Nagoya University

ERG Science Center data archive (ISEE, Nagoya University)

Open, machine-traversable HTTPS data archive operated by the ERG Science Center at Nagoya University's Institute for Space-Earth Environmental Research (ISEE, formerly STEL). It serves the Arase (ERG) satellite instrument data — att, hep, lepe, lepi, mepe, mepi, mgf, orb, pwe and xep — alongside ground-based observation data, guest datasets and the Conjunction Event Finder archive, in CDF. There is no OpenAPI and no REST contract: the interface is an Apache directory index over a stable path grammar, and it is consumed programmatically by the SPEDAS (IDL) and pySPEDAS (Python) analysis frameworks through the ERG plug-in, which resolves file paths against this host. The Conjunction Event Finder is a set of CGI services on the same host (/cef/geotail.cgi, /cef/cluster.cgi, /cef/akebono.cgi, /cef/reimei.cgi, /cef/tc1.cgi, /cef/tc2.cgi), moved to Nagoya from JAXA/ISAS DARTS in 2013. Verified live 2026-09-01: GET /data/ergsc/ returns 200 with a real index listing cef/, ground/, guest/ and satellite/, and GET /data/ergsc/satellite/erg/ returns 200 listing the ten instrument directories. No spec is generated for it — a directory tree is not a contract, and inventing one would be fabrication.

Documentation GitHub

Documentation

📖

Documentation

https://ergsc.isee.nagoya-u.ac.jp/data_info/howto.shtml.en

Other Resources

🔗

Website

https://ergsc.isee.nagoya-u.ac.jp/

🔗

SourceCode

https://github.com/spedas/pyspedas

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this

find_apisBrowse and filter every API in the catalog.
get_api_artifactsOne API's artifacts, grouped by type.
get_openapiThe primary OpenAPI for this API.
find_similar_apisAPIs that look like this one.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This API

curl "https://apis.io/api/v1/apis/ergsc-data-archive"

All apis

curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.

API entry from apis.yml

aid: nagoya:ergsc-data-archive
name: ERG Science Center data archive (ISEE, Nagoya University)
x-operator: institution
description: 'Open, machine-traversable HTTPS data archive operated by the ERG Science Center at Nagoya
  University''s Institute for Space-Earth Environmental Research (ISEE, formerly STEL). It serves the
  Arase (ERG) satellite instrument data — att, hep, lepe, lepi, mepe, mepi, mgf, orb, pwe and xep — alongside
  ground-based observation data, guest datasets and the Conjunction Event Finder archive, in CDF. There
  is no OpenAPI and no REST contract: the interface is an Apache directory index over a stable path grammar,
  and it is consumed programmatically by the SPEDAS (IDL) and pySPEDAS (Python) analysis frameworks through
  the ERG plug-in, which resolves file paths against this host. The Conjunction Event Finder is a set
  of CGI services on the same host (/cef/geotail.cgi, /cef/cluster.cgi, /cef/akebono.cgi, /cef/reimei.cgi,
  /cef/tc1.cgi, /cef/tc2.cgi), moved to Nagoya from JAXA/ISAS DARTS in 2013. Verified live 2026-09-01:
  GET /data/ergsc/ returns 200 with a real index listing cef/, ground/, guest/ and satellite/, and GET
  /data/ergsc/satellite/erg/ returns 200 listing the ten instrument directories. No spec is generated
  for it — a directory tree is not a contract, and inventing one would be fabrication.'
humanURL: https://ergsc.isee.nagoya-u.ac.jp/
baseURL: https://ergsc.isee.nagoya-u.ac.jp/data/ergsc/
tags:
- Research Data
- Open Data
- Space Physics
- CDF
- Arase
- SPEDAS
- Satellite
properties:
- type: Documentation
  url: https://ergsc.isee.nagoya-u.ac.jp/data_info/howto.shtml.en
- type: Website
  url: https://ergsc.isee.nagoya-u.ac.jp/
- type: SourceCode
  url: https://github.com/spedas/pyspedas