speed in 2016 to the highest level in 800 000 years, according to the World Meteorological Organization's Greenhouse Gas Bulletin. The abrupt changes in the atmosphere witnessed in the past 70 years are without precedent. Globally averaged concentrations of …

Atmospheric observations show accurate reporting and little growth in India’s methane emissions

Changes in tropical wetland, ruminant or rice emissions are thought to have played a role in recent variations in atmospheric methane (CH4) concentrations. India has the world’s largest ruminant population and produces ~ 20% of the world’s rice. Therefore, changes in these sources could have significant implications for global warming. …

Climate change: Warming soils may intensify Earth's temperatures, warn scientists

The analysis of the results of the study has revealed that the warm dirt has accelerated the catastrophe of global warming At a time when climate change has the world in a tight grip, a recent study has issued a warning saying that, warming soils are releasing more carbon, thus …

Mid-air turbulence set to triple due to climate change in future

Climate change will significantly increase the amount of severe turbulence worldwide by 2050-2080, said the study published in the journal Geophysical Research Letters. London: Mid-air turbulence is likely to increase by up to three times in the coming decades due to climate changes, increasing the risk of injuries to passengers …

Shift of subtropical transport barriers explains observed hemispheric asymmetry of decadal trends of age of air

In response to global warming, the Brewer–Dobson circulation in the stratosphere is expected to accelerate and the mean transport time of air along this circulation to decrease. This would imply a negative stratospheric age of air trend, i.e. an air parcel would need less time to travel from the tropopause …

Japan sees 60 percent chance of no El Niño or La Niña through winter

TOKYO (Reuters) - Japan’s weather bureau projected on Monday that there are no active El Niño or La Niña patterns now and that it sees a 60 percent chance of normal weather conditions continuing through winter. The projection was the same as last month. There is a 40 percent chance …

Influence of super-parameterization and a higher-order turbulence closure on rainfall bias over Amazonia in Community Atmosphere Model version 5 (CAM5)

We evaluate the Community Atmosphere Model Version 5 (CAM5) with a higher-order turbulence closure scheme, named Cloud Layers Unified By Binomials (CLUBB), and a Multiscale Modeling Framework, referred as the “super-parameterization” (SP) with two different microphysics configurations to investigate their influences on rainfall simulations over Southern Amazonia. The two different …

Solar storms may trigger sperm whale strandings: explanation approaches for multiple strandings in the North Sea in 2016

The Earth's atmosphere and the Earth's magnetic field protects local life by shielding us against Solar particle flows, just like the sun's magnetic field deflects cosmic particle radiation. Generally, magnetic fields can affect terrestrial life such as migrating animals. Thus, terrestrial life is connected to astronomical interrelations between different magnetic …

El Nino aided in massive carbon dioxide release

Even as carbon emissions from use of fossil fuels flattened out in the past few years, the monster El Nino of 2014-16 caused over 3 billion tonnes of carbon to get released into the atmosphere, pushing carbon dioxide concentration to record levels. This was announced by scientists after they analysed …

Nigeria: NiMet to Establish 1,000 Automatic Weather Stations

The Nigerian Meteorological Agency (NiMet) has signed a Memorandum of Understanding (MoU) with Trans-African Hydro-Meteorological Observatory (TAHMO) in The Netherlands, to develop a network of Automatic Weather Stations (AWS) across the country. NiMet's Director-General, Professor Sani Mashi, said this in a statement by Mrs Tessy Ushie, the agency's Assistant General …

Increased light, moderate, and severe clear-air turbulence in response to climate change

Anthropogenic climate change is expected to strengthen the vertical wind shears at aircraft cruising altitudes within the atmospheric jet streams. Such a strengthening would increase the prevalence of the shear instabilities that generate clear-air turbulence. Climate modelling studies have indicated that the amount of moderate-or-greater clear-air turbulence on transatlantic flight …

State of the Climate in 2016

An international, peer-reviewed publication released each summer, the State of the Climate is the authoritative annual summary of the global climate published as a supplement to the Bulletin of the American Meteorological Society. The report, compiled by NOAA’s Center for Weather and Climate at the National Centers for Environmental Information …

A revival of Indian summer monsoon rainfall since 2002

A significant reduction in summer monsoon rainfall has been observed in northern central India during the second half of the twentieth century, threatening water security and causing widespread socio-economic impacts. Here, using various observational data sets, we show that monsoon rainfall has increased in India at 1.34 mm d−1 decade−1 …

Kenya enjoys rare snowy feel, but meteo agency says it was hail storm

Kenyans on Tuesday evening took to social media to celebrate a rare case of snow falling in the East African country. Photos and videos shared on social media showed whitish substance on the streets of the town of Nyahururu located in the country’s Laikipia County. The Kenyan Meteorological Agency, however, …

Tanzania sets up ice data centre on Mt Kilimanjaro

Tanzania is set to establish a well-equipped snow and ice data centre on Mount Kilimanjaro, Africa's highest peak, a senior official said Tuesday. Agnes Kijazi, the Director-General of Tanzania Meteorological Agency (TMA), said having the data centre will help provide answers as to why the ice cap at the peak …

At 399 ppm, India matches the world in atmospheric carbon dioxide levels

Satellite data show concentrations highest over Uttar Pradesh and Madhya Pradesh and lower over South India The first-ever picture of atmospheric carbon dioxide concentration over India shows that it is way above the safety mark and in line with what has been observed in other parts of the world. Since …

Pollution from cities also spreading to smaller towns and villages: Isro scientist

Varun Sheel, scientist at Isro’s Physical Research Laboratory, Ahmedabad specialises in the study of the atmosphere, the rapidly changing environment and the resultant climate change. An ex-student of Wynberg Allen School, Mussoorie, Sheel was recently in Mussoorie to interact with students of Woodstock school. He spoke to Prachi Raturi Misra …

Temperature variability is integrated by a spatially embedded decision-making center to break dormancy in Arabidopsis seeds

Both plants and animals make decisions in response to the environment to maximize their fitness. Plants use dormancy in seeds to move through time and space, and timing of the transition to germination is influenced by external cues, including temperature. Here, we report the presence of a decision-making center within …

U.S. weather forecasters predict above-normal hurricane season

U.S. weather forecasters on Thursday predicted more tropical storms in 2017 than normal for the Atlantic hurricane season, which last year brought one of the deadliest recorded storm systems that killed several hundred people. Meteorologists with the National Oceanic and Atmospheric Administration's Climate Prediction Center said there was a 70 …

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