In the past ten years workers of atmospheric physics and environmental science paid great attention to sounding of the planetary boundary-layer, because the atmospheric boundary-layer is closely bound up with human ac...In the past ten years workers of atmospheric physics and environmental science paid great attention to sounding of the planetary boundary-layer, because the atmospheric boundary-layer is closely bound up with human activities. For example, take-off and landing of aircrafts; launching of missiles, rockets and satellites; transport of air pollutants and improvement of weather forecast, etc., all relating to the distribution of atmospheric parameters (air temperature and wind, etc.) in the planetary boundary-展开更多
Recently evidence shows that the global concentration of CH<sub>4</sub> is increasing by about 1% per year. The average worldwide tropospheric mixing ratio of CH<sub>4</sub> has increased from ...Recently evidence shows that the global concentration of CH<sub>4</sub> is increasing by about 1% per year. The average worldwide tropospheric mixing ratio of CH<sub>4</sub> has increased from 1.52 parts per million by volume （ppmv）in January 1978 to 1. 684 ppmv in September 1988.展开更多
文摘In the past ten years workers of atmospheric physics and environmental science paid great attention to sounding of the planetary boundary-layer, because the atmospheric boundary-layer is closely bound up with human activities. For example, take-off and landing of aircrafts; launching of missiles, rockets and satellites; transport of air pollutants and improvement of weather forecast, etc., all relating to the distribution of atmospheric parameters (air temperature and wind, etc.) in the planetary boundary-
文摘Recently evidence shows that the global concentration of CH<sub>4</sub> is increasing by about 1% per year. The average worldwide tropospheric mixing ratio of CH<sub>4</sub> has increased from 1.52 parts per million by volume （ppmv）in January 1978 to 1. 684 ppmv in September 1988.
