Air diffusion material sources exploration equipment, air diffusion material source exploration system and the atmospheric diffusion material sources exploration method

摘要

PROBLEM TO BE SOLVED: To provide a device, etc. for more rapidly surveying a source of atmospheric diffusion material and source strength.SOLUTION: An atmospheric diffusion material source survey device 20 is a device for surveying a source on the basis of on-site density measurement information on a spatial density distribution of a material diffusing in the atmosphere from a certain position, and comprises: a particle reverse tracking calculation part 25 that, with a density measuring point based on the density measurement information set as a starting point and an on-site measured density value based on the density measurement information set as source strength, applies time reversal to a particle motion equation for simulating material diffusion behavior through time behavior tracking of a Lagrange model particle in the atmosphere, and obtains density by each particle through simulation of reverse tracking of the particle in a source direction; and a source estimation calculation part 27 that converts the spatial density distribution obtained by integrating density to be obtained for each particle into a probability distribution at a position of a material to be surveyed.