2026/03/06

<Announcement on Network Equipment Power Supply Malfunction>
Since around 03:15 on Fri. March 6, 2026, users had not connected to GOSAT Data Archive Service due to the power supply malfunction of the network equipment.
It has been recovered around 04:45 on the same day.
We apologize for any inconvenience this may have caused.

2026/03/03

<Announcement of GOSAT Data Archive Service System Maintenance>
We would like to notify you of GDAS system maintenance.
During the following period, GDAS will be interrupted or disconnected and unable to login for several minutes during the following period.
The period of System Maintenance:
from 06:30 to 08:00 on Mon. Mar. 9, 2026 (UT)
Thank you for your cooperation and understanding.

2026/02/17

<Resuming the observation data Distribution of GOSAT TANSO-FTS>
The GOSAT has stopped the TANSO-FTS observation data Distribution since December 18, 2025. After the TANSO-FTS restart operation, the observation data Distribution resumed from February 4, 2026. The TANSO-CAI observation also restarted as well as the TANSO-FTS restart operation.

TANSO-FTS data stop period (confirmed) :
2025/12/18 06:02:14 ～ 2026/2/4 02:45:58 (UT)
TANSO-CAI data stop period (confirmed) :
2026/1/26 23:43:19 ～ 2026/2/3 02:42:13 (UT)

2026/02/05

<Announcement of the Observation request for RA researchers (for Apr., 2026)>
We will start accepting the observation request (from Apr. 6, 2026 to May 3, 2026) of GOSAT/FTS from the PIs.
For Submission method of Observation Requests, please see "Submission of Observation Requests" on "Documents & Information" page after logging into GDAS.
  *Period for the observation : Apr. 6 (Mon), 2026 through May 3 (Sun), 2026 (UT)
  *Period to accept observation requests : 15:00 Jan. 28 (Wed), 2026 through 14:59 Feb. 18 (Wed), 2026 (UT).

2025/12/22

<Closing at Year Ends and New Year>
We are closing for the New Year holiday between 27 Dec. 2025 and 4 Jan. 2026 (JST). We will unable to respond to your inquiries and/or accept authorized user registrations from 6:00 (UT) on 26 Dec. 2025 until 00:00 (UT) on 5 Jan. 2026.
Even while we are closing, following functions are still available for you:
access to information, general user registrations and product downloads by the registered users.
We apologize for any inconvenience that might be causing you during this period.

2025/12/19

<Data delivery temporal suspension of the GOSAT TANSO-FTS>
Data delivery of the GOSAT TANSO-FTS will be temporally suspended from the observations on December 18, 2025 due to an unknown event of the TANSO-FTS.

TANSO-FTS data suspension period : 2025/12/18 06:02:14 - (UT)