How to Access GEMS Data
Data Service
We inform you of how to access GEMS data as follows.
Download from the ESC website (nesc.nier.go.kr)
SFTP service (A written application form required)
External hard drive (A written application form required)
For SFTP or external hard drive service, please make sure to submit the application form to the ESC (Korean users: via an official document, Foreign users: via email).
※ Previously approved SFTP users also should submit the application form again if they request another product(s).
※ GEMS Open-API service will start in 2023.
The list of GEMS products available
[ Level 2 Data ]
Algorithm Version 1.0 (June 28 - November 29, 2022)
Algorithm Version 2.0(November 1, 2022 - present)
※ As of April 26, 2023, the period of algorithm v2.0 data available through the SFTP service has changed:
From [November 30, 2022 – present]
To [November 1, 2022 – present]
[ Level 3 Data ]
1. Daily and Monthly average NO2 data
Please download and fill out the application form attached and send it to either Kim Goo (kimgoo9@korea.kr) or Kim Mijeong (mjkim48@korea.kr).
For inquiries regarding GEMS algorithms, contact Hong Hyunkee (wanju77@korea.kr).