关键词: 除草定, 除草定, 菠萝, 残留行为, 超高效液相色谱串联质谱仪

Abstract: The paper aims to improve the lightning disaster weather forecasting ability, and serve Tianzhushan tourism industry. Based on the meteorological observation data in Tianzhushan of Anhui Province, and Hefei Doppler weather radar echo images data, and NCEP FNL global analysis data, the author did meteorological analysis in detail on heavy lightning disaster of Tianzhushan on July 23, 2011. Atmospheric circulation characteristics were that the air above of the observation station was affected by southwest airflow before trough and lower strong warm advection. Surface layer was with tropical depression circulation in the western Pacific to inland, and 200 hPa was subtropical westerly jet. 1000-700 hPa pseudo-equivalent potential temperature decreased nearly 10℃ with height. Lifting condensation level and level of free convection were drawing close to 1000 hPa in T-lnP diagram, and the balance height was 200-300 hPa, CAPE was 2058 J/kg, while convective control energy was more than 300 hPa. The temperature and specific humidity increased significantly greater in low-level than in mid-high level at 14:00, and it showed that atmospheric was not stable. The low-level was wet air, and wet tongue extended to the station in the northeast. The station was located on the tongue tip. Dry air covered the mid-high level. This kind of humidity altitude distribution was good for the formation of thunderstorm. The characteristic of the thunderstorms radar echo was obvious.