NASA Response to Geospatial Architecture Implementation Pilot Call for Participation (CFP)

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i









NASA Response to
Geospatial
Architecture
Implementation Pilot

Call for Participation (CFP)






May 11, 2007






ii

Overview


NASA
’s Earth Science,
interdisciplinary research and applications require access to earth
observations, analytical models a
nd specialized tools and services, from diverse distributed sources.
A standards
-
based SOA architecture for geospatial and sensor data access, discovery and processing
greatly facilitates such access among the information and processing compo
nents related

to space
-
craft, airborne, and
in situ

sensors; predictive models; and decision support tools. Towards that goal,
NASA has been actively participating in GEOSS activities that aim at establishing, evolving and
testing the System of Systems architectural ap
proach. Recent
involvement

include
s

participation in
the 2006 GEOSS workshop series, participation in the AR
-
07
-
02 task, participation in the GEO
-
III
plenary and submitting agency responses to the GEOSS Portals and Clearinghouses RFIs.

This document propo
ses
four

main NASA contributions to the GEOSS Geospatial Architecture
Implementation Pilot:

-

Wildfire scenario:
A sensor web wildfire demonstration scenario and supporting components
involving NASA satellites, unmanned aerial systems and ground sensors to a
utonomously gather
observations and deliver user
-
customized geospatial data products in a collaborative, open source
environment. The scenario supports tactical planning, analysis and operations of the National
Interagency Fire Center to combat fires of na
tional importance, especially those near inhabited
areas or critical infrastructure assets. The underlying open source sensor web services can be re
-
used to support other societal benefit areas with other sensors and data sources with minimal
modifications
.

-

Standards
-
based earth science community catalog and portal:
The NASA Earth Science
Gateway (ESG) streamlines access to remote geospatial data, imagery, models, and visualizations
through open, standard OGC and ISO protocols. By organizing detailed metad
ata about online
resources into a flexible, searchable registry, it lets scientists, decision
-
makers, and others access
a wide variety of observations and predictions of natural and human phenomena related to Earth
Science, from NASA and other sources. ESG

provides an OGC
-
based catalog and a community
portal that can be leveraged by other GEOSS Clearinghouse components and portals.

-

Global Change Master Directory (GCMD):
GCMD enables users to locate and access data sets
and services related to Earth Science

and Earth System observations.


The directory offers

searches for data through full
-
text queries, taxonomies of Science and Services

keywords; and
ancillary information, such as platforms, instruments, projects,

locations, and data centers
-

all of
which
can be used in refinements of the search.


The

GCMD contributes to GEOSS through its
coordination with the Committee on Earth Observation Satellites (CEOS), intergovernmental
agencies, and regional organizations that provide ideas

for the10
-
year GEOSS Impl
ementation
Plan.


-

Socioeconomic Data and Applications Center (SEDAC) data and services:
Providing access
to a variety of socioeconomic
data via OGC web services, including US Census Grids, Gridded
Population of the World and the Global Rural Urban Mapping
Project. SEDAC is also offering a
WMS client that can be used for the pilot along with customized context documents in support of
the demo scenario(s).


By leveraging modular and standard
-
based components such as the ones above, NASA hopes to
contribute t
o achieving the GEOSS vision of providing access to an unprecedented amount of
information, integrated into relevant products benefiting societies and economies worldwide.



iii


NASA Response to
Geospatial
Architecture Implementation Pilot

Call for Participa
tion (CFP)


TABLE OF CONTENTS

1

WILDFIRE SCENARIO, C
OMPONENTS AND DEMONS
TRATION

........................

1

1.1

O
VERVIEW

................................
................................
................................
.......................

1

1.2

D
ESCRIPTION OF
S
CENARIO

................................
................................
.............................

1

1.3

T
EAM

................................
................................
................................
...............................

2

1.4

P
LANS FOR
P
ARTICIPATION IN
P
ILOT
A
CTIVITIES

................................
.............................

3

1.5

C
OMPONENTS

................................
................................
................................
..................

6


2

EARTH SCIENCE GATEWA
Y (ESG)

................................
................................
..............

7

2.1

O
VERVIEW

................................
................................
................................
.......................

