Atmosphere And Ozone Layer

Order of the National Green Tribunal regarding ozone pollution across urban India, 21/03/2025

Order of the National Green Tribunal in the matter of News Item titled “CSE report finds dangerous increase in ozone pollution across urban India” appearing in Down to Earth dated 06.08.2024. The Principal Bench of the NGT heard the matter on March 21, 2025. In the original application, registered suo …

Ozone layer preservation day today

The international day for the preservation of the ozone layer is being observed on Tuesday with focus on combating the depletion of the earth

International ozone preservation day today

AHMEDABAD: Focusing on the harmful effects of ozone layer depletion, the Gujarat Council of Science City (GCSC), Department of Science & Technology, Government of Gujarat will, on Tuesday, organise various activities as a part of Ozone Awareness Programme to mark the 'International Day for Preservation of the Ozone Layer' on …

Ministry event to take note of depleting ozone layer

NEW DELHI Ozone layer is depleting and its effect can be felt on earth. Life on earth is bearing the effect of depleting ozone layer, caused by chemicals including chloroflurocarbons (CFCs). Every year, September 16 is observed as International Day for the preservation of the Ozone layer. Union ministry of …

The global atmospheric circulation on moist isentropes

The global atmospheric circulation transports energy from the equatorial regions to higher latitudes through a poleward flow of high-energy and -entropy parcels and an equatorward flow of air with lower energy and entropy content. Because of its turbulent nature, this circulation can only be described in some averaged sense. Here, …

N2O5 oxidizes chloride to Cl2 in acidic atmospheric aerosol

Molecular chlorine (Cl2) is an important yet poorly understood trace constituent of the lower atmosphere. Although a number of mechanisms have been proposed for the conversion of particle-bound chloride (Cl-) to gas-phase Cl2, the detailed processes involved remain uncertain. Here, we show that reaction of dinitrogen pentoxide (N2O5) with aerosol-phase …

Indian Institute of Tropical Meteorology

The Institute was formally established under the UNDP's Special Fund Project as the Institute of Tropical Meteorology (ITM) at Pune on November 17, 1962 as a distinct part of the India Meteorological Department (IMD). On April 1, 1971, the Government of India gave it an autonomous status with a new …

Indian Meteorological Department

The India Meteorological Department was established in 1875. It is the National Meteorological Service of the country and the principal government agency in all matters relating to meteorology, seismology and allied subjects.

Ministry of Earth Sciences

The Ministry of Earth Sciences (MoES) is mandated to provide the nation with best possible services in forecasting the monsoons and other weather/climate parameters, ocean state, earthquakes, tsunamis and other phenomena related to earth systems through well integrated programmes. The Ministry also deals with science and technology for exploration and …

Ozone Cell, Ministry of Environment and Forests

The Government of India has entrusted the work relating to ozone layer protection and implementation of the Montreal Protocol to the Ministry of Environment & Forests (MOEF). The MOEF has set up an Ozone Cell as a national unit to look after and to render necessary services to implement the …

Annual and seasonal variations in tropospheric ozone concentrations around Varanasi

This study examines the annual, seasonal and diurnal variations in the ambient concentrations of ozone at a suburban site of Varanasi, India, during 2002-2006. Prominent seasonal variations in ozone concentrations were recorded. Ozone concentrations were higher during the warmer months. Daytime 12-hourly mean monthly ozone concentrations varied from 45.18 to …

Cloud seeding put off by two days in Anantapur

Anantapur, July 27: The cloud seeding experiment to be conducted from Anantapur was postponed again by two days. The cloud seeding, which was to be launched on July 24 was initially postponed to July 27 as Agni Aviation Agency, which has entered into an agreement with the state government on …

Subtropical to boreal convergence of tree-leaf temperatures

The ratio of stable oxygen isotopes in tree-ring cellulose was first used to reconstruct temperatures during tree growth, and a seminal study showed a strong correlation between oxygen isotopes of woody tissue and mean annual temperature.

Forest air conditioning

During the growing season, with photosynthesis at its peak, leaf temperatures remain constant over a wide latitudinal range. This is a finding that overturns a common assumption and has various ramifications.

Patil to meet PM on cloud seeding

DH News Service, Hubli: Former minister and senior Congress leader H K Patil will soon meet Primary Minister Manmohan Singh and Agriculture Minister Sharad Pawar and appeal them to take up cloud seeding in different parts of the country to save farmers from continuous droughts. Speaking to media persons here …

Cloud seeding at Raiwada

Visakhapatnam July 17: The district administration is yet to take up the cloud seeding project for the region though it has been cleared by the state government recently. Cloud seeding would be carried out in Raiwada region as per the government orders. In its order the state asked the collector …

A unifying framework for dinitrogen fixation in the terrestrial biosphere

Dinitrogen (N2) fixation is widely recognized as an important process in controlling ecosystem responses to global environmental change, both today and in the past; however, significant discrepancies exist between theory and observations of patterns of N2 fixation across major sectors of the land biosphere. A question remains as to why …

Cloud seeding in 10 days

Anantapur, July 6: The agriculture minister, Mr N. Raghuveera Reddy, said that cloud seeding would be taken up in another 10 days due to lack of rains in Anantapur district. Speaking to newsmen here on Sunday, he said tenders were called to conduct cloud seeding for the next five years. …

The Montreal Protocol as a tool to regulate the ozone depletion

The Montreal Protocol with its subsequent amendments and adjustments has been providing a global regulatory framework for the phase out of ozone depleting substances. Till date, CFCs, CTC, HBFCs, methyl chloroform and halons have been already phased out completely by the developed countries and a number of other ODSs are …

Extensive halogen-mediated ozone destruction over the tropical Atlantic Ocean

Increasing tropospheric ozone levels over the past 150 years have led to a significant climate perturbation; the prediction of future trends in tropospheric ozone will require a full understanding of both its precursor emissions and its destruction processes. A large proportion of tropospheric ozone loss occurs in the tropical marine …

Sun, sea and ozone destruction

Halogens are known to decrease the levels of stratospheric ozone. The latest measurements show that something similar occurs in the lower atmosphere over tropical oceans

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