Shulou(Shulou.com)06/03 Report--

With the rapid development of earth observation technology around the world, the international community is also faced with the challenge of strengthening the coordination of international Earth observation activities and promoting data sharing. Relevant international organizations and international coordination plans continue to emerge, such as the Global Integrated observation Strategy (IGOS), the International Committee on Earth observation satellites (CEOS,Committee on Earth Observation Satellites), and the Earth observation Organization (Group on Earth Observations,GEO). As an intergovernmental international organization in the field of earth observation, the purpose of GEO is to promote the establishment of a global integrated earth observation system (GEOSS), which combines collaborative observation, data services and applications in social benefit fields, and serves government decision-making and practical applications in the field with data sharing as the core, thus forming an integrated information system.

The main data services provided by the GEO Global Earth observation system (GEOSS) website www.earthobservations.org are:

1. Surface solar radiation data in recent 21 years

Medium Resolution Optical Image of 2.CEOS Land Surface

3. Global land cover geoscience data

4.EROS data service

5.Landsat imaging products and services

6. American Seamless data Warehouse (Seamless Data Warehouse)

6.1 NED data (national elevation dataset)

The National elevation data set (NED) is mainly derived from the high-resolution digital elevation model from 10 meters to 30 meters, the best quality digital elevation data, covering the United States, Puerto Rico and the Virgin Islands. This is a seamless product update best digital elevation model (DEM), digital mapping information is representative. The spatial resolution of national elevation data is divided into three data sets: 1 arc second (about 30 meters), 1 / 3 arc second (about 10 meters), and 1 / 9 arc seconds (about 3 meters). NED data mainly covers the United States, Puerto Rico, Alaska and Hawaii.

7. Global ASTER G-DEM data

8. Earth system atlas

9. European Global Resource Information Database (DEWA/GRID-Europe)

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