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Click
on any letter within image to jump to explanation
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Click
the link for any GCMD web site categories.
Web site categories include Home, Data
Sets, Data Services, Collaborations,
Add to GCMD, Participate, Calendar,
and Links. |
Home |
Global
Change Master Directory (GCMD) Home page |
Data
Sets |
GCMD's 14 data
set topics provide summaries of the data
sets and specific information such as
data over time and location, a citation
for the creator of the database and direct
links to data and services. |
| Data
Services |
GCMD's 9 data
services keyword topics provide summaries
of the data services of the data set services
such as model output data and earth science
related software programs. |
| Portals
|
Provides a listing of subset views ("portals")
of the directory through a customized
interface for GCMD partners/collaborative
organizations. |
Add to GCMD |
Allows user to
create and modify data set or data service
record descriptions within directory. |
Participate |
Offers link for RSS feed for new datasets, a form to
provide feedback, keywords, and an opportunity to join an
on-line forum. |
CEOS IDN |
Provides a link to the Committee on Earth Observation Satellites (CEOS) International Directory Network Web site. |
About GCMD |
Learn more about Global Change Master Directory. |
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Click
on any of the links for any GCMD related
web pages within the highlighted top
menu categories
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GCMD data
set keyword topics include: Agriculture,
Atmosphere, Biosphere, Biological Classification, Climate Indicators,
Human Dimensions, Hydrosphere, Land Surface,
Oceans, Paleoclimate, Snow and Ice, Solid
Earth, Spectral/Engineering and Sun-Earth
Interactions. |
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GCMD
data services Keyword topics include:
Data
Analysis and Visualization, Data Management/
Data Handling, Education / Outreach,
Environmental Advisories, Hazards Management,
Reference and Information Services,
Metadata Handling and Models, and Web Services.
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Provides
a graphical and functional link feature
for search terms entered
to Search the GCMD database.
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Keyword
Image:
Provides an icon that represents the keyword
topic category displayed on home page.
When the refinement option is chosen,
the last keyword topic entered will display
(note: all full text queries display an
icon of an Earth). |
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Keyword
Query Link "Breadcrumbs": Provides
links which match search steps. Each link
can be used to return back to any part
of previous query entered intially.
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Provides
option to narrow your search results.
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Topic Search
Refinement box:
Can
narrow the number of records returned
by filtering search
within specific categories. Refinement
options are defined as follows: |
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Projects:
Records
from a Scientific endeavour encompassing
data from a number of data sources.
Data Centers:
Records from organizations which distribute
data.
Locations: Records
that include names of places referenced.
Instruments/Sensors: Records
with Instrument or hardware used to
acquire the data.
Platforms/Sources: Records
with
the platform of data collection, as
in a spacecraft, ship or ground station
housing the sensor(s) used to acquire
the data.
Science Keywords (Parameters): Records
which
specify related science keywords that
are representative of the data set being
described.
Spatial Coverage: Records
with information related to a particular
geographic location (use map to identify
specific geographic coordinates).
Temporal
Coverage: Records
with information related to a particular
time range (identify specific dates).
Data Resolution:
Records
with detailed information related to
difference between two adjacent geographic,
vertical, or time values (Latitude,
Longitude, Horizontal, Vertical orTemporal
Resolution).
Children
Records Only: Records
with highly specific information and
have an association to a parent (generalized
aggregated ) record.
Parent Records Only: Records
that have an association between generalized
aggregated records.
Global Ocean: Records
that have the location keyword Global
Ocean.
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Full
text search refinement box: Can
narrow the number of records returned
within search results by specifying
any word within free text box. |
Specifies
the total number of records that match the
search entered.
Name
of the record description within GCMD.
Provides
links to online data systems for direct access
to data.
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Parent
DIFs:
describe
Earth science data sets. May or may not
have children (subsets).Child
DIFs:records
that describe related, but subset data
sets of a collection of data. |
Provides
a few lines from the record description summary.
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Links
