Contact Us

If you have any comments, questions, and/or data requests, please send mail/e-mail including your full name, affiliation, postal address, comments, questions, data classifications, period, purpose, and/or schedule of publication/presentation (in case of data requests) to the following;

Space Environment Laboratory, Applied Electromagnetic Research Institute,
National Institute of Information and Communications Technology
4-2-1 Nukui-Kitamachi, Koganei, Tokyo 184-8795 Japan

Any comments and questions are useful for the future improvement of our service.


Most of our observatories are operated automatically. There is a possibility that delay of data distribution and irregular interruption of observations due to unexpected troubles.

If you publish a paper using the data obtained from WDC Tokyo, please acknowledge that the data are provided from "WDC for Ionosphere and Space Weather, Tokyo, National Institute of Information and Communications Technology" in the paper. Also we appreciate if you send the reprint of your paper. This is very important to continue the observations and to improve the quality and service of observation data.

(C) 2011 National Institute of Information and Communications Technology.