7

2.2

ESG

C
ATALOG

................................
................................
................................
................

8

2.3

ESG

P
ORTAL

................................
................................
................................
...................

9

2.4

P
LANS FOR
P
ARTICIPATION IN
P
ILOT
A
CTIVITIES

................................
...........................

12


3

GLOBAL CHANGE MASTER

DIRECTORY (GCMD)

................................
...............

13

3.1

O
VERV
IEW

................................
................................
................................
.....................

13

3.2

P
LANS FOR
P
ARTICIPATION IN
P
ILOT
A
CTIVITIES

................................
...........................

13


4

SOCIOECONOMIC DATA A
ND APPLICATIONS CENT
ER (SEDAC)

...................

14

4.1

O
VERVIEW

................................
................................
................................
.....................

14

4.2

P
LANS FOR
P
ARTICIPATION IN
P
ILOT
A
CTIVITIES

................................
...........................

14


5

DESCRIPTION OF RESPO
NDING ORGANIZATION

................................
...............

15




NASA Response to GEOSS Geospatial Architecture Implementation Pilot CFP

1

1

WildFire Scenario, Components and Demonstration

1.1

Overview

The section proposes to enhance the CFP wil
dfire scenario by contributing a
demonstration that will be conducted during July
-
August 2007 linking NASA satellites,
unmanned aerial systems, and ground sensors in a sensor web that autonomously gathers
observations and delivers user customized geospatia
l data products in a collaborative,
open source system. The demonstration is set to occur in the United States (U.S.), but
visibility to activities and access to systems and data will be provided to Pilot participants
as necessary for others to conduct in
teroperability studies on the sensor web services that
form the basis of our demonstration. Sensor web functions exist as web services that
provide access to capabilities, data, and processes and translate them into a collaborative
geospatial environment
based on Open Geospatial Consortium OGC standards for Sensor
Web Enablement (SWE).

1.2

Description of Scenario

This section proposes to contribute to and enhance the wildfire scenario described in the
CFP. A team of researchers, mostly funded by NASA science
technology and
applications grants, are implementing a collaborative geospatial decision environment to
support fire management in the Western U.S. during the summer of 2007. This Western
States Fire demonstration is being offered as an example of a Syste
m of Systems
approach in the disaster management/emergency response societal benefit area. The team
is also preparing an additional proposal that could be performed in Fall 2007 and Winter
2008 season in the Southern hemisphere if NASA and other U.S. agen
cy support can be
garnered. This additional proposal would seek additional marginal add
-
on funding for
linking in actual Southern hemisphere sensor assets with the existing collaborative web
service environment to demonstrate local accessibility of NASA t
askable assets and data
product sources under a sensor web service regime in a truly global setting.


In the proposed scenario (Figure 1.1), a user is responsible for tactical planning, analysis,
and operations to combat fires of national importance, espec
ially near inhabited areas or
critical infrastructure assets. The user searches for and finds specific types of fire data
available from multiple sensor assets, such as satellites, unmanned aerial systems, and in
-
situ instruments, and creates user specifi
ed data products that are automatically generated
and delivered via a local web map client. At present, the user needs to have some a
-
priori
knowledge of the types, locations and operating modes of instruments and their platforms
to be able to locate, retr
ieve and use their data. This is especially true when the desired
data is to be obtained from variable locations sometime in the future instead of from the
data archives or via continuous sensor readouts from fixed locations. The user would
prefer to sub
scribe

to
their area of interest (
AOI
) for sensor web coverage, receive

daily
alerts

for fire data available in their area, request specific taskings for future data collects,
and be provided the latest

imagery
, derived data products, and in
-
situ sensor re
adings for

fires in

their

AOI

automatically, even for observations that will occur over the next few
days.

NASA Response to GEOSS Geospatial Architecture Implementation Pilot CFP

2


Figure 1.1 Wildfire Sensor Web Scenario


In our scenario, the user does

not

necessarily have to

know
what assets are available to
support sensor re
adouts in each region in their domain. They are more
focused on
the
task
at hand (fire management/firefighter di
spatch, etc.
)
. The sensor web will identify large
fires in the user AOI, locate the current locations of those fires, task various observing
as
sets to target those fire locations in an optimized fashion, execute detection algorithms
that process user
-
specific classification products, post alerts based on those observations,
and deliver all products to a web map client for overlaying with other in
frastructure and
geographical information about the AOI. Additional pertinent information from a web
-
based smoke prediction service will also be incorporated.

