Long-range model for atmospheric pollution analysis of background territories

Conference · Sat Dec 31 04:00:00 EST 1994

OSTI ID:197486

Gromov, S A ^[1]

---

1. Inst. of Global Climate and Ecology, Moscow (Russian Federation)

The goals of GEMS station`s measurement data analysis appear to evaluate inputs of regional sources into the long-term background atmospheric pollution level and to investigate its seasonal or multi-year changes. Lagrangian model is supposed to study atmospheric pollutant transport. It is based on 5-days backward trajectories calculated from wind-pressure relationships using meteorological data of Moscow World Meteorological Center. The two-layer barotropic model of BPL included to estimate such parameters as transporting averaged wind, turbulence coefficient and exchange with upper layers. Pollutant advection is simulated as moving of separate puffs along trajectories. Lateral diffusion is applied as a Gaussian approach. The vertical diffusion equation is solved numerically taking into account the BPL`s results and dry deposition which depends on seasonal features. A time-depending decrease of concentrations by first order chemical reactions is used when transformation of pollutants exists. Wet deposition is simulated by the same manner when cloudiness or precipitation takes place. The results are concentrations and depositions in each point for a chosen time interval. The model had been tested on analytical evaluations of long-range environmental background concentration of sulfur dioxide over former USSR` European territory.

• OSTI ID: 197486
• Report Number(s): CONF-9405167--
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
LONG-RANGE TRANSPORT
MATHEMATICAL MODELS
METEOROLOGY
POLLUTION SOURCES
RUSSIAN FEDERATION
SEASONAL VARIATIONS
SULFUR DIOXIDE
TIME DEPENDENCE