Dataset
ALOS series Open and Free Data
1. Updates
| Apr. 01, 2025 | |
|---|---|
| Feb. 05, 2025 | Alternative provision of ALOS-2 Open and Free data (PALSAR-2 ScanSAR L1.1) due to G-Portal outage (updated on Feb. 05, 2025) |
| Oct. 18, 2024 | Alternative provision of ALOS-2 Open and Free data (PALSAR-2 ScanSAR L1.1) due to G-Portal outage (updated on Oct. 31, 2024) |
| Oct. 4, 2024 | Announcement of PALSAR-2 ScanSAR L2.2 Product software update document was uploaded. |
| Jul. 24, 2024 | Added to about the L1.1/L2.2 processing and product release schedule for new PALSAR-2 ScanSAR observation data for "ALOS-2 / PALSAR-2 Product" | Sep. 15, 2023 | PALSAR-2 ScanSAR L1.1/L2.2 products for the following period have been updated from G-Portal. Obs. period: July 2023 |
| Aug. 07, 2023 | PALSAR-2 ScanSAR L1.1/L2.2 products for the following period have been updated from G-Portal. Obs. period: March 2023 - June 2023 |
| Apr. 11, 2023 | PALSAR-2 ScanSAR L1.1/L2.2 products for the following period are now available from G-Portal. Obs. period: August 2014 - February 2023 |
| Mar. 01, 2023 | ALOS-2/PALSAR-2 ScanSAR data for the Turkey earthquake released for free. |
| Nov. 07, 2022 | PALSAR-2 ScanSAR Level 2.2 (L2.2) products are now available to the public. |
| Jul. 27, 2022 | Trial release of PALSAR-2 Level 2.2 (L2.2) data has started. |
2. Introduction of each Open & Free data type
1) ALOS-2 / PALSAR-2 Product
For details, please see this link
Earthquakes in southeastern Turkey in 2023
JAXA has responded to Earthquake in Turkey and Syria, and conducted emergency disaster observations and provides data as requested by Disaster and Emergency Management Authority(AFAD), Ministry of Interior in Turkey, through Sentinel Asia and the International Disaster Charter.
1. JAXA G-Portal
L1.1 data is available free of charge from G-Portal.
Please click here to see how to download the product on G-Portal (gif animation).
| Obs date | Path | Beam | Pol | R/L | A/D | archive |
|---|---|---|---|---|---|---|
| 2023/2/11 | 185 | W2 | HH+HV | R | Asc | 2022/9/10 |
| 2023/2/12 | 76 | W2 | HH+HV | R | Dsc | 2022/9/11 |
| 2023/2/15 | 183 | W2 | HH+HV | R | Asc | 2019/9/18 |
| 2023/2/17 | 77 | W2 | HH | R | Dsc | 2022/9/16 |
| 2023/2/20 | 184 | W2 | HH | R | Asc | 2022/9/5 |
| 2023/2/22 | 78 | W2 | HH | R | Dsc | 2022/9/7 |
Therefore, file size of L1.1 data is quite huge (30 GB for single polarization and 60 GB for dual polarization data).
2. Google Earth Engine
https://code.earthengine.google.com/18927a33b2f3197e12bdead34062581d
3. AWS Open Repository
Registry of Open Data on AWS
https://github.com/awslabs/open-data-registry/blob/main/datasets/jaxa-alos-palsar2-scansar.yaml
Level1.1 and Level2.1 orthorectified product (without slope correction) is also available on Amazon Web Service (AWS).
Please click here [L1.1 , L2.1].
Analysis results using these PALSAR-2 data can be seen in "Updates on Earth".
2) ALOS / PALSAR Product
Detailed information will be announced on this web site in the future.
3) ALOS / AVNIR-2 Product
Detailed information will be announced on this web site in the future.