1.3

Team

The NASA team is involved in wildfire management from basic research to applications
develo
pment. The team leads have written numerous articles in recognized research
journals on utilizing remote sensing capabilities in sensor webs and extending the
applications research across Earth observation as well as planetary geology and other
phenomena
in the realm of space exploration.


NASA Response to GEOSS Geospatial Architecture Implementation Pilot CFP

3

The team consists of NASA engineers and scientists from the Goddard Space Flight
Center (GSFC), Ames Research Center (ARC), and Jet Propulsion Laboratory (JPL) who
are contributing specific knowledge of spacecraft, UAS
, remote sensing instruments, and
communications technologies. In addition, researchers from the University of Maryland,
California State University at Monterey Bay, George Mason University, and others are
contributing detection algorithms and fire
-
specifi
c domain knowledge. Industry and open
source developers are contributing web services for determining feasibilities, tasking
sensors, processing data, subsetting, event detection, alert broadcasting, and geolocation
rendering.


The team is led by Dan Mand
l Code 584, NASA Goddard Space Flight Center, Greenbelt
MD 20771.


1.4

Plans for Participation in Pilot Activities

The NASA team will participate in Pilot coordination meetings, teleconferences, and
Email distributions. If the
CFP architecture team

implemen
ts a wiki page for
coordination, the NASA team will monitor those activities and post contributions as
necessary.

The team will participate in sensor web architecture definition (Figure 1.2) and
refinement activities as part of the scenario planning exerci
se.


For the Western States demonstration that will occur during the summer of 2007,
unmanned aerial systems (UAS) will fly instrument packages once per week for a period
of 22 hours each. Each flight will occur in one of three possible flight corridors
that will
be the geographic region of interest.


The start of

the user scenario is for users to subscribe to daily alerts from the National
Interagency Fire Center (NIFC) called the ICS209 report. Pilot participation can occur at
several points during e
ach weekly sequence of activities. The activities are centered
around the particular flight of a single UAS during a particular week, but unfettered
access to all satellite, UAS, and sensor web activities that occur every day in the
planning, execution, a
nd data delivery functions will be provided to Pilot observers, once
authorized.


NASA Response to GEOSS Geospatial Architecture Implementation Pilot CFP

4


Figure 1.2 Sensor Web Architecture


The next step in our scenario is for the sensor web system to query the Advanced
Spaceborne Thermal Emissions Radiometer (ASTER) thermal

readout site at the U.S.
Geological Survey for updated fire locations and intensity readings at 30m resolution for
fires within the AOI. The browse image is retrieved for any data posted in the last 24
hours. The browse data is processed for display on
a web map of the region.


The user is
alerted that imagery is available. ASTER Level 1G data is then retrieved and a web
processing service will provide selected bands from ASTER as input to a thermal
detection algorithm. Hot pixel locations are delivere
d as a thermal summary product that
is overlaid on a web map client. An alert is posted for the updated fire locations to link in
future observation coverage.


The sensor web system queries the MODerate
-
resolution Imaging Spectro
-
radiometer
(MODIS)
Land R
apid Response system

and gets updated fire locations at
1000
m
resolution for other fires in the AOI not covered by ASTER.
If some of the images are
inconclusive or cloudy, t
he sensor web system
may request

imagery from the sensor web
wildfire model for f
ire coverage in the area to acquire additional observations as needed
to clarify the status.

Data used in this demonstration will utilize a direct broadcast
receiving station at the USDA Forest Service’s Remote Sensing Applications Center
NASA Response to GEOSS Geospatial Architecture Implementation Pilot CFP

5

(USFS
-
RSAC) which

provides data products with a latency of less than 20 minutes from
the end of an overpass by one of the MODIS instruments.

-

The model queries the catalog registry to discover potential assets such as
NASA’s unmanned aerial system (UAS) for fires and the E
arth Observing
-
One
(EO
-
1) satellite.

