Japan Aerospace Exploration Agency, JAXA, has produced the 4 year-25m spacing global PALSAR mosaics, that Advanced Land Observing Satellite (ALOS)/ Phased array Type L-band SAR (PALSAR) collected globally from 2007 to 2010 using the accurate SAR processing1,2,3). JAXA also produced the first version of the 10m spaced global forest/non-forest map experimentally 2010 4,5). This time, we have produced the new forest/non-forest map (FNF-map) (validation version) by precisely evaluating the mosaic data regionally and temporally and comparing with the optical data (Google Earth images) and ground truth data6). Fig. 1 shows the FNF map of 2007, 2008, 2009, and 2010. FNF-map is the important geophysical information on investigating the temporal forest land change, terrestrial causes on global warming, and proceeding the activity on Reducing the Emission from Deforestation and forest Degradation plus (REDD+). This map was validated within the accuracy of 90% in comparison with three types of the ground truth data.
JAXA allows everyone to downloading the 25m data freely in order to utilize the L-band SAR data for the forest application. And Low-resolution version "FNF100" is also released at the same time. FNF100 is 100m resolution Forest/Non-Forest data reduced from the 25m original data.
The above accuracy was obtained from the random analysis between the truth data and the FNF globally. Since the forest definition depends on the country, this FNF-map needs to be improved more.
This map was validated within the accuracy of 90% in comparison with three types of the ground truth data.
GEOSS Data-CORE dataset ?The GEOSS Data Collection of Open Resources for Everyone (GEOSS Data-CORE) is a distributed pool of documented datasets with full and open unrestricted access at no more than the cost of reproduction and distribution?
It is prohibited to re-distribute the PALSAR mosaic and FNF data as is that users download at http://www.eorc.jaxa.jp/ALOS/en/palsar_fnf/data/index.htm. However, users can use the PALSAR mosaic and FNF data as is for research and publish thesis or research report, and modify the PALSAR mosaic and FNF data and publish or re-distribute such modified data. In such cases, data source shall be appropriately acknowledged as follows;
In case of use of the PALSAR mosaic and FNF data as is: ?JAXA In case of users modify the PALSAR mosaic and FNF data and use such modified data: Original data provided by JAXA
It is prohibited to use the PALSAR mosaic and FNF data for commercial, profit-making purposes without JAXA's consent. If users wish to use the PALSAR mosaic and FNF data for such purposes, please make contact to JAXA (firstname.lastname@example.org).