Who we are

We are scientific group whose activity in general take place in Brazil. At present the permanent members of the group are

Dr. Igor A. Pisnichenko ,
Dr. Tatiana A. Tarasova,

but always there are others, more or less impermanent, travelling companions. We appeared in Brazil in the middle of nineties by kind invitation of former director of CPTEC/INPE Dr. C.A. Nobre. It was a time of height of science crisis in Eastern Europe. We came and found the support and interests to our research activities. Soon we took a liking to this sunny warm country.
Before it, we were working in the Moscow A.M. Oboukhov Institute of Atmospheric Physics (IAP) where we have come after graduating Physics Department of Moscow State University in the end of 70-s years.

Every group should have a name. We named our group as "Chernigov" that means the name of 'group directory' which we are using since started to work together. This joining has born some new fruits.

Fields of Investigations

Our group is carrying out researches in Atmospheric Science. Fields of our interests include following themes:

• development of dynamical data assimilation methods;
• a numerical modeling of regional climate;
• diagnostic investigations of global atmospheric circulation using conceptions of adiabatic invariants (potential temperature - potential vorticity);
• blocking investigations
• instability theory,global atmospheric circulation theory and the climate theory;
• study of aerosols impact on Earth's global albedo and surface air temperature using global climate model;
• retrieving of aerosol and cloud optical parameters from solar radiation measurements on the ground;
• study of impact of aerosols and clouds on top and surface radiation balance using data of radiation field experiments;
• analysis of solar irradiance measured at Amazonian observational sites in smoke aerosol conditions;
• development of broadband solar radiation codes for atmospheric models;
• evaluation of radiation fluxes and cloud radiative forcing in GCM against satellite-derived data;
• implementation of new solar and thermal radiation schemes into atmospherical models. Analysis of models' performance with the new schemes.

Current Research Activity and Technological Developments

During last four years principal efforts in our work have been directed to constructing the climate version of regional ETA model and making 30-years modern climate simulation and future(2070-2100) projecting experiments. It was made the analysis of consistency between large-scale output of regional model and data of driving global circulation model and showed that the new climate version of the Eta model can be used in downscaling the global HadAM3P model output fields. It was developed some new approaches for evaluation of consistency and prepared programs for quantitative assessments.
Jointly with researchers from Campinas University it was also obtained some interesting and promising results on continuous dynamic data assimilation for regional model.