-

The model calls an optimizer/scheduler to determine feasibilities of both assets
for the fires of interest and to make target selections.

-

If a particular fire can be imaged by the UAS, but another one cannot because it
i
s
out of authorized flight path, then the s
ensor web tasks the UAS to image the
particular one in its flight path by computing new target way points and issuing
data acquisition commands to the instrument

o

System retrieves UAS imagery and processes it for
overlaying on a web
map client

o

User is
then
alerted that imagery is available and alerts are posted for
detections within the UAS data.

-

System tasks EO
-
1 for one or more of the remaining fires in the AOI

o

Fire classifier runs onboard EO
-
1 to produce a therm
al summary product

o

Sensor web will allow user to select coverage type to either maximize
spatial coverage of AOI fires by available assets, or concentrate available
assets on a particular fire for repeat coverage. For the repeat coverage
scenario, sensor
web will select the image within view of the EO
-
1
overflight which most closely coincides with the flight window for the
UAS. For the maximum spatial coverage scenario, the system will cover
the most targets in the shortest time between the UAS and EO
-
1.



The user is allowed to select to screen out data for which no hot
pixels are detected onboard EO
-
1 so no image is downloaded or
processed on ground.



If hot pixels are detected, the image is downloaded and processed.
User is alerted that imagery is availa
ble. An alert is posted that a
positive detection has occurred. Thermal summary is
automatically delivered for overlaying on a web map client.



On
-
going tasking of EO
-
1 and UAS over a 24
-
48 hours period is
automatically controlled using workflows that seq
uence the
activities of several sensor web processing nodes to accept new
taskings and data requests, process the user
-
driven alerts, thermal
summary, and other customized data products, and deliver them
back to the user client.

-

User queries Remote Access
Weather Station (RAWS) data in vicinity of selected
fires. Selected data is displayed on same map as satellite imagery.


Based on
wind reading from RAWS, more ground assets are dispatched to particular events
that could threaten nearby infrastructure (che
mical plant, power lines, telecom,
houses/buildings etc.).

-

User can request updated run of smoke prediction model based on the updated
observation data made available by the sensor web. Smoke model can also trigger
NASA Response to GEOSS Geospatial Architecture Implementation Pilot CFP

6

subsequent observations through the sen
sor web based on model sensitivity
reduction techniques.

Secure authentication is only enforced after data is found and accessed (i.e. not required
for plotting the data).

1.5

Components

All sensor web components are implemented as web services according to th
e Open
Geospatial Consortium web service standards for Sensor Web Enablement (SWE).

-

ASTER
is a thermal infrared multispectral radiometer on
-
board the Terra satellite.

-

EO
-
1 has two instruments


the Advanced Land Imager (ALI


a 12
-
band
multispectral) and H
yperion (a 242 band hyperspectral instrument).

-

MODIS from both the Terra and Aqua satellites will be used to determine hot pixel
locations.

-

A 12
-
band multispectral instrument will fly on
-
board the UAS.

-

RAWS components provide wind speed and direction, temp
erature, humidity and
other pertinent weather parameters from the local area near the fires.

-

OGC
-
compliant web service nodes for observation data, planning, tasking, data
retrieval, alert notification, mapping, data processing, coordinate transformation,
s
ubsetting, and catalogging.

1.5.1

Performance Capability

All web services are available on the internet and
are implemented as asynchronous
capabilities each serving a particular function. Typical web traffic rates should be
maintained throughout the demonstrat
ion. One of the challenges encountered in the U.S.
is the inability to

conduct chat in an interactive session (such as Jabber) across multiple
organizations due to firewall and security restrictions preventing install
a
tion of such tools
on local ca
m
puses.

The impact of these restrictions will be minimized by the use of
private accounts on internet service providers maintained by Pilot participants.


1.5.2

Availability of Components

All web services shall remain active for the Western U.S. until the end of the t
echnology
development grants, which should be through September 2009. The EO
-
1, Terra, and
Aqua spacecraft are undergoing Senior Review at NASA to determine funding level for
FY08 and FY09. All have submitted proposals to NASA to continue operations and
expect to receive continuance at some level for the two year period. So, while the period
beyond September 2007 is still being considered, the pilot time period should be
supported by all three spacecraft
s
. The UAS plans are contingent upon receiving a
C
ertificate of Authorization from the Federal Aviation Administration to fly in open
civilian air space, which is on track for being granted in July. The UAS did fly in open
air space recently (
October 26


November 1, 2006
) under a waiver
granted by the F
AA
at the request of
the Governor of California to fly in Southern California, but a standard
FAA COA is new for these types of vehicles.

