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 …
Freshly emitted soot particles are fractal-like aggregates, but atmospheric processes often transform their morphology. Morphology of soot particles plays an important role in determining their optical properties, life cycle and hence their effect on Earth's radiative balance. However, little is known about the morphology of soot particles that participated in …
Regardless of the harmful effects of burning fossil fuels on global climate other energy sources will become more important in the future because fossil fuels could run out by the early twenty-second century given the present rate of consumption. This implies that sooner or later humanity will rely heavily on …
The present work aims at studying a very recent episode of desert dust transport that affected Iberia in mid May 2015. The dust aerosols were detected over Évora, where a varied set of instrumentation for aerosol measurements is installed, including: a CIMEL sunphotometer integrated in AERONET, a Raman Lidar and …
Barring a freak weather event, this month will set a new record for the average daily maximum temperature in October across Australia For the record not to be broken it would take something insanely unlikely – a large volcano erupting somewhere on Australia's east coast, for example – pushing temperatures …
Persistent drought in northern Australia is having potentially deadly consequences as snakes seek refuge in urban areas during their quest for water. Paramedics in Queensland are treating more than a dozen snakebite victims per week, local media reported on Friday as experts warn the deadly eastern brown snake are becoming …
The Arctic Monitoring and Assessment Programme (AMAP), one of the six Working Groups of the Arctic Council, has released its assessment report on methane as a climate forcer. The report concludes that methane mitigation can complement action on carbon dioxide (CO2) mitigation in reducing Arctic warming, and contribute to reducing …
GCOS has released its report Status of the Global Observing System for Climate (GCOS-195) which has been submitted to the UNFCCC in December in Paris. The results of the global observing system have proved invaluable and have underpinned the IPCC fifth assessment report. However, as the IPCC identifies, there are …
Black carbon causes millions of deaths every year and contributes to the warming of the planet. In the atmosphere it appears as air pollution, with emissions arising mainly from the combustion of diesel fuel and biofuels, coal-fired power stations, biomass cook stoves, brick kilns and vegetation burning in open fields. …
Solar dimming and wind stilling (slowdown) are two outstanding climate changes occurred in China over the last four decades. The wind stilling may have suppressed the dispersion of aerosols and amplified the impact of aerosol emission on solar dimming. However, there is a lack of long-term aerosol monitoring and associated …
Upper-air radiosonde observations, taken during “Cloud Aerosol Interaction and Precipitation Enhancement EXperiment” (CAIPEEX) at Mahabubnagar (16.73°N, 77.98°E) under Integrated Ground Observation Campaign (IGOC) during the second half of southwest monsoon of 2011 have been analysed. Various weather data taken from India Meteorological Department as well as NCEP/NCAR reanalyzed upper-air wind …
We examine the response of Arctic sea ice to projected aerosol and aerosol precursor emissions changes under the Representative Concentration Pathway (RCP) scenarios in simulations of the Canadian Earth System Model. The overall decrease in aerosol loading causes a warming, largest over the Arctic, which leads to an annual mean …
This paper presents a method for attributing regional trends in the frequency of extremely hot days (EHDs) to changes in the frequency of the atmospheric patterns that characterize such extraordinary events. The study is applied to mainland Spain and the Balearic Islands for the extended summers of the period 1958–2008, …
India will now be one of the many countries where Nasa's airborne hyperspectral imaging campaign will take place which will closely monitor various changes taking place in the earth's atmosphere and capture high resolution images through the spectrometer developed by Nasa's Jet Propulsion Laboratory (JPL). Alok Chaterjee, scientist at the …
A study was taken up to identify annual changes in temperature. For this study, daily (maximum and minimum) temperature data for 45 years (1969–2013) prepared by the India Meteorological Department, Pune were used. The identification of change was based on statistical trend analysis. From the analysis, it can be concluded …
Global mean temperatures near the Earth’s surface continued to set new records between 2011 and 2015, consistent with rising levels of greenhouse gases in the atmosphere, according to preliminary findings of the assessment of the state of the climate in the current 5 years period. The year 2014 was nominally …
Satellite remote sensing of tropospheric nitrogen dioxide (NO2) can provide valuable information for estimating surface nitrogen oxides (NOx) emissions. Using an exponentially modified Gaussian (EMG) method and taking into account the effect of wind on observed NO2 distributions, we estimate 3-year moving-average emissions of summertime NOx from 35 US (United …
Low nitrogen availability in the high Arctic represents a major constraint for plant growth, which limits the tundra capacity for carbon retention and determines tundra vegetation types. The limited terrestrial nitrogen (N) pool in the tundra is augmented significantly by nesting seabirds, such as the planktivorous Little Auk (Alle alle). …
The UN has urged Pacific island nations to prepare now for a looming El Nino emergency which could affect more than 4 million people, UN spokesman Stephane Dujarric told reporters here Tuesday. The UN resident coordinator in Fiji, Osnat Lubrani, said that there are suggestions that this El Nino could …
Quasi-decadal variability in solar irradiance has been suggested to exert a substantial effect on Earth’s regional climate. In the North Atlantic sector, the 11-year solar signal has been proposed to project onto a pattern resembling the North Atlantic Oscillation (NAO), with a lag of a few years due to ocean-atmosphere …
Meteorologists have predicted that Britain will face its worst winter in over 50 years as a result of El Niño. The country is expected to be hit by a cold wave as early as October, cutting down autumn to just a month. Experts even fear a repeat of 1963, the …
