Research on upper atmosphere with EISCAT radars based upon international collaborations.

KST UHF雷达、VHF雷达和斯瓦尔巴群岛EISCAT雷达(ESR)等EISCAT雷达是世界上观测极光、极点和帽区电离层现象的最好工具之一。EISCAT雷达系统为我们提供了极地电离层的基本物理参数。日地环境实验室在促进使用EISCAT科学协会的ESR和KST雷达的各种研究项目方面发挥了核心作用；日本以NIPR为代表，于1996年4月作为第七个联系国加入了EISCAT科学协会。STEL与全国各地的研究人员合作，一直在进行特殊计划(SP)实验并创建通用计划(CP)数据档案。EISCAT数据库可通过网络向合作研究人员开放。日本特别计划(SP)实验是应全国合作研究人员提交的建议而进行的。STEL的极地雷达委员会对这些提议进行了评估。2003财政年度实施了五个重大的SP项目：(1)黑色极光研究；(2)离子上行研究；(3)磁层和电离层之间的耦合过程研究；(4)低热层中性风研究；以及(5)木星内磁层同步辐射光谱观测研究。除(5)外，所有这些项目都是在国际基础上进行的。本财政年度基于SP的其中一项重要科学成果是使用KST UHF和ESR雷达研究低热层风动力。我们对这两个雷达系统进行了为期8天的运行，这为我们提供了研究高纬度地区的2个大气潮汐波和风系统的巨大机会。我们还对EISCAT通用程序数据进行了归档。在CP数据库的基础上，进行了各种研究。

EISCAT radars such as KST UHF radar, VHF radar and Svalbard EISCAT radar (ESR) are one of the greatest tools in the world for observing ionospheric phenomena in the auroral, polar cusp and cap regions. EISCAT radar systems provide us with essential physical parameters over the polar ionosphere. Solar-Terrestrial Environment Laboratory (STEL) has been playing a central role in promoting a variety of research projects using the ESR and KST radars of the EISCAT Scientific Association ; Japan, represented by NIPR, joined the EISCAT Scientific Association as the seventh associate country in April 1996. STEL, in collaboration with researchers across the nation, has been conducting Special Program (SP) experiments and creating Common Program (CP) data archives. The EISCAT database is available to collaborative researchers through network.Japanese Special Program (SP) experiments have been conducted in response to proposals submitted from collaborative researchers across the nation. Those proposals were evaluated by the Polar Radar Committee in STEL. In fiscal year 2003 five major SP projects were conducted: (1) research on black aurora; (2) research on ion upflows; (3) research on coupling process between the magnetosphere and ionosphere; (4) research on the lower thermosphere neutral wind ; and (5) research on Jovian inner magnetosphere with the spectrum observation of the synchrotron radiation. All of these projects except (5) were conducted on an international basis.One of the prominent scientific results in this fiscal year based on SP is a study of the lower thermosphere wind dynamics using both KST UHF and ESR radars. We conducted an 8-day run with the both radar systems which provide us with great oppotunities to study 2 atmospheric tidal waves as well as wind system at high latitudes. We also archived EISCAT Common Program data. Based on the CP database, various studies have been carried on.