NASA Response to GEOSS Geospatial Architecture Implementation Pilot CFP

7

2

Earth Science Gateway (ESG)

2.1

Overview

The
NASA
Geosciences Interoperability Office

(GIO)
has been a strong supporter of

the
System of Systems approach of the GEOSS architecture as based on interoperability
arrangements and voluntary consensus
-
based standards. Indeed, the NASA Earth Science
Gateway (ESG; http://esg.gsfc.nasa.gov) was designed and prototyped based on the sam
e
service
-
oriented distributed architectural principles of GEOSS.
The

NASA GIO

has
developed ESG
by adapting and deploying a sta
ndards
-
based commercial product.

ESG
is designed to pull together the resources of the NASA Earth Science community (such as
the

GCMD catalog as well as various Web Map and Web Coverage services provided by
various NASA DAACs) so that those can easily plug into the larger GEOSS context.
Furthermore, ESG has been a key component in the GEOSS Web Services workshops
and demos over the

last year. ESG has also been used as a catalog and a portal at the
GEO
-
III Plenary Clearinghouse demo in Bonn, Germany.


As a strong proponent of interoperability and standardization, NASA GIO is looking at
the Geospatial Architecture Implementation pil
ot as an opportunity to further test and
enhance the interoperability of the NASA ESG and to leverage the resources of the
NASA Earth Science community (Figure 2.1).



Figure 2.1: ESG as an interoperable platform for geoscience web services.


NASA Response to GEOSS Geospatial Architecture Implementation Pilot CFP

8

Thanks to e
xtensive use of open standards, ESG can tap into a wide array of online data
services, serve a variety of audiences and purposes, and adapt to
technology and business
changes. ESG provides local and di
s
tributed search and harvest; visualization of remote
d
ata via Web services; publishing of data and services, and user pe
r
sonalization; all
linked and enabled by a flexible relational dat
a
base.
Most importantly, the use of open
standards allow
s

ESG to function as a platform within a larger context of distribut
ed
geoscience processing, such as
GEOSS
.


Furthermore, b
y putting a broad set of open standards into practice, ESG
serves as an
example
illustrating what can be done with interoperable components
, hence serving

as a
reference implementation for developers
of servers and clients to test against.

ESG
also
facilitates the discovery of new information f
rom many different sources, therefore

foster
ing
interdisciplinary, exploratory, and collaborative work,
as

precursor
s

to
innovative research, applications, and d
ecisions.

2.2

ESG Catalog

At the heart of the NASA ESG is an OGC Catalog Service for the Web (CS
-
W) catalog
for various earth science community resources. ESG’s catalog is based on the ebRIM
profile as developed and tested during OGC’s web services testbeds,

hence ensuring
interoperability of queries amongst ESG and other catalogs as necessary for a sustainable
and extensible GEOSS clearinghouse. ESG’s CSW interoperability was recently tested
by the European Space Agency (ESA) through a successful connection
to the ESG
catalog via the ESA SSE Portal (
http://services.eoportal.org/
).


The following catalog features are currently supported by ESG:


-

Registering

a variety of resources such as OGC services (WMS, WFS, W
CS,
context documents) as well as other earth science community resources
(documents, web services, etc).

-

Automatically harvesting

metadata from OGC services capabilities documents
by mapping a service’s GetCapabilities response to the latest OGC ebRIM pro
file.

-

Describing

resources using both the FGDC as well as the ISO 19115 metadata
standards.

-

Harvesting

(at a frequency that can be set by the resource publisher or the
administrator) Z39.50
-
enabled clearinghouse nodes such as the Global Change
Master Dire
ctory (GCMD), the US National Spatial Data Infrastructure (NSDI)
and the Global Spatial Data Infrastructure (GSDI). This facilitates discovery of
resources from independent sources across the distributed infrastructure (Figure
2.2).


