摘要
文章介绍了大气中天然放射性核素铍 7(7Be)、铅 2 10 (2 10 Pb)源、汇特征以及示踪大气动力输送过程的一般原理。对国内、外有关7Be、2 10 Pb观测研究历史、现状以及它们在大气科学中应用成果也作了综述性的描述。7Be和2 10 Pb是示踪研究平流层与对流层交换、气溶胶干、湿沉降等过程的一个重要的示踪物。随着大气中传统的核试验所产生的13 7Cs、90 Si等示踪同位素背景浓度的降低 ,7Be和2 10 Pb的示踪作用在大气科学应用中将越来越得到重视。
Natural isotopes, 7Be and 210 Pb,including their sources, sinks, and their principles of tracing the atmospheric transport process are briefly introduced in this paper. A general description on the observation histories and the achievements of being as tracers in atmospheric sciences are summarized. Both 7Be and 210 Pb have been approved to be as validate and efficient tools in tracing the atmospheric dynamical processes, such, as the Stratosphere-troposphere exchange, dry or wet deposition. With the reduction of atmospheric artificial isotopes from nuclear weapon tests, such as 137 Cs、 90 Si , 7Be and 210 Pb will have been extensively applied in atmospheric sciences in the future.
出处
《气象科技》
北大核心
2003年第3期131-135,共5页
Meteorological Science and Technology
基金
国家自然科学基金"利用铍 7和铅 2 10示踪研究高原大气微物理成分输送特征 ( 4 0 175 0 3 2 )资助
