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International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume XXXIX-B4, 2012
XXII ISPRS Congress, 25 August — 01 September 2012, Melbourne, Australia
DEVELOPMENT OF A NEW GEOSPATIAL DATA SHARING/OVERLAY SYSTEM
FOR LAND ENVIRONMENTAL STUDIES - CERES GAIA -
R. Tateishi®, J.T. Sri Sumantyo*, A. Miyazaki^, H. Sumitani ^
" CEReS, Chiba Univeristy, 263-8522 Chiba, Japan — tateishi@faculty.chiba-u jp
Multisoup, Co.,Ltd. 151-0072 Tokyo, Japan
Commission IV, WG IV/4
KEY WORDS: Data sharing, Web-based, Database, Geospatial data, Open system, Land applications
ABSTRACT:
A new geospatial data sharing/overlay system, CEReS Gaia, has developed. The purpose of the system development is to promote
land surface environmental studies. The system has developed to meet the requirements by academic users who wish easy data
analysis by using his/her own data with existing other data. The system has the following features; a) internationally unlimited
expansion of servers, b) multi-language capability (currently, only English), c) free access without user registration, d) data
upload/download by registered users, e) capability to overlay user's data on other registered data, f) option of open or selective data
distribution.
1. INTRODUCTION 2. CONCEPT OF GEOSPATIAL DATA SHARING /
OVERLAY SYSTEM, CERES GAIA
Since environmental problems were widely recognized as a
critical issue for human beings in 1980s, environmental studies The basic concept of a new geospatial data sharing/overlay
were promoted rapidly. Then many earth observation satellites system, CEReS Gaia (Figure 1), is as follows.
have been launched for environmental monitoring and many
environmental datasets have been produced. a) cluster system
Global Change Master Directory (GCMD) [website 1] by b) open source
NASA, which is currently the largest metadata inventories for c) international expansion of servers
global change and Earth science research, was initially d) multi-language capability
developed in around 1990. The International Society for e) free access without user registration
Photogrammettry and Remote Sensing (ISPRS) established f) data upload/download by registered users
working group on global environmental databases and g) types of acceptable geospatial data: satellite data, thematic
investigated situations and problems of database productions in data, digitized map data, ground measured data, ground
various fields such as land cover, elevation, hydrology, climate, photos, georegistered documents
soil, biodiversity, etc (Tateishi and Hastings, 2000 & 2002). h) search function by keywords or location
One of the recommendations of the working group was the
development of integrated global environmental databases
which is also mentioned by (Giri, et al. 2009). Recently, Group
on Earth Observations (GEO) started GEO portal which collects
various environmental data for nine societal benefits [website 2].
On the other hand, several universities of the U.S. developed
portal sites not only for environmental data but for general
geospatial data after around 2000. A representative one is
Harvard Geospatial Library which offers user-friendly interface
[website 3].
Most of the existing portal sites for data sharing/publication
aims to disseminate final dataset products to all people.
However, in the course of research and education of land
environmental science, we often need to share the intermediate
datasets in the process of the dataset production only within a
limited group such as a laboratory, a working group, an institute
or a class. Also, for the environmental analysis, we often need
to overlay his/her own data with existing data. Therefore user-
friendly overlay function is necessary for the data analysis. To P (s -
meet these requirements, the authors developed a new Satellite Ground
geospatial data sharing/overlay system, CEReS Gaia. derived data photo
Cluster system
: TERRY
,
Analysed
result
Figure 1 A new geospatial data sharing system, CEReS Gaia
19]
