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基层气象台站气象仪器的维护和管理 总被引：1，自引：0，他引：1
实施“十五发展计划”以来,按照建设“一流装备、一流技术、一流人才、一流台站”的要求,中国气象局加大了对基层气象台站基础设施综合改善和新型气象仪器的投资力度,各类新型气象仪器装备到基层台站,地面观测项目也逐步向自动化、遥测化方向发展,很多台站安装了全天24小时工作 相似文献
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Dissolved inorganic nutrient elements were analyzed from the samples collected in the South Passage of the Changjiang (Yangtze River) Estuary in March 2003, including NH4 , NO3-, NO2- and PO43-. The water samples were collected with a Niskin sampler hourly at the near-surface, middle and near-bottom depths at the three stations -A1, A2 and A3-during two complete tidal cycles of neap tide and spring tide. Results showed that 1) the concentrations of NH4 , NO3- and NO2- were a little higher respectively during the neap tide than those during the spring tide, while PO43- showed an opposite trend, and each was higher in the ebb tide than in the flood tide, either for the neap tidal cycle or the spring tidal cycle; 2) higher stratification of the nutrients existed obviously in this area, with the concentrations of which increased from the bottom to the surface, especially for NH4 and NO3-; 3) the coefficient of variation (C.V.) values of all dissolved inorganic nutrients varied from 4.06% to 36.8% beyond different influences of the tidal current and Changjiang runoff; 4) with increasing suspended matter in the water column, the concentrations of PO43- became lower in the filtered water; and 5) the total transport of each tidal cycle was much more in the spring tide than in the neap tide, and the positive values indicated that the nutrients had been exported to the East China Sea. Studies on the variations and net transport of dissolved inorganic nutrients in the South Passage of the Changjiang Estuary will provide the scientific basis for the study of the mechanism of red tide in the East China Sea. 相似文献
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河南省乡镇雨量站使用的网络技术 总被引：1，自引：0，他引：1
介绍河南省GPRS雨量网使用的网络技术以及软件编程实现。该网络突破传统自动气象网络信息采集和传输等方面的弱点，结合移动无线传输和Internet技术，使用GPRS数据终端，实现雨量监测的自动化、无线化。采用VC 编程建立数据库，通过Winsock方式监听数据信息并进行处理。 相似文献
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