Improvement of worldwide version of system for prediction of environmental emergency dose information (WSPEEDI), (2). Evaluation of numerical models by 137Cs deposition due to the Chernobyl nuclear accident
Creators
- 1. Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment
Description
The prediction performance of WSPEEDI (Worldwide version of System for Prediction of Environmental Emergency Dose Information), which consists of the atmospheric dynamic model MM5 and the Lagrangian particle dispersion model GEARN-new, is evaluated by measurements of precipitation and surface deposition of 137Cs over Europe during the Chernobyl accident. It is concluded that MM5/GEARN-new can predict 137Cs deposition distribution with good accuracy when accurate precipitation is predicted by using an explicit scheme on cloud microphysics with ice phase processes. High-resolution calculation is also conducted for the area surrounding Chernobyl by a nesting method. MM5/GEARN-new can quite realistically predict the distribution of 137Cs deposition around Chernobyl which cannot be calculated by the previous version. (author)
Additional details
Publishing Information
- Journal Title
- Journal of Nuclear Science and Technology (Tokyo)
- Journal Volume
- 42
- Journal Issue
- 7
- Journal Page Range
- p. 651-660
- ISSN
- 0022-3131
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 36084028
- Subject category
- S54: ENVIRONMENTAL SCIENCES;
- Descriptors DEI
- ATMOSPHERIC CIRCULATION; CESIUM 137; CHERNOBYLSK-1 REACTOR; COMPUTERIZED SIMULATION; DEPOSITION; DISPERSIONS; EVALUATION; JAERI; PARTICLE SIZE; PRECIPITATION; REACTOR ACCIDENTS
- Descriptors DEC
- ACCIDENTS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CESIUM ISOTOPES; ENRICHED URANIUM REACTORS; GRAPHITE MODERATED REACTORS; INTERMEDIATE MASS NUCLEI; ISOTOPES; JAPANESE ORGANIZATIONS; LWGR TYPE REACTORS; NATIONAL ORGANIZATIONS; NUCLEI; ODD-EVEN NUCLEI; POWER REACTORS; RADIOISOTOPES; REACTORS; SEPARATION PROCESSES; SIMULATION; SIZE; THERMAL REACTORS; WATER COOLED REACTORS; YEARS LIVING RADIOISOTOPES
Optional Information
- Notes
- 23 refs., 9 figs., 3 tabs.