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Ozone layer Study

#0404


Active-method Study of the Effect of Man-related Reactors on the Ozone Layer.

Tech Area / Field

  • ENV-EHS/Environmental Health and Safety/Environment

Status
3 Approved without Funding

Registration date
22.05.1995

Leading Institute
NPO Astrophysica, Russia, Moscow

Supporting institutes

  • NII Burevestnic, Russia, N. Novgorod reg., N. Novgorod\nScientific & Production Association “Typhoon”, Russia, Kaluga reg., Obninsk\nRussian Academy of Sciences / Institute of Applied Physics, Russia, N. Novgorod reg., N. Novgorod

Project summary

Goals of the Project:

• To develop an inexpensive, ecologically safe means for the delivery of different chemical substances (ozone-active admixtures, tracers and others) and, later on, devices into the upper troposphere and stratosphere for experiments on studying the Earth ozone layer as well as other properties of the atmosphere;

• To prepare and conduct an active field experiment to study the catalytic mechanism of ozone destruction under the effect of man-caused stratospheric admixtures, to determine the contributions of different ozone destruction substances and to assess the hazard of man-caused pollution for the environment;

• To test and define more exactly the parameters of models of local ozone destruction by rockets and stratosphere airplane fuel combustion waste;

• Тo furnish to the weapons scientists and engineers a civic alternativefor application of their skill and knowledge.

Technical Approach:

Existing estimates of ozone destruction under the effect of mancaused pollution of the stratosphere are based on modeling results. They have not yet been verified by field experiments. In this project, experiments will be carried out to introduce into the stratosphere some tens of kilograms of different catalytic agents, for instance, nitrogen dioxide (as nitrogen tetraoxide), chlorine and bromine, and to observe ozone destruction and replenishment processes as well as the transformation of the chemicals introduced. According to preliminary estimates, which were made with an axis-symmetric, multi-level mathematical model, a decrease of total ozone content in such an experiment may reach 1%, which is an easily detectable value. To deliver a reagent into the stratosphere a 203 mm artillery gun will be used. This allows a reagent cell weighing up to 100 kg to be delivered to heights of 30-40 km. High accuracy of firing (a 20-40 m deflection) will make it possible to accurately locate groundbased spectral instruments, which will measure ozone and other minor constituents of the atmosphere.

For measurements of the total ozone content, of ozoneand othergases concentrations the spectroscopic devices, filter ozone-meters, lidar and microwave equipment are proposed. Estimates show that these means are capable of measuring a predicted ozone decrease with a confidence level of at list 95%. Along with the planned measurements of different gases concentrations, the atmospheric temperature and wind profiles will be determined by balloon sounding. Velocity and direction of wind and the turbulent regime of the atmosphere at the heights of the reagent discharge will be accurately determined by tracking smoke clouds formed as a result of firing cells with smoke agents. The project will be implemented using existing artillery gun mounts and measuring instrumentation that require only slight for use in these experiments.

Expected Results

• Inexpensive and ecologically safe equipment and method for carrying out active experiments in the upper troposphere and stratosphere;

• Experimental data on the ozone layer response to man-made pollution of the stratosphere by different catalytic reagents.

• Improved models of local ozone destruction caused by rocket launches and flights of stratosphere airplanes.

Potential Role of Foreign Collaborators:

Participation of scientists, engineers and technicians from universities, institutes and laboratories in planning the experiments, in model estimating expected effects, direct field measurements made by the specialists with their measuring devices and joint analysis of the data obtained during the experiments are welcome.


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