Permission is granted to copy, distribute, and/or modify this document
under the terms of the GNU Free Documentation License, Version 1.1 or
any later version published by the Free Software Foundation; with the
Invariant Sections being ``Foreword,'' ``Preface,'' and ``Contributor
List,'' with no Front-Cover Texts, and with no Back-Cover Texts. A
copy of the license is included in the appendix entitled ``GNU Free
Documentation License.''
The GNU Free Documentation License is available from www.gnu.org
or by writing to the Free Software Foundation, Inc., 59 Temple Place,
Suite 330, Boston, MA 02111-1307, USA.
The original form of this chapter is LATEX source code. Compiling this
LATEX source has the effect of generating a device-independent
representation of a textbook, which can be converted to other formats
and printed.
The LATEX source for this chapter is available from
http://ppbio.inpa.gov.br/Members/IanL
Abstract:
The EOS ClearingHOuse (ECHO) functions as a spatial and temporal metadata clearinghouse for Earth Science Data and Information System (ESDIS) data and services applied to that data. It provides a single portal on the Internet where such metadata can be searched.
NASA's Earth Science Data and Information System (ESDIS) is building ECHO based on Extensible Markup Language (XML) and Web Service technologies. ECHO interfaces with different clients and users through its series of Application Program Interfaces (APIs).
We will implement a proof-of-concept software client which will query the clearinghouse to extract from it data relevant to the Amazonia region.
This work is possible because ECHO is an open system with a published API available. It is released under the NASA OPEN SOURCE AGREEMENT.[1]
vern
2006-10-25
