Proposal of the Global Land Cover Ground Truth(GLCGT) Database Ryutaro Tateishi Center for Environmental Remote Sensing (CEReS), Chiba University, Japan GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, March 2002

ground truth data = training data + validation data

Mayaux’s plan on quality assessment - use existing validation material - prepare new validation material validation material  validation data  validation data for distribution Tateishi’s proposal - distribute usable validation(or GT) data widely

Global Land Cover Ground Truth database (GLCGT database) The GLCGT database consists of regional land cover ground truth (RLCGT) data. The geographical size of a RLCGT data is flexible, from a city size to a continental size. --- metadata of RLCGT data (text) --- GT land cover code data (raster) --- GT site code data (raster) --- description of GT sites (text) --- optional data (text, raster, or any)

metadata of RLCGT data - RLCGT code (this code is assigned by the coordinator of the GLCGT database project) - the organization or project which produced this RLCGT data - representative person which produced this RLCGT data (name, affiliation) - contact person for this RLCGT data (name, affiliation, postal address or fax or ) - date of the production of this RLCGT data - latitude of the north edge of this region - latitude of the south edge of this region - longitude of the west edge of the region - longitude of the east edge of the region - pixel size (by arc second, must be square) - number of pixels (east-west) - number of pixels (north-south) - definition of the additional land cover code if necessary(usable codes are ) - description about optional data if there is

1. RLCGT code: Organization or project that produced this RLCGT data CEReS, Chiba University 3. Representative person who produced this RLCGT data (name, affiliation) Ryutaro Tateishi, CEReS, Chiba University 4. Contact person for this RLCGT data Ryutaro Tateishi, CEReS, Chiba University 1-33 Yayoi-cho Inage-ku Chiba Japan Phone: Fax: Date of the production of this RLCGT data: November 2001 Example of Metadata

6. Latitude of the north edge of this region 57 deg N Latitude of the south edge of this region 5 deg N Longitude of the west edge of the region 60 deg E Longitude of the east edge of the region 150 deg E Pixel size (by arc second, must be square) 3600 ／ 112 sec Number of pixels (east-west) Number of pixels (north-south) Land cover code 1 - ?? GLC2000 land cover code system 207 Pasture and cropland (Japan) 208 Corn and bean (China) 209 Rice and corn (China) 8. Description about optional data if any None

Description of ground truth (GT) sites Site code:4 Lat/long:N43d18', E141d45' Land cover code:1 Land cover:Paddy (70%) and soybean (30%) Information source: Land use map 1:200,000, 1982 (By Geographical Survey Institute, Japan) + Knowledge (Tateishi and Hongo) Site code:17 Lat/long:N43d39'37", E127d22'55" Land cover code:209 Land cover:Rice and corn Information source: Field survey, Jul-Aug 2001 (Zhu) (FS -Point No. 20) Site code:34 Lat/long:Northwest direction from N53d53', E109d57.7' Land cover code:203 Land cover:Bare area (Mountain top), Barguzin Mountain Information source: Field survey, Aug (Tateishi) (FS-Point No. 24) + Topographic Map, USSR, 1:200,000 (Survey 1982~1984, published 1997)

Potential input to GLCGT database (a) from existing validation material/data of other projects (b) from new independent materials (c) from training data of regional mapping in GLC2000 project

Conclusion Proposal: collection of ground truth data based on “GLCGT database” concept