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 …
As part of the Global Atmospheric Passive Sampling (GAPS) study, XAD-resin based passive samplers are being deployed for consecutive one-year periods at numerous sites on all seven continents to determine annually averaged concentrations of persistent organic pollutants. Concentrations of banned organochlorine pesticides as well as a number of current-use pesticides …
This latest CPCB report provides details of the monitoring study conducted to measure Ozone levels, VOCs including carbonyls in ambient air in the city of Kolkata. It also includes recommendations for control of VOCs releases. Volatile Organic Compounds or VOCs play an important role in tropospheric chemistry byaffecting the OH …
The State Government has decided to go the Chinese way to deal with the erratic monsoon rains: It will test rocket launching system of cloud seeding to ensure rainfall and avoid agriculture drought. The new system will be experimented near Linganamakki and Thippagondanahalli reservoirs as well as Narayanapura dam in …
Divya Gandhi Bangalore: The spectre of global warming has generated some rather novel emergency fix-it proposals to stave off solar radiation from reaching the Earth. These include placing mirrors in space to reflect sunlight, injecting sulphate aerosols in the stratosphere and other such techniques of geo-engineering. A research article by …
John Vidal Last month was the hottest June ever recorded worldwide and the fourth consecutive month that the combined global land and sea temperature records have been broken, according to the U.S. government's climate data centre. The figures released on Thursday by the National Oceanic and Atmospheric Administration (NOAA) suggest …
India should strengthen its engagement with the monsoon, harvesting the rain, saving every drop of it There is one thing synonymous with being Indian that spans both urban and rural India, and transcends the rich-and-poor divide: The annual watch and wait for the monsoon. It begins every year without fail …
July 15: The agriculture minister, Mr N. Raghuveera Reddy, on Thursday said that the scientific data available with the government had proved that the cloud seeding operations yielded positive results. Replying to a question in the Assembly, the minister said that rainfall had increased by 4.76 per cent in 2005 …
The seasonal variability of phytoplankton biomass in the Arabian Sea, though a well researched topic, its inter-annual variability is less explored and understood. Analysis of the satellite-derived chlorophyll pigment concentration in the Arabian Sea during 1997
Ahmedabad: It is just the beginning of July and the Saurashtra-Kutch region has received 29.03 per cent of its annual rainfall. In the late 1990s, the situation was different. The region would hardly get rains. The Gujarat Agriculture University (GAU), Junagadh has studied 100-year rainfall data of Saurashtra region. Dr …
Emissions of African dust increased sharply in the early 1970s, but the human contribution to land degradation and dust mobilization remains poorly understood. Now, a 3,200-year record of dust deposition off northwest Africa has been constructed. On the basis of this dust record and a proxy record for West African …
Absorbing aerosols affect global-mean precipitation primarily in two ways. They give rise to stronger shortwave atmospheric heating, which acts to suppress precipitation. Depending on the top-of-the-atmosphere radiative flux change, they can also warm up the surface with a tendency to increase precipitation. Here, we present a theoretical framework that takes …
Satellite observations over the Arabian Sea revealed anomalous cooling in February 2008 associated with the anomalous north westerly winds from the continent. Land
Knowledge of cloud and precipitation formation processes remains incomplete, yet global precipitation is predominantly produced by clouds containing the ice phase. Ice first forms in clouds warmer than -36
Arctic New York, June 17: Arctic sea ice melted 50 per cent faster than the average rate during May 2010, with combined global land and ocean surface temperature being the warmest on record for the period from January-May, studies have suggested. Research at the US National Oceanic and Atmospheric Administration …
Volcanic eruptions release a large amount of sulphur dioxide. This is oxidized to sulphate and can then form sulphate aerosol, which can affect the Earth's radiation balance. Here, past volcanic eruptions and atmospheric conditions are investigated by using sulphur and triple oxygen isotope measurements of atmospheric sulphate preserved in the …
John Vidal Figures from U.S. scientists show Arctic sea ice is at a record low, while land temperatures are likely to hit new highs. New data from some of the world's leading climate researchers and institutions suggest that 2010 is shaping up to be one of the warmest years ever …
STATISTICAL PROOF: From 1995 to 2009, the model predicted a mean of 13.7 named storms of which a mean of 7.8 were hurricanes. In reality, the average during this period was 13.8 named storms with a mean of 7.9 hurricanes. Florida State University scientists who have developed a unique computer …
New Delhi: Increase in atmospheric temperature due to climate change adversely impacts the growth of the various agricultural crops, an assessment study conducted by Indian Council of Agricultural Research (ICAR) has said.
