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 …
Atmospheric aerosols and their effect on clouds are thought to be important for anthropogenic radiative forcing of the climate, yet remain poorly understood. Globally, around half of cloud condensation nuclei originate from nucleation of atmospheric vapours. It is thought that sulfuric acid is essential to initiate most particle formation in …
About half of present-day cloud condensation nuclei originate from atmospheric nucleation, frequently appearing as a burst of new particles near midday. Atmospheric observations show that the growth rate of new particles often accelerates when the diameter of the particles is between one and ten nanometres. In this critical size range, …
El Nino, the warming of the surface waters of the Pacific Ocean, is a completely natural phenomenon which is known to affect the weather in many parts of the world. The current conditions gradually emerged at the end of 2014 and the beginning of 2015. At its peak in December …
Although unchecked carbon emissions into the atmosphere and other human actions have devastated many marine species there is one group of creatures that seems to be thriving. These are octopuses, squids and cuttlefish, known as cephalopods. This is the conclusion arrived at by a group of researchers after they studied …
Japan will see mostly average to warmer weather from June to August, the official forecaster said on Wednesday. Eastern Japan, including the most densely populated Tokyo area, will have a 40 percent chance of higher-than-average temperatures for the period, the Japan Meteorological Agency said in its monthly three-month forecast. The …
After a year of driving global temperatures to unprecedented warmth, the giant El Nino weather event in the Pacific is officially over, raising hopes that drought-hit regions may be in for some relief in Australia and elsewhere. The Bureau of Meteorology, which was the first to declare the event had …
Earth has dealt with a very hot temperature, something which cannot seem to end. According to the data released by NASA, the planet has recorded a scorching streak of warm months that has increased to seven. The earth's average temperature is 1.11 degrees Celsius or 2.0 degrees Fahrenheit above the …
Particulate matter is a major concern for public health, causing cancer and cardiopulmonary mortality. Therefore, governments in most industrialized countries monitor and set limits for particulate matter. To assist policy makers, it is important to connect the chemical composition and severity of particulate pollution to its sources. Here we show …
April 2016 was the hottest April on record globally – and the seventh month in a row to have broken global temperature records. The latest figures smashed the previous record for April by the largest margin ever recorded. It makes three months in a row that the monthly record has …
Gas hydrates stored on continental shelves are susceptible to dissociation triggered by environmental changes. Knowledge of the timescales of gas hydrate dissociation and subsequent methane release are critical in understanding the impact of marine gas hydrates on the ocean–atmosphere system. Here we report a methane efflux chronology from five sites, …
Nitrogen oxides are essential for the formation of secondary atmospheric aerosols and of atmospheric oxidants such as ozone and the hydroxyl radical, which controls the self-cleansing capacity of the atmosphere. Nitric acid, a major oxidation product of nitrogen oxides, has traditionally been considered to be a permanent sink of nitrogen …
The Observations and Modeling of the Green Ocean Amazon (GoAmazon2014/5) Experiment was carried out in the environs of Manaus, Brazil, in the central region of the Amazon basin for 2 years from 1 January 2014 through 31 December 2015. The experiment focused on the complex interactions among vegetation, atmospheric chemistry, …
A field observation of dust devils was conducted at Xiaotang over the Taklimakan Desert (TD), China, from 7 to 14 July 2014. The measurements of dust devil opacity with the digital optical method and the observed atmospheric boundary layer conditions were applied to investigate the dust devils’ formation mechanism, vertical …
In May 2014, the Balkans were hit by a Vb-type cyclone that brought disastrous flooding and severe damage to Bosnia and Herzegovina, Serbia, and Croatia. Vb cyclones migrate from the Mediterranean, where they absorb warm and moist air, to the north, often causing flooding in central/eastern Europe. Extreme rainfall events …
NASA data reveal that clouds won't slow the warming of the Earth as opposed to what was believed in the past, according to researchers. The temperature may increase faster for about 25 percent as the greenhouses gas pollution degenerates. Salon reported that the new research reveals that climate models have …
Flood control authorities issued alerts for more than 40 rivers in southern China as weather forecasters warned of more heavy rainstorms likely to bring floods in coming days. "The amount of rain in the area will be far above the same period in previous years," the China Meteorological Administration, the …
We develop a statistical model using extreme value theory to estimate the 2000-2050 changes in ozone episodes across the United States. We model the relationships between daily maximum temperature (Tmax) and maximum daily 8-hour average (MDA8) ozone in May-September over 2003-2012 using a Point Process (PP) model. At ~20% of …
The atmosphere–land–water connectivity of nutrients is not altogether accounted for in the Ganges Basin despite recent studies highlighting its importance. Together with surface inputs, rivers receive N and P through atmospheric deposition (AD), directly on water surfaces, and through lateral transport. Original Source
Fire is a common perturbation in the grassland ecosystems throughout the world. Effect of fire on carbon stock, rate of C-accumulation and soil CO2 flux have been studied in Imperata cylindrica–Sporobolus indicus-dominated grassland community of Manipur, Northeast India. Original Source
The mean global climate has warmed as a result of the increasing emission of greenhouse gases induced by human activities. This warming is considered the main reason for the increasing number of extreme precipitation events in the US. While much attention has been given to extreme precipitation events occurring over …
