Laboratory for the Research of the Ozone Layer and the Upper Atmosphere

Scientific results:

The global distribution of total ozone content values ​​for 2015–2022 was reconstructed based on spectra measured by the Russian satellite instrument IRFS-2.

• Data were obtained and trends in total ozone content and other important gases (HNO3, ClONO2, HCl, HF, CFC-11, CFC-12, and HCFC-22) were estimated based on ground-based measurements over St. Petersburg from 2009 to 2023.

• An improved Earth system model was used to estimate climate and ozone layer changes up to 2100, based on scenarios developed for the Intergovernmental Panel on Climate Change (IPCC) Model Intercomparison Project (CMIP-6).

• Estimates of possible future decreases in UV radiation doses responsible for pre-vitamin D production over Russia have been obtained.

• The magnitude of the ozone layer response to events associated with explosive phenomena on the Sun, geomagnetic storms, and energetic particle fallout has been calculated.

• Using a chemistry-climate model modified for medium-term forecasting of the ozone layer state, an assessment of the success of reproducing the observed trends in the ozone layer and some ozone-depleting substances has been made.

• A database has been created on the ionization rates in the atmosphere associated with processes in the magnetosphere that are important for the ozone layer and the upper atmosphere.

• A new parameterization of the influence of orographic-gravity waves on circulation and the ozone layer has been created for use in chemistry-climate models.

• It has been shown that changes in solar activity can lead to changes in the conditions of reflection of acoustic gravity and planetary waves that affect ozone transport in the middle atmosphere.

• Solar proton events and magnetospheric proton precipitations have been shown to perturb the Global Electron Content.

• A new model covering the atmosphere, ionosphere and magnetosphere has been developed and tested for short-term simulation of the response to space weather events.

• A study of internal atmospheric variability has shown that it can lead to a false interpretation of the obtained perturbations of upper atmospheric parameters.

• It has been shown that during a geomagnetic storm at high latitudes, the concentration of nitric oxide in the main phase of the storm can increase by an order of magnitude.

Organizational and infrastructural changes:

A new world-class laboratory has been created

Computer cluster put into operation (around 1000 CPU cores)

Education and personnel occupational retraining:

The laboratory staff defended 6 candidate and 4 doctoral dissertations.

Cooperation:

MSU, RSHU, IZMIRAN, CAO, PGI, INM