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

KST超高频雷达、甚高频雷达和斯瓦尔巴特群岛EISCAT雷达（ESR）等EISCAT雷达是世界上观测极光、极尖和极冠区域电离层现象的最佳工具之一。EISCAT雷达系统为我们提供了极地电离层的基本物理参数。日地环境实验室在利用EISCAT科学协会的ESR和KST雷达促进各种研究项目方面发挥了中心作用;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，并创建共同计划（CP）数据档案。EISCAT数据库通过网络提供给合作研究人员。日本特别计划（SP）的实验是根据全国合作研究人员提交的建议进行的。STEL的极地雷达委员会对这些建议进行了评估。在2003财政年度，进行了五个重大的科学计划项目：（1）研究黑极光;（2）研究离子上升流;（3）研究磁层和电离层之间的耦合过程;（4）研究低热层中性风;（5）利用同步辐射的光谱观测研究木星内磁层。本财政年度基于SP的突出科学成果之一是使用KST UHF和ESR雷达研究低热层风动力学。我们用这两套雷达系统进行了为期8天的运行，这为我们研究高纬度大气潮波和风系提供了很好的机会。我们还存档了EISCAT通用程序数据。基于CP数据库，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.