NASA Response to GEOSS Geospatial Architecture Implementation Pilot CFP

9

GetCapabilit ies
NSDI
NSDI
NSDI
Z39.50
Regist ry
Harvest
FGDC
Metadata
Publish
User
input
Met adata
URLs

Figure
2.2: Mechani
sms for publishing resources in ESG


-

Accepting queries

(both publish and search) from external software components
or services via the OGC CSW interface.
As such, ESG is able to serve a
s a catalog
for a

diverse and growing set of geoscience catalog clients

(Figure 2.3).


-

Supporting different classification schemes
: Because it is based on the ebRIM
profile, the ESG catalog can support a variety of classification schemes (such as
the ISO 19119 topic categories, the NASA national applications, or other user
-
de
fined categories). The classification schemes provide the basis for the
categories used in the search and publish queries and interfaces.


Registry
User
input
External
queries
Show metadata record
Show view
Search NSDI node
Viewer
NSDI
NSDI
NSDI
Search


Figure
2.3: ESG search options.

2.3

ESG Portal

The ESG Web portal is based on the Web Enterprise Suite (WES), built
by Compusult,
Ltd. of Canada (
http://www.compusult.net/cslt_prod_dm_wesport.html
). The portal user
interface is all web
-
based and is built with Java portlets conforming to the JSR 168 Java
st
andard for portlets, using the open
-
source LifeRay product

(
http://www.liferay.com/web/guest/home
).


The ESG web portal consists of the following portlets:

-

Discovery portlet

(Figure 2.4) allowing users

to search for g
eoscience data and
services based on resource types (Web services; documents; applica
tions; models;
datasets, etc.); topic categories (e.g., agricul
ture, ecology, oceanography); user
-
specified keywords; time and date; or geog
raphic locat
ion (specified as a place
NASA Response to GEOSS Geospatial Architecture Implementation Pilot CFP

10

name, or as a place on a map). ESG allows searches not only against its own list
of resources, but the
NSDI & GSDI

Clearinghouse
s
, which ESG harvests
periodically to facilitate discovery of resources from independent sources acros
s
many different sectors of activity. Equipping ESG with this periodical harvesting
capability enables it to easily support value
-
added services on top of returned
search results in the future.



Figure 2.4 ESG Discovery User In
terface

-

Publishing
portlet

allowing users to advertise
resources ranging from online
Web services to documents, online and offline data, etc. For each resource, the
publishing process assembles one or more complete metadata records from the
online service
description; from a metadata record referred to by a Uniform
Resource Locator (URL); or from user input via a Web
-
based “wizard.”
Only
approved registered users can publish to ESG.

o

Publishers can register a variety of resources such as OGC services
(WMS, W
FS, WCS, context documents) as well as other earth science
community resources (documents, web services, etc). Resources are
classified according to their resource type.

o

Publishers can select to describe their resources using either the FGDC or
the ISO 19
115 metadata standards.

o

Publishers can register a Z39.50 catalog or a clearinghouse that can be
then harvested at a frequency set by the resource publisher or the system
administrator. Current registered clearinghouses include the NSDI, GSDI
and GCMD.

NASA Response to GEOSS Geospatial Architecture Implementation Pilot CFP

11

o

Pub
lishers

can
classify their resources according to a variety of
classification schemes, including the ISO 19119 topic categories, the
NASA national applications, or science research areas. Additional
classification schemes (e.g. GEOSS societal benefit areas
) can be easily
accommodated.

-

Viewer
portlet

(Figure 2.5)
providing controls to zoom and pan; manipulate
layers; identify data values behind the view; transform the view to a variety of
coordinate reference systems; and others. The viewer exercises the OG
C Web
Map Service (WMS) to retrieve visual “layers” from remote servers and to
display them in a single view. The ESG portal integrates not only static “base
map” data, but also real
-
time and recorded imagery and sensor observations,
analytical model resul
ts, forecasts, etc., in a common geospatial visualization
environment.



Figure 2.5 ESG Viewer User Interface

-

Collaboration portlet

providing users with an environment to collaborate and
share maps, documents (including context
documents) and scientific research
results. It includes a collaboration forum, a calendar of events, an image/map
library and a document library.

