AI-generated Key Takeaways
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This page provides access to a variety of JAXA ALOS PALSAR and PALSAR-2 datasets, including StripMap, ScanSAR, and global mosaics.
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Datasets include both raw SAR data and derived products such as forest/non-forest classifications.
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Global mosaics are available at 25m resolution and are composed of carefully selected strips to minimize cloud and snow cover.
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PALSAR-2 ScanSAR data offers broad area coverage with an observation width of 350 km and has been orthorectified and slope corrected.
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Emergency observation data from ALOS-2 PALSAR-2, starting January 1st, 2024, is being made openly accessible for disaster management purposes.
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ALOS-2 PALSAR-2 StripMap Level 2.1
Starting from the night of January 1st, 2024, based on the request from Japanese ministries and related organization, JAXA implemented ALOS-2 PALSAR-2 emergency observation. Since JAXA expects these emergency observation data to be extremely useful for disaster management, JAXA decided to open these data on … alos2 eroc jaxa palsar2 radar sar -
Global 3-class PALSAR-2/PALSAR Forest/Non-Forest Map
A newer version of this dataset with 4 classes for 2017-2020 can be found in JAXA/ALOS/PALSAR/YEARLY/FNF4 The global forest/non-forest map (FNF) is generated by classifying the SAR image (backscattering coefficient) in the global 25m resolution PALSAR-2/PALSAR SAR mosaic so that strong and low backscatter pixels … alos alos2 classification eroc forest forest-biomass -
Global 4-class PALSAR-2/PALSAR Forest/Non-Forest Map
The global forest/non-forest map (FNF) is generated by classifying the SAR image (backscattering coefficient) in the global 25m resolution PALSAR-2/PALSAR SAR mosaic so that strong and low backscatter pixels are assigned as "forest" and "non-forest", respectively. Here, "forest" is defined as the natural forest with … alos alos2 classification eroc forest forest-biomass -
Global PALSAR-2/PALSAR Yearly Mosaic, version 1
A newer version of this dataset with data for 2015-2021 can be found in JAXA/ALOS/PALSAR/YEARLY/SAR_EPOCH The global 25m PALSAR/PALSAR-2 mosaic is a seamless global SAR image created by mosaicking strips of SAR imagery from PALSAR/PALSAR-2. For each year and location, the strip data were selected … alos alos2 eroc jaxa palsar palsar2 -
Global PALSAR-2/PALSAR Yearly Mosaic, version 2.5.0
The global 25m PALSAR/PALSAR-2 mosaic is a seamless global SAR image created by mosaicking strips of SAR imagery from PALSAR/PALSAR-2. For each year and location, the strip data were selected through visual inspection of the browse mosaics available over the period, with those showing minimum … alos alos2 eroc jaxa palsar palsar2 -
PALSAR-2 ScanSAR Level 2.2
The 25 m PALSAR-2 ScanSAR is normalized backscatter data of PALSAR-2 broad area observation mode with observation width of 350 km. The SAR imagery was ortho-rectificatied and slope corrected using the ALOS World 3D - 30 m (AW3D30) Digital Surface Model. Polarization data are stored … alos2 eroc jaxa palsar2 radar sar