Did the nuclear radiation from the Japanese earthquake have any impact on us in China?

At least currently, there is no impact on the spread and diffusion of pollutants in the atmosphere. The situation is mainly determined by the environmental wind field and atmospheric conditions. The state of the atmosphere determines the height range at which pollutants diffuse in the atmosphere. If the atmosphere is stable, pollutants cannot break through the stable layer and can only accumulate at the bottom and be propagated and diffused by the bottom airflow. If the atmosphere is unstable, pollutants will rise to high altitudes and be carried further by strong high-altitude winds. In addition, the process of rain and snow will quickly deposit pollutants to the ground, and the pollutants in the air will be reduced. Therefore, when meteorological conditions change, especially when the wind field is adjusted, the broadcast of pollutants will change accordingly. Fortunately, the accuracy of numerical weather forecasting has improved significantly, and the weather system period is approximately a few days to a week. At least judging from the rolling broadcast of the China Meteorological Administration, the current leakage of pollutants from Japan's nuclear power plants has no impact on our country. The Beijing Regional Environmental Emergency Response Center continuously updates nuclear proliferation forecasts. If the weather situation changes in the near future, the proliferation model results will be adjusted in time. The closest province in China to Japan is at least 1,000 kilometers away. Even if the forecast shows that the wind field changes and pollutants may spread towards our country, considering the weakening of pollutant diffusion concentration and the sedimentation process, we should have enough time to respond. According to reports on the 16th: Li Yun, a forecaster at the National Ocean Forecast Station, said that judging from the forecast at 10 a.m. on the 15th, in the next three days, the ocean current will first move to the southwest and then east. If there is a nuclear leakage pollution source, it will There will be no impact on my country's waters. From the perspective of the influence of ocean currents, Fukushima is on the east coast of Japan. The coast happens to be the intersection of the Kuroshio Current and the Oyashi Current. These two current systems are the western boundary currents of the Western Pacific. Their directions are relatively fixed and they exist all year round. Although the two currents, one from south to north and the other from north to south, flow complicatedly near Fukushima, the general trend is to develop eastward, and the current flows eastward into the Pacific Ocean. If nuclear leakage and pollution occurs in this seawater basin, the impact on our country's sea areas may be relatively small, unless special short-term changes occur, such as strong winds that change the direction of ocean currents. In general, the possibility of nuclear leakage pollution affecting our country through ocean currents is very small, and there is no need for the public to panic.