To more fully explore ESG’s potential as a platform for interoperable services, the NASA
GIO continues to wor
k on extending ESG to support advanced functions of interest to the
NASA Earth Science activities as they relate to societal benefits and national applications
areas. Such functions are directly relevant to a GEOSS Web Portal including:

NASA Response to GEOSS Geospatial Architecture Implementation Pilot CFP

12


-

Support for scient
ific data retrieval and rich visualization

o

Recent work experimented with equipping ESG with a client for OGC’s
Web Coverage Services (WCS).

o

Recent work also involved adding the capability of linking search results
directly to third
-
party 3D viewers and ana
lysis tools such as NASA’s
WorldWind, Google Earth and the Space Time Toolkit.

-

Ease of customization

o

Because the ESG Web portal is based on the latest portlet technologies
and the open source LifeRay product, it can easily be extended and
customized to mee
t specific communities’ needs. Currently, the NASA
GIO is working with the ESIP federation Air Quality cluster to define an
air quality portlet and collaboration forum accessible within ESG.

-


Support for RSS feeds

o

The ESG Web Portal allows users to subscri
be to RSS feeds, hence
enabling them to check the latest content as relevant to their community or
societal benefit area directly from within the portal.


2.4

Plans for Participation in Pilot Activities

Pilot activities are encouraged to use the ESG CSW cata
log back
-
end and community
portal user interface in support of any scenario developed by the pilot architecture team.
The ESG team will register the ESG catalog and portal (as well as any other supporting
NASA services) in the GEOSS clearinghouse. The team

will also support a connection to
the GEOSS clearinghouse, and will leverage that connection in the ESG portal.


NASA GIO representatives will participate in pilot coordination meetings,
teleconferences and email distributions and will support the pilot
architecture refinement
activities.


The NASA ESG catalog and portal are managed by Myra Bambacus, Code 610
Geosciences Interoperability Office, NASA Goddard Space Flight Center, Greenbelt MD.


2.4.1

Availability of Components

ESG is a working prototype Earth S
cience community portal that is hosted and
maintained on behalf of NASA by George Mason University. The ESG team (NASA
GIO, GMU and Compusult) will support connections to and from the ESG catalog within
the pilot activities, and will ensure access to the p
ortal to the extent possible.


NASA Response to GEOSS Geospatial Architecture Implementation Pilot CFP

13

3

Global Change Master Directory (GCMD)

3.1

Overview

The Global Change Master Directory (GCMD) enables users to locate and access data
sets

and services related to Earth Science and Earth System observations.


The directory
offer
s

searches for data through full
-
text queries, through taxonomies of Science and
Services

keywords; and through ancillary information, such as platforms, instruments,
projects,

locations, and data centers
-

all of which can be used in refinements of the
se
arch.


The

GCMD contributes to GEOSS through its coordination with the Committee
on Earth Observation Satellites (CEOS), intergovernmental agencies, and regional
organizations that provide ideas

for the10
-
year GEOSS Implementation Plan.






As part of the

overall mission, the GCMD supports NASA and NASA partners in the
following activities

-

Supports NASA’s Earth Observing System Data and Information System
(EOSDIS) and the NASA Federation of Earth Science Information Partners
(ESIP)

-

Serves as one of NASA’s
contributions to the Committee on Earth Observation
Satellites (CEOS) by developing and sharing software for the International
Directory Network (IDN)

-

Collaborates with other partners and organizations (e.g. creates search “portals”
for associated groups w
ho wish to share their data set descriptions through the
GCMD and also wish to offer a focused view of their specific data)

-

Serves as NASA’s node for the Federal Geographic Data Committee’s (FGDC)
Clearinghouse, offering NASA’s data set descriptions as par
t of the National
Spatial Data Infrastructure (NSDI).

3.2

Plans for Participation in Pilot Activities

Pilot participants and components are encouraged to connect to GCMD as NASA’s NSDI
Clearinghouse node via the Z39.50 protocol. As such, GCMD can support any

scenario
identified by the pilot architecture team. The pilot may also leverage GCMD’s GEOSS
portals for
Earth Observation

data:




http://gcmd.nasa.gov/KeywordSearch/Home.do?Portal=geoss&MetadataType=0

and Earth Observation tools:



http://gcmd.nasa.gov/
KeywordSearch/Home.do?Portal=geoss_svcs&MetadataType=1.

