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 …

Environ issue: Wild Orissa submits memo to HLC

The Wild Orissa, an organisation working in the field of wildlife conservation, has submitted a memorandum to the High-Level Committee (HLC) formed by the Union Government to review certain environmental laws, appealing to it to ensure environmental stability and maintenance of ecological balance, including atmospheric equilibrium which is vital for …

Trends in pre-summer frontal and diurnal rainfall activities during 1982–2012 over Taiwan and Southeast China: characteristics and possible causes

Frontal convection (FC) and diurnal convection (DC) are the two most frequently observed weather systems affecting the pre-summer (May and June, MJ) rainfall formation over Taiwan and Southeast China. Focusing on the time period of 1982–2012 MJ months, this study found that the occurrence frequency of FC has declined, but …

Climate protection as a world citizen movement

Climate policy is getting nowhere, while climate change continues unchecked. Yet in the midst of this crisis of humankind there is new hope. It has to do with strong movements towards sustainability that have recently been forming everywhere in civil society: social networks, cities and local councils, religious communities, business …

Record hot August adds to world's warm spell

Last month was the hottest August on record globally, adding to a run of months with exceptionally warm conditions. According to US space agency NASA, worldwide land and sea-surface temperatures were 0.7 degrees above the 1951-80 baseline average - edging ahead of the previous high set in 2011 - as …

Obama targets a popular coolant in new effort to curb greenhouse gases

The Obama administration is preparing to introduce major steps to phase out production of a popular chemical coolant used in refrigerators and air conditioners, citing growing evidence that the substance is contributing to the warming of the planet. The White House will announce on Tuesday a series of voluntary commitments …

Message on the International Day for the Preservation of the Ozone Layer - 16 September 2014

The message of the United Nations Secretary-General on the 2014 International Day for the Preservation of the Ozone Layer - 16 September 2014 .

Ozone layer that started depleting in 1980s healing

The protective ozone layer that started depleting heavily in the 1980's is on a recovery mode according to a new assessment by 300 scientists across the world released on Thursday. "Assessment for Decision-Makers"-- a summary document of the Scientific Assessment of Ozone Depletion 2014 published by the United Nations Environment …

Assessment for decision-makers: scientific assessment of ozone depletion 2014

The Earth's protective ozone layer is well on track to recovery in the next few decades thanks to concerted international action against ozone depleting substances, according to a new assessment by 300 scientists. The Assessment for Decision-Makers, a summary document of the Scientific Assessment of Ozone Depletion 2014, is being …

The road where residents do not complain of pollution

COIMBATORE: Bharathi Park Road, named after the famous Bharathi Park built in 1934, and flanked by the forest college on one side, is known for its greenery and calm atmosphere. "Before Independence, this park was called Goshen Park as the then governor of Madras, H E Viscount Goshen, came to …

The state of greenhouse gases in the atmosphere based on global observations through 2013

The amount of greenhouse gases in the atmosphere reached a new record high in 2013, propelled by a surge in levels of carbon dioxide. This is according to the World Meteorological Organization’s annual Greenhouse Gas Bulletin, which injected even greater urgency into the need for concerted international action against accelerating …

Advective and atmospheric forced changes in heat and fresh water content in the Norwegian Sea, 1951–2010

Climate variability in the Norwegian Sea was investigated in terms of ocean heat and fresh water contents of Atlantic water above a reference surface, using hydrographic data during spring 1951–2010. The main processes acting on this variability were examined and then quantified. The area-averaged water mass cooled and freshened, but …

KEA concerned about proposed move to use Yusmarg as firing range

Kashmir Economic Alliance (KEA) said news about the Yusmarg as an alternate ‘firing range’ to Tosamaidan has once again become an issue of controversy. In a statement, KEA Chairman Mohammad Yasin Khan said it is great concern that tourist destinations are being used for ‘firing range’ which isaffecting the ecological …

Reduced wind strengthens top-down control of an insect herbivore

Global wind speeds have decreased 5–15% over the last 30 years and are expected to continue decreasing in the future. However, little is known about how wind affects species and their interactions within communities. The researcher experimentally tested the effects of wind on predator–prey interactions using soybean aphids and predatory …

Seasonal aspects of the recent pause in surface warming

Factors involved in the recent pause in the rise of global mean temperatures are examined seasonally. For 1999 to 2012, the hiatus in surface warming is mainly evident in the central and eastern Pacific. It is manifested as strong anomalous easterly trade winds, distinctive sea-level pressure patterns, and large rainfall …

Punjab Govt bans plastic bags, asks to maintain dignity of National Flag

Issuing strict instructions to maintain the dignity of the National Flag in the Punjab Government has banned the use of plastic flags. “Authorities in Punjab have been directed not to use plastic flags which are not biodegradable like the paper flags. This affects the dignity of the flag. Also plastic, …

U.S. Lowers Odds of El Nino Forming by End of Year

The odds of an El Nino forming in the equatorial Pacific have fallen to about 65 percent through the end of the year, the U.S. Climate Prediction Center said. Computer forecast models delay the onset of the El Nino, a warming of sea surface temperatures and corresponding atmospheric changes, said …

Transport of short-lived climate forcers/pollutants (SLCF/P) to the Himalayas during the South Asian summer monsoon onset

Over the course of six years (2006–2011), equivalent black carbon (eqBC), coarse aerosol mass (PM 1–10), and surface ozone (O 3), observed during the monsoon onset period at the Nepal Climate Observatory–Pyramid WMO/GAW Global Station (NCO-P, 5079 m a.s.l.), were analyzed to investigate events characterized by a significant increase in …

Upper-tropospheric moistening in response to anthropogenic warming

The fact that water vapor is the most dominant greenhouse gas underscores the need for an accurate understanding of the changes in its distribution over space and time. Although satellite observations have revealed a moistening trend in the upper troposphere, it has been unclear whether the observed moistening is a …

Quasi-resonant circulation regimes and hemispheric synchronization of extreme weather in boreal summer

The recent decade has seen an exceptional number of boreal summer weather extremes, some causing massive damage to society. There is a strong scientific debate about the underlying causes of these events. We show that high-amplitude quasi-stationary Rossby waves, associated with resonance circulation regimes, lead to persistent surface weather conditions …

Quantification of dissolved iron sources to the North Atlantic Ocean

Dissolved iron is an essential micronutrient for marine phytoplankton, and its availability controls patterns of primary productivity and carbon cycling throughout the oceans. The relative importance of different sources of iron to the oceans is not well known, however, and flux estimates from atmospheric dust, hydrothermal vents and oceanic sediments …

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