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Solar Radiation Transfer


Mathematical Models and Software for Operative Evaluation of Solar Radiation Characteristics According to Data of Satellite and Ground-Based Meteorological Measurements

Tech Area / Field

  • ENV-MIN/Monitoring and Instrumentation/Environment
  • OBS-NAT/Natural Resources and Earth Sciences/Other Basic Sciences

3 Approved without Funding

Registration date

Leading Institute
Karpov Institute of Physical Chemistry, Russia, Moscow

Supporting institutes

  • Moscow State University / Meteorological Observatory, Russia, Moscow\nKurchatov Research Center / Institute for Molecular Physics, Russia, Moscow


  • NASA / Goddard Space Flight Center, USA, MD, Greenbelt

Project summary

The purpose of the project is developing regression mathematical methods for operative evaluation of fluxes and inflows of short-wave (solar) and long-wave (own radiation of atmosphere and underlying surface) radiation using the measurements of atmosphere parameters from satellites and ground-based meteorological stations.

A basis of computing procedure is mathematical method of multifactor regressions, founded on mathematical modeling of radiative transfer at various types and levels of cloudiness. The simulation of radiative transfer will be carried out by a Monte-Carlo method with the detailed account of effects of scattering and absorption of radiation in atmosphere and reflection from an underlying surface. Various models of atmospheric aerosols should be used to take into account an influence of antropogeneous contamination.

Selective absorption of radiation by atmospheric gases is taken into account (by separate bands) on the basis of modern spectrometric information HITRAN-96. The spatial structures of a broken cloudiness are described by a normal field, limited from below. As input parameters of such an approach one utilize level of cloudiness and average diameter and thickness of clouds.

The project will result in analytical expressions for radiation fluxes and inflows depending on parameters of atmosphere over mean square 100-2500 km2. Specially UV-radiation levels at the surface of the Earth will be evaluated, keeping in mind the great importance of its influence on biosphere now and in the future. Accuracy and restrictions of applicability of obtained dependencies will be analyzed, including the test of synchronous ground and satellite measurements.

The obtained results could be used in problems of the theory of a climate, weather forecast, evaluation of ecological conditions of atmosphere and underlying surface.

They can be also applied in International Program: Global Atmosphere Watch (GAW) WMO; Intergovernmental Panel on Climate Change (IPCC); Word Climate Research Program (WCRP); Atmospheric Radiation Measurements (ARM) Energy Commission USA

Foreign collaborator

1. Laboratory for Atmospheres NASA/Goddard Space Flight Center (GSFC NASA).
2. Stir Trading Limited (STL).

Potential role of foreign collaborator

1. Collaboration in the time of investigation the radiative heating and cooling of the atmosphere and surface (GSFC NASA);
2. Rendering of consultative assistance (GSFC NASA);
3. Collaboration in the problems of operative evolution background solar radiation, outgoing in cosmic (STL).


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