Preparation of International Solar Terrestrial Energy Program

日地能计划(STEP)项目已被国际科学理事会推荐给每个相应的国家，作为日地物理科学委员会(SCOSTEP)的国际合作研究。本研究的目的是从国际和国内两个角度确定计划准备阶段的项目结构，项目涵盖从太阳到地球大气的日地关系的全部领域。行星际空间、磁层、电离层、中层大气、平流层和对流层等区域的能量传输是研究的主要内容，主要集中在与太阳黑子活动有关的可变分量；即紫外线能量和太阳风能在整个太阳-陆地空间的传输是关键对象。作为国家活动，1990年4月召开了第一步研讨会，研究日本STEP的详细规划；研究结果以日语出版，这些计划的摘要也以英文出版。通过这次研究计划的活动，建立了STEP国家计划的国际联系。具体项目是：i)筹备区域STEP地面气球和火箭诞生情况中心。ii)筹备建立STEP模拟促进办公室。iii)与NASA、ESA、InterCosmos和ISAS等四个空间机构编制的卫星计划合作，规划地面观测设施。因此，通过与国际对口单位的密切合作，为实施国家STEP计划，本方案成功地开展了STEP的筹备工作。

The project of the Solar Terrestrial Energy Program (STEP) has been recommended from ICSU to each corresponding country to pursue as SCOSTEP (Science Committee on Solar Terrestrial Physics) international colloboration studies. The present studies aim then to establish the structure of the projects in the preparation phase of the program both from the sides of the international and national stand points of viewes.The projects cover the total range of the fields in the solar terrestrial relationship starting from the sun to the earth's atmosphere. The energy transport through the regions of the interplanetary space, magnetosphere, ionosphere, middle atmosphere, stratosphere, and troposphere is main subjects of the studies mainly beeing focussed on the variable components associated with the sun spot activities ; i, e. The transport of energy of ultra violet and the solar wind energy through the whole solar-terrestrical space are key objectives.As the national activities the first STEP symposium has been held in April, 1990 to study the detail planning of STEP in Japan ; the results are published in Japanese, and abstracts of these programs have also been published in EnglishThrough the activity of this study program, the international connection of the STEP national program has been established. The detailed items are :i) Preparation of the regional STEP ground-based ballom and rocket-born situation center.ii) Preparation of the establishment of a STEP simulation promotion office.iii) Planning of ground based observation facilities collaborating with the satellite programs prepared by four space agencies such as NASA, ESA, Inter Cosmos and ISAS.Thus, towards the implimentation of the national STEP program with intimate collaborations with international counter parts preparation of STEP has successfully been carried out by the present program.