These portals have been created to potentially help increase and facilitate the growth of
Earth Observation Systems.

3.2.1

Availability of Components

GCMD is an operational system and is supported by existi
ng NASA systems and
personnel. GCMD is managed by Lola Olsen, Code 610, NASA Goddard Space Flight
Center, Greenbelt MD.

NASA Response to GEOSS Geospatial Architecture Implementation Pilot CFP

14

4

Socioeconomic Data and Applications Center (SEDAC)

4.1

Overview

SEDAC, the Socioeconomic Data and Applications Center, is one of the Distri
buted
Active Archive Centers (DAACs) in the Earth Observing System Data and Information
System (EOSDIS) of the U.S. National Aeronautics and Space Administration. SEDAC
focuses on human interactions in the environment. Its mission is to develop and operate

applications that support the integration of socioeconomic and Earth science data and to
serve as an "Information Gateway" between the Earth and social sciences.



In support of data integration and in support of its Information Gateway mission, SEDAC
has

developed a number of OGC compliant services based on its global and U.S.
socioeconomic data. These services allow for visualization (WMS) and data access
(WFS, WCS). Support for accessing the visualization components of these services with
3D viewing sof
tware (Google Earth, World Wind) has also been developed. Work on
these services is ongoing and additional SEDAC data holdings are being configured for
service
-
based access on an ongoing basis.


Discovery of SEDAC data sets and services is provided through

the SEDAC Information
Gateway:
http://sedac.ciesin.columbia.edu/gateway/

and SEDAC data sets are listed in
the Global Change Master Directory.


4.2

Plans for Participation in Pilot Activities

The US
Census Grids project has converted detailed socioeconomic data for the U.S. to
raster format to facilitate visualization and analysis. The data are available at a resolution
of 30 arc
-
seconds (approximately 1 km) for the U.S., and 7.5 arc
-
seconds (approxim
ately
250 meters) for the 50 metropolitan areas with populations greater than 1 million. WMS
and WCS services based on these data for relevant variables will be made available for
the pilot. Counts of population (residential) and housing units are two vari
ables that are
of particular relevance for the wild fire scenario. A complete list and descriptions of
variables that could be made available as services are at:

http://sedac.ciesin.columbia.edu/usgr
id/


Data from the Gridded Population of the World (GPWv3) data set and the Global Rural
-
Urban Mapping Project (GRUMPv1 alpha) are currently available as OGC services.
These data sets will provide population and urban
-
rural extent information to the pilot

activities for areas outside of the U.S. at resolutions of 2.5 arc
-
minutes (4.5 kilometers)
and 30 arc
-
seconds. Additional information on GPWv3 and GRUMPv1 alpha is available
at:
http://sedac.ciesin.co
lumbia.edu/gpw/



NASA Response to GEOSS Geospatial Architecture Implementation Pilot CFP

15

SEDAC uses Ionic Software’s RedSpider Enterprise suite for delivery of OGC
-
compliant
services. A public beta client that supports WMS, WFS, and the Web Mapping Context
(WMC) specifications is available at:
http://beta.sedac.ciesin.columbia.edu/mapviewer/



The client will be available for the pilot, and custom contexts that bring together SEDAC
and data from other organizations in the pilot can be created and shared using t
he WMC
capability of the client.


The SEDAC components will be coordinated through Greg Yetman, CIESIN, Columbia
University.


5

Description of Responding Organization

NASA is an aeronautics and space science and technology organization responsible for
US ci
vilian research and education for space and Earth science activities.


Programmatic Contact for
NASA CFP response
:


Myra Bambacus

Code 610 Geosciences Interoperability Office

NASA Goddard Space Flight Center, Greenbelt MD

myra.j.bambacus@nasa.gov

(301) 286
-
3215


Technical Contact for
NASA
CFP response:


Nadine Alameh

Code 610 Geosciences Interoperability Office

NASA Goddard Space Flight Center, Greenbelt MD

na
dine.s.alameh@nasa.gov

(301) 286
-
4952