[Esip-discovery] OpenSearch + geospatial + temporal extensions implemented by ESA Group on Earth Observations Geohazards Supersite

[Hua, Hook (388C)]

ESA's Group on Earth Observations (GEO) Geohazards Supersites has a
Virtual Archive 4 Supersite [1] that implements the OpenSearch
specification along with the geospatial and temporal extensions [2]. They
are providing discovery for ESA's SAR archive for ERS-{1,2} and ENVISAT
data. Looking at a sample response query, they also provide browse images
[3].

It does raise the question about if the baseline OpenSearch specification
with geospatial & temporal extensions is sufficient for the majority of
the cases.

--Hook

[1] http://eo-virtual-archive4.esa.int/
[2] http://eo-virtual-archive4.esa.int/help.html
[3] 
feed://eo-virtual-archive4.esa.int/search/ER02_SAR_RAW_0P/atom/?q=californi
a&start=2007-12-01&stop=2007-12-31T23:59:59